Year-End Accounts & Corporation Tax — Winchester

Company accounts & corporation tax, done properly

Every limited company has to file statutory accounts with Companies House and a corporation tax return with HMRC each year. We prepare both — accurately, on time, and with every allowance and deduction you're entitled to — so you stay compliant and never pay more tax than you should.

Prefer to talk? Call 01962 435112

Accounts

Statutory year-end accounts prepared & filed at Companies House

CT600

Corporation tax computed and filed correctly with HMRC

iXBRL

Accounts tagged in the digital format HMRC requires

On time

Every Companies House and HMRC deadline tracked for you

What's Included

Everything your year-end needs — in one place

Your accounts and corporation tax return are prepared together, by a Chartered Accountant, with nothing left for you to chase or second-guess.

Statutory annual accounts

Full preparation of your year-end accounts in the correct statutory format — FRS 105 for micro-entities or FRS 102 Section 1A for small companies — ready to file at Companies House.

Annual

Corporation tax (CT600)

We calculate your corporation tax, prepare and file the CT600 return with HMRC, and tell you exactly how much to pay and when — no nasty surprises near the deadline.

HMRC

iXBRL tagging

Your accounts and tax computations are tagged in the iXBRL format HMRC requires — handled entirely by us, with no special software needed at your end.

Compliance

Companies House filing

We file your accounts and your annual confirmation statement, keeping your company's public record accurate, current and penalty-free.

Filing

Deadlines, handled

We track every Companies House and HMRC date for you and prepare well ahead — so a missed filing penalty is one thing you'll never have to think about.

Peace of Mind

Tax-efficiency review

More than box-ticking. We look for allowances, reliefs and a salary/dividend mix that legitimately lower your bill, and flag planning points before your year-end, while there's still time to act.

Tax Savings
Included in Every Package

Accounts & corporation tax come as standard

Year-end accounts and your corporation tax return are included in every Lumi package — from Lite upward. What changes between tiers is the bookkeeping, VAT and advisory support that surrounds them.

All packages include a Xero subscription (our recommended software). View full package details →

Worth knowing

Because we keep your bookkeeping current through the year, your year-end isn't a frantic scramble — the accounts almost prepare themselves, and we have time to plan rather than just file.

Lite
The Lite Package
from£120/month
Accounts & Tax Included
  • Statutory accounts prepared & filed
  • Corporation tax calculation & CT600 submission
  • Confirmation statement filing
  • Director's payroll (1 employee)
  • Xero subscription included
Book a call
Complete
The Complete Package
from£250/month
Everything in Core, plus
  • Statutory accounts & corporation tax
  • Full bookkeeping & transaction processing
  • Monthly management accounts
  • Strategy & tax review meetings
  • Unlimited phone support
Book a call
Why Lumi

A Chartered Accountant in your corner

You deal directly with a qualified ICAEW Chartered Accountant — not a call centre or a different junior every year.

ICAEW Chartered & qualified

Your accounts are prepared and reviewed by a Chartered Accountant — the gold standard for technical accuracy and trust.

Plain English, always

We explain what your numbers mean and what to do about them — no jargon, no acronym-soup, no pretending it's more complicated than it is.

Deadlines never missed

We work to your dates well in advance and chase what we need from you, so late-filing penalties simply don't happen.

Fixed monthly fee

Your accounts and tax are part of one transparent monthly fee — no hourly billing, no year-end invoice shock.

What Clients Say

Trusted by Hampshire businesses

★★★★★

"Chris was brilliant. He helped me fix some messy VAT issues right at the start and has been incredibly responsive ever since. I really appreciated the useful advice on the next steps for my business. Proactive, professional, and highly recommended!"

Ben Verified Google Review
★★★★★

"Lumi were the only accountancy that consistently provided me with timely responses to enquiries and questions enabling me to make effective business decisions quickly. They make completing accounts simple from an owner's perspective who needs to focus on running and growing the business."

Lee Spicer Verified Google Review

Read our reviews on Google →

Questions

Accounts & corporation tax, explained

Statutory (or annual) accounts are the formal financial statements every UK limited company must prepare each year — typically a balance sheet, profit and loss account and supporting notes. A version is filed at Companies House and the full set, with computations, supports your corporation tax return to HMRC.
Accounts are usually due at Companies House 9 months after your financial year-end. For most small companies, corporation tax is payable 9 months and 1 day after year-end (larger companies with profits over £1.5m pay by quarterly instalments), and the CT600 return is due 12 months after year-end. We track every one of these dates for you and file well ahead of them.
There's no legal requirement to use an accountant, but limited company accounts must follow strict accounting standards (FRS 105 or FRS 102) and be tagged in iXBRL format for HMRC. A qualified accountant makes sure they're correct, compliant and as tax-efficient as legitimately possible — and takes the deadline risk off your plate. Book a free call to talk it through.
Your accounts report what your company earned and owns over the year. Your corporation tax return (CT600) calculates the tax due on those profits, after adjustments and reliefs. They're prepared together — the accounts feed the tax computation — which is why we handle both as one job.
Dormant companies still have to file (simplified) accounts and a confirmation statement, and micro-entities can use the simpler FRS 105 standard and file reduced (filleted) accounts. We prepare the right type of accounts for your company's size and activity — you don't need to work out which regime applies.
Get Started

Ready to take year-end off your plate?

Book a free 30-minute call. We'll talk through your company, your year-end and how we can make accounts and corporation tax the easy part.

Further Reading

Related guides

Plain-English reads on getting the most out of your year-end.

Capital allowances: don't leave tax relief in the yard Salary vs dividends: how to pay yourself in 2026/27

Figures, thresholds and deadlines on this page reflect UK rules current at the time of writing and are general information, not advice for your specific circumstances. Please get in touch before acting.