It is often easier to describe what a bad accountant looks like than to recognise a genuinely good one, particularly early in a working relationship when you have little to compare against. Yet there are consistent, practical signs that separate a truly capable tax accountant from one who is simply adequate. These signs show up in how they communicate, how they handle your numbers, and how they behave when something unexpected happens. If you are currently working with a London accountant, or evaluating a new one, these are the markers worth watching for, because they reflect substance rather than the polish of a well-designed website.
They Ask Questions Before Giving Answers
A genuinely good tax accountant resists the temptation to give quick, generic answers before properly understanding your situation. When you raise a question, particularly one with any complexity, they will ask follow-up questions about your specific circumstances before responding. This might mean asking about other income sources before advising on a dividend strategy, or asking about your longer-term plans before recommending a VAT scheme. This behaviour reflects genuine expertise, because tax advice that ignores context is rarely reliable advice, no matter how confidently it is delivered.
This habit tends to persist well beyond the first meeting. A good accountant will periodically check in on changes to your circumstances, such as a new income source, a change in your business structure, or plans you had not previously mentioned, rather than assuming your situation from last year still applies unchanged. That ongoing curiosity, rather than a one-off fact-finding exercise at the start of the relationship, is a strong sign that the advice you receive will keep pace with your actual circumstances over time.
They Explain Things in Plain English
Tax legislation is genuinely complicated, but a good accountant should be able to translate that complexity into language you can actually understand and act on. If every conversation leaves you more confused than before, or if explanations rely heavily on jargon without checking that you have followed along, that is a meaningful sign, not a minor irritation. The best tax accountants can move fluidly between technical precision when it matters and clear, accessible explanation when you need to make a decision. You should walk away from a conversation with your accountant understanding not just what to do, but roughly why.
A useful test is to ask your accountant to explain a recent recommendation back to you in a single, straightforward paragraph, without technical shorthand, and see how naturally that comes to them. Accountants who genuinely understand a topic deeply are usually able to simplify it accurately, stripping away unnecessary detail while keeping the substance intact, whereas jargon is sometimes used, whether deliberately or not, to paper over a shakier grasp of the underlying material than the confident delivery might initially suggest.
They Flag Opportunities Without Being Asked
One of the clearest signs of genuine specialism is proactive advice that goes beyond what you specifically requested. A good tax accountant reviewing your figures might notice that your company structure could be more efficient, that you are eligible for a relief you have not claimed, or that a VAT scheme change would benefit you. This kind of unprompted, specific insight is difficult to fake and reflects an accountant who is genuinely engaged with your numbers rather than simply processing them. If your accountant has never suggested anything beyond exactly what you asked for, it is worth reflecting on whether that absence is meaningful.
They Are Transparent About Fees and Scope
Good accountants set clear expectations about what is included in their fee and what would cost extra, ideally in writing before work begins. If invoices consistently include surprise charges, or if scope creep happens without prior warning, that reflects poorly on the practice regardless of how technically competent the advice itself might be. A well-run firm treats fee transparency as part of good client service, not as a separate concern from the quality of tax advice. This is a straightforward thing to check by reviewing your engagement letter and past invoices carefully, and comparing them against what was originally promised, flagging any unexplained gap promptly rather than letting it slide.
They Respond Promptly and Consistently
Tax questions and HMRC correspondence rarely arrive at a convenient time, and a genuinely good accountant treats timely responses as a professional obligation rather than an optional courtesy. This does not mean instant replies at all hours, but it does mean a reasonable, consistent turnaround and a clear sense of who to contact and how. A few practical indicators are worth tracking over your first few months working with a firm:
- Queries are typically acknowledged within one or two working days.
- You deal with a consistent named contact rather than a rotating cast of staff.
- Deadlines are flagged well in advance, not at the last moment.
- Follow-up questions are answered without repeated chasing on your part.
They Handle HMRC Correspondence Calmly and Competently
How an accountant behaves when HMRC gets in touch is one of the most revealing tests of genuine expertise. A good tax accountant treats an HMRC letter or enquiry as a normal, manageable part of the process, responding methodically rather than with alarm or uncertainty. They should keep you informed at each stage, explain your options clearly, and generally take the pressure off you rather than adding to it. If a firm's demeanour changes noticeably for the worse the moment HMRC is mentioned, that discomfort often reflects limited practical experience handling enquiries, whatever their marketing claims about specialism, and it is worth probing gently for more detail before you assume otherwise.
They Deliver a Genuinely Comprehensive Service
Finally, a good tax accountant connects the dots between your bookkeeping, your management information and your tax position, rather than treating each as an entirely separate task. This joined-up approach, visible in a properly structured bookkeeping and accounting service, tends to catch issues earlier and produce more accurate, useful tax advice, because the person advising you on tax actually understands the full financial picture behind the numbers.
This connection also tends to show up in smaller, practical ways worth noticing, such as an accountant who references a trend from your monthly figures when discussing your annual tax position, or who flags a bookkeeping inconsistency before it becomes a larger problem at year end. These small, unprompted observations are a reliable sign that your accountant is genuinely looking at your business as a whole, rather than treating each piece of work as an isolated task disconnected from everything else you have shared with them, and it is a habit well worth actively valuing once you notice it happening consistently over time.
The Bottom Line
The signs of a genuinely good tax accountant are practical and observable: thoughtful questions before quick answers, plain-English explanations, proactive advice, transparent fees, prompt communication, calm handling of HMRC, and a joined-up approach across bookkeeping and tax. If your current accountant, or one you are considering, shows most of these consistently, that is a far more reliable signal than any amount of marketing language. A firm delivering genuine accounting and bookkeeping services built on these habits is one worth staying with, or worth seeking out if you are currently searching.
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