Mida OS

EIS · Certificates

EIS3 certificates issued to every investor.

The EIS3 certificate is what your investors actually need to claim their tax relief. Without it, the EIS benefit you promised them is just a promise. Mida OS makes sure every investor gets theirs.

We prepare EIS3 certificates from your compliance statement, cross-reference each investor’s details, and distribute the certificates directly — so your backers can claim relief immediately.

One managed stack for your startup’s back office.

Mida OS handles legal, accounting, compliance and payroll for UK founders — one price, everything included. £350/month.