If you’ve got a side hustle, or multiple income streams, HMRC is paying more attention than ever.
Over the past year, there has been a clear shift. More data sharing, more visibility, and more focus on undeclared income from platforms, freelance work and digital activity.
If you are earning extra income alongside your main business or employment, understanding the UK side hustle tax rules in 2026 is essential.
What counts as a side hustle in the UK?
A side hustle is any income you earn outside of your main job or business.
This can include:
– Freelance work or consulting
– Selling products on platforms like Etsy, eBay or Amazon
– Content creation or digital income
– Property income (e.g. Airbnb)
– Crypto trading or investments
Do you need to declare side hustle income to HMRC?
In most cases, yes.
The key threshold is the £1,000 trading allowance.
You can earn up to £1,000 per tax year from trading or miscellaneous income without needing to declare it.
Once you exceed this:
– You must register for Self Assessment
– You must report your income to HMRC
– You may need to pay Income Tax and National Insurance
Why is HMRC increasing focus in 2026?
HMRC has increased access to data from:
– Online platforms (eBay, Etsy, Airbnb)
– Payment processors
– Financial institutions
This means undeclared income is more visible than ever.
Common mistakes
– Assuming small amounts don’t matter
– Poor record keeping
– Mixing personal and business finances
– Ignoring crypto income
What should you do now?
– Check your income against the £1,000 threshold
– Keep clear records of income and expenses
– Separate personal and business finances
– Don’t leave it until January
Need Help?
If you’re unsure whether your income needs to be declared, get in touch:
https://brisan.co.uk/contact/
