Self-Assessment Tax Return (Sa100)

Simplify Your Self-Assessment Tax Return Procrss


Filing your self-assessment tax return can be complex and overwhelming, but with Affotax, we make the process simple and stress-free. Whether you’re self-employed, a UK company director, or have untaxed income, we are here to assist you in managing your SA100 tax return.



What is a UK Self-Assessment Tax Return?


A self-assessment tax return, also known as the SA100 form, is the official method for reporting untaxed income to HMRC. If your income isn't taxed at source, you'll need to complete a self-assessment tax return. This includes earnings from self-employment, rental properties, dividends, savings, and capital gains.

For those who are self-employed, company directors, or earn income from multiple sources, filing a self-assessment tax return ensures that HMRC is aware of all your earnings so they can assess the appropriate tax you need to pay.


Who Needs to File an SA100 Tax Return?


Certain individuals are legally required to submit a self-assessment tax return. You’ll need to complete and submit this form if you:

  • Are self-employed or a freelancer
  • Are a company director
  • Earn over £100,000 annually
  • Have untaxed income, such as rental income, interest, or savings
  • Have received dividends or capital gains
  • Have paid capital gains tax or the High-Income Child Benefit Charge
  • Are claiming certain tax reliefs, such as for pension contributions or charitable donations

If any of the above applies to you, completing your self-assessment tax return will help ensure you comply with UK tax regulations and avoid penalties.


How Affotax Can Help with Your Self Assessment Tax Return?


Navigating through the process of completing and filing your self-assessment tax return can be confusing. At Affotax, we provide expert assistance to ensure your SA100 form is filed accurately and on time. Our comprehensive services include:

  1. Tax Planning and Advice: We’ll help you identify all the income sources that need to be reported, ensuring you don’t miss out on any deductions or tax reliefs you may be entitled to.
  2. Accurate Income Reporting: We’ll guide you through the process of accurately reporting your income, whether from self-employment, rental properties, savings, or other untaxed income.
  3. Tax Calculation: We assist with calculating your tax liabilities and provide advice on how to reduce your tax burden legally.
  4. Claiming Tax Reliefs: Our experts ensure you claim all eligible tax reliefs, such as for pension contributions, charitable donations, and more.
  5. SA100 Form Submission: Once your details are gathered, we ensure your SA100 form is correctly submitted to HMRC.

Our goal is to make your self-assessment tax return as straightforward as possible so you can focus on what matters most to you.


What You Need to Know About the SA100 Tax Return Form


The SA100 form is the main document used to file a self-assessment tax return. This form includes sections for:

  • Personal details: Name, address, and Unique Taxpayer Reference (UTR).
  • Income: Details of earnings from employment, self-employment, rental income, savings, dividends, etc.
  • Deductions: Information on allowable expenses, pension contributions, and charitable donations.
  • Tax Calculation: The form will calculate the tax you owe based on the information provided.
  • Capital Gains Tax: If applicable, you must also report any gains from the sale of assets, such as property or shares.


Get Started Today


Let Affotax take the stress out of filing your self-assessment tax return. Our team will ensure that your SA100 form is completed and submitted accurately, on time, and with all the necessary information. We make sure everything is in order, so you don’t have to worry about anything.


Contact Affotax now for expert support with your self-assessment tax return. We’ll help you navigate the process efficiently, so you can focus on your personal and professional goals without the worry of tax compliance.

Why You Should File Your Self-Assessment Tax Return

  • Expert Assistance

    Our team has extensive experience handling self-assessment tax returns for a wide range of clients, from freelancers to business owners.

  • Avoid Penalties

    Filing late or incorrectly can lead to hefty fines. We ensure your return is filed on time and with all the necessary details.

  • Tailored Support

    Whether you need help with a complex tax situation or are just filing for the first time, we offer personalized guidance to make the process as smooth as possible.

  • Maximized Deductions

    We help you identify eligible tax reliefs and deductions, so you don’t pay more than you need to.

  • Transparent Pricing

    No hidden fees—just clear and competitive pricing for our services.

Why You Should File Your Self-Assessment Tax Return

  • Expert Assistance

    Our team has extensive experience handling self-assessment tax returns for a wide range of clients, from freelancers to business owners.

  • Avoid Penalties

    Filing late or incorrectly can lead to hefty fines. We ensure your return is filed on time and with all the necessary details.

  • Tailored Support

    Whether you need help with a complex tax situation or are just filing for the first time, we offer personalized guidance to make the process as smooth as possible.

  • Maximized Deductions

    We help you identify eligible tax reliefs and deductions, so you don’t pay more than you need to.

  • Transparent Pricing

    No hidden fees—just clear and competitive pricing for our services.

Simplify your Tax Filing with Affotax — Let's Talk Today!

Have questions or need personalized support? Our team is here to help you every step of the way—don't hesitate to reach out!

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Frequently Asked Questions

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