Company accounts and Corporation Tax, done and dusted
We prepare your year-end accounts, file them at Companies House, and handle your Corporation Tax return with HMRC, accurately and on time. You get clear numbers, a smaller tax bill where we can find it, and no last-minute panic.
Reviewed July 2026. Figures are correct at the date of review. Always check GOV.UK for the latest.
What it is
Every year, a limited company has to prepare statutory year-end accounts, file them at Companies House, and submit a Corporation Tax return (the CT600) to HMRC showing the tax due on its profits. It's the core compliance job that keeps your company in good standing.
Who needs it
Every UK limited company, trading or dormant, profit or loss. If you run a company, these filings are not optional, and the responsibility sits with you as a director. We take that weight off you.
Common mistakes
- Leaving it until the deadline and rushing (or missing it and taking a penalty)
- Under-claiming allowable expenses, capital allowances and reliefs
- Treating tax as a year-end surprise instead of planning for it
- Accounts and the tax return that don't reconcile with each other
How Xpert helps
We prepare and file both your accounts and your Corporation Tax return, calculate the tax correctly (at 19% on small profits and 25% on main-rate profits, with marginal relief in between) and plan proactively to keep the bill as low as legitimately possible. One dedicated accountant, fixed monthly fee, answers within three hours.
Works with your software
We're proficient across all the major accounting platforms (Xero, QuickBooks, Nomisma, Sage, FreeAgent and more), so you can keep the software you already use. Nomisma is included as standard on Professional and Growth+.
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Frequently asked questions
Common questions about company accounts and Corporation Tax.
Do I have to file accounts if my company made no profit?+
Yes. Every limited company must file annual accounts at Companies House and a Corporation Tax return with HMRC each year, even if you made a loss or the company is dormant. We handle both.
What rate of Corporation Tax will I pay?+
Corporation Tax is charged at 19% on small profits and 25% on main-rate profits, with marginal relief tapering between the two. Which applies depends on your profits (and any associated companies). We calculate it correctly and look for ways to bring it down.
Can you reduce my Corporation Tax bill?+
Often, yes: by making sure you claim every allowable expense and relief you're entitled to and planning ahead rather than reacting at year end. We'll tell you what's available for your business.
Do you file at both Companies House and HMRC?+
Yes. We prepare your statutory accounts, file them at Companies House, and submit your Corporation Tax return (CT600) to HMRC, so it all lines up and nothing is missed.
What happens if I miss a deadline?+
Late filing and late payment both trigger penalties and interest. We track your deadlines and prepare everything ahead of time so you don't get caught out, and if you're already behind, we help you catch up.
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