Year-end accounts & corporation tax — filed on time, no surprises
Statutory accounts to Companies House and your corporation tax return to HMRC, prepared by a Chartered Accountant, with every allowance you're entitled to claimed — so you stay compliant and never pay more tax than you should. Included in every package from £180 a month.
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Statutory year-end accounts prepared & filed at Companies House
Corporation tax computed and filed correctly with HMRC
Accounts tagged in the digital format HMRC requires
Every Companies House and HMRC deadline tracked for you
When are company accounts and corporation tax due?
For a private company, first accounts are due at Companies House the later of 21 months after incorporation or three months after the accounting reference date; thereafter nine months from each year end. Corporation tax is payable nine months and one day after the period ends, with the CT600 filed within twelve months — payment falls due before the return.
Correct for the 2026/27 tax year · last reviewed September 2026 · Chris Sullivan ACA
What's included in your year-end
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.
AnnualCorporation 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.
HMRCiXBRL 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.
ComplianceCompanies House filing
We file your accounts and your annual confirmation statement, keeping your company's public record accurate, current and penalty-free.
FilingDeadlines, 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.
Deadlines MetTax-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 on them.
Tax SavingsAccounts & 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) unless specifically agreed otherwise. View full package details →
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.
- Statutory accounts prepared & filed
- Corporation tax calculation & CT600 submission
- Confirmation statement filing
- Director's payroll (1 employee)
- Xero subscription included (unless agreed otherwise)
- Statutory accounts & corporation tax
- Quarterly VAT returns
- Monthly bank reconciliation (up to 150 transactions)
- Payroll for up to 5 employees
- Advanced Xero
- Statutory accounts & corporation tax
- Full bookkeeping & transaction processing
- Monthly management accounts
- Strategy & tax review meetings
- Unlimited phone support
All prices exclude VAT.
Why Lumi for your year-end
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, in everyday language, without 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, and no year-end invoice shock.
Accounts & corporation tax, explained
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.
Related guides
Clear, jargon-free reads on getting the most out of your year-end.
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.
