Earning Extra Income? You Might Need to File a Tax Return – Here’s What to Know
If you earn extra income from a side hustle, you could be legally required to register for Self Assessment and complete a tax return - and it’s better to get ahead of it now, rather than wait until the January deadline.
The threshold is simple: if you earn more than £1,000 in a tax year from any additional income, you may need to file. This applies whether you’re selling online, renting out property, freelancing, creating content, dog walking, tutoring, or even trading cryptoassets.
Why Act Now?
Filing early means you:
- Avoid the stress of the January rush
- Know what you owe sooner, so you can budget or set up a payment plan
- Get peace of mind by knowing your tax affairs are in order
You don’t need to pay immediately - the deadline for payment is still 31 January 2026 for the 2024-25 tax year - but getting your return done early gives you options and avoids surprises.
Many people running side hustles or earning income outside of employment simply don’t realise that tax rules apply - until it’s too late. If you’re unsure whether you need to file, or want help staying compliant, get in touch with us. We’ll guide you through what’s required and make it as straightforward as possible.
UK businesses are facing a “cost of business crisis”, according to the British Chambers of Commerce (BCC). Its new cost-stack calculator shows government policy alone has pushed up an average firm's expenses by 70% over the past decade, adding roughly £827,000 a year in costs for a typical mid-sized business. About a quarter of the rise stems from the increase in employer National Insurance contributions, with the higher minimum wage and mandatory pension auto-enrolment also major contributors.
Under Making Tax Digital (MTD) for Income Tax, sole traders and landlords with income of more than £50,000 have been required to keep digital records and send quarterly updates to HMRC since 6 April 2026.