Corporation Tax Returns for Limited Companies
Your CT600, filed accurately on time, every time.
Every limited company owes a corporation tax return nine months after its year end. Miss the deadline and HMRC charges penalties before you have even opened the letter. DG Accountancy handles the full CT600 filing on a fixed monthly fee — prepared by an ACCA-qualified accountant with 20 years of experience across multiple sectors, with questions answered the same day you ask them.
- CT600 prepared, checked and filed before the HMRC deadline
- Your tax liability calculated clearly, months before it is due
- Allowable deductions reviewed so you are not paying more than necessary
- Plain-English summary of what you owe and why, every year
No long-term contract. If it is not working after three months, you leave with your filings up to date and nothing owed.
Get a free fixed-fee quote
Fixed pricing. Same-day reply.
What our clients say
★★★★★
Turned Everything Around for Tight Deadline
“Daniel was extremely responsive, clear, and professional throughout. He understood exactly what the lender required, turned everything around very quickly without cutting corners.”
★★★★★
Every Detail Explained, Nothing Left Unclear
“He is the most amazing person, very professional, explaining every detail meticulously in order to finalise our accounts. A huge thank you Daniel.”
★★★★★
Patient When the Client Had No Clue
“Daniel was very helpful and patient with me when I had no clue what to do and spoke through everything with me and made it clear, couldn’t recommend him enough, thank you again.”
★★★★★
Accounts Done Every Year Without Worry
“This company does my accounts every year and i never have to worry about it. Speedy as well. I am a very happy customer.”
Sound familiar?
Still not sure what your tax bill is going to be this year?
Most limited company directors know corporation tax exists but not exactly when it is due, what the calculation looks like, or whether they have claimed everything they are entitled to. The CT600 deadline sits nine months after your accounting year end — which means it can creep up quietly. By the time HMRC sends a reminder, the deadline has often already passed.
- No clear figure for what corporation tax is owed until the last minute
- Uncertainty about which expenses and allowances reduce your taxable profit
- Filing deadlines missed or approached in a rush, with penalty risk growing
What a well-run CT600 process looks like
Your accounts close, the numbers are reviewed, allowances are applied correctly, and your CT600 lands with HMRC well ahead of the deadline. You know the liability months in advance and can plan cashflow accordingly. Which is, frankly, how it should work.
- Your tax liability calculated clearly and communicated months before it falls due
- All legitimate deductions and capital allowances reviewed as a matter of course
- CT600 filed with HMRC and accounts lodged at Companies House before the deadline
- Fixed monthly fee agreed upfront — no bill arriving as a surprise after year end
What limited company clients say about us
From first-year directors to established businesses, clients come to DG Accountancy for accuracy, responsiveness and plain-English explanations of exactly where they stand.
Absolutely recommend Daniel for all and any accounts related matter. Would use his expertise again. He is the most amazing person, very professional, explaining every detail meticulously in order to finalise our accounts. A huge thank you Daniel.
Professional service. This company does my accounts every year and i never have to worry about it. Speedy as well. I am a very happy customer.
What is covered in the corporation tax service
The CT600 filing is prepared alongside your year-end accounts, with all relevant reliefs reviewed and your liability communicated clearly before payment is due.
CT600 Return and Companies House Filing
Your corporation tax return is prepared from your year-end accounts and filed with HMRC on time. Statutory accounts are lodged at Companies House in the same process, so both obligations are met in a single, coordinated exercise. You will not need to chase two separate deadlines with two separate providers.
Included as standardYour Tax Liability, Calculated Early
The tax bill is calculated and communicated clearly as soon as the year-end accounts are finalised — not the week before the payment deadline. That gives you enough time to plan cashflow and set funds aside without scrambling. Capital allowances, director’s loan account positions and available reliefs are reviewed as part of the preparation.
Included as standardProactive Review of Allowances and Reliefs
Corporation tax is not simply a matter of applying the rate to profit. Allowances, timing differences, R&D credits and relief elections can all affect what you actually pay. These are reviewed each year as a matter of course, not as an optional extra. If there is a meaningful relief you have not claimed, you will hear about it.
Reviewed annuallyConsistently rated 5.0 across every review
Eight verified reviews, all five stars. Clients range from sole traders filing their first return to limited company directors with more complex annual filings.
Tax Knowledge Saved Money on Expenses
“Daniel was very helpful with my books and tax return. He offered great advise and insight in how to manage my books better and more efficiently. His knowledge in tax law and what can be used for expenses really helped with saving money where I could.”
Took the Entire Tax Burden Off Us
“Huge thanks to Daniel for helping ourselves with our taxes! Being self employed means we all have to do this ourselves which is just not possible on top of our work load. Thanks again! We will be using you again!”
