File your Corporation Tax return.
No accountant needed.
We help with the calculations, prepare CT600 and submit it to HMRC.
iXBRL included
000 / Return_pipeline >>>//
accounts.pdf1.2 MB
£ Revenue84,220
£ Expenses51,340
£ Profit32,880
Checks3 flagged
CT600
HMRC · Accepted
What we handle
Everything a straightforward company return needs.
CT600
Corporation Tax calculation
iXBRL accounts
iXBRL computations
HMRC submission
R&D claimsComing later
Group relief · consolidated returnsNot supported
The return, end to end
One pass through your numbers. Nothing hidden behind a form.
Drop in your numbers
A PDF of your accounts, a bookkeeping export, or a spreadsheet you maintain yourself. We line the figures up and mark what needs a second look.
Before you start
Questions directors ask first.
01Can I file my Corporation Tax return without an accountant?
Yes. Filefast is built for UK companies with one trade: it prepares the whole return, checks it and files it with HMRC.
02What do I need before I start?
Three things: your company's Corporation Tax UTR, the Government Gateway login you use for HMRC, and the year's figures.
03What exactly do you send to HMRC?
Three documents: the CT600, the tax computation and the accounts, the last two in iXBRL. Receipts and bank statements stay with you.
04What happens if HMRC rejects the return?
The return comes back to you as a draft with HMRC's reason next to it. Fix what they flagged and file again; your figures stay where they were.