Many businesses, accountants and bookkeepers prepare annual accounts in Microsoft Excel before producing the final financial statements. While Excel is an excellent tool for preparing accounts, HMRC does not accept spreadsheets as part of a Corporation Tax submission.
HMRC requires financial statements accompanying a CT600 return to be submitted in Inline XBRL (iXBRL) format. This means every relevant financial disclosure must be tagged using the appropriate UK accounting taxonomy, allowing HMRC systems to read and analyse the information electronically.
Instead of purchasing expensive iXBRL software or manually learning taxonomy rules, FinTags converts your Excel accounts into a compliant iXBRL document quickly and accurately.
Most UK companies filing Corporation Tax returns must submit their statutory accounts in iXBRL format. The iXBRL document combines human-readable financial statements with machine-readable XBRL tags that enable automated processing by HMRC.
Submitting an incorrectly tagged or invalid file can result in delays, rejected submissions or additional compliance work. FinTags follows current HMRC taxonomy requirements and validates every file before delivery, helping reduce filing risks.
Send us your Microsoft Excel workbook together with any supporting information required.
We review the workbook structure, reporting framework and disclosures before tagging begins.
Each disclosure is mapped to the latest HMRC taxonomy using specialist software and expert review.
Every report undergoes technical validation together with manual quality checks.
Receive a validated iXBRL file ready for CT600 filing.
Yes. FinTags can convert most Microsoft Excel financial statements into HMRC-compliant iXBRL, regardless of their layout or complexity. Whether your accounts include custom formats, multiple worksheets or detailed financial notes, our specialists accurately map and tag the data using the latest HMRC taxonomy.
No. Formulas within your Excel workbook do not affect the Excel to iXBRL conversion. We review the completed financial statements, verify the figures and apply the appropriate iXBRL tags based on the final financial information rather than the underlying spreadsheet formulas.
Most Excel to iXBRL conversion projects are completed within 1–2 business days, depending on the size and complexity of the financial statements. For urgent Corporation Tax filing deadlines, we also offer expedited turnaround to help you meet HMRC submission requirements.
Yes. Every iXBRL file prepared by FinTags undergoes comprehensive technical validation and manual quality assurance before delivery. This ensures your financial statements comply with the latest HMRC iXBRL filing requirements and are ready for submission alongside your CT600 Corporation Tax Return.
Absolutely. FinTags partners with accountants, tax advisers, bookkeeping practices and audit firms across the UK, providing scalable Excel to iXBRL conversion services for multiple clients. We also offer confidential white-label solutions, enabling firms to expand their service offering without additional in-house resources.
Yes. Your Excel financial statements are handled using secure document management processes and treated with strict confidentiality at every stage. FinTags follows robust internal procedures to safeguard sensitive financial information throughout the Excel to iXBRL conversion process.
You've already prepared your accounts in Excel. There's no need to recreate them in specialist software or spend time learning HMRC taxonomy requirements. Upload your Excel financial statements today, and FinTags will convert them into a filing-ready iXBRL report with expert tagging, validation and quality assurance—so you can file with confidence.
