A purchase order (PO) is a pre-approval document that authorises a supplier purchase before the invoice arrives. It creates a budget and policy checkpoint earlier than expense reimbursement or card swipe reviews.
In Airwallex-oriented spend stacks, PO logic complements Bill Pay and corporate cards: planned purchases get approved first, then invoices or card charges are matched against that authority.
Global teams benefit when PO amounts, currencies, and cost centres are captured up front—especially when suppliers invoice in EUR, USD, GBP, or other local currencies.
Strong PO practice reduces surprise liabilities, improves three-way matching (PO, receipt, invoice), and helps controllers forecast cash needs in each wallet currency.
Whether your organisation uses formal PO numbers or lighter pre-approval requests, the principle is the same: approve intent before money leaves the business.
Key points
- Pre-approve supplier spend before invoice payment
- Improve matching between orders, deliveries, and bills
- Support multi-currency procurement planning
- Reduce unapproved card and AP leakage