Circular 4/2023 — Modifications to Circular 3/2012 (Interbank Equilibrium Interest Rate for Terms Greater Than One Banking Business Day)

Thursday, April 13, 2023 OFFICIAL GAZETTE 1 BANK OF MEXICO CIRCULAR 4/2023 addressed to Credit Institutions, Regulated Multiple-Object Financial Societies that maintain equity links with Credit Institutions, and the National Financial Institution for Agricultural, Rural, Forestry and Fisheries Development, regarding Modifications to Circular 3/2012 (Interbank Equilibrium Interest Rate for terms greater than one banking business day).

A logo is placed at the margin, which says: Bank of Mexico.

CIRCULAR 4/2023 TO CREDIT INSTITUTIONS, REGULATED MULTIPLE-OBJECT FINANCIAL SOCIETIES THAT MAINTAIN EQUITY LINKS WITH CREDIT INSTITUTIONS AND THE NATIONAL FINANCIAL INSTITUTION FOR AGRICULTURAL, RURAL, FORESTRY AND FISHERIES DEVELOPMENT: SUBJECT: MODIFICATIONS TO CIRCULAR 3/2012 (INTERBANK EQUILIBRIUM INTEREST RATE FOR TERMS GREATER THAN ONE BANKING BUSINESS DAY)

The Bank of Mexico, with the purpose of continuing to promote the sound development of the financial system and considering the recommendations of the Swiss association that groups financial authorities from various countries, known as the Financial Stability Board (FSB, by its acronym in English), as well as of the grouping of banking supervisory authorities, known as the Basel Committee on Banking Supervision, and of the International Organization of Securities Commissions (IOSCO, by its acronym in English) regarding the characteristics that reference interest rates used in financial markets must meet, in particular, the periods during which financial institutions should cease to use reference rates not determined based on real transactions, has decided to determine the dates from which the use, as a reference for new operations, of the Interbank Equilibrium Interest Rate in national currency (TIIE) for terms greater than one banking business day will be restricted, as well as to modify the methodology for its calculation, so that it is carried out based on market facts.

For the above, based on articles 28, paragraphs sixth and seventh, of the Political Constitution of the United Mexican States, 24 and 26 of the Bank of Mexico Law, 48 of the Credit Institutions Law, 87-D, paragraph fourth, of the General Law of Organizations and Auxiliary Activities of Credit, 22 of the Law for Transparency and Ordering of Financial Services, 1, 4, first paragraph, 8, paragraphs fourth and eighth, 10, first paragraph, 12, first paragraph, in relation to 19 Bis 1, fraction XI, and 17, fraction I, of the Internal Regulations of the Bank of Mexico, which grant it the authority to issue provisions through the General Directorate of Central Bank Operations and the Directorate of Central Bank Provisions, respectively, as well as Second, fractions VI and X, of the Agreement on the Attachment of Administrative Units of the Bank of Mexico, has resolved to modify the Index, the definition of “TIIE for Terms Greater Than One Banking Business Day” contained in article 2°, articles 38, paragraph third, 115, fractions II and III, 116, fraction I, 150, 160 Bis, 192, paragraph third, 195 Bis 3, paragraphs first, fourth and sixth, as well as sub-paragraphs a) and b) of paragraph second, 195 Bis 4, paragraphs first and third, as well as fractions I and II, 195 Bis 5, paragraph first and fraction I, as well as Annexes 5, 5 Bis 1, 10, 11, 12 Bis, 12 Bis 1, 12 Bis 2, 12 Bis 3, 12 Bis 4 and 12 Bis 5, as well as repeal fraction I Bis of article 38, fraction IV of article 115, articles 146, 147, 148, 149, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, sub-paragraph b) of fraction VI of article 188, sub-paragraph b) of fraction II of article 195 Bis 5, as well as Annexes 12, 12 Bis 6 and 12 Bis 7, of the “Provisions applicable to the operations of credit institutions, regulated multiple-object financial societies that maintain equity links with credit institutions and the National Financial Institution for Agricultural, Rural, Forestry and Fisheries Development”, contained in Circular 3/2012, to remain in the following terms:

PROVISIONS APPLICABLE TO THE OPERATIONS OF CREDIT INSTITUTIONS, REGULATED MULTIPLE-OBJECT FINANCIAL SOCIETIES THAT MAINTAIN EQUITY LINKS WITH CREDIT INSTITUTIONS AND THE NATIONAL FINANCIAL INSTITUTION FOR AGRICULTURAL, RURAL, FORESTRY AND FISHERIES DEVELOPMENT

