Frequently asked questions

Not yet. This is a development prototype. HMRC "recognition" means software has passed HMRC's technical tests for the Corporation Tax Online service — it is not an endorsement, approval or guarantee by HMRC. Until recognition and live test-service validation are complete, submissions run in test/simulated mode and nothing is filed for real. We never imply HMRC endorses us.

Directors of UK limited companies of any business type — whether you trade, provide services, or hold property — filing micro-entity (FRS 105) or small-company (FRS 102 §1A) accounts. Dormant companies and charities/CASCs (CT600E) have dedicated fast paths, and you can manage multiple companies under one account. It is built for straightforward cases.

A CT600 return (with CT600E supplementary pages for charities), FRS 105 / FRS 102 §1A accounts and tax computations as inline XBRL (iXBRL), ready to file with HMRC and, optionally, accounts to Companies House. You can file the CT600 only, the accounts only, or both.

That's normal for a first year. A Corporation Tax accounting period can't exceed 12 months, so we automatically split a long period of account into two accounting periods, time-apportion your figures, and prepare two CT600 returns — you enter everything once.

Mostly, yes. The Companies House lookup auto-fills your company details from the public register, and you can upload a trial-balance CSV and we'll map it onto the profit & loss for you to review.

You are. The software prepares figures from what you enter, but the accuracy and completeness of the return and accounts are your responsibility as the person filing. The declaration that the return is correct and complete is made by you, not by us.

For anything beyond a simple case, yes. Trading companies in particular need capital allowances and loss relief, which this tool does not compute — these carry expert-review flags. Even in simple cases we strongly recommend a qualified review before you file. We are a software provider, not your accountant or tax agent.

No. We act on your instruction as a filing tool — we are not your tax agent. We only transmit a return at the moment you choose to submit it.

The software does not pay your Corporation Tax. You remain responsible for paying HMRC by your deadline (normally 9 months and 1 day after your accounting period ends) and for filing on time.

Your company's Unique Taxpayer Reference (UTR), your Government Gateway credentials enrolled for Corporation Tax, and your company registration number (CRN). You never share your Gateway password with us insecurely — credentials are handled per HMRC's requirements and redacted from any stored document.

Yes — main rate, small profits rate and marginal relief, with associated-company and accounting-period-length adjustments, apportioned across financial years. These calculations carry expert-review flags and should be checked.

You'll see the response. We are not responsible for HMRC's processing, acceptance or rejection, or for their service availability — but the prepared files remain available so you can correct and resubmit.

Personal and identity fields and your generated filings are encrypted at rest, traffic is TLS-only, and an audit trail records actions with a hashed (never raw) IP address. You can export or delete your data from the My data page. See the Privacy policy and Security page.

A one-off fee per return, shown before you pay and charged via Stripe only when you choose to file. There is no subscription. In test/simulated mode no charge is taken.

Tax records are retained in line with HMRC requirements — generally six years from the end of the accounting period. Other data is deleted on request, subject to that statutory retention.