Sole trader accountants · UK-wide
Sole trader accountant UK for the self-employed.
Self Assessment. Allowable expenses. VAT registration. Bookkeeping. When to incorporate. Fee confirmed in writing.
Book a call →What does a sole trader accountant do?
A sole trader accountant prepares and files your annual Self Assessment, checks allowable expenses, monitors VAT registration, keeps records in order, and helps you decide when a limited company structure may make sense. RR Accountants supports UK sole traders with tax returns, bookkeeping, VAT, MTD readiness, and year-round planning through Compliance Vault™.
What are sole trader accounts?
Sole trader accounts are the records and year-end figures that show your business income, your business expenses and the profit you pay tax on. You report that profit on your Self Assessment tax return. You do not send your records to HMRC with the return, but you must keep them so you can work out your profit or loss and show them to HMRC if asked.
- Keep records of all sales and income, all business expenses, VAT records if you are VAT registered, PAYE records if you employ people, and your personal income.
- Keep them for at least 5 years after the 31 January submission deadline for the tax year.
- Cash basis is the default method from the 2024 to 2025 tax year: you record income and expenses when money is received or paid. You can opt out and use traditional accounting, which records them by invoice or bill date.
- Your tax year runs 6 April to 5 April. You can choose accounting dates that match it, which makes the return simpler.
Illustration for 2026/27, England, Wales and Northern Ireland: a sole trader with £30,000 of profit and no other income pays Income Tax of £3,486 (20% of the £17,430 above the £12,570 Personal Allowance) and Class 4 National Insurance of £1,045.80 (6% of the same £17,430), £4,531.80 in total. No Class 2 is payable because profits are above £7,105. Scottish Income Tax bands differ, and student loans, other income and payments on account change the real figure.
See allowable expenses, Self Assessment support and sole trader vs limited company. New to self-employment? Our guide to registering for Self Assessment covers the first steps.
Sources: GOV.UK business records, Income Tax rates and self-employed National Insurance rates.
How fees are scoped
A simple annual return and a growing sole-trader business with VAT, bookkeeping, staff, and MTD preparation are not the same job. We scope the fee after looking at your records, filing history, VAT position, software, and whether you need ongoing support.
Return
Self Assessment complexity and income sources
Records
Bookkeeping quality, bank feeds, missing evidence
VAT
Threshold, registration, MTD returns, scheme choice
Growth
Incorporation, hiring, tax provision, MTD readiness
What we handle for sole traders
Self-assessment tax return →
Annual SA100 prepared and filed accurately. All allowable expenses reviewed and claimed.
Allowable expenses review →
Every expense category reviewed at onboarding. Home office, vehicle, equipment, subscriptions, training.
VAT registration and returns →
VAT threshold monitoring, registration when due, quarterly MTD-compliant returns.
Bookkeeping →
Monthly records maintained: income, expenses, reconciliations. Compliance Vault™ standard.
Incorporate or stay sole trader? →
Annual assessment of whether a limited company structure would be more tax-efficient for your situation.
National Insurance planning →
Class 4 NI (and voluntary Class 2) position reviewed annually. Gaps in State Pension record identified.
Sole trader accountant: FAQs
What does a sole trader accountant do?
A sole trader accountant prepares and files your annual self-assessment tax return, advises on allowable business expenses, registers and manages your VAT returns if applicable, and advises on whether and when incorporating to a limited company makes sense. For growing sole traders, they also handle bookkeeping and year-round tax planning.
Do sole traders need an accountant?
Not legally: HMRC's online service allows self-filing. But most sole traders with income above £30,000–£40,000, VAT registration, or any complexity (vehicles, home office, equipment, employees) benefit from specialist help. The risk of under-claiming expenses or missing a VAT registration deadline typically costs more than the accountant.
How much does a sole trader accountant cost?
Sole trader accountancy fees depend on the return, records, VAT status, bookkeeping volume, software, and whether you need year-round support or only Self Assessment filing. RR Accountants confirms every fee in writing after a 30-minute call, once the scope is clear.
When should a sole trader incorporate to a limited company?
There is no single rule, but common triggers include: employer pension contributions or genuine profit sharing with a spouse (on full extraction in 2026/27, a single owner is usually better off as a sole trader, roughly level only at about £60,000 before extra company admin costs); planning to take on employees; wanting to separate personal and business liability; or needing to retain profits in the business. The decision should be modelled, not made generically. We assess the sole trader vs limited company question at every ACR for growing clients.
What expenses can a sole trader claim?
Common allowable expenses for sole traders include: office costs, travel and vehicles (business proportion), professional subscriptions, phone and internet (business proportion), marketing, professional fees (accountancy), training directly related to the business, and equipment. Each category has specific rules on what qualifies. We review every sole trader client's expense position at onboarding.
Do I need an accountant if I am self-employed?
You are not legally required to use one. You can register for Self Assessment and file your own return. An accountant helps most when your records are behind, you are near the VAT threshold, you have more than one income source, or you want a view on incorporating. We confirm the scope and fee in writing after a 30-minute call.
How do I register as a sole trader?
You register for Self Assessment with HMRC. If you have not sent a tax return before, you must tell HMRC by 5 October after the end of the tax year in which you started working for yourself, or you could get a penalty. Register online and HMRC gives you a Unique Taxpayer Reference, which appears in your personal tax account within 72 hours. You do not form a company to be a sole trader.
How much tax does a sole trader pay in 2026/27?
Income Tax is 20% on taxable income from £12,571 to £50,270, 40% from £50,271 to £125,140 and 45% above that, with a £12,570 Personal Allowance (Scottish bands differ). Sole traders also pay Class 4 National Insurance at 6% on profits between £12,570 and £50,270 and 2% above that. Class 2 is not payable once profits reach £7,105, and you may pay it voluntarily below that. The first £1,000 of self-employment income can be covered by the trading allowance.
Can you act as my self-employed accountant if I am not near an office?
Yes. We work with sole traders across the UK. Most engagement is online through Compliance Vault™, with optional in-person meetings at one of our UK offices where available.
Do sole traders have to use Making Tax Digital?
From 6 April 2026, sole traders and landlords whose qualifying income was over £50,000 on their 2024/25 return must use Making Tax Digital for Income Tax. The threshold falls to £30,000 from April 2027 and £20,000 from April 2028. Qualifying income is gross self-employment and property income before expenses. Quarterly updates are then sent through compatible software.
Ready to talk to a sole trader accountant?
Book a 30-minute call. We confirm whether we're a fit and tell you exactly what we'd do for your business.
Book a call →Iftikhar Rashid FCCA · 16 years · UK-wide