“INDEX … THIRD TITLE OPERATIONS WITH THE BANK OF MEXICO … CHAPTER IV DETERMINATION OF THE INTERBANK EQUILIBRIUM INTEREST RATE IN NATIONAL CURRENCY Section I Procedure for the determination of the TIIE for Terms Greater Than One Banking Business Day Article 146.- Repealed. Article 147.- Repealed. Article 148.- Repealed. Article 149.- Repealed. … Section II Financing or deposits related to the determination of the TIIE for Terms Greater Than One Banking Business Day Article 151.- Repealed. Article 152.- Repealed. Article 153.- Repealed. Article 154.- Repealed. Article 155.- Repealed. Article 156.- Repealed. Article 157.- Repealed. Article 158.- Repealed. Article 159.- Repealed. Section III General provisions for the TIIE for Terms Greater Than One Banking Business Day Article 160.- Repealed. … Article 161.- Repealed. Article 162.- Repealed. Article 163.- Repealed. … ANNEXES … Annex 12 Repealed. … Annex 12 Bis 6 Repealed.

Thursday, April 13, 2023 OFFICIAL GAZETTE 3 Annex 12 Bis 7 Repealed. …”

“Definitions Article 2º.- … TIIE for Terms Greater Than One Banking Business Day: The Interbank Equilibrium Interest Rate in national currency, for terms greater than one Banking Business Day, which is published by the Bank of Mexico in accordance with what is provided in Chapter IV of the Third Title of these Provisions. …”

“Reference interest rates Article 38.- … I.… I Bis. Repealed. II to V. … … When any of the reference rates provided for in the previous fraction II is used, the term of the CETES and BONDES, as applicable, to which the rate of the operations is referred, must be indicated. …”

“Guaranteed overdrafts Article 115.- … I. … II. The deposits derived from the Deposit Auctions, and III. The deposits in the Dollar Account referred to in article 120 of these Provisions that have been granted as guarantee to the Bank of Mexico for this purpose. IV. Repealed. …”

“Unsecured overdrafts Article 116.- … I. The amounts that must be deposited on account of the Deposit Auctions, and II. …”

“Application for participation Article 146.- Repealed.”

“Information for the presentation of quotes Article 147.- Repealed.”

“Procedure for the presentation of quotes Article 148.- Repealed.”

“Means for the presentation of quotes

4 OFFICIAL GAZETTE Thursday, April 13, 2023 Article 149.- Repealed.”

“Determination and dissemination of the TIIE for Terms Greater Than One Banking Business Day Article 150.- On each Banking Business Day, the Bank of Mexico will calculate the TIIE for Terms Greater Than One Banking Business Day, for each of the terms equivalent to 28, 91 and 182 days, in accordance with the procedure established in Annex 11 of these Provisions. The Bank of Mexico will make available to the Institutions the result of the calculation of the TIIE for Terms Greater Than One Banking Business Day starting from 12:30:00 hours of the same Banking Business Day on which it carries out said calculation, through the electronic, computing or telecommunications medium that it determines for such effect. The Bank of Mexico will publish in the Official Gazette of the Federation the TIIE for Terms Greater Than One Banking Business Day, on the Banking Business Day immediately following that on which they have been determined.”

“Determination of financing or deposits Article 151.- Repealed.”

“Formalization of financing Article 152.- Repealed.”

“Hours and priority Article 153.- Repealed.”

“Characteristics of credit operations Article 154.- Repealed.”

“Characteristics of repo operations Article 155.- Repealed.”

“Formalization of repos Article 156.- Repealed.”

“Early maturity of credit or repo operations Article 157.- Repealed.”

“Procedure in case of non-compliance in the formalization of operations Article 158.- Repealed.”

“Deposits in the Bank of Mexico Article 159.- Repealed.”

“Information on quotes Article 160.- Repealed.”

“Cessation of publication of the TIIE for Terms Greater Than One Banking Business Day Article 160 Bis.- In the event that the Bank of Mexico decides to terminate the determination and publication of the TIIE for Terms Greater Than One Banking Business Day, it will inform timely thereof through the communication media it determines. In this case, the Bank of Mexico will indicate the rate that will replace the referred TIIE for Terms Greater Than One Banking Business Day, for the corresponding effects.”

