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Find out when you can expect to receive a reply from HMRC to a query or request you've made.
How to report your income and claim tax reliefs and any repayment due to you using the SA100 tax return, for 6 April 2025 to 5 April 2026.
Use this service to claim tax relief on your personal pension and workplace pension scheme or change an existing claim.
Use the online service to update details of your trust, declare no changes, authorise an agent, get proof of registration or close a trust on the trust register.
Find out how to appeal an individual or partnership Self Assessment penalty.
Tell HMRC if you've left or intend to leave the UK and find out how to get relief or a repayment on UK Income Tax (P85).
How to register a trust on the Trust Registration Service.
Use this list to check if you can claim a fixed amount of tax relief (also known as 'flat rate expenses') for your work expenses if you're an employee.
Use this form if you are a sole trader, company or organisation to get a certificate of residence or letter of confirmation so you do not pay tax twice on foreign income.
Use form SA1 to register for Self Assessment for any reason other than self-employment.
If you're a sole trader or landlord, use the online service to sign up for Making Tax Digital for Income Tax.
Use this form to apply to pay voluntary Class 3 National Insurance contributions if you've received a letter from HMRC.
How to work out your adjusted net income and the circumstances when it can affect your tax liability.
How to claim a refund in the current tax year on an overpayment of tax when you've flexibly accessed part of your pension pot.
Find and use tools and calculators that will help you work out your tax.
Use the online service or postal form CF411 to apply for National Insurance Home Responsibilities Protection, or to transfer it from a spouse or partner.
Use form CA5403 to request a copy of your National Insurance number by post.
Claim Income Tax relief on your job expenses by post using form P87.
Use our online service to apply to pay voluntary National Insurance contributions for periods abroad.
Use this tool to find out what the numbers and letters in your tax code mean and how much tax you will pay.
Do not include personal or financial information like your National Insurance number or credit card details.
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