Purchase Order vs Sales Order Key Differences Explained
Purchase Order is the buyer’s request to a seller; Sales Order is the seller’s acceptance confirming the sale.
People mix them because both arrive as numbered documents around the same time, and software dashboards often show them side-by-side, making it easy to click the wrong one.
Key Differences
Purchase Order originates from the buyer to trigger procurement. Sales Order is issued by the seller after confirming stock and price, locking in the transaction details.
Which One Should You Choose?
If you’re buying, focus on the Purchase Order to track what you asked for. If you’re selling, watch the Sales Order to know what to ship and bill.
Can one document replace the other?
No, they serve opposite roles; the buyer keeps the Purchase Order, the seller keeps the Sales Order.
Do both need signatures?
Usually, electronic approval on each is enough; ink signatures are optional unless your company policy demands them.