Every accountant I’ve ever spoken to gives the same answer to this question: “yes, you need me.” Every contractor I’ve spoken to who’s done their own accounts says: “honestly, you don’t, until you do.” The truth is in between. Whether you need an accountant depends on the kind of company you run and how much your time is worth. This guide is the honest answer, written by someone who has no horse in the race.
What an accountant actually does for a small Ltd
A small-Ltd accountant typically delivers seven things: bookkeeping (recording transactions accurately); year-end statutory accounts; Corporation Tax computation and CT600 filing; payroll and PAYE submissions if you have employees; VAT returns if registered; tax planning and director extraction strategy; and Companies House filings (the confirmation statement and accounts). The first four are compliance; the last three are where the real value sits, because getting your salary/dividend mix wrong by a few thousand pounds can cost you more than the annual fee on its own.
What you can do yourself (with care)
With modern accounting software, the doable list has grown. Bookkeeping with FasCash, Xero, FreeAgent or QuickBooks. Confirmation statement filing through Companies House. Simple statutory accounts and the CT600 via HMRC’s joint filing service. Payroll for one or two employees with a tool like BrightPay or Moneysoft. VAT returns once registered for Making Tax Digital. None of this requires an accountant for a single-director Ltd with straightforward affairs.
When you definitely need an accountant
Some situations push you firmly into “hire one” territory. Foreign income or foreign clients with cross-border VAT. R&D Tax Credits or Patent Box claims (the relief is generous, the rules are intricate). Multiple companies in a group structure. Significant director’s loan account activity. Complex shareholder arrangements – multiple share classes, EMI options, alphabet shares. Going through investment, a sale, a restructure or a member’s voluntary liquidation. Dealing with an open HMRC enquiry. In any of these cases, the savings or risk-mitigation an accountant brings comfortably exceeds the fee.
When DIY is reasonable
DIY is sensible for a single-director Ltd, no employees, profits under about £100k, one revenue stream, UK clients, sterling only, standard expenses, no R&D, no patent, no foreign element. You also need to be comfortable reading HMRC guidance and using accounting software, and you have to either enjoy the admin or at least not actively hate it. Plenty of contractors and consultants run their Ltds this way for years.
The real cost: accountant vs DIY
Typical small-Ltd accountant fees in 2026: £600–£1,500/year for basic accounts and CT600. Add £30–£80/month for ongoing bookkeeping if you outsource it. Add roughly £100/year per employee for a payroll bureau service. Total all-in: usually £800–£2,500/year for a small Ltd with no employees, more with employees and VAT. DIY costs you the software (£10–£30/month) plus your time – realistically 10–30 hours/year for a simple Ltd. Calculated honestly, a competent accountant usually pays for themselves through Corporation Tax savings, a sharper director extraction strategy, or one R&D claim alone.
Hidden value: what good accountants do beyond the basics
A merely competent accountant files what you give them. A genuinely good one spots tax-efficient changes you wouldn’t notice (dividend timing across tax-year boundaries, salary/dividend rebalances when rates change, pension contributions to manage marginal Corporation Tax), pre-empts HMRC enquiries by knowing what triggers them, acts as your representative if HMRC does come asking, gives you a network (lawyers, mortgage brokers who deal with directors), and sense-checks big decisions like a vehicle purchase, a property purchase or a hire. The difference between a £700 filing-only accountant and a £1,500 advisory accountant is rarely small.
How to find a good one (without overpaying)
Look for one of the regulated qualifications: ACCA, ICAEW, CIMA, AAT. Each carries professional indemnity insurance and a regulatory body you can complain to. Avoid unqualified bookkeepers calling themselves “accountants” without a regulator. Prefer fixed-fee packages over hourly rates for a small Ltd – it removes the incentive to over-engineer. Modern, cloud-first accountants who use FasCash, Xero or FreeAgent natively are usually cheaper and more efficient than high-street firms. The single best source is a recommendation from a peer in your industry; the worst is a Google search-ad.
When to switch accountants
Switch when they’re slow to respond, when they miss deadlines, when they only do compliance and never tax planning, when fees creep up without explanation, or when they’re still not using cloud software in 2026. The handover is straightforward: ask the outgoing firm for a “professional clearance letter” – tax records, working papers, open enquiries. The incoming firm requests it directly. Switch outside your year-end deadline window so the transition doesn’t collide with a filing.
Frequently asked questions
The questions UK directors ask most often about whether to hire an accountant.
How much does an accountant cost for a small UK Ltd?
Typically £600-£1,500/year for annual statutory accounts, Corporation Tax return, and the confirmation statement. Add £30-£80/month for ongoing bookkeeping if outsourced. Add roughly £100/year per employee for payroll. Quotes vary by region, complexity, and whether the firm is online-only or high-street.
Can I file my own Corporation Tax return?
Yes. HMRC's online service guides you through the CT600 step by step and accepts joint filing with Companies House for accounts. For a simple single-director Ltd with straightforward income and expenses, it's perfectly doable. For anything involving foreign income, R&D, group structures, or significant director's loans, get professional help.
What's the difference between a bookkeeper and an accountant?
A bookkeeper records transactions (sales, purchases, bank movements) and reconciles accounts. An accountant takes that record and produces statutory accounts, tax returns, and tax planning advice. Many small businesses do bookkeeping themselves with software and use an accountant only at year-end.
Are unqualified accountants allowed to file my company's accounts?
Yes — there's no legal requirement that accounts be prepared by a qualified accountant. Anyone can call themselves an accountant in the UK. Qualified accountants (ACCA, ICAEW, etc.) are regulated and have professional indemnity insurance. Unqualified ones may be cheaper but you have less recourse if they get it wrong.
Can my accountant be my registered office address?
Yes — many accountants offer this as a service for around £50-£150/year. Useful if you don't want your home address on the public record. Make sure they're prompt at forwarding mail; HMRC and Companies House correspondence is time-sensitive.
Do I need an accountant if I use accounting software like FasCash?
Software handles the recording, the calculation, and increasingly the submission. It doesn't replace tax planning advice, doesn't represent you to HMRC, and won't catch a complex situation it wasn't programmed for. For a simple Ltd, software-only is reasonable. For anything else, software plus a part-time accountant is usually the most cost-effective answer.
How do I switch accountants?
Tell your existing accountant you're switching and ask for a 'professional clearance letter' — a standard handover document including your tax records, working papers, and any open enquiries. Your new accountant will reach out to your old one directly to request these. Try to switch outside your year-end deadline window to avoid disruption.
Can I just use ChatGPT or AI tools instead of an accountant?
For factual lookups and general guidance, yes — they're useful. For your actual tax position, no. AI tools don't have your full financial picture, can't represent you to HMRC, and confidently invent figures that look right but aren't. Use AI to learn what questions to ask; use a qualified accountant to act on the answers.
