We use some essential cookies to make this website work.
We’d like to set additional cookies to understand how you use GOV.UK, remember your settings and improve government services.
We also use cookies set by other sites to help us deliver content from their services.
You have accepted additional cookies. You can change your cookie settings at any time.
You have rejected additional cookies. You can change your cookie settings at any time.
Departments, agencies and public bodies
News stories, speeches, letters and notices
Detailed guidance, regulations and rules
Reports, analysis and official statistics
Consultations and strategy
Data, Freedom of Information releases and corporate reports
How to work out your adjusted net income and the circumstances when it can affect your tax liability.
Claim Income Tax relief on your job expenses by post using form P87.
Use this tool to find out what the numbers and letters in your tax code mean and how much tax you will pay.
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.
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.
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.
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.
Find out what software you will need to report self-employment and property income to HMRC.
How to set up a new Council Tax account on a property you have recently moved into.
Check if you get an exemption from Making Tax Digital for Income Tax and how it applies.
Register your trust online if you’re a trustee.
Find recognised commercial software suppliers and software you can use to file your Company Tax Return and any supplementary pages online.
Get help with Self Assessment by using online tools and guidance, and watching HMRC YouTube videos.
Find out how to get a certificate of residence as an individual, company or organisation so you do not get taxed twice on foreign income.
Find out how to file your accounts and Company Tax Return if you previously used the HMRC online service that closed on 31 March 2026.
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).
Use form SA1 to register for Self Assessment for any reason other than self-employment.
Use form MATCF to apply for Marriage Allowance to transfer 10% of your Personal Allowance to your husband, wife or civil partner.
Check if you need to use Making Tax Digital for Income Tax to report your self-employment and property income.
Use the PAYE tax calculator to work out how much Income Tax an employee needs to pay, in a pay period that is in the current tax year.
Don’t include personal or financial information like your National Insurance number or credit card details.
To help us improve GOV.UK, we’d like to know more about your visit today. Please fill in this survey (opens in a new tab and requires JavaScript).