# Two-list matcher

> Bank against ledger: exact, then reference, then a date window, then one-to-many — and what is left on both sides.

Source: https://lopifi.com/tools/match
Part of: Lopifi — US GAAP books on autopilot, reviewed by a CPA (https://lopifi.com)

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- **Group:** Reconcile

## Inputs

- `left` — List A — e.g. the bank
- `right` — List B — e.g. the ledger
- `window` — Date window (days) (How far apart the same amount may be dated and still match: ACH settles in one or two business days, a mailed check can take a week or more.)
- `currency` — Currency (ISO 4217 code — sets the decimals: JPY 0, USD 2, KWD 3.)

Runs entirely in the browser: no network call, no data leaves the page. The same definition powers the Lopifi Tools Chrome extension.