How to Normalize Dates in Bank Statement CSV
Fix mixed date formats (MM/DD vs DD/MM) and export consistent ISO dates for accounting tools.
Last updated: 2026-01-04
Overview
Mixed date formats are one of the most common reasons bank CSV imports fail. Normalize to a single format (often ISO: YYYY-MM-DD).
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Step-by-step
- 1) Open Date Normalizer.
- 2) Add your CSV/XLSX.
- 3) Pick the date column.
- 4) Choose the correct input format (or Auto-detect carefully).
- 5) Export a normalized CSV/XLSX.
- 6) Re-import into your accounting tool.
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Troubleshooting
- If Auto-detect flips day/month, set a fixed format explicitly.
- If the file has multiple date columns (post date vs transaction date), normalize both.
- If timezones appear, strip time for statement workflows.
FAQ
What format should I choose?
ISO (YYYY-MM-DD) is widely compatible and sorts correctly.
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