Payroll batch redaction is the removal of personal identifiers from many payslips in one run, with the Income Tax (PAYE) Regs 2003 (RTI) setting the earnings record at stake. anonym.plus processes up to 20 files at a time on your device, with a shared map so one worker maps to one alias everywhere.
When this applies
A period folder holds dozens of slips that name the same workers. One-by-one work risks drift, so a batch run cleans the set evenly.
How anonym.plus handles it
- Point anonym.plus at the period folder on your machine.
- It scans each file for names, NI numbers, and amounts.
- Local OCR reads any scanned pages in the set.
- A shared map keeps repeat workers steady.
- Review the summary and fix low-confidence flags.
- Save the clean set locally.
What you need to provide
- A folder of slips (PDF, XLSX, mixed).
- The shared map turned on for steady results.
- An operator (Replace works well for a period set).
PII entity types detected
| Category | anonym.plus entity type | Example |
|---|---|---|
| Names | PERSON | worker across files → [STAFF_1] |
| Identifiers | UK_NINO | NI numbers → [NINO] |
| Financial | MONEY | amounts → [AMOUNT] |
| Financial | UK_BANK_NUMBER | accounts → [ACCOUNT] |
| Dates | DATE_TIME | pay dates → [DATE] |
| Contact | EMAIL_ADDRESS | emails → [EMAIL] |
Compliance achieved
- Applies the same treatment to every slip under the Income Tax (PAYE) Regs 2003 (RTI).
- A shared map keeps results steady across the folder.
- Whole-folder work stays offline — nothing leaves the device.
Anonymise payroll batch sets offline — see plans & start free →
Limitations & cautions
A mixed folder of scans and native files leans on OCR for the images, so review low-confidence flags. The shared map can re-link the set if kept; turn it off when you need true anonymity.
Frequently asked questions
How does batch mode keep a worker steady?
A shared map logs each person once, so the same worker maps to the same alias in every file across the folder.
How many slips can one run handle?
Up to 20 files per batch, all processed locally with OCR for scans.
Does the batch run upload anything?
No. The whole run is offline, so the pay data stays on your machine.