Corporation Tax Online Filing
Corporation Tax Online Filing makes sure your company’s CT600 is prepared correctly and submitted to HMRC on time, using figures that tie back to your statutory accounts and tax computation. You get a clear view of what is being filed, what tax is due, and what to do next, without having to wrestle with HMRC systems or guess what information is required.
More information
What corporation tax online filing covers
This service takes you from “we need to file” to a complete, online submission with a clean audit trail.
- Preparation and review of the CT600 corporation tax return
- Corporation tax computation aligned to your year-end accounts
- Checks on common adjustment areas (allowable expenses, capital allowances, director loans, dividends, disallowables)
- iXBRL tagging and submission-ready documents where required
- Online filing to HMRC via suitable software or HMRC services (as applicable)
- Clear confirmation of submission and what records to keep
- Guidance on corporation tax payment amounts and deadlines
When this service is most useful
This is a good fit if you run an owner-managed limited company and you want confidence that the return matches your accounts and is filed correctly first time. It is also useful if you have had changes during the year, like new equipment purchases, mixed business and personal costs, or changes in profitability. If you are time-poor, it removes the admin and reduces the risk of avoidable errors or late filing.
How the online filing is delivered
First, the key details are confirmed: your accounting period, Companies House filing position, and HMRC notice to deliver (if relevant). You provide the records needed to support the figures, typically your year-end accounts, bookkeeping reports, and any supporting schedules for items like fixed assets or director loan movements. You then receive a plain-English summary of the final tax computation and CT600 before submission, followed by online filing and confirmation.
What happens after submission
You will know what tax is due, when it needs to be paid, and what to keep on file in case HMRC queries the return later. If issues are spotted that affect future bills, like inefficient expense treatment or timing of purchases, you can use the outcome to improve next year’s position and cash flow planning. If you want ongoing support, the same figures can feed into regular reporting so you are not working it out at the last minute.
Frequently Asked Questions
What do you need from me to file the corporation tax return online?
Do the accounts need to be finished before the CT600 can be filed?
When are the corporation tax filing and payment deadlines?
Can you help if the corporation tax return is already late?
Do I need to file a CT600 if the company made no profit or did not trade?
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