If you have started earning money from walking dogs, whether as a side hustle or a full-time business, you may be wondering when you need to register with HMRC. The answer depends mainly on how much gross self-employed income you make in the tax year.
This guide explains when dog walkers count as self-employed, how the trading allowance works, what records to keep and when VAT or Making Tax Digital may become relevant. For dedicated support, see our accountant for dog walkers page.
When Does a Dog Walker Count as Self-Employed?
In the UK, HMRC usually treats you as self-employed when you are running a trade or business on your own. Dog walking will usually fall into this category if you:
- Set your own prices
- Find your own clients
- Decide how and when you work
- Provide your own equipment
- Take responsibility for the service you provide
You do not need a formal contract or limited company for HMRC to view you as self-employed. If you are running a dog walking service and getting paid for it, you are very likely trading.
The £1,000 Trading Allowance Explained
The trading allowance can cover up to £1,000 of gross trading income in a tax year. GOV.UK explains the rules in its guidance on tax-free allowances for trading income.
Usually no registration
- If total self-employed income is £1,000 or less
- You may not need to register for Self Assessment for that income
- Still keep records in case income grows
Usually register
- If gross self-employed income is more than £1,000
- You normally need to register with HMRC
- You will usually file a tax return each year
Important: the £1,000 limit is based on income before expenses, not profit. If you earn £3,000 from dog walking and spend £2,200 on costs, your income is still £3,000 for the trading allowance test.
When Do Dog Walkers Need to Register with HMRC?
You normally need to register for Self Assessment by 5 October after the end of the tax year in which you first need to report your income. You can register through GOV.UK's Self Assessment registration service.
For example, if you start dog walking in June and earn more than £1,000 by the following 5 April, you should usually register by 5 October after that tax year ends.
Once registered, you will file a tax return each year reporting:
- Your dog walking income
- Your allowable expenses
- Any other income, such as employment or rental income
What Records Should Dog Walkers Keep?
From day one, it helps to keep good records, even if you are not yet sure whether you will cross the £1,000 mark.
Good records make it easier to decide when to register, file accurate tax returns and prove your figures if HMRC asks questions. HMRC explains record-keeping requirements in its guide to business records if you are self-employed.
What About VAT and Making Tax Digital?
Most dog walkers do not need to worry about VAT when they start. You must register for VAT if your VAT taxable turnover goes over the current registration threshold in a rolling 12-month period, or if you expect it to go over the threshold in the next 30 days. GOV.UK confirms the current rules in its guide on when to register for VAT.
Making Tax Digital for Income Tax is also being phased in. GOV.UK confirms that sole traders and landlords over the relevant qualifying income thresholds will need to use MTD, with the first phase applying from 6 April 2026 for qualifying income over £50,000.
Working with an accountant and using cloud software early can make both VAT monitoring and Making Tax Digital much easier if your business grows.
How Simplr Accounting Helps New Dog Walkers
At Simplr Accounting, we help UK dog walkers and pet care businesses get set up properly from day one. We can help you decide when to register with HMRC, set up Self Assessment correctly, choose simple tools for tracking income and expenses, and understand what you can legitimately claim.
If you want support from an accountant who understands the pet care world, get in touch. We will help you keep things simple, compliant and stress-free.