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Contact details, webchat and helplines for enquiries with HMRC on tax, Self Assessment, Child Benefit or tax credits (including Welsh language services).
When you may need to make a change to your Self Assessment tax return for SEISS payments, and how to do it.
Use supplementary pages SA103S to record self-employment income on your SA100 tax return if your annual business turnover was below the VAT threshold for the tax year.
Find out what the Self Assessment for Agents online service is for, what you can do in the service and how to do it.
Use Self Assessment software to help populate your Self Assessment tax return.
Find out how much you need to put aside for your Self Assessment tax bill if you're self-employed by using HM Revenue and Customs' (HMRC's) self-employed tax calculator.
Use supplementary pages SA103F to record self-employment income on your SA100 Tax Return if your annual turnover was above the VAT threshold for the tax year.
Use this form if you're an agent and you're unable to file a Self Assessment tax return online for your client.
Find helpsheets, forms and notes to help you fill in the self-employment and partnership pages of your Self Assessment tax return.
This self-assessment checklist helps academy trusts check they are managing resources effectively and identify any adjustments they need to make.
Check the availability and any issues affecting the Self Assessment online service.
Helpsheets, paper forms and notes to help you fill in the foreign pages of your Self Assessment tax return.
The Self Assessment deadline for the 2022 to 2023 tax year is 31 January 2024 but there are many benefits to filing earlier.
Customers urged to submit their tax returns for the 2022 to 2023 tax year by the 31 January 2024 deadline.
How to report your income and claim tax reliefs and any repayment due to you using the SA100 tax return.
You can claim tax relief on your Self Assessment return for contributions you make towards registered pension schemes.
Use the helpsheets, forms and guidance notes for your trusts and estates Self Assessment tax return.
This applies to customers who have to submit a Self Assessment tax return through a notice to file.
Use the helpsheets, forms and guidance notes for your employment Self Assessment tax return.
Use the helpsheets, forms and guidance for your residency and remittance basis Self Assessment tax return.
Don’t include personal or financial information like your National Insurance number or credit card details.
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