Accountant vs bookkeeper vs doing it yourself: what each costs for sole traders and limited companies, and how to decide in your first year.
Zazentax Startup Series, Part 2 of 3 · Updated July 2026 · Reading time: about 8 minutes
Ask this question on any United Kingdom business forum and you will receive two confident, contradictory answers within the hour. One camp insists that paying an accountant in year one is burning money that a startup does not have. The other insists that doing it yourself is a false economy that ends in penalties. Both camps are describing their own business and assuming it is yours.
The honest answer is that the decision depends on measurable features of your situation: your legal structure, your transaction volume, your familiarity with numbers, and the value of your own time. Before proceeding to the decision itself, two clarifications are needed, because the question as usually asked contains two hidden confusions.
Clarification One: Nobody Is Legally Required
There is no law obliging any United Kingdom business, sole trader or limited company, to engage an accountant or a bookkeeper. Every filing your business must make, from a Self Assessment tax return to a company’s statutory accounts, can legally be prepared and submitted by you. What the law does require is that those filings are accurate and on time, and that adequate records support them. Responsibility for errors remains yours even when a professional prepares the documents, although a competent professional makes errors far less likely.
Clarification Two: A Bookkeeper and an Accountant Are Different Jobs
The two terms are used interchangeably in forum discussions, which causes real confusion about prices and value. The distinction is simple.
- A bookkeeper does the regular recording work: entering and categorising transactions, matching them to receipts, reconciling the bank account, chasing missing paperwork and, where relevant, preparing VAT (Value Added Tax) returns. Bookkeeping is frequent, rhythmic work, typically weekly or monthly.
- An accountant works on top of those records: preparing year-end accounts and tax returns, advising on how to structure pay, claim reliefs and plan for tax, and representing you in dealings with HMRC (His Majesty’s Revenue and Customs, the United Kingdom tax authority). Accountancy is periodic, judgement-heavy work.
Key point: Modern accounting software has absorbed much of the traditional bookkeeping role. A new business with modest volume can often do its own bookkeeping in software and buy accountancy judgement only where it adds value. This hybrid is the most commonly recommended arrangement by experienced owners on the main United Kingdom forums, and for good reason.
What Doing It Yourself Actually Involves
The workload differs sharply by structure, and this is where many first-year plans go wrong.
As a sole trader, the compliance core is one document: the annual Self Assessment tax return, reporting your business income and expenses to HMRC. If your affairs are simple, your records are clean and your turnover is below the VAT registration threshold of £90,000, this is realistic to handle alone. The tax calculation itself is done by HMRC’s system or your software; your job is supplying accurate, well-evidenced figures.
As a limited company director, the list is materially longer: statutory accounts prepared under the correct accounting standards and filed with Companies House (the registrar of companies for the United Kingdom); a Company Tax Return, known as form CT600, filed with HMRC together with a corporation tax computation; an annual confirmation statement; payroll filings under PAYE (Pay As You Earn, the system through which employers deduct tax from wages) if the company pays you a salary; and correct paperwork for any dividends. Each item is learnable, but the error surface is wide, and mistakes by directors carry personal consequences, including penalties and, in serious cases, disqualification.
Action required: If you have formed a limited company, price professional help before deciding against it. The company year-end is where do-it-yourself owners most often discover, late, that the job is larger than the sole trader equivalent they had in mind.
The Calculation: Fees Against Errors and Hours
Treat the decision as a small investment appraisal rather than a matter of identity. Three numbers matter.
First, the fee. Typical United Kingdom market rates in 2026 are approximately £150 to £400 per year for a straightforward sole trader tax return, £600 to £1,500 per year for a small limited company’s accounts and tax filings, and £25 to £45 per hour for freelance bookkeeping. Accounting software alone typically costs £10 to £35 per month. These are ranges, not quotes, but they are the right order of magnitude for the comparison.
Second, the cost of error. A Self Assessment return filed one day late triggers an automatic £100 penalty, with further daily and percentage-based penalties as the delay grows. Late company accounts start at £150 and rise to £1,500 as the delay lengthens, and the penalty doubles if it happens in two successive years. More significant than penalties, however, is silent overpayment: reliefs and allowable expenses that an inexperienced preparer simply does not know to claim. A single missed relief can exceed a year’s fee.
Third, your hours. Suppose the year-end work takes you 25 hours of evenings and weekends as a beginner, and suppose an hour of your effort, spent instead on winning customers, is worth £30 of future revenue. The do-it-yourself route then has an implicit cost of £750 before any error occurs. Consequently, a £600 fee can be the cheaper option even when it looks like the expensive one.
A Decision Framework You Can Apply in Five Minutes
The following table condenses the forum debate into the factors that actually move the answer.
| Your situation | Sensible starting point | Why |
|---|---|---|
| Sole trader, low volume, simple income, comfortable with numbers | Do it yourself with software | One annual return; software plus clean records covers it |
| Sole trader, approaching £50,000 income or the £90,000 VAT threshold | Software plus an accountant’s annual review | Making Tax Digital quarterly reporting and VAT raise the stakes |
| New limited company, single director | Do your own bookkeeping; engage an accountant for year-end and tax | The hybrid keeps fees modest while covering the high-risk filings |
| Selling on online marketplaces or in multiple currencies | Specialist support early | Platform settlement reports mix sales, fees and refunds in ways that are easy to misrecord |
| Employing staff, or VAT registered | Professional help, at least for payroll and VAT | Both regimes have frequent deadlines and low tolerance for error |
Two further signals deserve weight. If bookkeeping is consistently three months behind, the cheapest fix is help, whatever your structure. Conversely, if you enjoy the numbers and your business is simple, doing it yourself in year one is also an education: owners who have prepared one return understand their accountant’s later advice far better.
If You Do Hire, Hire Well
The title “accountant” is not legally protected in the United Kingdom, so anyone may use it. Accordingly, check for membership of a recognised professional body, such as the ICAEW (Institute of Chartered Accountants in England and Wales), the ACCA (Association of Chartered Certified Accountants), the CIMA (Chartered Institute of Management Accountants) or, for bookkeepers, the AAT (Association of Accounting Technicians). Ask for a fixed annual fee with a written scope, confirm who files what and by when, and, if you sell online, ask specifically about experience with marketplace settlement data. A good adviser will also be candid about which tasks you can safely keep doing yourself.
Key Takeaways
- No law requires you to hire an accountant or bookkeeper; the law requires accurate, timely filings, and responsibility stays with you either way.
- Bookkeeping is the regular recording work; accountancy is the periodic judgement work. Software has made the first far easier to self-serve than the second.
- Compare the fee against penalties, missed reliefs and the value of your own hours, not against zero.
- Sole traders with simple affairs can reasonably start alone; limited companies, VAT registered businesses and marketplace sellers usually should not.
- If you hire, verify professional body membership and agree a fixed, written scope.
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