Understand your Self Assessment tax bill
Tax calculation (SA302)
Your tax calculation (SA302) shows:
- your total income on which tax is due
- any allowances and relief you have
- the total amount you owe for the tax year
- how HM Revenue and Customs (HMRC) has worked out the amount you owe
It does not include any:
- payments on account (payments towards your next bill) you have made
- payments you have made into a Budget Payment Plan
- other outstanding amounts (such as unpaid tax or penalties)
When you’ll get your tax calculation
You’ll get a calculation when you’ve filed your Self Assessment tax return or if the amount you owe changes. If you filed online, you can view this in your online account before you submit your return.
You cannot view your calculation for up to 72 hours after you submit your return. If your payment is due in this time, you will need to save a copy of this before you submit.
If you filed a paper return, HMRC will send your calculation by post.
How to work out how much tax you need to pay
HMRC will send you a Self Assessment statement telling you how much you need to pay.
If you submit your tax return late or close to the deadline
Your statement may not arrive before your payment is due. If you do not have a statement, you’ll need to check your online account and view your current balance to work out how much tax you owe.
Get a copy of your tax calculation
Find out how to get a copy of your tax calculation SA302, for example if you’re applying for a mortgage or if you need one on HMRC header paper.