Circular SINAP 1-239 National Payments System – Electronic Clearing Chambers. Adaptation.

. “Year of the Reconstruction of the Argentine Nation” “Year of the Reconstruction of the Argentine Nation” . COMMUNICATION “A” 8353 12/11/2025 TO FINANCIAL ENTITIES, TO ELECTRONIC CLEARING CHAMBERS, TO ATM NETWORKS, TO ELECTRONIC FUND TRANSFER NETWORKS: Ref.: Circular SINAP 1-239: National Payments System – Electronic Clearing Chambers. Adaptation.

We address you to inform you that this Institution has adopted the resolution which, in its pertinent part, provides: “1- Establish, with a maximum implementation deadline of 10/03/26 inclusive, that the calculation and settlement of the guarantees that entities associated with ATM networks must constitute to cover net debtor balances arising from such operations will cease to be covered under point 9.2.2. and shall be adjusted to point 9.2.3.1. of the ordered text on the National Payments System – Electronic Clearing Chambers. To this effect: a) The net balances and guarantee requirements referred to in point 9.2.3.1. shall consider immediate transfer and ATM operations jointly, so that each entity will have –for each currency class settled– a single net balance and guarantee requirement. b) The guarantee requirement of point 1.a) shall be fulfilled in a single account –one per each currency class settled–, so that immediate transfer guarantee accounts will be unified with those used for ATM balance settlement. 2- Provide that, until the unified computation of positions and the determination, integration, monitoring, and settlement of guarantees required in point 1 of this communication is implemented, the administrators covered by that provision and the low-value electronic clearing chamber may, for the purposes of monitoring and settlement provided in subpoints i) and ii) of point 9.2.3.3., respectively, consider the guarantee accounts and positions in both operations –for each currency class settled– jointly. 3- Allow, within the operating hours of the Electronic Payments Medium (MEP), that the low-value electronic clearing chamber applies guarantees from online credit instruments it administers (DEBIN and immediate transfers under its scheme) to compensated products in accordance with point 9.2.1. of the ordered text on the National Payments System – Electronic Clearing Chambers. To this effect, it shall deduct the amounts applied from the guarantees integrated in its favor for such online credit instruments.”

-2- On the other hand, we inform you that for compliance with Communication B 13001, financial entities, administrators of immediate transfer schemes and ATM networks Red Link SA and Newpay SAU, and the low-value electronic clearing chamber (COELSA) shall comply with the following: a) Upon completion of the settlement cycle for instruments under point 9.2.1. of the ordered text National Payments System – Payment Services and before 7:45 p.m. (nineteen forty-five hours) of that business day, each financial entity must indicate to COELSA, through the channel and mechanism determined by it, what fraction and amount of the guarantees under that point will be allocated to cover potential net debtor balances in immediate transfers and ATM operations with Red Link SA and Newpay SAU. b) At 7:45 p.m. (nineteen forty-five hours) of that day, COELSA will inform, through the channel and mechanism determined by it, Red Link SA and Newpay SAU of the amount and fraction of guarantees under point 9.2.1. that each requested financial entity will use to cover the operations they administer (i.e., immediate transfers and ATM operations). c) At 8:00 a.m. (eight hours) of the following business day, Newpay SA and Red Link SA administrators will inform the involved financial entities and COELSA, through the channel and mechanism determined by it, of the amount of guarantee referred to in the previous point that was usufructed to secure immediate transfers and ATM operations, so that through the MEP and before 10:00 a.m. (ten hours) they make an advance payment for that amount. Subsequently, we will send you the sheets that, replacing those duly provided, shall be incorporated into the referenced regulations. We remain, respectfully yours. BANCO CENTRAL DE LA REPÚBLICA ARGENTINA Matías A. Gutiérrez Girault Alejandra I. Sanguinetti Chief Manager of Payment Systems and Current Accounts on behalf of Deputy General Manager of Payment Means