Before the deadline

Do I need to
file a return?

A straight yes or no, plus an estimate of what you might owe or be owed. No HMRC jargon.

Start here — the calculator is free ▾

✓ Free, no signup✓ Nothing stored✓ 2025/26 rates

90sec

To your answer

31 Jan

Filing deadline

£0

To use

Simple steps

1Do you need to file?

2Your Income

3Deductions

4Tax Estimate

5Next Steps

Do you need to file a Self Assessment?

Tick everything that applies to your 2024/25 tax year (6 April 2024 to 5 April 2025). We’ll tell you straight away.

Your income

Start with what you earned through PAYE. Add other income sources if they apply to you.

Gross salary (2024/25)

Total gross pay before tax and NI. From your P60.

Tax already paid via PAYE

The "income tax" figure on your P60.

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I have other income to declare (self-employment, rental, dividends, etc.)

Deductions or reliefs to claim?

Most people don’t have any of these. Toggle on only if one applies to you.

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Personal pension contributions

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Gift Aid donations

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Marriage Allowance transfer

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Student loan repayments

Your tax estimate

Based on what you’ve entered. Illustrative only.

Calculating…

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Enter your figures on the previous steps to see your estimate.

📄 Download PDF report £4.99

📧 Get a summary emailed to you (free)

We’ll send a one-time summary. No spam, no mailing list. You can also just screenshot your results.

✓ Check your inbox! A summary is on its way.

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See the full tax breakdown

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📄 Download your Self Assessment summary A full breakdown to take to your accountant or keep on file.

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What to do next

The deadline, what you need, and where to file.

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What to gather before you file

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Want help with your return? A tax adviser or accountant can file on your behalf and make sure you don’t pay more than you need to.

Get advice →