Circular SINAP 1-231 National Payments System – Electronic Clearing Chambers Update

"Year of the Reconstruction of the Argentine Nation" COMMUNICATION “A” 8282 07/21/2025 TO FINANCIAL ENTITIES, TO ELECTRONIC CLEARING CHAMBERS, TO AUTOMATED TELLER MACHINE NETWORKS, TO ELECTRONIC FUND TRANSFER NETWORKS: Ref.: Circular SINAP 1-231: National Payments System – Electronic Clearing Chambers. Update.

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We address you to deliver enclosed the sheets that, replacing those previously provided, should be incorporated into the consolidated text on the National Payments System – Electronic Clearing Chambers based on the clarifications disclosed by Communication B 13001. It is recalled that on this Institution’s website www.bcra.gob.ar, by accessing “Financial System – LEGAL AND REGULATORY FRAMEWORK – Consolidation and Summaries – Consolidated General Regulatory Texts”, the modifications made with specially highlighted text (strikethrough and bold) will be found. We salute you attentively. CENTRAL BANK OF THE ARGENTINE REPUBLIC Irene T. Cano Matías A. Gutiérrez Girault Deputy General Manager of Systems Payment Systems Principal Manager of Payment Systems and Current Accounts a/c ANNEX

In the event that the debtor balance reaches the guaranteed amount, entities must transfer through the MEP (Electronic Payments Market), to the administrator's account open at the BCRA, the funds that increase said amount to allow the processing of the aforementioned DEBINs. ii) Settlement Procedure The settlement procedure provided for the cancellation of balances from operations between entities providing the DEBIN service shall be adjusted as follows: a) On business days, the administrator must generate the net debtor and creditor balances of all operations involved and report these balances to its affiliated entities. b) All entities must pay the debtor balances within established hours, via transfers processed through the MEP to the account determined by the administrator, using payment instructions including the phrase “DEBIN”. c) If within the defined hours between the administrator and the entity, any debtor entity has not deposited the total sum in the determined account, the administrator will proceed to liquidate the guarantee. d) Once all debtor balances are covered, the administrator will proceed to transfer funds to entities presenting a creditor balance, debiting its account and crediting each entity's account at the BCRA. At the same time, it will return to entities any excess deposited sums.

9.2.3.3. Mechanism applicable outside MEP operating hours i) Calculation of Guarantees Regarding the real-time guarantee monitoring required by online accreditation instruments (DEBIN and immediate transfers), when a financial entity's net debtor balance exceeds the corresponding guarantee established outside MEP operating hours, administrators will allow such transactions to continue processing provided that the debtor balance excess does not exceed an amount that must have been coordinated between each financial entity and the corresponding administrator. To this effect, the entity must indicate to CEC-BV what fraction of the amount deducted from integrated guarantees for deferred accreditation instruments will be assigned to cover debtor balances of online accreditation instruments. This amount may not exceed, and must be deducted from, the integrated guarantees in favor of that financial entity for deferred accreditation instruments in the same currency, as established in point 9.2.1.

B.C.R.A. NATIONAL PAYMENTS SYSTEM – ELECTRONIC CLEARING CHAMBERS Section 9. Guarantees Version: 4th COMMUNICATION “A” 8282 Effective Date: 07/22/2025 Page 11

CONSOLIDATED TEXT ORIGIN REGULATION OBSERVATIONS Section Point Para. Comm. Annex/ Ch. Pt. Para.

1. “A” 2557 unique S/Com. “A” 4247 and 7739. 1.1. “A” 2557 “ 7.1. S/Com. “A” 7739. 1.2. “A” 2557 “ 7.2. S/Com. “A” 7739.
2. 2.1. “A” 2557 “ 2. S/Com. “A” 3029. 2.2. “A” 2557 “ “
3. 3.1. “A” 2557 “ 3. 3.2. “A” 2557 “ “ 3.3. “A” 2557 “ “ 3.4. “A” 2557 “ “ 3.5. “A” 2557 “ “ 3.6. “A” 2557 “ “ 3.7. “A” 2557 “ “ 3.8. “A” 2557 “ “ 3.9. “A” 2557 “ “ 3.10. “A” 2557 “ “ 3.11. “A” 2557 “ “ 3.12. “A” 6117 1. S/Com. “A” 7739 and 8103.
4. 4.1. “A” 2557 unique 4. 4.1.4. “A” 2557 “ “ S/Com. “A” 3029. 4.1.7. “A” 2557 “ “ S/Com. “A” 7739. 4.2. “A” 2557 “ “ S/Com. “A” 7739. 4.3. “A” 2557 “ “ S/Com. “A” 7739. 4.4. “A” 2557 “ “ S/Com. “A” 7739. 4.5. “A” 2557 “ “ 4.6. “A” 2557 “ “
5. “A” 2557 “ 6. S/Com. “A” 7739.
6. “A” 2557 “ 7. S/Com. “A” 7739.
7. 7.1. “A” 2557 “ 8. 7.1.9. “A” 2557 “ 8. S/Com. “B” 8819. 7.1.11. “A” 4730 7.1.12. “A” 4730 7.1.13. “A” 4941 S/Com. “A” 7739. 7.1.14. “A” 6099 S/Com. “A” 7739. 7.1.15. “A” 6578 S/Com. “A” 7739. 7.1.16. “A” 7219 S/Com. “A” 7739. 7.1.17. “A” 7989 5. 7.2. “A” 2557 unique 8.2.
8. 8.1. “A” 2557 unique 9.1. 8.2. “A” 2557 “ 9.2. S/Com. “A” 4247.
9. 9. “A” 4247 unique S/Com. “A” 7739 and 8051. 9.1. “A” 4247 “ S/Com. “A” 7739. 9.1.3. “A” 4247 “ S/Com. “A” 5247 and 7739. 9.2.1. “A” 4247 “ S/Com. “A” 7739, 7989, 8103 and 8104. Includes regulatory clarification. 9.2.2. “A” 4247 “ S/Com. “A” 5247 and 7739. 9.2.3. “A” 5196 S/Com. “A” 6285, 6698, 7739, 7761, 7818, 7989, 8051, 8282 and “B” 13001.

B.C.R.A. ORIGIN OF THE PROVISIONS CONTAINED IN THE CONSOLIDATED TEXT ON “NATIONAL PAYMENTS SYSTEM – ELECTRONIC CLEARING CHAMBERS”