Estimate your Income Tax for a Previous Year

Estimate your Income Tax for a Previous Tax Year 

Use this service to estimate how much Income Tax you should have paid for a previous tax year.  
There are different ways to: 
If you are self-employed, use the HMRC self-employed ready reckoner to budget for your tax bill. 
You may be able to claim a refund if you have paid too much. 

Before you Start 

You need to be: 
You need details of: 
  • your earnings, before and after tax - get this from your P60 
  • any savings - get this from your bank statements or annual statement from your bank or building society 
  • any Gift Aid donations you have made to charity 

Who Cannot get an Estimate Online 

You cannot get an estimate online if you: 
You can check you have paid the right tax by contacting HMRC or by getting help from an accountant
Further information can be found on Check your Income Ta on GOV.UK's website.