Choose the right structure
Compare operating as a sole trader, partnership or private limited company. A limited company is legally separate from its owners, but directors take on statutory filing, record-keeping and tax responsibilities.
Starting a business · UK founder guide
Starting a New Business in the UK: A Founder’s 2026 Guide
A practical guide to UK limited company formation, Companies House registration, Corporation Tax, VAT, PAYE, payroll, bookkeeping, Xero and startup funding—written for founders who want to build correctly from day one.
Business formation checklist
What do you need to start a business in the UK?
Launching a company involves more than registering a name. Founders need a suitable legal structure, accurate Companies House records, tax registrations, reliable bookkeeping, cash-flow controls and a plan for payroll, VAT and funding.
Register the company
Confirm the company name, registered office, directors, shareholders, people with significant control, SIC code, articles and statement of capital before filing with Companies House.
Build the finance system
Open a business bank account, establish a chart of accounts, connect Xero bank feeds, define expense policies and schedule monthly reconciliations before transaction volume grows.
Companies House
UK limited company formation and director responsibilities
Company registration creates ongoing legal duties. Directors must keep appropriate company and accounting records, file confirmation statements and annual accounts, report changes accurately and ensure the company meets its tax obligations.
Registration information
Prepare the registered office, registered email, director details, share ownership, PSC information and business activity code. Your registered office becomes public, so founders should choose it carefully.
Share structure
Think beyond issuing a single ordinary share. Founder ownership, future investment, option pools and SEIS/EIS plans can all be affected by early share decisions and paperwork.
Compliance calendar
Track statutory accounts, Corporation Tax, confirmation statements, VAT returns, payroll submissions and pension duties in one clear deadline system.
For the official formation requirements, review the GOV.UK limited company setup guidance.
Tax registrations
Corporation Tax, VAT, PAYE and payroll for a new company
Corporation Tax
Notify HMRC when the company begins trading, maintain records that support taxable profit and plan for the filing and payment dates. Use our UK Corporation Tax calculator for an initial estimate.
VAT registration
Monitor taxable turnover and consider voluntary VAT registration where it supports pricing, cash flow or customer expectations. Get help with VAT registration and MTD-compliant returns.
PAYE and pensions
Register as an employer before the first payroll when required, operate RTI correctly and assess workplace pension duties. Our payroll and pension service keeps monthly obligations organised.
Cloud accounting
Set up bookkeeping on Xero before poor data becomes expensive
Good startup bookkeeping supports cash visibility, VAT, Corporation Tax, R&D claims and fundraising. A clean Xero setup should include bank feeds, an appropriate chart of accounts, receipt capture, invoicing, payment workflows, user permissions and a reliable monthly close.
Decision-ready records
Reconciled records help founders understand cash, margins, burn and runway instead of waiting for year-end accounts.
Investor-ready reporting
Funders expect numbers that reconcile to bank activity and explain revenue, costs, liabilities and ownership clearly.
Scalable processes
Document approvals, expenses and month-end responsibilities early so the finance function can support more people and transactions.
Funding and tax relief
Prepare for SEIS, EIS, R&D tax relief and investment
Early financial choices influence later fundraising. Founders should protect evidence for qualifying R&D work, maintain accurate share records, understand SEIS/EIS timing and keep forecasts aligned with the company’s hiring and product roadmap.
SEIS and EIS
Advance assurance, qualifying-company conditions, share terms and compliance statements need coordinated legal, tax and financial records. Explore our SEIS/EIS support.
R&D tax credits
Record technical uncertainties, project activity and qualifying costs while the work is happening. Learn about R&D tax relief for technology businesses.
Cash-flow forecasting
Model hiring, product spend, tax payments and funding milestones across realistic scenarios. Strong forecasts make investor conversations more credible.
Avoidable mistakes
Common accounting mistakes made by new UK businesses
- Mixing personal and company spending
- Waiting until year end to reconcile accounts
- Missing VAT, payroll or Companies House deadlines
- Using an unsuitable share structure before investment
- Failing to retain evidence for R&D tax claims
- Hiring without modelling salary, employer taxes and pension costs
- Confusing profit with available cash
- Ignoring associated-company or international tax considerations
Starting a business FAQs
Questions UK founders ask before incorporation
Do I need an accountant to start a limited company?
You can register a company yourself, but early accounting advice can prevent avoidable issues with shares, tax registrations, payroll, VAT, bookkeeping and funding-readiness.
When should a new company register for Corporation Tax?
A company must tell HMRC when it becomes active and begins carrying on business. The correct timing depends on the company’s facts and activities.
Should a startup register for VAT voluntarily?
Voluntary registration may help where customers are VAT-registered or input VAT is significant, but it adds reporting obligations and can affect pricing. Model the commercial impact first.
What accounting software is suitable for a UK startup?
Xero is widely used for cloud bookkeeping, invoicing, bank reconciliation, VAT and management reporting. The setup matters as much as the software choice.
How much cash should a startup keep?
There is no universal figure. Build a rolling cash-flow forecast covering operating costs, payroll, tax, hiring and realistic funding assumptions, then set a minimum cash threshold.
Can Price & Accountants help international founders create a UK entity?
Yes. We support incorporation, VAT, payroll, bookkeeping and ongoing compliance for international groups. See our US to UK expansion guide.
Startup accountants London
Build the company on a finance foundation designed to scale.
Price & Accountants supports UK founders from incorporation through fundraising and growth with company accounts, Corporation Tax, Xero bookkeeping, VAT, payroll, R&D tax relief, SEIS/EIS and fractional finance leadership.