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Find and use tools and calculators that will help you work out your tax.
Use form CA5403 to request a copy of your National Insurance number by post.
How to set up a new Council Tax account on a property you have recently moved into.
Find out how to register your client for Self Assessment, Corporation Tax, PAYE, VAT or their trust or estate.
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 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.
Check a list of recent letters from HMRC to help you decide if a letter you’ve received is a scam.
How to identify and report outsourced labour payroll fraud (sometimes called ‘payslip fraud’) if you’re a worker, employer or agency.
How to check if you’ve paid the right amount of tax, if your pay is not what you expected.
What you need to do if you've submitted a declaration using the Customs Declaration Service and need to send supporting documents or respond to HMRC queries.
Use these rates and thresholds when you operate your payroll or provide expenses and benefits to your employees.
Claim Income Tax relief on your job expenses by post using form P87.
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).
Find out what software you will need to report self-employment and property income to HMRC.
If HMRC has sent you a letter about too much National Insurance being paid, you can apply for a refund.
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 our online service to apply to pay voluntary National Insurance contributions for periods abroad.
Check how the government calculates and spends your Income Tax and National Insurance contributions within your Annual Tax Summary.
If you account for your import VAT on your VAT Return, you’ll have to access the Customs Declaration Service to get a postponed import VAT statement online.
Find out the scale rate expenses for accommodation and subsistence paid to employees who travel outside of the UK.
Do not include personal or financial information like your National Insurance number or credit card details.
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