How to Claim Professional Fees in the UK (2026 Guide)

Quick answer

Accountancy, legal, and consultancy fees are deductible in the UK when they relate to the day-to-day running of the business: bookkeeping, accounts preparation, debt recovery, employment advice, routine contracts. They are not deductible when they relate to a capital transaction such as buying premises, acquiring a company, or raising share capital. Those fees are added to the cost of the asset instead. Employees get relief only for fees they must pay to practise, through HMRC’s List 3.

Are professional fees tax deductible in the UK?

HMRC applies the same test to professional fees that it applies to everything else: was the cost incurred wholly and exclusively for the trade, and is it revenue rather than capital? The second half is where professional fees go wrong. The guidance in HMRC’s Business Income Manual is blunt: fees connected with the acquisition, disposal, or modification of a capital asset are themselves capital expenditure and so disallowable. A solicitor’s bill for buying a workshop is capital. The same solicitor’s bill for chasing an unpaid invoice is revenue.

GOV.UK’s own list for the self-employed makes the practical distinction clear. You can claim the cost of hiring accountants, solicitors, surveyors, and architects for business reasons, plus professional indemnity insurance premiums. You cannot claim the legal costs of buying property and machinery, fines for breaking the law, or the cost of preparing and submitting your Self Assessment return.

For accountancy specifically, HMRC’s Statement of Practice SP 16/91 is what makes life workable. Strictly, computing and agreeing your own tax liability is not a cost of earning profits, but HMRC accepts normal recurring accountancy fees for preparing accounts and agreeing the tax on them as allowable. Fees for an enquiry that uncovers careless or deliberate errors are the exception.

Limited companies face a few extra traps. Fees on issuing shares or restructuring the capital base are capital. Fees on a short lease renewal are usually allowed, but fees on the grant of a brand new lease are not. Fees for a take-over bid, whichever side you are on, are capital.

How much can you claim?

The full invoice amount, where the fee is revenue in nature. Worked example: a sole-trader joiner pays £1,100 to an accountant for annual accounts, bookkeeping review, and the tax computation, £420 to a solicitor for recovering a bad debt, and £2,600 in legal fees on the purchase of a unit on an industrial estate. The first two are deducted in full, saving £304 at the basic rate. The £2,600 is not deducted at all; it is added to the cost of the unit, which matters only if the building is later sold or qualifies for structures and buildings allowance.

Employees are a separate case. There is no general deduction for an employee’s professional fees. Relief exists only where you must pay the fee to be able to do your job and the body is on HMRC’s List 3, which was last updated on 29 September 2026. That covers things like a practising certificate or a statutory register fee. Annual membership subscriptions to the same bodies are covered on the claim subscriptions in the UK page, and the two are often paid together on one invoice, so split them.

VAT on professional fees

UK accountants, solicitors, and consultants charge 20% VAT, and a VAT-registered business recovers it as input VAT. Advice from an overseas firm arrives without UK VAT and is caught by the reverse charge: account for output VAT and input VAT on the same return. Where fees relate to an exempt supply, such as some land transactions, input VAT may be restricted under partial exemption. Fees that are capital for income tax are still recoverable for VAT in the normal way; the two tests are independent.

Record-keeping requirements

Keep the engagement letter and every invoice, and insist that solicitors itemise work that straddles revenue and capital matters. A single invoice for “legal services” covering both a lease dispute and a property purchase will be challenged if you deduct the lot. Self Assessment records must be kept for at least 5 years after the 31 January filing deadline, and VAT records for 6 years. The UK record-keeping guide covers formats and digital links under Making Tax Digital.

How to claim, step by step

1. Sort each professional invoice into revenue or capital by asking what the work was for, not who sent it.
2. Deduct revenue fees in the accountancy and legal expenses box of the SA103 (self-employed) or as administrative expenses in the company accounts.
3. Add capital fees to the cost of the asset they relate to and track them in the fixed asset register.
4. Recover input VAT on all business professional fees, applying the reverse charge to overseas advisers.
5. Employees: check the body against List 3, then claim through Self Assessment or form P87, only for fees you paid yourself.
6. At year end, review any enquiry or dispute fees separately and apply the SP 16/91 position before deducting.

Common mistakes

• Deducting the legal fees on a property purchase as a running cost instead of adding them to the asset’s cost.
• Claiming the whole accountant’s bill when part of it is personal tax return work.
• Treating company formation or share issue costs as administrative expenses.
• Employees claiming registration fees to bodies not on List 3, or fees their employer reimbursed.
• Forgetting the reverse charge when a US or EU adviser invoices without VAT.

Software that helps

• Dext captures adviser invoices and keeps them attached to the transaction for the audit trail.
• ExpenseFlow reads legal and accounting invoices with frontier vision AI, explains under each line whether a fee is a running cost or belongs to an asset, lowers its confidence for review when the invoice names a transaction without saying what was acquired, flags overseas adviser bills that need reverse-charge treatment, and syncs each approved bill to Xero or QuickBooks with the document attached.
• FreeAgent carries a dedicated accountancy and legal category that maps cleanly to the SA103 box.

FAQ

See the answered questions above for accountant fees, capital legal costs, HMRC enquiries, employee registration fees, and VAT recovery.