Importing a bank export file (CSV, OFX, QIF)
Upload a CSV, OFX/QFX or QIF export, map the columns once and save the mapping as a template; duplicates are skipped and near-duplicates flagged.
Banking → Imports.
Choose the account the file belongs to and drop the file in. OFX/QFX and QIF are recognised on sight — the bank's own transaction ids come with them, so re-importing the same file is entirely duplicates. CSV needs the columns mapped once (date, description, amount — or debit and credit columns — and any reference); the mapping is saved as a template for that bank so the next file needs no mapping.
Preview shows the first rows as they will import; fix the mapping there if a date or sign is wrong. Import then reports what was imported, what was skipped as an exact duplicate, what was flagged as a possible duplicate (same amount and date, different description), and any rows it could not read.
Imported lines land in the bank review queue like feed lines, ready to categorise. A connected bank feed makes this unnecessary — see Connecting your bank and credit cards (Plaid).