The question of whether you need an accountant as a sole trader comes up constantly, and the instinctive answer from most accounting firms is a resounding 'yes.' We're going to be more nuanced than that — because for some sole traders, doing it yourself is genuinely fine, and saying otherwise would be misleading.

That said, the landscape has changed. Making Tax Digital for Income Tax is now live for sole traders earning over £50,000, with the threshold dropping to £30,000 in April 2027 and £20,000 in April 2028. Quarterly reporting, digital record-keeping requirements, and a points-based penalty system have added enough complexity that the DIY calculation no longer stacks up as easily as it once did for a significant portion of the UK's self-employed population.

Here is how we think about it — and what we tell clients who ask us the same question.

If your affairs are straightforward — one income source, no employees, no VAT registration, modest expenses, and total self-employment income below the MTD threshold — there is no law requiring you to use an accountant. HMRC's self-assessment system is designed to be accessible, and plenty of sole traders navigate it competently every year.

The honest triggers for 'you probably don't need one yet' look something like this:

• Annual self-employment income comfortably below £20,000
• No other taxable income streams (rental income, dividends, savings interest above the personal allowance)
• Simple, low-volume expenses with clear receipts
• No employees and no PAYE responsibilities
• You already keep decent records and don't find the self-assessment portal stressful

If that describes you, the fee you'd pay a sole-trader accountant might exceed the tax you'd save in a given year. We'd rather tell you that plainly than oversell a service you don't need right now.

What changes that calculation, though, is growth — and the MTD threshold coming down to £20,000 by 2028 means a much larger slice of the self-employed population is going to face a materially different compliance burden within the next two years.

For most sole traders we work with, the accountant's value sits in three places: tax saving, time saving, and risk reduction. The third one is the least visible but often the most important.

Tax saving

A competent accountant will ensure you're claiming every allowable expense — home office costs, equipment, professional subscriptions, mileage, training, phone and broadband apportionment — and structuring your affairs efficiently. One client described it as 'the money he saved me more than covers his fees.' That's a common outcome, not an exception.

Time saving

How many hours a month do you spend on bookkeeping, chasing receipts, and preparing your tax return? At your day rate, that time almost certainly costs more than a fixed-fee accountancy engagement. If you're earning £40,000 a year as a sole trader, you're billing somewhere between £20 and £40 per hour. A few hours a month lost to admin adds up fast.

Risk reduction

HMRC enquiries are relatively rare, but they do happen — and they're disproportionately stressful for sole traders who self-prepare. Having a chartered accountant who has signed off your returns, maintained your records, and can correspond with HMRC on your behalf is worth more in that scenario than any individual tax saving.

Making Tax Digital for Income Tax (MTD for IT) is the most significant compliance change for sole traders in a generation, and it's already in effect for those earning over £50,000. Around 864,000 sole traders and landlords are affected at the current threshold — and roughly a third of them have no accountant in place.

Here is what MTD for IT actually requires:

• Digital record-keeping from the start of your MTD accounting period — paper records and spreadsheets alone no longer comply
• Quarterly updates submitted to HMRC via MTD-compatible software, with deadlines of 7 August, 7 November, 7 February, and 7 May each year
• A final declaration replacing the traditional self-assessment return
• MTD-compatible software throughout — HMRC accepts platforms including Xero, QuickBooks, and Sage

Miss a quarterly submission and you accumulate penalty points. Four points triggers a £200 penalty, and the points don't reset easily. That is a material change from the old annual deadline model, where a single missed date carried a single penalty.

The threshold drops to £30,000 in April 2027 and £20,000 in April 2028. If your income sits anywhere near those levels, the question of whether you need an accountant as a sole trader has a more pressing answer than it did three years ago. An accountant who is already set up on MTD-compatible software — and who manages your quarterly submissions as part of a fixed-fee engagement — removes that compliance burden entirely.

The self-assessment return is the most visible output, but it's rarely where the real value sits for a growing sole trader.

A chartered management accountant working with you as your business develops can help with:

• Timing your income and expenses to manage your tax bill across years — particularly relevant if your income is variable
• Advising on the sole trader vs limited company decision as your turnover grows — there is a point at which incorporation makes clear financial sense, and knowing when that is matters
• Flagging VAT registration obligations before you accidentally breach the threshold mid-year
• Planning for payments on account — a predictable cashflow surprise for many first-time self-assessment filers
• Acting as a sounding board for financial decisions as your business scales

We work with sole traders across a range of sectors — consultants, freelancers, hospitality operators, internet resellers — and the pattern we see consistently is that the accountant relationship becomes more valuable the more the business grows, not less. If you are already thinking about your tax position as a sole trader in any strategic way, professional advice pays for itself.