“Return of profits Article 161.- Repealed.”

“Contract to carry out credit or repo operations Article 162.- Repealed.”

“Interest rates

Thursday, April 13, 2023 OFFICIAL GAZETTE 5 Article 163.- Repealed.”

“Characteristics of credits Article 188.- … I to V Bis. … VI. … a) … b) Repealed. c) to d) … VII. … …”

“Formalization of assignments in Liquidity Auctions Article 192.- … During the validity of the deposits, the Institution may instruct through the SAGAPL that the deposit or the part of it that is not guaranteeing an overdraft of those mentioned in the previous paragraph, be used to guarantee the Liquidity Auctions provided for in Chapter VI of the Third Title of these Provisions. When the SAGAPL is not available, Institutions must send a request to the Bank of Mexico in a format substantially equal to the format attached to these Provisions as Annex 12 Bis. The document referred to in this paragraph must show knowledge of signatures, so these signatures must be previously registered at the Bank of Mexico. …”

“Obligation to constitute Special Guarantees Article 195 Bis 3.- Institutions that participate in the Liquidity Auctions, provided for in Chapter VI of the Third Title of these Provisions, must constitute Special Guarantees. … a) dollar deposits, in the case of credit operations regulated in article 188, and b) titles granted in repo operations, in the case of repos regulated in article 189. … Institutions must grant Special Guarantees for all operations that show write-downs, both those of credit guaranteed with dollar deposits in terms of article 188, as well as those of repo that they celebrate in terms of article 189, as applicable. The amount of the Special Guarantees must cover the total of the obligations at their charge for the celebration of such operations. … Special Guarantees must be deposited in a fund that guarantees the credit and repo operations that Institutions have celebrated with the Bank of Mexico in the Liquidity Auctions, in terms of articles 188 and 189.”

“Determination of the value of the Special Guarantees that must be constituted by Institutions

6 OFFICIAL GAZETTE Thursday, April 13, 2023 Article 195 Bis 4.- The Bank of Mexico will calculate, on each Banking Business Day, the total value of the Special Guarantees that Institutions must constitute for the guarantee fund in order to cover, if applicable, the write-downs of Dollar Deposits granted in pledge or of Titles granted in stock pledge based on the following: I. In the case of credits guaranteed with Dollar Deposits: The difference between (i) the value in Mexican pesos of the Dollar Deposits delivered in pledge in the credit operation celebrated by the Institution in question in terms of article 188 of these Provisions, at the exchange rate published by the Bank of Mexico in the Official Gazette of the Federation on the day of the corresponding valuation, applying the discount factor that will be made known through the SAGAPL, taking as base the procedure described in said article, and (ii) the sum of the principal of said credit plus the estimated interests corresponding to the credit referred to in the cited article 188. II. In the case of repos: The difference between (i) the value in Mexican pesos of the titles granted in stock pledge and the titles object of the repo celebrated by the Institution in question in terms of article 189 of these Provisions, taking as base the procedure described in Annex 7. The referred value will be calculated applying the prices and discount factors that will be made known through the SAGAPL on the day of the corresponding valuation, and (ii) the sum of the price plus the premium or estimated premium, as applicable, of the repo in question. … The Special Guarantees that the Institution constitutes must cover at all times, at least the added value of the write-downs that all dollar deposits and titles object of repos constituted as object of the credits and repo operations celebrated by said Institution with the Bank of Mexico, respectively, have had since the moment of their constitution, in the guarantee fund.”

“Constitution of Special Guarantees Article 195 Bis 5.- On each Banking Business Day, the Bank of Mexico will inform each of the Institutions, through the SAGAPL or any other electronic, computing or telecommunications medium authorized for such effect by the Bank of Mexico and made known to the Institutions, the total value of the Special Guarantees that must be constituted, for the guarantee fund to cover the value that has resulted at the charge of the Institution. … I. With respect to: a) BONDES; b) IPAB Values; c) BREMS; d) CETES excluding SPECIAL CETES, and e) Segregated Coupons, Institutions must constitute the Special Guarantee through stock pledge with transfer of ownership in the terms and under the conditions provided in the contract that they have celebrated for such effect in accordance with article 176 of these Provisions. Institutions must deposit the titles object of said Special Guarantee, through a transfer instructed by means of the SAGAPL or through any other electronic computing or telecommunications medium authorized for such effect by the Bank itself, into the Bank of Mexico account that, for such effects, it has opened in some institution for the deposit of values. For the foregoing, Institutions must present to the Operations Management Department, a mandate in favor of the Bank of Mexico in terms of Annex 10 of these Provisions, signed by whoever has the faculties referred to in article 176, of which they must send a copy to the institution for the deposit of values corresponding. Institutions must carry out the deposit of titles, before the time established in the SAGAPL manual on the Banking Business Day on which the Bank of Mexico has made known to them the amount of the respective Special Guarantees. If the SAGAPL is not available, Institutions must send a request to the Bank of Mexico in a format substantially equal to the format attached to these Provisions as Annex 12 Bis 5, no later than 16:00:00 hours of the Banking Business Day on which they intend to constitute the Special Guarantee, in which they indicate the types of values with which they intend to constitute said Special Guarantee, as well as the amount of each of them. The document referred to in this paragraph must show knowledge of signatures, so these signatures must be previously registered at the Bank of Mexico.

