Why Payroll Data Should Never Leave Your Browser

Payroll files contain some of the most sensitive personal data your practice handles: names, NI numbers, salaries, pension contributions. Any tool that ingests them becomes a data-processing risk.

The browser-only principle

MS Payroll Bridge parses payroll files locally in your browser. No payroll CSV is uploaded to a server. No copy is retained. The only thing that leaves your machine is the journal CSV you download — and only you ever see it.

What this means for GDPR

• No third-party data processor for payroll content — fewer DPIA considerations.
• No data-breach exposure for files we never received.
• Client confidentiality preserved by default.

Frequently asked questions

How can I verify the file isn't uploaded?

Open your browser's network tab during a conversion — you'll see no upload of the CSV body. Only standard page assets are fetched.

Are you a data processor for payroll content?

No. We never receive payroll content, so we cannot process or store it.