Invoicing & Billing

What is Purchase Order (PO)?

A formal document issued by a buyer to a seller specifying the types, quantities, prices, and terms of products or services to be purchased.

How It Works

A Purchase Order (PO) is a legally binding commercial document that initiates a purchase transaction. It specifies what the buyer wants, at what price, delivery terms, and payment terms. Once the seller accepts the PO, it becomes a contract. The PO-to-payment cycle includes: Requisition → PO creation → PO approval → Vendor acceptance → Goods receipt → Invoice matching (3-way match: PO vs Receipt vs Invoice) → Payment. PO numbers help track orders, manage budgets, prevent unauthorized purchases, and resolve disputes.

Real-World Example

PO #2026-0423 to ABC Supplies: 500 units of Part-A at ₹120/unit = ₹60,000, 200 units of Part-B at ₹250/unit = ₹50,000. Total ₹1,10,000 + 18% GST = ₹1,29,800. Delivery by May 15, 2026. Payment: Net 30.

Why It Matters

1

Ensures accurate financial reporting and record-keeping

2

Helps maintain regulatory and tax compliance

3

Enables better-informed business decisions

4

Improves operational efficiency and cash flow management

Frequently Asked Questions

Is a purchase order legally binding?

Yes, once the seller accepts the PO, it becomes a binding contract. The buyer is obligated to pay for goods/services as specified, and the seller is obligated to deliver. This is why PO approval workflows are critical — they prevent unauthorized commitments.

What is 3-way matching?

A verification process matching three documents: 1) Purchase Order (what was ordered), 2) Goods Receipt Note (what was received), 3) Vendor Invoice (what was billed). All three must agree on quantities and prices before payment is approved. This prevents overpayment and fraud.

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