Reception Hours for Procedures at the BCB

EXTERNAL CIRCULAR La Paz, July 21, 2026 CIEX N° 12/2026 FROM: GENERAL MANAGEMENT ADMINISTRATION AND FINANCE MANAGEMENT TO: PUBLIC SECTOR ENTITIES PRIVATE AND FINANCIAL SYSTEM ENTITIES GENERAL PUBLIC SUBJECT: RECEPTION HOURS FOR PROCEDURES AT THE BCB

Dear Sirs:

This is to inform you that, effective immediately, the Single Correspondence Window (VUC) and official channels will receive physical and digital procedures during the following hours:

N° TYPE OF PROCEDURES RECEPTION HOURS 1 General Procedures (TGL) From 8:30 to 16:30 2 Operation Request Procedures (TSO) From 8:30 to 16:30, as per the Annexes of this circular.

Furthermore, the following aspects must be considered:

1. Operation Request Procedures (TSO)

Operation Request Procedures must be addressed to the corresponding operational area and must mandatorily include the type of procedure (Operation Request) and the detailed operation description in the Annexes in the reference. Additionally, TSOs must have two authorized signatures previously accredited with the BCB; requests whose signatures do not match the records held by the BCB will not be admitted. The Single Correspondence Window may reject requests when the submitted documentation contains errors in numerical or literal figures, alterations, is incomplete, or does not comply with the current requirements and regulations established for carrying out operations.

2. Official Contact Channels for Digital Procedures

The official email address: tramites@bcb.gob.bo and the WEB portal https://www.bcb.gob.bo/tramites_digitales are enabled as official contact points and electronic channels for receiving digital procedures.

The Administration and Finance Management, through the Document Management and Library Department, will be responsible for compliance and corresponding control.

External Circular CIEX N° 3/2024 of January 10, 2024, is hereby rendered null and void.

Sincerely,

DIGITALLY SIGNED DOCUMENT Oscar Felipe Navarro Venegas ACTING ADMINISTRATION AND FINANCE MANAGER Gastón Elías Cordero Crespo ACTING GENERAL MANAGER Validate digital signatures at validar.firmadigital.bo GECC/OFNV

ANNEX N° 1 DEADLINE RECEPTION OF OPERATION REQUEST PROCEDURES FROM THE PUBLIC SECTOR

N° AREA TYPE OF OPERATION RECEPTION DEADLINE 1 GOI-SOEXT Foreign currency transfer abroad 12:00 2 GOI-SOEXT Opening of Letters of Credit 15:30 3 GOI-SOEXT External Debt Disbursements 15:30 4 GOI-SOEXT Payment of public external debt with a future value date 15:30 5 GOM-SOSP Credit to fiscal current accounts at Banco Unión. 15:30 6 GOM-SOSP Credit to fiscal current accounts at Financial Entities 15:30 7 GOM-SOSP Periodic collection operations (or their suspension) with 1 day's notice 15:30 8 GOM-SOSP Payment orders from the MEFP to Autonomous Territorial Entities, their Deconcentrated, Decentralized Entities and Public Companies, and Public Universities 15:30 9 GOM-SOSP Transfer Orders (OT) for tax and customs collections due to contingency 15:30 10 GOM-SOSP Payment of commissions to the BCB 15:30 11 GOM-SOSP Transfers from and to other MEFP accounts 15:30 12 GOM-SOSP Transfers between Fiscal Accounts 15:30 13 GOM-SOSP Debit from MEFP accounts for payment due to maturity of its Securities 16:30

ANNEX N° 2 DEADLINE RECEPTION OF OPERATION REQUEST PROCEDURES FROM THE FINANCIAL SECTOR

N° AREA TYPE OF OPERATION RECEPTION DEADLINE 1 GOM-SOMA Request for credit to current or reserve account for early cancellation of public securities recorded in account. 11:00 2 GOM-SOMA Request for credit to current or reserve account for maturity of public securities recorded in account. (Collection of Economic Rights) 12:00 3 GOM-SOMA Request for credit to current or reserve account for early cancellation of repos. 12:00 4 GOM-SOMA Authorization of debit to the current or reserve accounts of the Liquidating Bank for 2% of the nominal value awarded as collateral, for financial entities that do not have accounts at the BCB. (TGN securities auction) 12:00 5 GOM-SOMA Submission by the EDV of the collection of Economic Rights (depending on the attorney-in-fact). 12:00 6 GGRAL-SRRA Request for BUN operations 16:00 7 GEF-SSPSF Operations enabled in the LIP System (only entities declared in contingency) 16:00 8 GEF-SSPSF Financial System Operations not enabled in the LIP System (CPVIS-CAPROSEN-FIUSEER-CPRO-BDP) 16:00 9 GEF-SSPSF Payment orders (business day prior to cash delivery) 16:00 10 GOM-SOMA Communication from the EDV regarding maturities of dematerialized securities with a list of last holders to be paid. 16:00 11 GOM-SOMA Submission by the EDV of the report on Release of securities in collateral for the Cancellation of Dematerialized Securities. 16:00 12 GOM-SOMA Submission by the EDV of communication regarding registration of embargo and lifting of retention of funds from securities recorded in the account registration system. 16:00 13 GOM-SOMA Authorization for Debit and Credit to Current Account and Legal Reserve by the Liquidating Bank for operations of purchase of public securities and/or repos. 16:30 14 GOM-SOMA Enabling of indirect participant(s) for operations of purchase of public securities and/or repos. 16:30