Fast, Efficient and Friendly Throughout
“Excellent service providing financial accounts for probate. Quick, efficient and friendly. Would highly recommend.”
What makes the difference on a CT600
Filing a corporation tax return is straightforward when the books are in order, the deadlines are tracked and someone experienced is reviewing the numbers. Here is what that looks like in practice.
Twenty Years of Cross-Sector Returns
Daniel has prepared accounts and tax returns across airlines, construction, manufacturing and entertainment. The range of industries means unusual income streams, complex allowances and mixed trading activities are not obstacles — they are familiar territory. You will not be the first client with a complicated year.
Your Deadline Is Tracked, Not Your Problem
The CT600 deadline is nine months after your accounting period ends. That varies by company and is easy to lose track of when you are running a business. DG Accountancy monitors the filing calendar and works to a schedule that has your return filed comfortably in advance, not at the last moment.
The Tax Bill Explained in Plain English
After the CT600 is filed, you receive a clear summary of what was charged, what was deducted and what you owe — written in language that makes sense. There are no cryptic schedules to decode and no need to cross-reference HMRC guidance just to understand your own position.
Up and running in four straightforward steps
Most clients are fully onboarded within a week. The process is designed to require as little effort from you as possible at the start.
Book a free discovery call
A short conversation about your company, your current accounting set-up, and what you need from the CT600 process. No sales pitch — just an honest discussion about whether it is the right fit and what the fee is likely to be.
Receive your fixed-fee quote
You will receive a written quote covering the corporation tax return and any other services you need. Everything is agreed upfront, so the fee you see at the start is the fee you pay. No time-based billing, no surprises at year end.
Onboarding and Xero setup
Your Xero account is set up or connected, bank feeds are linked, and existing records are reviewed. If the books need tidying before the year-end close, that is factored into the process. Most clients are fully onboarded within a week.
Compliance handled, liability visible
Your year-end accounts are prepared, your tax liability is calculated and explained, and your CT600 is filed with HMRC before the deadline. You know what you owe well in advance, your Companies House filing is current, and considerably less of your time is spent thinking about it.
“I worked with Daniel at DG Accountancy to review and sign off my sole trader accounts for a time-sensitive mortgage application, and the service was excellent. Daniel was extremely responsive, clear, and professional throughout. He understood exactly what the lender required, turned everything around very quickly without cutting corners. Communication was straightforward and reassuring, which made a potentially stressful part of the mortgage process much easier. Fees were transparent, turnaround was fast, and the work was done thoroughly and accurately. I wouldn’t hesitate to recommend Daniel to anyone needing reliable accountancy support, particularly where deadlines really matter.”
Things people usually ask before getting started
What exactly is a CT600 and when does my limited company need to file one?
A CT600 is the corporation tax return that every UK limited company must file with HMRC, typically within 12 months of the end of your accounting period. The tax itself is due nine months and one day after the year end, which is an earlier deadline than the filing deadline. DG Accountancy tracks both and calculates the liability well in advance so you are not caught out by either.
What is included in the fee and how is it priced?
Corporation tax filing is included in all four limited company packages, starting from £79 per month. The fee covers year-end accounts preparation, the CT600 return, the Companies House filing, and a plain-English explanation of your liability. Everything is agreed upfront in writing — no hourly rates, no bill arriving unexpectedly after the work is done. The first three months are currently available at 50% off.
My books are behind and the year end has already passed — can you still help?
Yes. Catch-up bookkeeping is a common starting point. The accounts cannot be finalised until the records are in order, so the first step is usually a review of where things stand and a clear plan for getting them up to date. The cost of catch-up work is discussed openly before any commitment is made, so you know what you are agreeing to.
Is there a minimum contract or am I locked in?
There is no long-term contract. The service runs monthly and you can leave with reasonable notice. If you decide it is not working, you will receive your records and filings in good order, with nothing left outstanding. The aim is to make the service worth staying for, not to make leaving difficult.
Can you handle the corporation tax if my company has multiple income streams or a complex year?
Yes. Experience across airlines, construction, manufacturing and entertainment means varied revenue types, capital allowance claims, director’s loan account positions and mixed trading structures are all within scope. If your situation is genuinely unusual, that will be discussed on the discovery call and reflected in the quote — there will be no surprises once the work begins.
How far in advance will I know what my corporation tax bill is going to be?
As soon as the year-end accounts are drafted, the tax liability is calculated and communicated in plain English. For most clients this happens several months before the payment deadline, giving enough time to set funds aside or consider any available planning. The goal is that the bill is never a shock.
Related compliance services for limited companies
Get your CT600 filed without the last-minute scramble.
Fixed-fee corporation tax returns for UK limited companies. Your liability calculated early, your filing handled on time, and plain-English explanations throughout. No surprises.