Ask five London business owners what they pay their accountant and you will likely get five very different answers. Some pay a flat £60 a month, others closer to £300, and a surprising number genuinely do not know what they are paying for at all. If you are trying to work out whether your own fees are fair, or you are shopping around for the first time, the honest answer is that "how much should I pay" depends heavily on your turnover, your structure, and how much of the admin you want taken off your plate. This guide sets out realistic figures so you can benchmark your own situation with confidence.
What Most Small Businesses Actually Pay
For a straightforward sole trader with modest turnover, a fair monthly fee in London typically sits somewhere between £60 and £120, covering annual accounts and a self-assessment tax return. Limited companies usually pay more, often in the £100 to £250 range, because there is corporation tax, confirmation statements, and statutory accounts to manage alongside personal returns for the directors. VAT-registered businesses and those running payroll will sit towards the upper end of that scale, simply because there is more compliance work each month.
These figures are not arbitrary. They reflect the real hours an accountant spends reconciling your books, filing on time, and answering your questions. A price that looks dramatically lower than these ranges is worth investigating before you sign anything, because someone, somewhere, is absorbing the shortfall in either time or quality.
Why Location Still Matters, Even With Cloud Accounting
You might assume that cloud software has made geography irrelevant, and to an extent that is true. But firms based in and around London still tend to price with local business costs in mind, and many owners genuinely prefer an accountant who understands London-specific issues such as the complexities of commercial leases, IR35 for contractors working with London-based clients, and the sheer density of competing small businesses in the same postcode. Paying a fair London rate for local knowledge is often better value than chasing the cheapest quote from a firm with no context for your market or your customers.
There is also a practical side to this. A London-based accountant is more likely to understand the rhythm of your sector, from hospitality and retail to consultancy and creative services, and can flag issues before they become expensive problems rather than after the fact.
The Factors That Genuinely Move the Price
Not every business should pay the same fee, and a good accountant will explain exactly why your quote looks the way it does. The main drivers are usually:
- Annual turnover and transaction volume, which affects how long bookkeeping takes each month
- Whether you are a sole trader, partnership, or limited company
- VAT registration status and scheme
- Whether you run payroll, and for how many employees
- How much bookkeeping you do yourself versus handing over receipts and bank feeds
- Whether you need proactive tax planning or simply compliance filing
A fair quote should walk through these points with you rather than simply stating a number. If a firm cannot explain why your fee is what it is, that is a warning sign in itself, and it is worth pressing for a fuller breakdown before you commit to anything long term.
The Real Cost of Paying Too Little
There is a meaningful difference between an affordable accountant and a cut-price one. Affordable pricing reflects efficient processes, sensible use of software, and a firm that has deliberately built a service for small businesses. Cut-price pricing often means corners are being cut somewhere, whether that is response times, proactive advice, or the depth of review before your return is filed. The cost of a missed deadline, an HMRC enquiry, or a mistake in your VAT return can easily outweigh a year or two of savings from choosing the cheapest option on the table, and the stress of unpicking a mistake is rarely worth the money saved upfront.
What a Fair Price Should Include
Before comparing numbers, it helps to know what should sit inside a reasonable fee. Most established firms offering bookkeeping and accounting services for small businesses will include year-end accounts, your self-assessment or corporation tax return, basic HMRC correspondence, and some level of ongoing support by phone or email as standard. Anything beyond that, such as management accounts, forecasting, or complex tax planning, is reasonably charged as an extra, but the core compliance work should be clearly bundled in from the outset so there are no surprises later in the year.
How to Sense-Check Your Own Fee
If you already have an accountant and are unsure whether you are paying fairly, ask yourself three questions. Do you understand exactly what is included in your monthly fee? Have you had a genuine conversation about your business in the last twelve months, rather than just a filing reminder? And would you be comfortable asking for an itemised breakdown of your invoice? If the answer to any of these is no, it may be time to request a review, or to get a comparison quote from another London-based firm that specialises in accounting services for small businesses, simply to see how your current arrangement stacks up.
Negotiating Without Undermining the Relationship
It is entirely reasonable to ask a prospective or existing accountant whether there is flexibility in their pricing, particularly if your business is growing and bringing more work their way over time. What rarely works well is haggling purely on price without regard for service quality, because that pressure tends to get passed on somewhere, whether through slower turnaround or less proactive advice. A better approach is to ask what you would get at a slightly higher tier, and whether that unlocks meaningful extra value such as quarterly check-ins or tax planning conversations that could save you money elsewhere.
Seasonal businesses and those with genuinely variable turnover sometimes negotiate a fee that flexes modestly with income, reviewed once or twice a year rather than fixed rigidly for twelve months. This can be a sensible middle ground, provided the review process is clear and agreed in writing before you start.
How Package Tiers Change the Maths
Many London firms now structure their pricing in tiers, starting with a lean package for very early-stage sole traders and scaling up as turnover, VAT registration, and payroll are added. Understanding which tier you actually need, rather than defaulting to the cheapest or the most comprehensive, is one of the simplest ways to make sure you are paying a fair amount. It is worth revisiting this at least once a year, since a package that suited you at launch may no longer reflect the complexity of your business twelve or twenty-four months later.
The Bottom Line
There is no single "correct" number that every London small business should pay an accountant, but there is a sensible range, and there is a clear relationship between what you pay and what you should reasonably expect in return. Use the figures above as a benchmark, ask detailed questions about what is included, and be wary of anything that looks too cheap to be sustainable. Fair pricing, paired with real support, tends to save business owners far more in the long run than chasing the lowest number on a quote sheet.
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