Accountants for Startups in London
Starting a business in London means making important financial decisions from day one. Our accountants for startups in London help founders choose the right structure, set up accounting systems, manage tax obligations and build a sound financial foundation for growth.
Whether you are launching a new limited company, developing a technology startup or preparing for your first round of investment, our startup tax accountant provides practical advice without unnecessary complexity.
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)
Their expertise in payroll, PAYE, and Companies House filings has been outstanding. They respond quickly, explain everything clearly, and provide proactive tax-saving advice. I feel confident knowing my company finances are in expert hands.
John Doe
AK Solutions Ltd
Why Choose Us as Your London Startup Accountant?
A startup needs more than an accountant who prepares accounts once a year. Our startup accountants London service combines compliance with practical financial guidance throughout the year.
We can help with company formation, HMRC registrations, bookkeeping, tax returns, VAT, payroll, forecasting and ongoing tax planning. As your business develops, our support can develop with it.
Proactive Advice, Not Just Year-End Accounts
We look ahead at upcoming tax liabilities, cash-flow requirements and financial decisions. This gives you time to act rather than discovering problems after the year-end.
Support for Funding and Growth
If you are preparing for investment, we can help you organise financial records and understand relevant funding considerations, including SEIS and EIS where applicable.
“Need Professional Business Support?”
Let our experienced accountants handle the compliance and financial complexities while you focus on growing your business.
Build a Strong Financial Foundation for Your Startup
The right accounting setup gives you a clear view of your startup’s income, costs, cash flow and tax position from the beginning. Our accountants for startups help you establish reliable financial processes, choose suitable accounting software and keep your records ready for HMRC, investors and future growth.
As your business develops, we can support bookkeeping, payroll, VAT, Corporation Tax, management accounts and financial forecasting. You also get practical guidance on business structure, tax planning and funding decisions, so your accounts support growth rather than simply meeting compliance requirements.
Our Accounting Services for Startups in London
AccFirm delivers a full suite of accounting services built specifically around the needs of new and early-stage businesses in London. Every service is available as part of a fixed monthly package or as a standalone engagement.
We keep your income, expenses, invoices and bank transactions organised using cloud accounting software such as Xero or QuickBooks. For VAT-registered businesses, we can also support Making Tax Digital requirements.
We can guide you through choosing an appropriate structure and setting up your company with Companies House. We can also help with relevant HMRC registrations, including Corporation Tax, PAYE and VAT where required.
We prepare company accounts and Corporation Tax returns, including the CT600 where applicable. We also review the company’s tax position and discuss appropriate profit extraction and dividend planning.
Corporation Tax Returns (CT600)
We prepare your annual Corporation Tax return, claim all available deductions and reliefs, and file your CT600 with HMRC. We also advise on optimal profit extraction, dividend planning, and timing of expenditure to minimise your tax bill legally.
VAT Returns & Making Tax Digital
If your startup is VAT registered, we can manage VAT records and periodic returns using compatible software. HMRC requires VAT-registered businesses to keep relevant records digitally and submit VAT Returns using compatible software, subject to applicable exemptions.
As you begin hiring, we can manage payroll, PAYE reporting and related administration. We can also help with director remuneration and ensure payroll processes are maintained correctly.
“Need Professional Business Support?”
Let our experienced accountants handle the compliance and financial complexities while you focus on growing your business.
Our Step-by-Step Process for New London Businesses
We understand that engaging an accountant for the first time can feel daunting. AccFirm makes the process simple, transparent, and entirely stress-free. Here is exactly what happens when you get in touch:
Free Initial Consultation
We discuss your business idea, current position, expected income and financial goals. This gives us a clear understanding of the support your startup needs.
Tailored Proposal & Fixed Fee Quote
We recommend the services that match your requirements rather than adding unnecessary work. You receive a clear proposal and fee structure before proceeding.
Company Formation & Registration
If you are incorporating a new limited company, we manage the full Companies House filing. We then register your business with HMRC for Corporation Tax, PAYE, VAT (where applicable), and Self Assessment.
Cloud Accounting Setup
We set up your chosen accounting software (Xero, QuickBooks, or FreeAgent), configure bank feeds, chart of accounts, VAT settings, and invoice templates, and give you a guided walkthrough so you can monitor your finances in real time.
Ongoing Accounting, Tax & Compliance
We manage your agreed accounting responsibilities, including bookkeeping, accounts, tax returns, VAT and payroll. You receive reminders and support around important deadlines.
Proactive Advice Throughout the Year
We do more than process transactions. We review your financial position and provide advice that can help you manage tax, cash flow and the next stage of your startup's growth.
