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Use form CA9176 to apply for Class 3 National Insurance credits from 6 April 2011, if you've provided care for a child aged under 12.
Use this form to report Capital Gains Tax on UK property or land, if you cannot use our online service.
Find the rates and allowances for Income Tax including the previous 3 tax years.
If Income Tax has been deducted from your savings and investments, get a refund using form R40.
Find out the rules for transferring the basic tax-free allowance (nil rate band) to a surviving spouse or civil partner.
Find out about paying National Insurance contributions to the UK and getting benefits when abroad.
Check what you need to do when taking lump sums so you know what's tax free.
Use this online tool to help you find the right guidance and support if you owe money to HMRC for tax or penalties.
Find out about the Rent a Room Scheme if you're a trader, owner occupier or tenant.
Find out about the foreign income and gains (FIG) regime which replaced the remittance basis on 6 April 2025.
Find out about the Statutory Residence Test (SRT) and how it may apply to your circumstances.
If you're an agent, use the online service to sign up your client for Making Tax Digital for Income Tax.
Find out which gifts count towards the value of the estate, how to value them and work out how much Inheritance Tax may be due.
Tax treaties and related documents between the UK and USA.
Find information on completing the Capital Gains section of your Self Assessment tax return.
Rates and allowances for travel including mileage and fuel allowances.
Use the Self Assessment helpsheet (HS325) to work out your other taxable income and include this in your tax return.
How to update your details online if you have started with a new employer and you think your tax code is wrong.
Check if a home is eligible for extra tax-free residence allowance if it is left to children, grandchildren or other direct descendants.
Find out how to report trading losses in your Self Assessment tax return.
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