How you move your data from Wave to QuickBooks Online depends on what format your Wave export is in.
If you have tidy, separated lists (invoices, chart of accounts, customers, etc.):
QuickBooks Online can import these directly:
For other transactions that unable to import into Quickbooks, I'd suggest communicating with the Wave support. Go to Settings → Import Data to get started with any of these file types. If your file contains multiple data types, split it into separate CSVs matching each category above, each type imported individually.
If you only have an all-transaction CSV export (mixed debits/credits, already categorised):
QuickBooks Online doesn't currently support importing transactions with categorisation already attached (expense accounts, paid status, etc). Your options, in order of how much categorisation you keep:
- Use a third-party import app — go to the Apps tab in QBO and search for an import/conversion tool. This generally preserves your existing categorisation best.
- Spreadsheet Sync (QuickBooks Online Advanced only) — syncs data between spreadsheets and QBO directly, but isn't available on other plans.
- Import as Bank Data — available on every plan, but you'll lose all categorisation and need to manually recategorise each transaction, then reconcile the account against your bank statement afterward.
What typically doesn't convert cleanly between platforms (worth planning for, regardless of method):
- Budgets, inventory tracking, and fixed assets
- Classes and custom items
- Memorized/recurring transactions
- Custom VAT rates and invoice templates
- Timesheets and attachments
- Deleted or voided transactions
If you migrate using journal entries and later notice missing or duplicated Sales data: journal entries don't always populate Sales/Business Overview reports the same way native invoices do. If this happens, consider importing the actual Invoice CSV (if available) instead, and remove the journalised duplicate to avoid double-counting.
More detail: Common questions about importing data to QuickBooks Online