This service covers the current tax year (6 April 2026 to 5 April 2026). Use the service to:
- check your tax code and Personal Allowance
- see if your tax code has changed
- tell HM Revenue and Customs (HMRC) about changes that affect your tax code
- update your employer or pension provider details
- see an estimate of how much tax you’ll pay over the whole tax year
- check and change the estimates of how much income you’ll get from your jobs, pensions or bank and building society savings interest
Before you start
When you cannot use this service
You cannot use this service if Self Assessment is the only way you pay Income Tax.
There are different ways to:
- estimate how much Income Tax you should pay this year without signing in
- check how much Income Tax you paid last year (6 April 2026 to 5 April 2026)
- estimate how much you should have paid in a previous year
Income Tax helpline
Contact details for HMRC Income Tax helpline for enquiries from individuals and employeesHM Revenue & CustomsPay As You EarnPO Box 1970LiverpoolL75 1WXPhone: 0300 2003 300 / Calling from outside the UK – +44 135 535 9022Text number: 0845 302 1408 (for deaf and hard of hearing users only)
Opening hours:
Monday to Friday 8.00 am to 8.00 pm
Saturday 8.00 am to 4.00 pm