Reconcile two CSV files on a shared key — a payment reference, invoice number, or transaction ID. Free, private, and runs entirely in your browser.
1Load your two files
File A⊞Click to browse or drop a CSV here
File B⊞Click to browse or drop a CSV here
2Choose how to match them
Saved mappings
Scans the actual values in each column to suggest the best key and amount pairings — useful when column names don't match.
File A columns
The unique reference used to pair rows.
Optional — enables amount-mismatch detection.
File B columns
Should hold the same kind of reference as File A.
Optional — compared against File A's amount.
Ignore below £
… and below %
A matched reference only flags as a mismatch when the difference exceeds both limits — letting small absolute rounding and small FX drift pass quietly.
3Reconciliation results
0
Matched references
0
Only in File A
0
Only in File B
0
Amount mismatches
⌕
⊘0 rows marked — these will be skipped from the Excel export