Small Business Accountants in London

A small business accountant manages all aspects of your business finances from bookkeeping and VAT returns to year-end statutory accounts, Corporation Tax, payroll, and HMRC compliance. At AccFirm, we go beyond basic compliance by providing proactive tax planning, cash flow management, and strategic financial advice throughout the year, helping you make informed decisions and reduce your overall tax liability.

The cost of a small business accountant in London varies depending on your business structure and the services required. As a guide, sole traders typically pay between £50 and £150 per month for a full-service accountant covering bookkeeping, VAT, and Self-Assessment. Limited companies with employees typically pay between £100 and £350 per month. AccFirm charges fixed monthly fees with everything included no hourly rates, no call charges, and no hidden costs. Contact us for a free, tailored quote.

While it is not a legal requirement, the vast majority of small business owners benefit significantly from working with a professional accountant. An accountant ensures you never miss an HMRC deadline, claims every allowable expense you are entitled to, reduces your Corporation Tax and Self-Assessment liabilities, and frees up your time to focus on running and growing your business. For most small businesses, an accountant saves more in reduced tax than the monthly fee costs.

Making Tax Digital (MTD) is HMRC’s programme requiring businesses to maintain digital financial records and submit returns using HMRC-approved software. MTD for VAT is already mandatory for all VAT-registered businesses. From April 2026, MTD for Income Tax Self Assessment (MTD for ITSA) will apply to sole traders and landlords with income above £50,000, with the £30,000 threshold following in April 2027. AccFirm ensures every client is fully MTD-compliant using Xero, QuickBooks, or FreeAgent included in your monthly package at no additional cost.

Yes. AccFirm uses fully legitimate HMRC-approved tax planning strategies to ensure every client pays only the minimum tax required by law. For limited companies this includes optimising your director salary and dividend structure, identifying R&D Tax Credits, maximising Annual Investment Allowance on capital expenditure, and planning capital gains tax efficiently. For sole traders we ensure every allowable expense is claimed and advise on pension contributions as a tax-efficient strategy.

Switching to AccFirm is completely straightforward. We manage the entire process contacting your previous accountant, obtaining all handover documents and records, completing HMRC agent authorisation, and migrating your accounting software data. Most clients are fully set up and operational within five working days. There is no disruption to your business during the transition.

AccFirm works with clients both in person and fully remotely. Our London office is available for face-to-face meetings, but the majority of our services are delivered digitally through cloud accounting software, secure client portals, email, and video calls. Many of our small business clients across London and the wider UK have never visited our office and they receive exactly the same level of service and support.

AccFirm works with small businesses across a wide range of industries including retail, hospitality, construction and CIS, professional services, creative and media, e-commerce, technology, healthcare, property and landlord investment, and many more. Our team has experience across multiple sectors and can provide industry-relevant advice on expenses, tax reliefs, and HMRC compliance specific to your business type.