The short version: Self Assessment is how you report untaxed income to HMRC and pay the tax you owe. If you’re self employed, a landlord, or have other income that isn’t taxed at source, you’ll probably need to file one.
Who needs to file?
Self employed people earning above the trading allowance, landlords with rental income, people with capital gains to report, higher earners, those claiming certain tax reliefs, and company directors receiving dividends.
When’s the deadline?
31st January following the end of the tax year. For the 2024/25 tax year (ending 5th April 2025), the deadline is 31st January 2026. Miss it and penalties start immediately.
Can you do it yourself?
Yes, through HMRC’s online service. But if your affairs are complicated, or you want to make sure you’re claiming everything you can, getting help is worth it.
Tax return due? Let us take the stress out of it.
