Self Assessment Tax Return

Self-Assessment Tax Returns: Done Right, On Time

If HMRC has asked you to file a Self-Assessment tax return, you are legally responsible for submitting it accurately and by the deadline. Miss the deadline or make errors, and you face automatic penalties and interest.

At Accountancy and Tax Crew, we take the stress out of Self-Assessment. Whether you are an employee with extra income, a landlord, a freelancer, or an investor, we prepare and file your return accurately, on time, and with your tax bill minimised wherever possible.

Who Needs to File a Self-Assessment Tax Return?

You must file a return if:

You are self-employed (including gig economy workers like Uber Eats, Deliveroo, Just Eat)

You have rental income from property

You have untaxed income (e.g., savings interest, dividends, foreign income)

You have Capital Gains Tax to report (e.g., sold shares, crypto, or a second home)

HMRC has specifically asked you to file

Key Deadlines

Date       What Is Due

31 January          Online return deadline and payment of any tax owed

Warning: Late filing penalties start at £100 – even if you have no tax to pay or are due a refund.

How We Help

We handle everything:

Gather your information (income, expenses, investments, foreign income, etc.)

Identify allowable expenses to lower your taxable profit

Claim all reliefs (personal allowance, marriage allowance, pension relief, etc.)

Calculate your tax liability accurately

File your return with HMRC before the deadline

Advise on payment dates and options

Our Detailed Self-Assessment Sub-Pages

SELF-ASSESSMENT TAX RETURNS FOR LANDLORDS: Self Assessment Tax Return