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Payments on account (POA) are advance payments of self-assessment income tax. Some self-assessment taxpayers will be required to make these payments twice a year - in January and July. For more information on what income tax payments on account are, take a look here. Keep reading to find out if you need to pay this, when and how.

What to do if my tax return is complete?

If you have already filed your 2024/25 self-assessment tax return, and you were required to make payments on account last year, the first payment on account that you made in January 2025 covers some or all of your tax liability for 2024/25. If the payment made in January covers your entire tax liability for 2024/25 then you may not need to make the second payment on account. 

If the payment in January did not cover your 2024/25 liability, a further payment must be made by 31st July 2025. 

What to do if my tax return is not complete?

If you have not yet filed your 2024/25 self-assessment tax return and believe your profits and tax are in line with last year, then yes you do still have to make the second payment on account by the due date. 

If you believe your income has reduced from last year and your second payment on account is too high, you can ask HMRC to reduce your payments on account. Caution should be taken in reducing payments on account, as if it turns out they were due, then HMRC will apply interest from the date the payment on account should have been made. 

How do I pay my second payment on account?

There are many ways to pay your tax bill. You can pay using your online HMRC account or the HMRC app. You can also make a bank payment or use online or telephone banking. Check out ways to pay here. When making any payment to HMRC it is important use your Unique Tax Reference (UTR) as a reference.

If you are unable to pay your payment on account, speak to your accountant or directly to HMRC as soon as possible to discuss a plan.

How TaxAssist can help

If you would like to discuss ayments on account or your tax affairs further, please contact us on 0203 988 0580 or use our simple online contact form to arrange a free initial consultation.

Last updated 9 Jul 2025 | First published 21 Jul 2021

This article is intended to inform rather than advise and is based on legislation and practice at the time. Taxpayer’s circumstances do vary and if you feel that the information provided is beneficial it is important that you contact us before implementation. If you take, or do not take action as a result of reading this article, before receiving our written endorsement, we will accept no responsibility for any financial loss incurred.

Catherine Heinen, FCCA

Catherine is a qualified accountant and technical content writer with experience working at mutliple accountancy practices in the UK top 50 accountancy firms according to Accountancy Age. Catherine has significant experience in accounts, tax returns and advising clients. Catherine ensures businesses, business owners and individuals are kept up to date and informed by providing concise and informative technical material.

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