Business vs Hobby: How HMRC Tells the Difference

Why It Matters

If your activity is a business, your profits are taxable and you must register for Self Assessment. But you can also deduct business expenses, reducing your tax bill.

If it is a hobby, the income is not subject to income tax (up to certain limits) — but you cannot deduct expenses against it either.

The £1,000 trading allowance adds a middle ground: if your total trading income is £1,000 or less, you do not need to report it to HMRC regardless of whether it is a business or hobby.

How HMRC Decides

There is no single test. HMRC considers:

Intention to Profit

Are you doing this to make money? A genuine intention to generate profit suggests a business. Doing something purely for enjoyment, with no expectation of profit, suggests a hobby.

Regularity

A regular pattern of activity — weekly, monthly, or seasonal — suggests a business. One-off sales or occasional activity suggest a hobby.

Organisation

Do you have a business bank account, invoicing system, marketing presence, or business insurance? These organisational elements suggest a business.

Scale

Larger-scale activity (high turnover, many transactions, multiple customers) is more likely to be a business. Small-scale activity with occasional income leans towards hobby.

Skill and Expertise

Using professional skills to generate income (photography, carpentry, consulting) is more likely to be a business than a casual pursuit.

Common Grey Areas

• Selling on eBay or Etsy — occasional decluttering is not a business. Regular sourcing and selling is
• Renting equipment — occasional use by friends is not a business. Regular commercial hire is
• Freelance work — even irregular freelance projects constitute a business if done with commercial intent
• YouTube or social media income — if you actively monetise content, it is a business

What to Do

If you think your activity might be a business:

1. Register for Self Assessment (if income exceeds £1,000)
2. Start tracking income and expenses
3. Claim allowable business expenses to reduce your tax

If you are unsure, register anyway. There is no penalty for registering when it turns out you did not need to, but there are penalties for not registering when you should have.

Get started with Accounted to track your income and expenses.

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When in doubt, treat it as a business. You can always claim expenses that way. Sign up for Accounted and let Penny help you track your income properly.