Purchase Order (PO)

A Purchase Order (PO) is a simplified acquisition instrument used by federal agencies to buy commercial supplies or non-personal services at or below the simplified acquisition threshold (SAT), providing a streamlined alternative to formal contracts for routine, lower-dollar purchases.

What is a Purchase Order (PO)?

Under FAR Subpart 13, purchase orders are one of the primary simplified acquisition methods for procurement at or below the SAT (currently $250,000 for most purchases). Unlike formal contracts, purchase orders are generally firm-fixed-price and do not require the full range of FAR provisions and clauses that apply to larger acquisitions. The government can issue a PO as an offer to buy, and the vendor accepts by either signing it or by beginning performance. Purchase orders are used for buying supplies, off-the-shelf equipment, and simple services that do not require extensive negotiation. They can be issued on a simplified basis after soliciting at least three quotations when the purchase is above the micro-purchase threshold but below the SAT. Purchase orders are a critical part of the federal procurement ecosystem, billions of dollars in annual federal spending move through POs, and for small businesses, they can be the primary transaction mechanism for selling to the government without holding a long-term contract.

Why POs matter for government contractors

For vendors selling standard commercial products or straightforward services, POs are the most accessible pathway to government revenue. No long-term contract or GSA Schedule is required. Vendors registered in SAM.gov and listed on commercial catalogs or through quote requests can receive POs from agencies without a complex competitive process. Tracking PO-level spending data through FPDS can help identify agencies that regularly buy a firm's products in this price range.

Example

A small company selling ergonomic office furniture receives a call from a federal contracting officer who found the firm through SAM.gov. After collecting quotes from three vendors, the contracting officer issues a $35,000 purchase order directly to the small company. The furniture is delivered, the invoice is submitted, and payment is processed within 30 days, a complete transaction handled entirely through simplified acquisition procedures.

Frequently Asked Questions

What is the difference between a purchase order and a task order?

A purchase order is a standalone simplified acquisition for a specific buy, typically below the SAT. A task order is issued against an existing IDIQ contract vehicle (such as a GSA Schedule or agency-specific IDIQ) and can be for much larger amounts. Task orders exist because a base contract was already competed and awarded.

Do purchase orders require full and open competition?

Not in the traditional sense. For purchases above the micro-purchase threshold ($10,000), agencies must solicit at least three quotations to ensure reasonable competition, but they are not required to post a formal solicitation on SAM.gov or conduct a formal source selection process.

Are there socioeconomic set-asides for purchase orders?

Yes. Agencies are required to set aside purchases between the micro-purchase threshold and the SAT exclusively for small businesses, unless no small business can be found. Additional set-asides for specific small business categories (8(a), HUBZone, SDVOSB, WOSB) also apply in this range.

How are purchase orders paid?

Government purchase orders are typically paid through the Prompt Payment Act, which requires agencies to pay within 30 days of receiving a proper invoice and acceptance of goods or services. Many agencies use the Government Purchase Card (GPC) for purchases at or below the micro-purchase threshold.