Thursday, April 13, 2023 OFFICIAL GAZETTE 7 II. … a) … b) Repealed; c) and d) …”

“ANNEX 5 Model of request for segregation of dollar deposits to the deposit account for guarantees or special guarantees (INSTITUTION OF CREDIT LETTERHEAD) Mexico City, on ___ of _________ of 20__. BANK OF MEXICO Operations Management Department Av. 5 de Mayo, number 6 Centro Neighborhood, Cuauhtémoc Mexico City, C.P. 06000 Present. By this conduct, I allow myself to request to the Bank of Mexico on behalf of (Full denomination of the credit institution including, if applicable, the financial group to which it belongs), that from this date it carry out the actions that result necessary to segregate in the deposit account for guarantees that it keeps at this Institution the amount of $______ (______dollars of the U.S.A.), in order to constitute pledge for: ___ To guarantee overdrafts in its Single Account, in terms of what is provided in article 115 of Circular 3/2012. ___ To guarantee credits with which assignments in Liquidity Auctions are formalized, in terms of what is provided in sub-paragraph d) of fraction VI of article 188 of Circular 3/2012. ___ To constitute Special Guarantees for credit or repo operations celebrated in the assignment of Liquidity Auctions, in accordance with what is established in article 195 Bis 5 of Circular 3/2012. (Mark the cases requested) Sincerely, (Name and signature of persons with signatures previously registered at Bank of Mexico) C.c.p.: Operations Support Directorate National Operations Department Subdepartment of Operations Management with Account Holders This communication must be directed to the following email account: operationsagapl@banxico.org.mx”

“ANNEX 5 BIS 1 Model of request to guarantee overdrafts in the Single Account, in accordance with what is provided in fraction I, of article 115 Bis of the Provisions applicable to the Operations of Credit Institutions, Regulated Multiple-Object Financial Societies that maintain equity links with Credit Institutions and of the National Financial Institution for Agricultural, Rural, Forestry and Fisheries Development, issued by the Bank of Mexico through Circular 3/2012 (INSTITUTION OF CREDIT LETTERHEAD) Mexico City, on ___ of _________ of 20__. BANK OF MEXICO Operations Management Department Av. 5 de Mayo number 6 Centro Neighborhood, Cuauhtémoc Mexico City, C.P. 06000 Present. By this conduct, I allow myself to request to the Bank of Mexico on behalf of (Full denomination of the credit institution including, if applicable, the financial group to which it belongs), that from the cash amount with which my represented party currently has on the date of presentation of this request as part of the monetary regulation deposit constituted in cash in terms of what is provided by Circular 9/2014 of the Bank of Mexico, segregate the amount of [___________] that is available in OMA to guarantee the overdrafts of my represented party in its Single Account. Sincerely, (Name and signature of persons with signatures previously registered at Bank of Mexico)

8 OFFICIAL GAZETTE Thursday, April 13, 2023 C.c.p.: Operations Support Directorate Subdepartment of Operations Management with Account Holders This communication must be directed to the email account indicated below: Email account. operationsagapl@banxico.org.mx”

