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If you're a sole trader or landlord, use the online service to sign up for Making Tax Digital for Income Tax.
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).
Find out about annual tax-free allowances for property or trading income and if you qualify.
Use these rates and allowances for Capital Gains Tax to work out your overall gains above your tax-free allowance, known as the annual exempt amount.
Use this calculator to work out employee National Insurance contributions for the current tax year, if you're an employee, employer, or a software developer.
Find out about tax as a landlord, and how to work out your rental income if you rent out property.
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 form CA5403 to request a copy of your National Insurance number by post.
If you’re eligible, you can claim Income Tax relief on your job expenses by post using form P87.
How to claim back tax that HMRC owes you on a small pension lump sum that you've received in the current tax year (P53).
Use these rates and thresholds when you operate your payroll or provide expenses and benefits to your employees.
Find out how tax on dividend income and interest from savings is worked out by HMRC.
Find software suppliers for tax returns, supplementary pages and attachments.
Use this calculator to work out the adjustment for your Self Assessment tax return for disposals of assets on or after 30 October 2024 where the rates changed.
Apply for a refund of the higher rates of Stamp Duty Land Tax (SDLT16) for additional properties if you sell what was previously your main home.
See how to work out the tax relief for individual landlords and assess the impact of the finance cost restriction from 6 April 2017.
Apply online for a PDU1 certificate for unemployment benefit if you live or will be living abroad, or for a paper statement of your National Insurance contributions.
Use form MATCF to apply for Marriage Allowance to transfer 10% of your Personal Allowance to your husband, wife or civil partner.
How to pay taxes, penalties and enquiry settlements to HMRC if you cannot find instructions in other 'paying HMRC' guides, or if your payment reference starts with X.
Check if you get an exemption from Making Tax Digital for Income Tax and how it applies.
Don’t include personal or financial information like your National Insurance number or credit card details.
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