How Unfiled works

Unfiled prepares statutory accounts and the CT600 Corporation Tax return for UK micro-companies, working from your bank transactions or figures you already have. Once you have reviewed and declared a supported return, you can submit it directly to HMRC through Unfiled.

1. Check eligibility before you start

The company filing workflow supports eligible UK private limited companies preparing FRS 105 micro-entity accounts. Current CT600 preparation and direct HMRC filing support covers periods ending on or before 31 March 2027, subject to the in-app checks. Your accounting period must have ended before submission. This is not a Self Assessment return for sole traders or landlords.

Repayments, R&D claims, group relief, supplementary pages, loans to participators and off-payroll/IR35 treatments are outside this workflow. Other unsupported circumstances are identified by the software checks. If your return is unsupported, use an accountant or another suitable filing service.

2. Bring complete year-end figures

Have your company details, accounting dates, profit-and-loss figures, balance-sheet figures and tax adjustments ready. Confirm turnover, income, expenses, depreciation, interest, assets, creditors, provisions, share capital and retained profits, including zero where appropriate. You also need your Corporation Tax UTR and relevant adjustments, capital allowances, losses and associated-company information.

You can import CSV, Excel or PDF bank transactions and review their categorisation. Bank statements help with bookkeeping but do not establish complete year-end accounts. Review balances and missing or non-bank items before preparing documents.

3. Prepare and review your documents

Unfiled prepares draft accounts, tax computations and CT600 documents for supported returns. Review means automated checks and your own review of the figures and declaration. It does not include an accountant's sign-off or regulated tax advice.

Keep accounts dates and each Corporation Tax return period distinct. Where a supported period workflow requires allocations or confirmations, complete those checks before preparing the return.

4. Submit directly to HMRC

You can file supported CT600 returns directly with HMRC from Unfiled. The software checks your company, accounting period and tax circumstances and tells you before you pay if the return is outside its supported scope. Review any filing fee or offer shown for your company and period.

Complete the document checks, review the final figures and declaration, then choose Submit to HMRC. Unfiled sends your CT600, accounts and tax computation on your instruction and shows HMRC's response. Keep the acceptance confirmation and the documents filed. A downloaded filing pack or payment on its own has not submitted the return. If the result is uncertain, check the existing submission status before trying again.

If your return is outside Unfiled's supported scope, use another suitable filing service or an accountant. Your filing deadline still applies.

5. Companies House accounts

Company accounts preparation is separate from Companies House submission. Check the chosen filing channel and do not mark accounts as filed until that channel confirms acceptance.

6. Privacy and separate services

Each business profile keeps its working data separate. Review what you save and use the privacy and cookie settings to control optional measurement. Never send tax credentials or sensitive financial details through feedback.

VAT and other tax services have their own eligibility and connection requirements. Their availability does not establish CT600 eligibility.