Permanent increase to penalty interest rates
The new tax year saw a change to the way interest on late paid taxes is calculated. What’s changed and what are the new charges?
Prior to 2025/26, interest was charged at the Bank of England base rate plus 2.5% on most underpaid taxes. In a push for unpaid tax bills to be settled, it was announced at the 2024 Autumn Budget that this would change to the base rate plus 4% from 6 April 2025. The government says the rate of late payment interest encourages prompt payment and ensures fairness for those who pay their tax on time.
From 6 April 2025 the following rates apply:
- Late corporation tax paid quarterly - 7%
- Late payment interest on other taxes - 8.5%
There is no corresponding change to the way repayment interest rates are calculated, i.e. the base rate minus 1%, with a lower limit of 0.5%.
Related Topics
-
Timetable for agent multi-factor authentication rollout published
HMRC has published further details of its plans to introduce multi-factor authentication (MFA) for tax agents. The rollout is intended to strengthen security across HMRC's online services and will be introduced in stages over the coming months. What do you need to know?
-
Using the EIS to unwind capital gains tax
You inherited shares from your father last year and sold them several months later making a tidy capital gain. You’ve read that the enterprise investment scheme (EIS) can defer the resulting tax bill, but how might it reduce it?
-
Electronic VAT return and payment due



This website uses both its own and third-party cookies to analyze our services and navigation on our website in order to improve its contents (analytical purposes: measure visits and sources of web traffic). The legal basis is the consent of the user, except in the case of basic cookies, which are essential to navigate this website.