“ANNEX 10 Model of mandate in favor of the Bank of Mexico to make charges and credits in the accounts that some institution for the deposit of values keeps (INSTITUTION OF CREDIT LETTERHEAD) Mexico City, on ___ of _________ of 20__. BANK OF MEXICO Operations Management Department. Avenida 5 de Mayo, number 6 Centro Neighborhood, Cuauhtémoc Mexico City, C.P. 06000 Present. (Full denomination of the credit institution including, if applicable, the financial group to which it belongs) hereby grants a special and irrevocable power to the Bank of Mexico so that, on its behalf, it instructs (Full denomination of the institution for the deposit of values), to carry out all charges and credits in the accounts that said institution for the deposit of values keeps to my represented party, on account of the repo operations that are celebrated: a) in the Liquidity Auctions; b) in the procedure to follow in case of insufficiency of resources to liquidate the amount of government values, c) to constitute special deposits to guarantee overdrafts in the Single Account of my represented party and d) to constitute special guarantees. For such effects, the Bank of Mexico must send to the cited institution for the deposit of values the instructions previously referred to. This credit institution will be responsible for the charge and credit requests that the Bank of Mexico carries out in compliance with the instructions that the Bank of Mexico sends to the referred institution for the deposit of values. Sincerely, (Name, signature and position of the official or officials of the institution with faculties to exercise acts of dominion) C.c.p.: (Full denomination of the corresponding institution for the deposit of values). For your information. Directorate of Payment Systems and Market Infrastructures Operation and Continuity”

“ANNEX 11 Procedure for the calculation of the TIIE for Terms Greater Than One Banking Business Day The Bank of Mexico will calculate, on each Banking Business Day, the TIIE for Terms Greater Than One Banking Business Day based on the following equation:

Where: the determination term of the TIIE for Terms Greater Than One Banking Business Day, equivalent to 28, 91 and 182 days for each category of TIIE for Terms Greater Than One Banking Business Day. the TIIE of Funding, expressed in percentage points, applicable on the Banking Business Day prior to that on which the Bank of Mexico calculates the TIIE for Terms Greater Than One Banking Business Day that corresponds in accordance with this Annex. A= the variable equivalent to the number of basis points in which, if applicable, the one-day interbank interest rate that the Board of Governors of the Bank of Mexico has determined as the target rate for monetary policy effects, applicable from the corresponding Banking Business Day to t and made known by the Bank of Mexico, through its internet website identified with the domain name: www.banxico.org.mx or through any other electronic, computing or

Thursday, April 13, 2023 OFFICIAL GAZETTE 9 telecommunications authorized for this purpose by the Bank of Mexico itself. This condition shall only be observed on the first day that the change in the target monetary policy rate determined by the Board of Governors becomes applicable. the constant equivalent to 24 basis points for any of the terms. Basis point: the equivalent to one hundredth of 1%, that is, 0.01%" "ANNEX 12 Format to participate in the determination of the TIIE for Terms Greater Than One Banking Day. Is repealed." "ANNEX 12 BIS Communication to the Operations Management Department to request the constitution of guarantees or special guarantees through deposits (PAPER WITH THE LETTERHEAD OF THE CREDIT INSTITUTION) Mexico City, on __ of _________ of 20__. BANK OF MEXICO Operations Management Department 5 de Mayo Avenue, number 6 Centro Neighborhood, Cuauhtémoc Mexico City, C.P. 06000 Present. By means of this communication, for the purposes of what is established in article 185, as well as fraction II of article 195 Bis 5 of the "Provisions applicable to the Operations of Credit Institutions and the National Financial Institution for Agricultural, Rural, Forestry and Fisheries Development" issued by that Bank of Mexico through Circular 3/2012, I request the Bank of Mexico on behalf of (Full name of the credit institution including, if applicable, the financial group to which it belongs), to carry out the actions that result necessary to segregate from the Deposits indicated below, the corresponding amounts to grant in pledge, with the object of Guaranteeing the credit operations with which assignments in Liquidity Auctions are formalized, in terms of what is provided in subsection d) of fraction VI of article 188 of Circular 3/2012. Constituting Special Guarantees for credit or repo operations carried out in the assignment of Liquidity Auctions, in accordance with what is established in article 195 Bis 5 of Circular 3/2012, integrating into the Liquidity Auction fund. TYPE OF DEPOSIT AMOUNT Regulatory monetary deposits that my represented entity maintains at the Bank of Mexico: $_____________________ Deposits constituted in accordance with Deposit Auctions: $___________________________ Dollar deposits that my represented entity maintains in its dollar account: $___________________________

