1. Unless otherwise provided for in this Agreement, the United Kingdom shall be liable to the Union for the United Kingdom's share of the budgetary commitments of the Union budget and the budgets of the Union decentralised agencies outstanding on 31 December 2020 and for the United Kingdom's share of the commitments made in 2021 on the carryover of commitment appropriations from the budget for 2020.

The first subparagraph shall not apply to the following commitments outstanding on 31 December 2020:

(a) those commitments related to the programmes and bodies to which Article 11 of Regulation (EU, Euratom) No 609/2014 applies with regard to the United Kingdom;

(b) those commitments financed by assigned revenue in the Union budget.

With regard to the Union's decentralised agencies, the amount of their commitments referred to in the first subparagraph shall only be taken into account in proportion to the share of contributions from the Union budget in their overall revenues for the period 2014-2020.

2. The Union shall calculate the amount of commitments referred to in paragraph 1 on 31 December 2020. It shall communicate that amount to the United Kingdom by 31 March 2021, adding a list with the reference key of each commitment, the associated budget lines, and the amount for each associated budget line.

3. The Union shall, by 31 March of each year, starting in 2022, with regard to the commitments referred to in paragraph 1, communicate to the United Kingdom:

(a) information on the amount of commitments outstanding on 31 December of the previous year and on the payments and decommitments made in the previous year, including an update of the list referred to in paragraph 2;

(b) an estimate of the expected payments in the current year based on the level of payment appropriations in the budget;

(c) an estimate of the expected contribution of the United Kingdom to the payments referred to in point (b); and

(d) other information, such as a medium term payment forecast.

4. The annual amount payable shall be calculated as the United Kingdom's share of the estimate referred to in point (b) of paragraph 3 adjusted by the difference between the payments made by the United Kingdom in the previous year and the United Kingdom's share of the payments made by the Union in the previous year on the outstanding commitments referred to in paragraph 1, reduced by the amount of net financial corrections in relation to programmes and activities financed under the MFF 2014-2020 or previous financial perspectives and reduced by the proceeds of any infringement procedures concerning the failure of a Member State to make available own resources related to financial years until 2020, provided that those amounts have been received by the budget in the previous year and are definitive. The annual amount payable by the United Kingdom shall not be adjusted in the given year.

In 2021, the annual amount payable by the United Kingdom shall be reduced by the United Kingdom's share in the financing of the budget for 2020 of the amount of payment appropriations carried over from 2020 to 2021 in accordance with Articles 12 and 13 of the Financial Regulation and by the United Kingdom's share of the total amount of traditional own resources made available to the Union in January and February 2021 in respect of which the Union's entitlements were established in accordance with Article 2 of Regulation (EU, Euratom) No 609/2014 in November and December 2020. The Union shall also reimburse to the United Kingdom the United Kingdom's share of the total amount of traditional own resources made available by the Member States after 31 December 2020 for goods released for free circulation in respect of ending or discharge of temporary storage or customs procedures referred to in Article 49(2) started before or on this date.

5. At the request of the United Kingdom, made at the earliest after 31 December 2028, the Union shall make an estimate of the remaining amounts to be paid by the United Kingdom under this Article, on the basis of a rule taking into account the amount of outstanding commitments at the end of the year and an estimate of any decommitments on those outstanding commitments, any financial corrections and any proceeds from the infringement procedures after the end of the year. After the confirmation by the United Kingdom of the acceptance of the proposal to the Committee on the financial provisions referred to in point (f) of Article 165(1) and the Joint Committee, the United Kingdom shall pay the estimated amount, as adjusted in accordance with paragraph 4 of this Article, in relation to the payments made by the United Kingdom in the previous year. The payment of the amounts referred to in this paragraph shall extinguish the remaining obligations of the United Kingdom or the Union under this Article.