File your CT600 yourself. No accountant, no bookkeeping.
Most CT600 software wants finished figures. We work them out with you.
Upload your bank statement and answer plain questions. We work out the figures and file to HMRC and Companies House.
Free to start. Guided £99 before Final Review.
Why directors choose us
Start with what you have
A bank statement, a spreadsheet or a photo. No finished accounts needed.
We sort it, you confirm
We categorise every transaction and work out the tax. You just check.
Every figure explained
Plain English, line by line. Nothing is sent until you approve it.
HMRC and Companies House, one step
Your CT600 and your accounts go together. Guided costs £99, with no subscription.
Who it's for
For supported UK micro-entity companies, add transactions yourself or provide financial records, such as a bank statement, spreadsheet or document. Guided prepares your Company Tax Return and FRS 105 accounts, works out the Corporation Tax, and files to HMRC and Companies House together for £99. You check every figure first.
Bring the records. We build the return.
You do not need to turn your business records into tax figures before you begin.
| You provide | Simple Returns does |
|---|---|
| Transactions entered normally, or a CSV, PDF, .xlsx, JPEG, PNG or WebP file. | Sorts the transactions into the figures your accounts need. |
| Plain-English answers about your company and the year. | Works out the tax and prepares supported FRS 105 accounts and CT600. |
| Your HMRC details and Companies House authentication code when it is time to file. | Shows every figure for your approval before filing to HMRC and Companies House. |
From bank statement to filed return.
Find your company
Search by company name, or type the number if you know it. We pull your registered name, SIC code and accounting period straight from Companies House, so the return starts pre-filled and correct.
Add your transactions
Enter transactions normally, or upload supported records. Every transaction is sorted into the 16 categories your accounts are built from, and we ask only the questions we genuinely cannot work out for you.
Check the figures
Your turnover, expenses and Corporation Tax are laid out in plain English, line by line. Change anything that looks wrong before a single figure leaves your screen.
File to HMRC
We submit your CT600 to HMRC and your iXBRL accounts to Companies House in the same step. You get a confirmation reference back from each.
What Guided £99 covers.
Supported FRS 105 accounts and CT600, with online filing to HMRC and Companies House. No VAT, no subscription, and payment before Final Review.
CT600 filing questions.
What is a CT600?
The CT600 is the Company Tax Return that every UK limited company sends to HMRC each year. It reports your profit and works out the Corporation Tax you owe. It is filed alongside a set of statutory accounts, which also go to Companies House.
Can I file my CT600 online myself, without an accountant?
Yes. If your company is a micro-entity, you can prepare and file your own CT600 and FRS 105 accounts. Simple Returns does the categorisation and the tax calculation for you and shows you every figure to check before it is submitted.
What do I need before I start?
Your HMRC online account and Unique Taxpayer Reference (UTR), your Companies House authentication code, and your transactions for the year, as a bank statement, a spreadsheet, or typed in. You do not need your company number: you can search for your company by name. Corporation Tax must be active on your HMRC account.
How much does it cost to file a CT600 online?
The Guided route is £99 per filing, paid before Final Review. There is no subscription and no charge for starting a return, checking your figures, or changing your mind.
Does it file the accounts as well, or just the tax return?
Both. In one step we send your CT600 to HMRC and your iXBRL micro-entity accounts to Companies House, so you do not have to file the two returns separately.
New to this? Read what a CT600 is, how to file a company tax return, or see how it works. Not sure of your deadline? Check it here, free, no login.
Ready to make a start?
Free to start. No card needed. Guided is £99 before Final Review.
Start your filing