Income Tax: introduction

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Check you're paying the right amount

You can see if you’re paying the right amount of Income Tax online. For the current tax year (6 April 2026 to 5 April 2027), you can:

• check your Income Tax payments
• work out how much Income Tax you should be paying

You can also:

• check how much Income Tax you paid last year (6 April 2025 to 5 April 2026)
• estimate how much Income Tax you should have paid in a previous year

If you cannot use these services, you can check you’ve paid the right tax by contacting HMRC or by getting help from an accountant.

There’s a different way to change a Self Assessment tax return.

View a printable version of the whole guide