10 OFFICIAL GAZETTE Thursday, April 13, 2023 Sincerely, (Name of the Assigned Institution) (Name and signature of persons with signatures previously registered at the Bank of Mexico) This communication must be directed to the following email account: operacion-sagapl@banxico.org.mx" "ANNEX 12 BIS 1 Communication to the Operations Management Department to request the substitution of deposits pledged or titles pledged as stock market collateral that constitute special guarantees (PAPER WITH THE LETTERHEAD OF THE CREDIT INSTITUTION) Mexico City, on __ of _________ of 20__. BANK OF MEXICO Operations Management Department 5 de Mayo Avenue, number 6 Centro Neighborhood, Cuauhtémoc Mexico City, C.P. 06000 Present By means of this communication, for the purposes of what is established in article 195 Bis 6 of the "Provisions applicable to the Operations of Credit Institutions and the National Financial Institution for Agricultural, Rural, Forestry and Fisheries Development" issued by that Bank of Mexico through Circular 3/2012, on behalf and for the account of my represented entity, (Full name of the credit institution, including, if applicable, the financial group to which it belongs), I communicate the request to carry out the substitution of the deposits or titles that this Institution, pledged or pledged as stock market collateral with the object of constituting the Special Guarantees of the obligations at its charge, carried out as a result of the assignment of the bids presented by this same Institution in the auctions carried out in accordance with Chapter VI of Title Third, of the cited Provisions. To this effect, the titles pledged as stock market collateral that this Institution requests be returned are the following: [For each of the titles considered indicate the following fields] ISIN NUMBER TITLES* NOMINAL VALUE* TYPE OF TITLE ISSUER SERIES* CURRENCY MATURITY DATE Mandatory fields. The titles to be pledged as stock market collateral, in substitution, are the following: ISIN NUMBER TITLES NOMINAL VALUE* TYPE TITLE ISSUER SERIES* CURRENCY MATURITY DATE CREDIT RATING LAST PRICE OR AVAILABLE VALUATION *Mandatory fields. The deposits pledged that this Institution requests be returned are the following:

Thursday, April 13, 2023 OFFICIAL GAZETTE 11 TYPE OF DEPOSIT AMOUNT Regulatory monetary deposits that my represented entity maintains at the Bank of Mexico: $___________________________ Deposits constituted in accordance with Deposit Auctions: $___________________________ Dollar deposits that my represented entity maintains in its dollar account: $___________________________ The deposits to be pledged, in substitution, are the following: TYPE OF DEPOSIT AMOUNT Regulatory monetary deposits that my represented entity maintains at the Bank of Mexico: $___________________________ Deposits constituted in accordance with Deposit Auctions: $___________________________ Dollar deposits that my represented entity maintains in its dollar account: $___________________________ Sincerely, (Name of the Assigned Institution) (Name and signature of persons with signatures previously registered at the Bank of Mexico) This communication must be directed to the following email account: operacion-sagapl@banxico.org.mx" "ANNEX 12 BIS 2 Communication to the Operations Management Department to request the return of excess special guarantees constituted with titles (PAPER WITH THE LETTERHEAD OF THE CREDIT INSTITUTION) Mexico City, on __ of _________ of 20__ BANK OF MEXICO Operations Management Department 5 de Mayo Avenue, number 6 Centro Neighborhood, Cuauhtémoc Mexico City, C.P. 06000 Present By means of this communication, for the purposes of what is established in article 195 Bis 7 of the "Provisions applicable to the Operations of Credit Institutions and the National Financial Institution for Agricultural, Rural, Forestry and Fisheries Development" issued by that Bank of Mexico through Circular 3/2012, on behalf and for the account of my represented entity, (Full name of the credit institution, including, if applicable, the financial group to which it belongs), I communicate the request that the titles that this Institution, pledged as stock market collateral to constitute the Special Guarantees of the obligations at its charge, carried out as a result of the assignment of the bids presented by this same Institution in the auctions carried out in accordance with what is provided in Chapter VI of Title Third of the cited Provisions and that correspond to the excess amount of that referred to the Special Guarantees, calculated in accordance with those same Provisions, be returned. Titles for which their return is requested [For each of the titles considered indicate the following fields] ISIN NUMBER TITLES* NOMINAL VALUE* TYPE OF TITLE ISSUER SERIES* CURRENCY MATURITY DATE

