Quicken to QuickBooks Online
QIF Importer Pro reads a QIF export, works out what each line should become in QuickBooks, and proves the two sides agree before it writes anything.
Export from Quicken as QIF. Splits, transfers, tags and check numbers all come across.
Every Quicken account and category is matched to a QuickBooks type. Guesses are flagged for you to confirm.
Eight structural checks plus a per-account money table. If the numbers do not agree, nothing is sent.
Entities are created in dependency order, then read back and checked against the register.
A transfer written in both registers becomes a single QuickBooks Transfer, not two entries that double the balance sheet.
Every entity carries a key derived from its contents. Re-running an interrupted import resumes; it does not duplicate.
Start mid-history and the opening balance is synthesized for you. A transfer whose other leg falls outside the window is reported, not invented.
Matches against existing QuickBooks records on amount, date and payee. You decide each one: create, skip, or link.