Who we are
Share Scheme Return is a trading name of CHENFLOW LIMITED, a private limited company registered in England and Wales, company number 12064784, incorporated on 24 June 2019. Registered office: 5th Floor, 167-169 Great Portland Street, London, W1W 5PF.
Email [email protected].
What it does, and what it does not
- It checks your data against the format rules in HMRC's technical notes and guidance notes for EMI, CSOP, SAYE, SIP and other (non tax advantaged) arrangements.
- It fills in HMRC's own template, or writes one CSV file per sheet, ready for you to upload.
- It does not submit returns, give tax advice or decide whether an event is taxable.
- It is not HMRC software and is not approved or endorsed by HMRC.
How we keep it accurate
- HMRC's templates, unchanged. We ship copies of HMRC's 5 end of year templates and compare them with GOV.UK. On 21 October 2026 all 5 were identical, byte for byte. The app checks each template's fingerprint before it builds a file, and refuses to build if it does not match.
- Rules taken column by column. The checks come from HMRC's technical notes: 22 sheets and 358 columns, each with its format and whether it is required.
- Help pages link to the source. Every help page names the HMRC guidance it is based on and the date we checked it.
- Tested before every release. Automated tests fill in all 5 templates and read them back, and a browser test confirms no employee data leaves the page.
We still suggest you run the finished file through the checking service in your ERS online account before you submit. It is free and you can use it as often as you like.
How we protect employee data
Names, NI numbers and share details are read and checked inside your browser tab. They are never uploaded, never sent to us or anyone else, and never saved in your browser. The only request with any content is the licence check, which sends your key and nothing else. See our privacy notice.
Our promises
- Checking your file is free, with no account.
- The price you see is the price you pay: £99 a year per company, or £399 a year for up to 25 companies, VAT included where it applies.
- A full refund if you ask within 14 days of any payment. See our refund policy.
- Cancel renewal at any time from your receipt email.
Let the free checker find these for you
Load your option register or finished return and see every row HMRC is likely to reject, with the reason and the fix. Nothing is uploaded, and you don't need an account.