12 OFFICIAL GAZETTE Thursday, April 13, 2023 *Mandatory fields. Sincerely, (Name of the Assigned Institution) (Name and signature of persons with signatures previously registered at the Bank of Mexico) This communication must be directed to the following email account: operacion-sagapl@banxico.org.mx" "ANNEX 12 BIS 3 Communication to the Operations Management Department to request the return of excess special guarantees constituted with deposits (PAPER WITH THE LETTERHEAD OF THE CREDIT INSTITUTION) Mexico City, on __ of _________ of 20__ BANK OF MEXICO Operations Management Department 5 de Mayo Avenue, number 6 Centro Neighborhood, Cuauhtémoc Mexico City, C.P. 06000 Present By means of this communication, for the purposes of what is established in article 195 Bis 7 of the "Provisions applicable to the Operations of Credit Institutions and the National Financial Institution for Agricultural, Rural, Forestry and Fisheries Development" issued by that Bank of Mexico through Circular 3/2012, I request the Bank of Mexico on behalf of (Full name of the credit institution, including, if applicable, the financial group to which it belongs), to carry out the actions that result necessary for the termination of the pledge constituted with the Deposits indicated below and that integrate the guarantee fund in terms of what is provided in Chapter VIII of Title Third of the cited Circular. TYPE OF DEPOSIT AMOUNT Regulatory monetary deposits that my represented entity maintains at the Bank of Mexico: $___________________________ Deposits constituted in accordance with Deposit Auctions: $___________________________ Dollar deposits that my represented entity maintains in its dollar account: $___________________________

Thursday, April 13, 2023 OFFICIAL GAZETTE 13 Sincerely, (Name of the Assigned Institution) (Name and signature of persons with signatures previously registered at the Bank of Mexico) This communication must be directed to the following email account: operacion-sagapl@banxico.org.mx" "ANNEX 12 BIS 4 Model of request to transfer the titles subject to the repos referred to in article 189 of Circular 3/2012 to the securities deposit account that the institution for the deposit of securities maintains at the Bank of Mexico (PAPER WITH THE LETTERHEAD OF THE CREDIT INSTITUTION) Mexico City, on __ of _________ of 20__ BANK OF MEXICO Operations Management Department 5 de Mayo Avenue, number 6 Centro Neighborhood, Cuauhtémoc Mexico City, C.P. 06000 Present By means of this communication, for the purposes of what is established in article 189 of the "Provisions applicable to the Operations of Credit Institutions and the National Financial Institution for Agricultural, Rural, Forestry and Fisheries Development" issued by that Bank of Mexico through Circular 3/2012, I request the Bank of Mexico on behalf of (Full name of the credit institution, including, if applicable, the financial group to which it belongs), to carry out the actions that result necessary to carry out the formalization of the repo operations carried out in the procedure for the assignment of Liquidity Auctions in accordance with what is established in the aforementioned article 189 of Circular 3/2012 with the titles indicated below: [For each of the titles considered indicate the following fields] ISIN NUMBER TITLES* NOMINAL VALUE* TYPE OF TITLE ISSUER SERIES* CURRENCY MATURITY DATE

14 OFFICIAL GAZETTE Thursday, April 13, 2023 Sincerely, (Name of the Assigned Institution) (Name and signature of persons with signatures previously registered at the Bank of Mexico) This communication must be directed to the following email account: operacion-sagapl@banxico.org.mx" "ANNEX 12 BIS 5 Communication to the Operations Management Department to request the constitution of special guarantees with titles (PAPER WITH THE LETTERHEAD OF THE CREDIT INSTITUTION) Mexico City, on __ of _________ of 20__ BANK OF MEXICO Operations Management Department 5 de Mayo Avenue, number 6 Centro Neighborhood, Cuauhtémoc Mexico City, C.P. 06000 Present By means of this communication, for the purposes of what is established in fraction I of article 195 Bis 5 of the "Provisions applicable to the Operations of Credit Institutions and the National Financial Institution for Agricultural, Rural, Forestry and Fisheries Development" issued by that Bank of Mexico through Circular 3/2012, I request the Bank of Mexico on behalf of (Full name of the credit institution, including, if applicable, the financial group to which it belongs), to carry out the actions that result necessary to carry out the constitution of the special guarantees with the titles indicated below to guarantee the obligations at its charge in the credit or repo operations carried out in the procedure for the assignment of Liquidity Auctions in accordance with what is established in article 195 Bis 5 of Circular 3/2012 integrating into the Liquidity Auction fund: [For each of the titles considered indicate the following fields] ISIN NUMBER TITLES* NOMINAL VALUE* TYPE OF TITLE ISSUER SERIES* CURRENCY MATURITY DATE [indicate the operation that guarantees] Sincerely, (Name of the Assigned Institution) (Name and signature of persons with signatures previously registered at the Bank of Mexico) This communication must be directed to the following email account:

