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Professional Accounting & Tax Services Across the UK
AccFirm provides a complete range of accounting, tax, and advisory services for UK businesses and individuals. From day-to-day bookkeeping and payroll to strategic tax planning and company formation everything your business needs, under one roof, at a fixed monthly fee.
- Fixed, transparent fees — quoted in writing before any work begins
- Dedicated named accountant assigned to every client
- Full Making Tax Digital (MTD) compliance — Xero & QuickBooks certified
- HMRC registered agent — we deal with HMRC directly on your behalf
- Serving sole traders, limited companies, startups, landlords & SMEs across the UK
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What Customers say after using our Services
Many of our Customers have started their early careers with Firm
We’ve been working with this accounting team for over two years, and the difference has been incredible. From bookkeeping and VAT returns to corporation tax planning, everything is handled efficiently and on time. They keep us fully compliant with HMRC while helping us improve cash flow and profitability. I highly recommend their services to any business owner.
Sarah Thompson
Thompson Retail Ltd
As a contractor under the Construction Industry Scheme (CIS), I needed accountants who truly understand HMRC requirements. They managed my CIS registration, monthly returns, and self-assessment without any stress. Their guidance saved me both time and money. Professional, reliable, and always available when needed
James Patel
Self-Employed Contractor (CIS)
As a contractor, managing taxes and expenses can be complicated. Their support with self-assessment and bookkeeping has saved me time and reduced my tax stress. Everything is explained clearly, and the service is always prompt and professional
Daniel Carter
Freelancer & Contractor
“Need Professional Business Support?”
Let our experienced accountants handle the compliance and financial complexities while you focus on growing your business.
Company Accounts Preparation Across the UK
Preparing accurate statutory accounts is one of the most important annual obligations for every UK limited company. Your accounts must comply with UK GAAP (either FRS 105 for micro-entities or FRS 102 for small companies), be filed with Companies House within nine months of your financial year end, and submitted to HMRC alongside your Corporation Tax return.
AccFirm prepares statutory annual accounts for private limited companies, LLPs, and sole trader businesses across the United Kingdom ensuring every set of accounts is accurate, compliant, and filed on time.
Our company accounts preparation service includes:
- Developing a thorough understanding of your business, sector, and financial position
- Preparing full statutory accounts in compliance with UK GAAP (FRS 105 or FRS 102)
- Filing accounts with Companies House before the nine-month deadline
- Preparing and submitting your Corporation Tax return (CT600) to HMRC
- Providing constructive commentary on your financial performance
- Identifying tax-saving opportunities ahead of submission
- Answering questions from shareholders, directors, or lenders about the accounts
At the end of each financial year, your dedicated AccFirm accountant will review your accounts with you, explain the key figures in plain English, and advise on any actions to take before your next financial year begins.
Our Comprehensive Accounting Services for Everyone
Our expert team delivers personalized services for individuals, small businesses, and large enterprises across the UK
We provide accurate and reliable bookkeeping services to keep your financial records up to date. From daily transaction recording to bank reconciliations and expense tracking, we ensure your accounts are organised and compliant with HMRC requirements.
Limited Company Accounting
Running a limited company requires strict compliance with Companies House and HMRC. We handle annual accounts, confirmation statements, corporation tax returns, and ongoing financial reporting so you can focus on growing your business.
Self-Assessment Tax Returns
We prepare and submit self-assessment tax returns for sole traders, directors, landlords, and high-income individuals. Our team ensures accurate calculations, maximises allowable expenses, and helps you avoid HMRC penalties.
Corporation Tax Services
Our corporation tax services include CT600 preparation, tax calculations, and strategic tax planning. We help limited companies reduce liabilities while remaining fully compliant with UK tax regulations.
VAT Returns & Making Tax Digital
We manage VAT registration, VAT return submissions, and full Making Tax Digital compliance. Whether you operate standard, reduced, or flat rate VAT schemes, we ensure accurate reporting and timely filing.
Payroll & PAYE Services
Our payroll services include salary processing, payslip generation, RTI submissions, pension auto-enrolment, and PAYE management. We ensure your employees are paid correctly and on time.
“Need Professional Business Support?”
Let our experienced accountants handle the compliance and financial complexities while you focus on growing your business.
The AccFirm Process
Every AccFirm client goes through the same rigorous onboarding and service process ensuring nothing is missed, every deadline is met, and your finances are always in order.
Initial Consultation & Needs Assessment
We begin with a free, no-obligation consultation by phone, video call, or in person. We take time to understand your business, your current financial position, any outstanding HMRC obligations, and what you need from an accounting practice. No pressure, no commitment.
Fixed Fee Proposal
Within 24 hours of your consultation, we provide a clear written proposal setting out exactly which services we recommend and the fixed monthly fee for each. You will always know precisely what you are paying before any work begins. No hourly rates. No surprises.
Onboarding & Cloud Accounting Setup
Once you confirm you would like to proceed, we contact your previous accountant (if applicable), obtain all outstanding records, and manage the professional handover. We set up your Xero, QuickBooks, or FreeAgent account, connect your bank feeds, and ensure your bookkeeping is current and MTD-compliant from day one.
