Limited Company Tax | Barton Accountancy

Corporation tax

Pay what you owe. Not a penny more.

Corporation tax is a fixed percentage of your taxable profit — 19% below £50k, 25% above £250k, with a marginal rate in between. On the surface, there's nothing to plan for. In practice, taxable profit and accounting profit can be quite different, and every legitimate adjustment matters.

We prepare your CT600 with full attention to capital allowances, R&D reliefs where applicable, trading losses, director pension contributions and every other legitimate way to reduce your tax bill. Pre year-end reviews are standard.

What's included

Full corporation tax service.

Everything is included in your fixed monthly fee. No extras, no surprises.

CT600 preparation

Full computation, reviewed, filed on time.

Capital allowances

Full expensing, AIA, super-deduction — every relief claimed.

Loss relief planning

Current, back-carried or forward-carried losses — whichever works best.

R&D claims (where eligible)

If you qualify for R&D relief, we'll tell you and manage the claim.

Pre year-end tax planning

Quarterly review and a formal planning call before year-end.

HMRC enquiries

If HMRC investigate, we handle the entire correspondence.

Sound familiar?

Most businesses don't have an accountant.
They have a filing service.

If any of these ring true, you're not getting what you should be.

01

You only hear from them at year-end

No check-ins, no planning, no conversation. Just a bill and a set of accounts you don't fully understand.

02

You're never sure where you stand

Your numbers are months out of date. You're making decisions based on gut feel, not real figures.

03

Surprise invoices keep landing

An email here, a phone call there — and suddenly your bill is twice what you expected. No one told you.

Common questions

Things people ask us.

What's the corporation tax rate in 2025/26?

19% on profits up to £50k. 25% on profits from £250k. Between those thresholds, a marginal rate applies (effectively 26.5%) which averages out to the higher figure. Plus the usual deductions and allowances.

When is my corporation tax due?

CT is due 9 months and 1 day after your year-end. The CT600 return is due within 12 months of year-end. We file everything well before the deadline.

What if HMRC open an enquiry?

We handle it. From the initial letter through to final settlement, we manage the correspondence and represent you. No extra fees.

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