Self Assessment Tax Returns

Do you need to complete a Self Assessment tax return?

You'll need to complete a Self Assessment tax return for the 2025/26 tax year if any of the following apply to you:

• You were self-employed and your gross income exceeded £1,000 (the trading allowance)
• You received rental or property income exceeding £1,000
• You are a company director
• Your income exceeded £100,000 — at this level your personal allowance begins to taper
• You have capital gains above the annual exempt amount
• You have foreign income
• You have savings or investment income above the relevant allowances
• You or your partner received Child Benefit and either of you earned over £60,000 (High Income Child Benefit Charge)

If you're unsure whether you need to file, we're happy to advise — just get in touch.

Key deadlines

Missing a deadline results in an automatic £100 penalty from HMRC, with further charges for continued late filing. We manage all deadlines on your behalf and give you plenty of notice.

What we do for you

We gather all your relevant income and expense information, prepare your tax return, identify every allowance and relief you're entitled to, and submit directly to HMRC. Once filed, we produce a tax transmittal letter outlining all relevant payment deadlines and amounts due, with clear payment instructions — so you always know exactly what you owe and when.

Making Tax Digital for Self Assessment

From April 2026, self-employed individuals and landlords with qualifying income over £50,000 must submit quarterly updates to HMRC digitally under Making Tax Digital for Income Tax (MTD for ITSA). This threshold drops to £30,000 from April 2027. Rather than one annual return, you'll submit four quarterly updates plus a year-end declaration. We can help you prepare for this change and ensure you're fully compliant from day one.