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Why you should check simple assessments for accuracy

Roger Eddowes

CREATED BY ROGER EDDOWES

Published: 03/11/2025 @ 09:00AM

#checksimpleassessments #UKtax #HMRC #selfassessment #incometax #taxbill

Here's why you should check simple assessments and how to do it with confidence. Spot errors, fix them fast, and avoid overpaying. You'll know when to contact HMRC and what to do next ...

Check simple assessments, Measure your understanding, Path to progress is clear

Check simple assessments, Measure your understanding, Path to progress is clear

When a simple assessment lands, treat it as a starting point, not the final word, and remember to check simple assessments carefully so you don't pay more than you should. You're not alone if you've received one lately.

HMRC has been issuing many more due to frozen allowances, rising interest rates and state pension increases. A simple assessment is a way to collect income tax without putting you into self-assessment, often for state pension or bank and building society interest, but the numbers can be wrong.

What goes wrong is usually simple!

Old estimates roll forward, bank interest is incomplete, or allowances are misapplied. Interest can be taxed differently depending on your personal allowance, the personal savings allowance, and the starting rate for savings, so it pays to check simple assessments against your actual bank statements and DWP letters, using HMRC's guidance and calculator to sanity‑check the outcome.

Your best move is to compare every line with your records and confirm that any gift aid, pension contributions and benefits are current, not historic. If something doesn't add up, call or write to HMRC within 60 days and explain clearly what needs changing.

When you check simple assessments promptly, corrections are typically straightforward.

If you receive more than one letter for the same year, don't panic. The latter one usually shows the total tax payable, including amounts you may already have paid, so you should deduct earlier payments before settling the balance; it's another reason to check simple assessments line by line rather than paying twice.

Occasionally, letters go to people who are
already in self-assessment!

If that's you, ask HMRC to withdraw the simple assessment so you only report and pay once. Keep copies of everything so your position is crystal clear if queries arise. Timing matters for your tax bill. If your 2024/25 letter was issued by 31 October 2025, payment is due by 31 January 2026; letters issued after that give you three months to pay.

If cash flow is tight, you can apply online for a Time to Pay arrangement on a simple assessment, which can ease pressure without the anxiety of penalties. It's another good reason to check simple assessments early so you have options.

When you methodically check simple assessments, you turn a one‑way calculation into a fair, accurate outcome, and you only pay the income tax you truly owe.

Ultimately, a careful check protects your wallet and your peace of mind.

Until next time ...


ROGER EDDOWES
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#checksimpleassessments #UKtax #HMRC #selfassessment #incometax #taxbill

About Roger Eddowes ...

Roger Eddowes 

Roger trained at Edward Thomas Peirson & Sons in Market Harborough before working at Hartwell & Co, followed by Chancery, as a partner. He started Essendon Accounts and Tax with Helen Beaumont in 2014 as a general practitioner with a hands-on approach.

Roger loves getting his hands dirty, working with emerging, small-to-medium and family businesses to ensure they receive the best possible accountancy advice. Roger utilises an extensive network of business contacts to leverage the best guidance and practical solutions.

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