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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.
Check if and when you need to register for an agent services account to interact with HMRC on behalf of your clients as a tax adviser.
How to claim a refund in the current tax year if you are not getting taxable benefits or a pension from your employer and you've not started a new job (P50).
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.
Find out the scale rate expenses for accommodation and subsistence paid to employees who travel outside of the UK.
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.
If you’ve received a serious ill-health pension lump sum or flexibly accessed all of your pension, claim a tax refund with form P53Z .
Check a list of recent phone contacts from HMRC to help you decide if a phone call you've received is a scam.
How to make a subject access request (SAR) to get information that HMRC holds about you.
Get a refund of your Construction Industry Scheme (CIS) deductions if you're a subcontractor and you've had more taken than you need to pay in tax.
A Debt Relief Order (DRO) is a solution to deal with personal debts you cannot pay. It helps you make a fresh start (with some restrictions).
Check how the government calculates and spends your Income Tax and National Insurance contributions within your Annual Tax Summary.
Use form NRL1 if you are an individual non-resident landlord who wants to apply to receive UK rental income with no UK tax deducted.
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.
Use form MATCF to apply for Marriage Allowance to transfer 10% of your Personal Allowance to your husband, wife or civil partner.
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.
Get help with Self Assessment by using online tools and guidance, and watching HMRC YouTube videos.
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.
Use this tool to help you find software that meets your needs for Making Tax Digital for Income Tax.
Find out how you can get your import VAT certificates (C79), if you have paid import VAT using a duty deferment account.
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