Accounting Transaction Splitting lets you break a single transaction into multiple lines for accounting purposes, so each part can be categorized to a different accounting category, class, location, or tax rate. The split only affects how the transaction is recorded in your accounting system, it doesn't change the actual money movement or what shows up on your bank statement.
When would I use this?
A few common cases:
A purchase that includes a tip or a tax you want to book separately from the main expense (e.g. the tip is non-taxable but the meal is).
A single transfer that's actually paying multiple bills, where you want each bill payment synced to your accounting software separately.
Any payment where the GL coding needs to be split across two or more accounts or classes, or locations.
Which transactions can I split?
Most transaction types — card purchases, transfers, payables, payouts, and similar — can be split, with no limit on the number of lines.
The exception is currency conversions (e.g. CAD → GBP between your own wallets). These are recorded as movements between wallet clearing accounts rather than expenses, so there's no category to split. The accounting category is fixed by design.