“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 for Startup Businesses
Starting a business involves more than keeping accurate accounts. Our startup accountants provide practical tax and accounting guidance from the early stages, helping you understand your tax obligations, manage business costs and make informed financial decisions as your company grows.
We can review your business structure, allowable expenses, Corporation Tax, VAT, payroll and available tax reliefs based on your circumstances. Whether you are launching your first business or preparing for expansion, our startup tax accountant provides ongoing support designed around your goals, with clear advice and transparent fees.
Tax Advice and Planning for London Startups
Good tax planning starts before the tax deadline. Our startup tax accountant reviews your business structure, expenses, profits and future plans to identify legitimate ways to manage your tax position.
Pre-Trading Expenses
Certain costs incurred before your business starts trading may qualify for tax purposes, depending on the nature and timing of the expense. We can review your startup costs and identify relevant claims.
Capital Allowances
Where your business purchases qualifying equipment or assets, we can review whether capital allowances or other available reliefs may apply.
Pension Planning
We can discuss pension contributions as part of your wider personal and business tax planning, subject to your circumstances and the applicable pension rules.
VAT Scheme Review
If your business is VAT registered, we can review the appropriate VAT treatment and accounting approach for your circumstances rather than assuming one scheme suits every startup.
Onboarding & Account Switching Process
Switching accountants does not need to interrupt your business. We first review your current accounting records, tax position, software and outstanding compliance requirements to identify anything that needs attention.
Once you appoint us, we can coordinate the handover with your previous accountant and obtain the relevant records and information. Our aim is to manage the transition with minimal disruption so you can continue running your startup.
Still Have Questions?
If you’d like to learn more about our accounting services or discuss your business requirements, our friendly team is ready to answer your questions.
info@accfirm.co.uk
Faqs about Accountants for Startups in London
Do I need an accountant for my startup in London?
While it is not a legal requirement, having a qualified accountant from day one helps new London businesses avoid costly HMRC penalties, structure their affairs tax-efficiently, and comply with Making Tax Digital requirements. The cost of professional accounting is almost always outweighed by the tax savings and penalties avoided particularly in the critical first year of trading.
How much does a startup accountant cost in London?
Startup accounting fees in London vary significantly between firms. At AccFirm, we charge fixed monthly fees based on the services you require from basic bookkeeping and corporation tax through to full payroll, VAT, R&D claims, and SEIS/EIS applications. All fees are quoted transparently before any work begins. You will never receive an unexpected invoice.
When should I register my startup with HMRC?
You must register with HMRC for Corporation Tax within three months of starting to trade. For limited companies, registration with Companies House must occur before trading begins. VAT registration is required once your taxable turnover exceeds £90,000 in any rolling 12-month period. PAYE registration is required before you make your first salary payment. AccFirm manages all HMRC and Companies House registrations on your behalf, ensuring every deadline is met.
What is the difference between a sole trader and a limited company for a startup?
A sole trader structure is simpler and has fewer compliance obligations you report profits through Self Assessment and pay Income Tax and Class 4 National Insurance. However, you have unlimited personal liability for business debts. A limited company provides limited liability protection and is typically more tax-efficient once annual profits exceed approximately £30,000, as you can draw a combination of salary and dividends. Limited companies must file annual accounts with Companies House and submit a Corporation Tax return. AccFirm advises every startup on the best structure for their specific circumstances including projected income, funding plans, and risk profile.
Can AccFirm help with SEIS and EIS applications for my London startup?
Yes. AccFirm assists London startup businesses in applying for Seed Enterprise Investment Scheme (SEIS) and Enterprise Investment Scheme (EIS) advance assurance from HMRC. SEIS allows investors to claim up to 50% income tax relief on investments of up to £200,000, making your startup significantly more attractive to angel investors. EIS supports larger fundraising rounds of up to £5 million with 30% investor income tax relief. We prepare and submit all HMRC applications and ensure your startup meets the ongoing eligibility requirements.
What is Making Tax Digital and does it affect my startup?
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 London startup clients are fully MTD-compliant using Xero, QuickBooks, or FreeAgent from the very start of their business at no additional cost.
Can AccFirm help me claim R&D Tax Credits as a London startup?
Yes. If your startup 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 HMRC’s R&D Tax Credits. This relief can result in a significant cash repayment or reduction in Corporation Tax. AccFirm prepares R&D claims for London startup clients across a wide range of industries. Many founders are surprised to discover their business qualifies contact us for a no-obligation eligibility assessment.
What accounting software does AccFirm use for startup clients?
AccFirm is a certified adviser for Xero and QuickBooks, and also supports FreeAgent and Sage. For most London startup clients, we recommend Xero for its intuitive interface, strong bank feed integration, and MTD-compatible architecture. We set up and configure your software as part of your onboarding and provide ongoing support throughout your engagement with us.