HMRC Registrations & Compliance Setup
We complete all required HMRC registrations on your behalf Corporation Tax, PAYE, VAT, Self Assessment and ensure Companies House records are accurate and up to date. We take over as your authorised HMRC agent, meaning we can communicate directly with HMRC on your behalf.
Ongoing Compliance & Year-Round Support
Your dedicated AccFirm accountant manages your full compliance calendar throughout the year VAT returns, payroll, management accounts, year-end statutory accounts, Corporation Tax, and Self Assessment ensuring every deadline is met and every return is accurate. We are available to answer questions and provide advice whenever you need us.
Proactive Tax Planning & Annual Review
At least once a year and more frequently for clients with complex affairs we conduct a full tax efficiency review. We identify opportunities to reduce your tax liability, advise on dividend planning, flag any changes in UK tax legislation that affect you, and ensure your business remains structured optimally as it grows.
What Our Tax Planning Service Covers
- Corporation Tax planning — identifying all allowable deductions, capital allowances, and reliefs before your CT600 is prepared
- Personal tax planning — optimising salary, dividends, and pension contributions for directors and shareholders
- Capital Gains Tax planning — timing of asset disposals to maximise the annual exempt amount and available reliefs
- Inheritance Tax planning — structuring your estate and business interests tax-efficiently
- Pre-transaction planning — advice on tax implications before a business sale, acquisition, or restructure
- Property tax planning — Section 24 guidance, CGT on disposal, and incorporation advice for landlords
- R&D Tax Credits — identifying qualifying expenditure and preparing claims
- SEIS and EIS — helping startup founders and investee companies access investor tax relief schemes
Our team keeps fully up to date with every HMRC regulation change, Finance Act update, and Autumn Statement announcement so your business always benefits from the latest available reliefs and allowances. We do not believe in paying more tax than the law requires. Neither should you
“Need Professional Business Support?”
Let our experienced accountants handle the compliance and financial complexities while you focus on growing your business.
Tax Advice and Planning
Managing taxes effectively is essential for every business and individual in the UK. Our experienced tax advisers work closely with our accountants to identify potential issues early and ensure your finances remain fully compliant with HMRC regulations.
By planning ahead and monitoring important deadlines, we help you avoid unexpected tax liabilities and reduce the risk of costly penalties. Our proactive tax planning strategies are designed to ensure you pay the right amount of tax not more than necessary. Whether it’s corporation tax, personal tax, or business tax planning, we help you remain tax-efficient while staying fully compliant with UK tax laws.
Our team keeps up to date with the latest HMRC regulations and tax changes, allowing us to provide practical advice that helps you manage your finances with confidence throughout the year.
AccFirm Solutions for Your Business
A reliable and dedicated financial partner providing professional accounting, tax planning, and compliance services to help businesses manage finances efficiently and achieve long-term growth.
Independent Audit Services
Our independent audit services ensure your financial statements are accurate and compliant. We review records, identify risks, and improve financial transparency, helping build confidence with investors, lenders, and stakeholders.
Thinking About Switching Accountants?
Switching accountants is simple with our expert support. We manage the entire process, including contacting your previous accountant and transferring records securely, ensuring a smooth transition without disrupting your business operations.
AccFirm Services
Sole Trader
Limited Company
Self-Assessment Tax Return
Payroll & PAYE
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Need reliable accountants for your business? Our experienced team is ready to help with tax planning, compliance, and financial advice. Contact us today to discuss your needs and grow your business with confidence.
Frequently Asked Questions
What is Making Tax Digital and how does it affect my business?
Making Tax Digital (MTD) is HMRC’s programme to require all businesses and individuals to maintain digital financial records and submit returns using HMRC-approved software. MTD for VAT is already mandatory for all VAT-registered businesses. MTD for Income Tax Self Assessment (MTD for ITSA) is being phased in from April 2026, starting with self-employed individuals and landlords earning over £50,000. AccFirm ensures all clients are fully MTD-compliant from day one using Xero, QuickBooks, or FreeAgent.
Can AccFirm help me claim R&D Tax Credits?
Yes. If your business is carrying out qualifying Research and Development activity developing new products, processes, software, or making meaningful improvements to existing technology you may be eligible for a significant HMRC cash repayment or Corporation Tax reduction. AccFirm prepares R&D claims for UK businesses across a wide range of sectors. Contact us for a free, no-obligation eligibility assessment.
How does switching to AccFirm from my current accountant work?
Switching is straightforward and entirely managed by AccFirm. We contact your previous accountant, request all outstanding files and records, update your HMRC authorisations, and ensure your accounting software is migrated or set up correctly. You will not need to chase anyone. Most clients are fully onboarded within 5–10 working days of confirming they wish to proceed.
Do you work with businesses outside London?
Yes. While AccFirm serves a significant number of London-based clients particularly startups and limited companies in the capital we work with businesses across the whole of the United Kingdom. Our services are delivered digitally through cloud accounting software, video calls, and secure client portals, meaning location is never a barrier to receiving expert accountancy support.