Payroll System

Payroll run in spreadsheets is slow and error-prone, and mistakes are expensive in both money and trust. The system needed to make each run repeatable and auditable.

1. 1

   Encoded the calculation rules once so every run applies them identically.

2. 2

   Built an approval step before disbursement so errors are caught before money moves.

3. 3

   Generated payslips automatically from the same records used for the run.

4. 4

   Kept historical runs immutable so past periods can always be reconstructed.