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Frequently Asked Questions about Self Assessment

Self Assessment can be a daunting process, especially for those new to it. Here, we've compiled a list of frequently asked questions to help you navigate the process with ease.

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What is Self Assessment?
Self Assessment is a system that HM Revenue and Customs (HMRC) uses to collect Income Tax. While tax is typically deducted automatically from wages and pensions, individuals and businesses with other income sources, including COVID-19 grants and support payments, must report it in a tax return.
When should I fill in my Self Assessment tax return?
You should complete your Self Assessment tax return after the end of the tax year (5 April) it applies to.
How do I know if I need to send a Self Assessment tax return?
You must send a return if HMRC asks you to. If you have income outside of regular employment, such as from self-employment, rental income, or significant savings interest, you'll likely need to complete a Self Assessment.
What happens if I miss the deadline for sending my tax return?
If you miss the deadline, you may have to pay interest and a penalty. It's essential to file and pay on time to avoid these additional costs.
How do I register for Self Assessment?
If you need to complete a tax return and haven't sent one before, you must inform HMRC by 5 October. You can inform HMRC by registering for Self Assessment. There are different registration methods depending on whether you're self-employed, not self-employed, or registering a partner or partnership.
What records should I keep for Self Assessment?
You need to keep records, such as bank statements or receipts, to fill in your tax return correctly. These records will help ensure that you report accurate information to HMRC.
How is my tax calculated?
HMRC will calculate the tax you owe based on the information you report in your tax return. The amount of tax you pay will depend on your income band, and there's a different rate for Capital Gains Tax if applicable.
When is the deadline for paying my Self Assessment bill?
You must pay your Self Assessment bill by 31 January following the tax year.
Can I get help with filling in my return?
Yes, HMRC provides helpsheets and guides to assist taxpayers in filling in their returns. If you're unsure about any aspect, consider seeking advice from a tax professional.

If you have more specific questions or need further clarification on any topic, feel free to contact us or consult the official HMRC Self Assessment page.