Turn your payroll file into a ready-to-use census — in minutes
Upload a payroll export, review the auto-mapping, and download a validated
BioFlex census. Everything runs on this server — no third-party AI ever sees your data.
1 · Upload payroll file
Drag & drop a file here, or
CSV, XLSX, XLS, or PDF · max 15 MB
Don't have the file yet? Generate a request email
Pre-written email asking a payroll company or accountant for exactly the data this census needs — tailored to their system. Nothing is sent or stored; copy & paste into your own email.
2 · Review column mapping
Group / employer details (header block)
Template field
Req
Source column
Confidence
Sample
3 · Review & download
Collect missing info from employees
Send each employee their secure link. They confirm their identity and fill only their own withholding details — no SSN is stored. Then click “Merge responses”.
Warnings
Preview (first rows · SSN/DOB masked)
🔒 Processed in memory only — nothing is written to disk.
Your data is automatically cleared from the server the moment you download.
✓ Done. All employee data has been cleared from the server.