The most common UK accounting fee models in 2026 are fixed monthly retainers, project-based fixed fees, and value-based pricing. Hourly billing is in decline, although still used for ad-hoc advisory and one-off work. Pricing should reflect your costs (including non-billable time), market rates, value to the client, and the regulatory burden you carry. Most successful sole practitioners aim for a target hourly recovery of £75 to £150+, packaged into fixed monthly fees clients can budget for.
The four main fee models
| Model | How it works | Best for | Watch out for |
|---|---|---|---|
| Hourly | Time recorded, charged at hourly rate | Ad-hoc work, advisory, audit specialists | Client uncertainty, scope creep, pricing the cheap accountant problem |
| Project fixed fee | Agreed flat fee per piece of work | One-off jobs (incorporation, R&D claim, share scheme) | Scope creep, under-quoting |
| Monthly retainer (fixed) | Bundled services for a flat monthly fee | SME compliance + advisory clients, modern small practices | Defining the bundle, regular price reviews |
| Value-based | Price set by the value the client perceives | Higher-value advisory, M&A, growth strategy, R&D | Requires confidence and strong client conversation skills |
Cost-plus pricing as a starting point
If you are setting prices for the first time, work back from your costs:
- Calculate your total annual costs: salaries (including notional salary for your own time), software, insurance, AML, premises, CPD, marketing, contingency
- Estimate your billable hours per year (typically 1,200 to 1,500 for a working sole practitioner; lower if you also do management and business development)
- Add a target profit margin (often 20% to 30% for SME practices)
- Calculate the minimum hourly recovery rate that covers costs plus profit
- Use this as the floor when pricing fixed-fee or retainer work
For most UK SME-focused practices in 2026, target hourly recovery is £75 to £150+ depending on services and location. London and specialist work commands more.
Building a monthly retainer
A typical compliance + light-advisory retainer for a small limited company might bundle:
- Annual statutory accounts and corporation tax return
- Confirmation statement filing
- Director's self-assessment tax return
- Quarterly bookkeeping review or full bookkeeping (depending on package)
- VAT returns under MTD
- Payroll for one or two directors
- Software subscription (e.g. Xero) included or separately billed
- Reasonable email and phone support during business hours
Total monthly fee for this bundle ranges from £150 to £400+ for a simple owner-managed company in the UK in 2026, depending on transaction volume, complexity and location.
Communicating fees to clients
- Be specific: list what is included and what is extra. Avoid vague "all-inclusive" wording without a defined scope
- Offer tiered packages: three options (e.g. Essential, Growth, Premium) help clients self-select and frame your middle option as best value
- Show value, not just inputs: emphasise outcomes (compliance, peace of mind, tax savings, business advice), not just hours
- Quote inclusive of VAT and software where relevant: match the client's mental model
- Always confirm in an engagement letter before work starts
How and when to put fees up
Most successful practices review fees annually:
- Set a default annual increase (e.g. RPI + 1% to 3%) and write it into engagement letters
- Communicate the increase 60 to 90 days before it takes effect
- Frame the increase against rising costs (software, AML, ICAEW/ACCA fees, payroll), changes in your service, and continued investment in capability
- Be willing to lose 5% to 10% of clients each year through price-sorting; this is normal and healthy
The most common mistake new practitioners make is pricing too low to win clients quickly, then struggling to raise prices later. It is far easier to grow a smaller practice that prices fairly than to inherit dozens of underpriced clients you can never afford to serve properly.
When to use value-based pricing
Value-based pricing works best when:
- The client outcome can be quantified (R&D tax credits, EIS/SEIS, M&A, restructuring)
- The client is a growth business with clear commercial drivers
- You can confidently demonstrate the value of the engagement upfront
For day-to-day SME compliance work, fixed monthly retainers are usually a better fit than pure value-based pricing.
Key Takeaways
- Fixed monthly retainers are the dominant model for modern SME-focused UK practices in 2026
- Calculate cost-plus floors before pricing; aim for hourly recovery of £75 to £150+
- Define scope precisely; tier your packages; always use engagement letters
- Review and communicate annual fee increases proactively
- Value-based pricing fits high-value advisory but rarely day-to-day compliance work
Frequently asked questions
How much should I charge for a sole trader self-assessment?
UK 2026 fees for a straightforward sole trader self-assessment typically range from £150 to £400 depending on complexity, complete records, and location. Higher complexity (multiple income sources, capital gains) commands more.
How much for a limited company year-end?
For a simple owner-managed limited company, year-end accounts plus corporation tax typically range from £600 to £1,800 in 2026, often packaged into a monthly retainer of £150 to £400.
Should I undercut larger firms to win work?
Rarely a good long-term strategy. Compete on responsiveness, specialism, and client experience; price near or above the local market average if you can demonstrate value.
How often should I review fees?
At least annually. Build a default annual increase into your engagement letters so it is not a surprise.
Should fees include software?
Increasingly yes. Bundling Xero, QuickBooks or similar into your monthly fee simplifies the client's view, reduces admin, and lets you negotiate partner pricing with the vendor.