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What is self assessment for individuals in the UK?
What is self assessment for individuals in the UK?

We explain the basics of what a UK self assessment/personal tax return is, key components and common deductions.

Steven Anderson avatar
Written by Steven Anderson
Updated over a week ago

Introduction

In the United Kingdom, self-assessment is a system used by individuals to report their income, gains, and tax liabilities to Her Majesty's Revenue and Customs (HMRC). This annual process ensures that taxpayers pay the correct amount of income tax and National Insurance contributions. In this article, we will delve into the details of what a self-assessment is, why it is necessary, how to complete it, and some key deadlines to keep in mind.
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See our other articles on self assessment as well:

What is Self-Assessment?

Self-assessment is a method by which individuals in the UK report their financial affairs to the HMRC. This includes income from various sources, such as employment, self-employment, rental income, investments, and capital gains. It allows taxpayers to calculate their tax liability and make payments accordingly. The self-assessment system is primarily used by self-employed individuals, company directors, landlords, and those with more complex financial situations.
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For Ember clients, sole traders will need to report their profits from self employment whilst Limited company directors will need to report any salary or dividends received.

Why is Self-Assessment Necessary?

The self-assessment system is designed to ensure that taxpayers accurately report their income and pay the appropriate amount of tax. It helps HMRC collect the revenue needed to fund public services, infrastructure, and government programs. By requiring individuals to assess their own tax liability, the system promotes transparency and accountability in the tax collection process.

Key Components of Self-Assessment

  1. Personal Tax Account: To file a self-assessment, individuals need to set up a Personal Tax Account on the HMRC website. This account serves as the portal through which taxpayers submit their information, view their tax status, and make payments.

  2. Tax Return: The tax return is the core document of self-assessment. It provides a comprehensive overview of an individual's financial situation, including income, expenses, and deductions. HMRC provides an online form that taxpayers can complete and submit.

  3. Deadlines: It's crucial to adhere to specific deadlines when it comes to self-assessment. The tax year in the UK runs from April 6th to April 5th of the following year. Taxpayers must file their self-assessment tax return and pay any tax owed by the following deadlines:

    • Online filing deadline: Midnight on January 31st.

    • Paper filing deadline: Midnight on October 31st (if you choose to file a paper return).

    • Payment deadline: Midnight on January 31st.

  4. Payment: When completing a self-assessment, individuals must calculate the tax they owe and make payment to HMRC by the specified deadline. Payment can be made online, via bank transfer, or by check.

  5. Records and Documentation: Taxpayers are required to maintain accurate records of their financial transactions, including invoices, receipts, and bank statements. These records serve as evidence to support the information provided in the tax return.

Common Deductions and Allowances

When completing a self-assessment tax return, individuals can claim various deductions and allowances to reduce their tax liability. Some common deductions and allowances include:

  • Personal Allowance: The amount of income you can earn tax-free.

  • Marriage Allowance: A transferable allowance between spouses or civil partners.

  • Expenses: Business-related expenses and allowable deductions.

  • Tax-Relief Schemes: Schemes like the Enterprise Investment Scheme (EIS) and Seed Enterprise Investment Scheme (SEIS) can provide tax relief on investments.

Conclusion

Self-assessment is a vital process for individuals in the UK to report their income and tax liability accurately. By adhering to the deadlines and following the guidelines provided by HMRC, taxpayers can ensure they fulfill their financial obligations while minimizing the risk of penalties or fines. It is advisable to seek professional advice or utilize HMRC's online resources if you have complex financial circumstances to ensure that your self-assessment is completed correctly. Remember that being proactive and organized in your financial affairs can help you navigate the self-assessment process smoothly and avoid any potential issues with HMRC.

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