Thursday, April 13, 2023 OFFICIAL GAZETTE 15 operacion-sagapl@banxico.org.mx" "ANNEX 12 Bis 6 Commitment Declaration to the Code of Conduct in the determination of Interbank Equilibrium Interest Rates (TIIE) for terms greater than one Banking Day Is repealed." "ANNEX 12 Bis 7 Code of Conduct in the Determination of Interbank Equilibrium Interest Rates (TIIE) for terms greater than one Banking Day Is repealed." TRANSITORY PROVISIONS FIRST.- The modifications to the "Provisions applicable to the operations of credit institutions, multiple-object financial societies regulated that maintain patrimonial links with credit institutions and the National Financial Institution for Agricultural, Rural, Forestry and Fisheries Development" provided for in this Circular will enter into force on January 1, 2025, without prejudice to what is provided in the following transitory articles. SECOND.- From January 1, 2024, Institutions that enter into contracts to formalize new operations must refrain from using as a reference in said contracts the Interbank Equilibrium Interest Rates in national currency for terms of 91 and 182 days. However, Institutions may continue to use, as a reference rate, the Interbank Equilibrium Interest Rates in national currency for terms of 91 and 182 days, as applicable, that the Bank of Mexico publishes in accordance with Chapter IV of Title Third of the "Provisions applicable to the operations of credit institutions, multiple-object financial societies regulated that maintain patrimonial links with credit institutions and the National Financial Institution for Agricultural, Rural, Forestry and Fisheries Development" issued by the Bank of Mexico through Circular 3/2012, published in the Official Gazette of the Federation on March 2, 2012, as it has been modified by subsequent resolutions, only in those operations that they carry out under contracts entered into prior to the date indicated in this article, as well as in stock certificates issued with reason for multianual investment programs formalized prior to the same date. In these cases, Institutions may use the indicated reference rates until the maturity of the referred contracts. Likewise, from January 1, 2024, the Bank of Mexico will calculate the Interbank Equilibrium Interest Rates in national currency for terms of 91 and 182 days in accordance with the methodology established in Annex 11 of the "Provisions applicable to the operations of credit institutions, multiple-object financial societies regulated that maintain patrimonial links with credit institutions and the National Financial Institution for Agricultural, Rural, Forestry and Fisheries Development" in the terms of the modifications provided for in this Circular. THIRD.- From January 1, 2025, Institutions that enter into contracts to formalize new operations must refrain from using as a reference in said contracts the Interbank Equilibrium Interest Rate in national currency for a term of 28 days. However, Institutions may continue to use, as a reference rate, the Interbank Equilibrium Interest Rate in national currency for a term of 28 days that the Bank of Mexico publishes in accordance with Chapter IV of Title Third of the "Provisions applicable to the operations of credit institutions, multiple-object financial societies regulated that maintain patrimonial links with credit institutions and the National Financial Institution for Agricultural, Rural, Forestry and Fisheries Development" issued by the Bank of Mexico through Circular 3/2012, published in the Official Gazette of the Federation on March 2, 2012, as it has been modified by subsequent resolutions, only in those operations that they carry out under contracts entered into prior to the date indicated in this article, as well as in stock certificates issued with reason for multianual investment programs formalized

16 OFFICIAL GAZETTE Thursday, April 13, 2023 prior to the same date. In these cases, Institutions may use the indicated reference rate until the maturity of the referred contracts. Likewise, from January 1, 2025, the Bank of Mexico will calculate the Interbank Equilibrium Interest Rate in national currency for a term of 28 days in accordance with the methodology established in Annex 11 of the "Provisions applicable to the operations of credit institutions, multiple-object financial societies regulated that maintain patrimonial links with credit institutions and the National Financial Institution for Agricultural, Rural, Forestry and Fisheries Development" in the terms of the modifications provided for in this Circular. Mexico City, on April 3, 2023.- BANK OF MEXICO: Director General of Central Banking Operations, Gerardo Israel García López.- Rubric.- Director of Central Banking Provisions, María Teresa Muñoz Arámburu.- Rubric. For any queries regarding the content of this Circular, the Bank of Mexico is at your disposal through the Central Banking Authorizations and Sanctions Directorate at telephone (55) 5237-2000 extension 3200.