Terms and conditions
This service gives you an estimate based on the answers you give. It is not a tax return and does not tell HMRC anything.
Your actual tax may be different. You are responsible for the information in your tax return.
The service covers the tax years from 6 April 2023 to 5 April 2028 and uses the rates published on GOV.UK. Its Self Assessment estimate does not cover the returns of trusts, estates, partnerships or companies: separate tools work out some of these.
Forecasts and payment plan amounts
A forecast of this year’s tax uses your figures so far and last year’s. It will change as your income changes.
An amount to pay through a Budget Payment Plan is only a suggestion. You choose the amount when you set up your plan with HMRC. You must pay anything still owed by the deadline.
Your account
Keep your password safe and do not share your account. Organisations using the service through the API must only send information they are allowed to share, and must keep their API keys secret.