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Find out when you can expect to receive a reply from HMRC to a query or request you've made.
Find and use tools and calculators that will help you work out your tax.
Use these rates and thresholds when you operate your payroll or provide expenses and benefits to your employees.
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).
Find out what you must show on P11D and P11D(b) to declare your company's expenses, benefits and Class 1A National Insurance contributions.
Find out how to appeal an individual or partnership Self Assessment penalty. For example, either online or by post using forms SA370 or SA371.
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.
Pay voluntary National Insurance for periods abroad.
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.
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).
How to work out your adjusted net income and the circumstances when it can affect your tax liability.
Use form CA5403 to request a copy of your National Insurance number by post.
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.
Register your trust online if you’re a trustee.
Use the online form service or postal form CF411 to apply for National Insurance Home Responsibilities Protection.
Use form SA1 to register for Self Assessment for any reason other than self-employment.
Check how the government calculates and spends your Income Tax and National Insurance contributions within your Annual Tax Summary.
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.
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.
Find out about tax as a landlord, and how to work out your rental income if you rent out property.
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