Choosing an Accountant
Fixed Fee vs Hourly Accountants: Which Is Better for Sole Traders and Small Businesses?
Every accountant gets asked the price question. The honest answer starts with a different question: priced how? The gap between a fixed-fee and an hourly relationship is not really about the total cost, it is about who carries the risk, and whether you can afford to ask your own accountant a question. Here is the comparison, including the cases where hourly genuinely wins.
How the Two Models Actually Work
Fixed fee: a defined scope (accounts, tax return, filing, ongoing questions) for a price agreed before work starts. The firm carries the risk of the job taking longer than expected.
Hourly: you pay for time spent, typically in 6 or 15 minute units, at anywhere from £75 to £300+ per hour depending on the firm and who picks up your file. You carry the risk, and you find out the total afterwards.
The Hidden Cost of Hourly: You Stop Asking Questions
The biggest problem with hourly billing is behavioural, not arithmetic. When every email starts the meter, clients ration contact. They sit on the "is this deductible?" question, the "HMRC sent me something" letter, the "should I register for VAT?" worry. Those unasked questions are precisely where tax gets overpaid and penalties get born. A pricing model that discourages communication with your own adviser is working against you, whatever the headline rate.
Where Hourly Genuinely Makes Sense
Fair is fair: open-ended work with unknowable scope, a complex HMRC enquiry, litigation support, a messy multi-year reconstruction with missing records, can be reasonable to bill by time, because no firm can sensibly fix a price for a job with no known shape. The honest pattern many firms use, ours included, is fixed fees for defined work and a quoted, capped arrangement for the genuinely unpredictable.
What a Good Fixed Fee Should Include
- Your accounts and tax return prepared, reviewed and filed
- Questions answered through the year without a meter running
- HMRC correspondence handled by an HMRC-registered agent
- Deadline management, so January is not a surprise
- A clear written list of what is in scope, and what would be quoted separately
That last line matters most. A fixed fee without a scope list is just an hourly relationship with a delayed argument. Real UK price ranges for all of this are in our guide to how much an accountant costs in 2026.
The Comparison That Actually Matters
For a typical sole trader, the annual compliance work is predictable: a known number of transactions, a known set of filings. Predictable work suits fixed pricing, and the certainty has its own value: you can budget for it, and you use the relationship more, which is where the savings come from. The clients who get the most value from any accountant are the ones who contact them most, and fixed fees are the model that makes that rational.
The £40 question that saved £700
A sole trader client emailed in October asking whether replacing his van's clutch was claimable (yes, repairs are deductible). A two-minute answer. On an hourly model that email costs £40 or so, and he later admitted he nearly did not send it, and would not have claimed the £700 repair or thought to mention the other £2,100 of repairs that year.
The question cost nothing under a fixed fee, and the answer cut his tax bill by hundreds. Multiply that pattern across a year and the pricing model pays for itself.
Frequently Asked Questions
What does a fixed fee usually include?
Defined scope work: your bookkeeping review, accounts, tax return, filing, and ordinarily the questions you ask along the way. The fee is agreed before work starts. Anything genuinely outside scope (an HMRC enquiry, say) is quoted separately before it begins, which is the test of an honest fixed-fee firm.
Why do some accountants still bill hourly?
Hourly suits unpredictable, open-ended work like complex disputes and large advisory projects. For compliance work with a known shape (a sole trader return, small company accounts) the hours are predictable, so hourly billing mostly transfers risk and uncertainty from the firm to the client.
Is a cheap fixed fee a red flag?
Sometimes. Very low headline fees can mean offshore processing, no review, slow responses or surprise extras for things you assumed were included. Judge the scope list and responsiveness, not just the number. A fixed fee is only good value if the work behind it is real.
What questions should I ask before signing with any accountant?
Four: exactly what is included and what costs extra; who actually does my work and answers my emails; are you an HMRC-registered agent; and what happens if I get an HMRC letter. Clear answers to those four predict the relationship better than any price.
Want a price before any work starts?
Our fees are fixed and agreed up front: you know the cost before we lift a finger, and asking questions is free, encouraged and answered by the accountant doing the work. Book the free call and get a real quote in 15 minutes.
Or email info@yourtaxhelp.co.uk | yourtaxhelp.co.uk
General guidance only. Not personal tax advice. Contact us for advice specific to your situation. All figures are for the 2026/27 tax year unless otherwise stated.