Do Sole Traders Need an Accountant? The Honest Answer
Nothing in the law makes you hire one. Whether you should comes down to three things, and for most sole traders the right answer is neither yes nor no.
The law says no
Start with what is actually required, because it is less than most people assume. If your income from self-employment is over the £1,000 trading allowance, you register for Self Assessment by 5 October after the tax year ends, keep records, and file and pay by 31 January (GOV.UK). You keep those records for at least five years after that 31 January deadline (GOV.UK).
None of that needs an accountant. HMRC lets you appoint one, and plenty of sole traders never do.
Quick answer: No, the law doesn't require a sole trader to use an accountant: you can register, keep records and file yourself. An accountant earns their fee when you're VAT registered, in the Construction Industry Scheme, deciding whether to incorporate, or facing an HMRC enquiry. For most sole traders the best value is the middle way: keep your own books in free software, send your own quarterly updates, and pay an accountant for the year end.
What changed in April 2026
Making Tax Digital for Income Tax is the reason this question is being asked again. Since 6 April 2026, sole traders and landlords whose qualifying income was over £50,000 have had to keep digital records and send HMRC a cumulative update every quarter through compatible software, on top of the year-end submission. The threshold falls to £30,000 from April 2027 and £20,000 from April 2028 (HMRC).
Qualifying income means gross income from self-employment and property together, before expenses, so a plumber turning over £35,000 is in from 2027 whatever the profit. The quarterly deadlines are 7 August, 7 November, 7 February and 7 May, and HMRC is not issuing penalty points for late quarterly updates in the first year (HMRC).
The important bit for this question: Making Tax Digital makes you use software. It does not make you use an accountant. The question is whether the extra admin tips you into wanting one.
What an accountant costs
| What you buy | Typical fee |
|---|---|
| Self Assessment return only | £200 to £350 plus VAT |
| Ongoing help, not VAT registered | £50 to £120 a month (£600 to £1,200 a year) |
| Ongoing help, VAT registered | £100 to £180 a month (£1,200 to £2,000 a year) |
Those are 2026 market ranges (Sleek), and London practices tend to charge more. The same source names the three things that move a quote: how complicated your income is, how organised your records are, and how close to 31 January you turn up. The middle one is the one you control.
Three sole traders
The answer depends far more on the shape of the business than its size. Three composites, built from the kind of businesses that ask us this most often:
Simple income, a short list of expenses, no stock worth counting, no employees. Making Tax Digital reaches her from April 2028 if her income stays above £20,000.
An accountant would cost her around £250 a year for the return and would mostly retype what her bank already shows. Free software that codes her bank lines and photographs her receipts does the same job.
Over £50,000, so he has been in Making Tax Digital since April 2026. His main contractor deducts 20% under the Construction Industry Scheme, and those deductions are credited against his tax bill, often producing a refund. He bought a van this year, which raises the question of capital allowances.
The quarterly updates are routine once his bank is coded. The year end is where the money is: CIS credits claimed correctly, the van treated properly, payments on account set right.
Over the £90,000 VAT registration threshold (GOV.UK), which brings registration, a choice of VAT scheme and quarterly VAT returns. At this level of profit the obvious next question is whether trading through a limited company would leave more after tax, and that answer depends on details of Sam's own position.
Getting the VAT scheme or the incorporation decision wrong costs far more than a year of fees.
When an accountant pays for themselves
You probably don't need one if
- Your income comes from one or two sources
- You're not VAT registered
- Your expenses are routine and recurring
- You're comfortable with software and a monthly habit
You probably do if
- You're VAT registered, or about to be
- You work under the Construction Industry Scheme
- You're thinking about incorporating
- You've bought significant equipment or a vehicle
- HMRC has opened an enquiry
The middle way most sole traders should take
The choice is usually presented as all or nothing: do everything yourself, or hand a shoebox to an accountant every January. The better arrangement for most people sits between the two.
- Keep your own books, continuously
Code the bank as it happens and photograph receipts when you get them. Half an hour a month is normal once the software knows your regular costs. - Send your own quarterly updates
If you're in Making Tax Digital, the update is a summary of books you're already keeping. Done from tidy records it takes minutes. - Pay an accountant for the year end
The final declaration, the CIS credits, the capital allowances, the tax planning. Because your records are already organised, it is the cheapest version of that service you can buy.
That is the arrangement IQ Books is built for. It is free for one business with the whole ledger: invoicing, receipt capture, VAT and Making Tax Digital, with bank feeds through BankSync if you want them (on BankSync's own plan). IQ Books is on HMRC's list of software for Making Tax Digital for Income Tax for sole traders' digital records and quarterly updates. The year-end final declaration isn't done in IQ Books, which is exactly where your accountant, or software that supports it, comes in. Automatic coding by CodeIQ uses credits from the 1,000 free ones every account starts with; coding a line yourself is always free.
And if your accountant already uses ReconcileIQ, ask them. A practice can give its clients a full IQ Books organisation of their own, so your books and theirs are the same books.
The honest answer
You don't need an accountant to be a sole trader. You need records, a habit, and from 2026 onwards, the right software. Whether an accountant is worth it depends on VAT, CIS, the size of your decisions and how much you value your evenings in January.
For most sole traders the best value is neither extreme. Keep the books yourself, because that is cheap, quick and keeps you in control of your numbers. Buy the expertise for the parts that need it.
Keep your own books, free
IQ Books: one business, the whole ledger, Making Tax Digital quarterly updates included. Your accountant can join you when you need them.
Start free with IQ BooksFrequently Asked Questions
No. A sole trader can register for Self Assessment, keep records and file their own return. HMRC allows you to appoint an accountant to act for you, but there is no requirement to.
Typical 2026 fees are £200 to £350 plus VAT for a Self Assessment return alone, £600 to £1,200 a year for ongoing help if you're not VAT registered, and £1,200 to £2,000 a year if you are. Well-organised records usually bring the quote down.
No. Making Tax Digital for Income Tax requires compatible software for your digital records and quarterly updates, not an accountant. Sole traders with qualifying income over £50,000 joined in April 2026, falling to £30,000 in April 2027 and £20,000 in April 2028.
Yes. A quarterly update is a summary of the income and expenses you've already recorded, sent through compatible software. IQ Books sends them for sole traders and is on HMRC's software list for Making Tax Digital for Income Tax.
Usually when you're VAT registered, working under the Construction Industry Scheme, buying significant equipment, deciding whether to incorporate, or dealing with an HMRC enquiry. In those cases good advice is typically worth more than the fee.
Keep your own books continuously in good software and use an accountant only for the year end and advice. Accountants price partly on how organised your records are, so tidy books are the cheapest version of the service.