The Taxes and Duties, etc (Interest Rate) (Amendment) Regulations 2025

Published: Wed 26th Mar 25 Came into force: Sun 6th Apr 25

The 2025 regulations amended multiple existing tax regulations, increasing the interest rate payable to HMRC on outstanding tax liabilities.


The Taxes and Duties, etc (Interest Rate) (Amendment) Regulations 2025 amend several existing regulations to increase the interest rate on unpaid taxes owed to HMRC. The changes affect various tax areas, including income tax, air passenger duty, and customs duties, raising the interest rate by 1.5% in each affected area.

The regulations came into force on April 6, 2025, and are supported by prior legislation.

Arguments For

  • Increased Revenue for the Government: Higher interest rates on unpaid taxes will generate more revenue for the government, potentially improving public finances and reducing the national debt.

  • Deterrent to Tax Evasion: Increased penalties encourage timely tax payments, discouraging tax evasion and ensuring a fairer system.

  • Alignment with Inflation: Raising interest rates can help align penalties with current inflation rates, making penalties more effective.

  • Legal Precedent: The amendments are made under existing legal powers in various Finance Acts, providing a solid legal basis for the changes.

Arguments Against

  • Burden on Taxpayers: Higher interest rates increase the financial burden on taxpayers who are already struggling, potentially leading to hardship for individuals and businesses.

  • Administrative Costs: Implementing and enforcing changes could strain the resources of HMRC leading to potential increased administrative expenditure in the process.

  • Impact on Businesses: Increases in interest payments could negatively impact liquidity for small businesses, potentially harming economic activity.

  • Potential for unintended consequences: The elevated interest rate could lead to unforeseen consequences in the business and wider economy and may encourage actions to mitigate the effects of higher taxes.

The Treasury make these Regulations in exercise of the powers conferred by section 178(1) to (3) of the Finance Act 19891, section 197(1) to (3) of the Finance Act 19962, section 103(1) and (3) of the Finance Act 20093 and section 32(13) of, and paragraph 5(1), (2)(d) and (3) of Schedule 6 to, the Taxation (Cross-border Trade) Act 20184.

  1. Citation and commencement These Regulations may be cited as the Taxes and Duties, etc (Interest Rate) (Amendment) Regulations 2025 and come into force on 6th April 2025.
  1. Amendment of the Taxes (Interest Rate) Regulations 1989 (1) The Taxes (Interest Rate) Regulations 19895 are amended as follows. (2) In regulations 3(3), 3A(3), 3AA(3), 3AC(3), 3ZB(3), 3ZC(3) and 4(3), in the formula, for “2.5” substitute “4”. (3) In regulation 3ZA(4), in the formula, for “1” substitute “2.5”. (4) In regulation 5A— (a) at the end of paragraph (a), omit “and”; (b) in paragraph (b), for “thereafter.” substitute “for the period beginning with 6 April 2017 and ending with 5 April 2025, and”; (c) after paragraph (b), insert— “4% per annum thereafter.”
  1. Amendment of the Air Passenger Duty and Other Indirect Taxes (Interest Rate) Regulations 1998 (1) The Air Passenger Duty and Other Indirect Taxes (Interest Rate) Regulations 19986 are amended as follows. (2) In regulation 4(3), in the formula, for “2.5” substitute “4”.
  1. Amendment of the Taxes and Duties, etc (Interest Rate) Regulations 2011 (1) The Taxes and Duties, etc (Interest Rate) Regulations 20117 are amended as follows. (2) In regulation 3(1), in the formula, for “2.5” substitute “4”.
  1. Amendment of the Customs (Import Duty) (EU Exit) Regulations 2018 (1) The Customs (Import Duty) (EU Exit) Regulations 20188 are amended as follows. (2) In regulation 45(4), in the formula, for “2” substitute “3.5”.

Jeff Smith Vicky Foxcroft Two of the Lords Commissioners of His Majesty's Treasury 25th March 2025

Explanatory Note (This note is not part of the Regulations) These Regulations make provision concerning the rate of interest applying to certain amounts payable to the Commissioners for His Majesty’s Revenue and Customs (“HMRC”). Regulation 2 amends various provisions of the Taxes (Interest Rate) Regulations 1989 (S.I. 1989/1297). Regulation 3 amends regulation 4(3) of the Air Passenger Duty and Other Indirect Taxes (Interest Rate) Regulations 1998 (S.I. 1998/1461). Regulation 4 amends regulation 3(1) of the Taxes and Duties, etc (Interest Rate) Regulations 2011 (S.I. 2011/2446). Regulation 5 amends regulation 45(4) of the Customs (Import Duty) (EU Exit) Regulations 2018 (S.I. 2018/1248). Each of these amendments increases the interest payable to HMRC on unpaid tax liabilities by 1.5%. A Tax Information and Impact Note covering this instrument will be published on the government website at http://www.gov.uk/government/collections/tax-information-and-impact-notes-tiins.

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