The side hustles that work in the UK are the ones that use a skill, time or space you already have: tutoring, pet sitting, reselling, making and selling things, freelancing, delivery and renting a spare room. Up to £1,000 a year of side-hustle income is tax-free under the trading allowance; above that you register for Self Assessment, and online platforms now report sellers’ income to HMRC. This guide compares realistic options and walks through the tax step by step.
At a glance
- £1,000 trading allowance: gross side-hustle income up to £1,000 a year is tax-free and normally needs no tax return.
- Above £1,000: register for Self Assessment by 5 October after the tax year ends.
- Platforms report sellers with 30+ sales or about £1,700 a year to HMRC.
- Renting a furnished room in your home: up to £7,500 a year tax-free under Rent a Room.
- Any upfront fee to “join” a side hustle is a red flag.
Which side hustles actually work in the UK?
A side hustle pays when people already spend money on it and you can start without a big outlay. These are the options that meet both tests:
| Side hustle | Start-up cost | Time to first income | Earning potential | Watch out for |
|---|---|---|---|---|
| Tutoring (school subjects, music, languages) | Low | Days to weeks | Good per hour | DBS checks for platforms and schools |
| Pet sitting and dog walking | Low | Days | Steady locally | Insurance; council licence for home boarding |
| Reselling (clothes, books, furniture) | Low to medium | Days | Varies with effort | Buying and selling for profit counts as trading |
| Making and selling crafts | Medium | Weeks | Low to medium | Time per item; product safety rules |
| Freelancing (writing, design, admin, bookkeeping) | Low | Weeks | Good once you have clients | Check your employment contract |
| Food or parcel delivery | Medium (vehicle) | Days to weeks | Hourly, variable | Business-use insurance; fuel and wear |
| Renting a spare room | Low | Weeks | Highest of these | Mortgage lender or landlord permission |
Which side hustle fits your time and skills?
| If you have… | Start with |
|---|---|
| A few free evenings and good grades in a subject | Tutoring – the best pay per hour for the least set-up |
| Weekends and you like being outdoors | Dog walking and pet sitting |
| A spare room in your own home | Renting the room – often more than all other options combined |
| A professional skill from your day job | Freelancing for small businesses |
| A car and flexible hours | Delivery apps – but count fuel, insurance and wear |
| Little time but clutter at home | Selling unwanted items – usually not trading at all |
If you would rather have a guaranteed hourly rate than build a small business, a part-time contract is often the better choice – see part-time and evening work from home.
How much side-hustle income is tax-free?
The trading allowance lets you earn up to £1,000 a year from self-employment and casual work without paying tax on it or telling HMRC, as long as you have no other reason to file a return. The £1,000 applies to your gross income, not profit, and it is one allowance for all your side hustles together (GOV.UK – trading and property allowances).
| Situation (2026/27) | Tax-free amount | What you do |
|---|---|---|
| Side-hustle income up to £1,000 | All of it (trading allowance) | Nothing, unless you already file a return |
| Side-hustle income over £1,000 | Choose: deduct £1,000 or your actual expenses | Register for Self Assessment and file a return |
| Renting a furnished room in your main home | Up to £7,500 (Rent a Room scheme) | Above that, declare it on a return |
| Selling your own used belongings | Usually not taxable – it is not trading | Nothing in most cases |
When your income is above £1,000, you can either deduct the £1,000 allowance or your real expenses – whichever is better for you, not both. Profit is then added to your other income: if your job already uses your £12,570 personal allowance, the profit is taxed at your normal rate and Class 4 National Insurance may apply.
Planned change: the government has announced plans to raise the Self Assessment reporting threshold for trading income to £3,000 by 2029. It does not change the £1,000 tax-free allowance, and it is not in force yet.
When do you need to register with HMRC?
- Add up your gross side-hustle incomeCount everything from 6 April to 5 April across all side hustles, before expenses.
- Over £1,000? Register for Self AssessmentDo it by 5 October after the end of the tax year – for income in 2026/27, by 5 October 2027 (GOV.UK – register for Self Assessment).
- Keep simple recordsIncome, receipts for costs, mileage. A spreadsheet is enough for most side hustles.
- File and pay by 31 JanuaryThe online return and any tax for 2026/27 are due by 31 January 2028.
Making Tax Digital for Income Tax, which requires quarterly digital updates, started in April 2026 for sole traders and landlords with qualifying income over £50,000. Most side hustles are well below that.
Do platforms report your side-hustle income to HMRC?
Yes. Since 2024, online marketplaces and service platforms must send HMRC details of sellers who make 30 or more sales or receive about £1,700 (€2,000) or more in a calendar year, and give you a copy. The rules do not create a new tax – they make it easier for HMRC to see income that should already be declared. If you only sell your own unwanted items, being reported does not by itself mean you owe tax, but keep a note of what you sold and roughly what you paid.
What should you check before starting?
- Your employment contract: some forbid competing work or need your employer’s permission for second jobs.
- Insurance: delivery needs business-use cover; pet care and tutoring benefit from public liability insurance.
- Permissions: renting a room needs your mortgage lender’s or landlord’s agreement; home dog boarding needs a council licence.
- Benefits: side-hustle income must be reported if you claim Universal Credit and can reduce your payment.
- Self-employment basics: GOV.UK’s working for yourself guide covers registering and records.
Not tax advice: this guide explains the general rules for 2026/27. For your own situation, check GOV.UK or ask a qualified accountant or a free service such as TaxAid or Tax Help for Older People.
Which side hustles should you avoid?
Usually fine
- Skills you sell directly to people you can meet
- Platforms that take a commission from what you earn
- Mystery shopping companies that never charge you
Avoid
- Anything with a joining fee, starter kit or “training package”
- Recruiting others as the main way to earn
- Paid tasks that need a deposit to unlock or withdraw
- Receiving and passing on money or parcels
Envelope stuffing, home assembly with “buy-back” and parcel forwarding are explained in our guide to packing jobs from home.
Deeper guides to single questions on this route:
- Side hustle tax in the UK: allowance, Self Assessment and National Insurance
- Side hustles that pay daily or weekly in the UK
Questions about side hustles in the UK
Do I have to pay tax on a side hustle?
Not if your total side-hustle income is £1,000 or less in a tax year – the trading allowance covers it. Above £1,000 you register for Self Assessment and pay tax on your profit.
Do I need to tell HMRC about selling things online?
Not for selling your own unwanted belongings in most cases. If you buy to resell or make things to sell, that is trading, and the £1,000 trading allowance and Self Assessment rules apply.
What are the best side hustles in the UK for beginners?
Tutoring, pet sitting and dog walking, reselling and freelancing a skill you already use at work need the least money to start and can earn within weeks.
Are there side hustles that pay daily?
Some delivery and gig apps offer fast or instant pay-outs for a fee, and cash-paid local jobs pay on the day. Be wary of “daily pay” offers that need a deposit first – they are a common scam.
Can I have a side hustle while employed?
Usually yes, but check your contract for clauses on second jobs and competing work, and keep the side hustle out of your employer’s working time and equipment.
Is renting out a room a side hustle?
It can be the most profitable one: up to £7,500 a year from a furnished room in your main home is tax-free under the Rent a Room scheme.
