---
title: "Blanket purchase order"
description: "A blanket PO lets you buy from one vendor again and again under one agreement. How releases work, when to use one and the federal rules behind BPAs."
canonical: https://engine.com/glossary/blanket-purchase-order
updated: 2026-11-02
author: "Engine Editorial"
---

# Blanket purchase order

A blanket purchase order is a purchase order set up to allow repeated purchases from one vendor, up to a dollar limit, under a single agreement.

Also called: blanket PO, BPO, master blanket purchase order, term contract

Not to be confused with: a one-time purchase order for a single buy.

Updated November 2, 2026 by Engine Editorial

## What is a blanket purchase order?

A blanket purchase order is a standing agreement for repeat purchases from one vendor. This cheat sheet covers how to think about one, how it runs and where it goes wrong. The detail is further down.

### How to think about it

- **One agreement, many purchases.** A blanket PO is set up so you can make repeated purchases from a single purchasing agreement with a vendor.
- **Capped by dollars, not always by item.** It covers items from a vendor up to a dollar limit. It lets you spend a set amount but doesn't necessarily set the dollar amount of each item.
- **Built for recurring, uncertain buys.** It suits recurring purchases of low-value supplies and services when the exact quantity can't be known when the order is issued.
- **Each purchase is a release.** Individual orders are drawn against the blanket PO on a periodic release basis.

### How a blanket PO runs

1. **Set it up.** Procurement establishes the blanket PO with the vendor through its purchasing process.
2. **Fund it.** At one public university, the department gets a funded call number and the system encumbers the amount against the department's budget.
3. **Release orders.** Staff request items off the blanket PO as needs come up.

### Where it goes wrong

- **Treating it as a reason to skip competition.** Federal rules say a blanket purchase agreement doesn't justify buying from only one source or avoiding small business set-asides.
- **Forgetting the budget.** Federal rules say a blanket purchase agreement doesn't exempt an agency from keeping obligations and expenditures within available funds.
- **Thin records.** Federal rules still ask buyers to record the date, supplier, supplies or services, price and delivery date for each purchase.

## Blanket PO vs. other ways to buy

| Type | What it covers | How each purchase is made |
| --- | --- | --- |
| Blanket purchase order | Repeated purchases from one vendor, up to a dollar limit | A release requested off the blanket PO |
| One-time purchase order | A single purchase for items not already on a blanket PO | Its own purchase order |
| Blanket purchase agreement (federal) | Anticipated repetitive needs, through charge accounts with qualified suppliers | Individual purchases, generally made electronically |

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## Questions

### Is a blanket purchase order a contract?

Yes. One public university defines it as a contract for a specified period between the university and a vendor. New Jersey's state purchasing glossary calls blanket POs term contracts.

### What is a release against a blanket PO?

It is a request for items off the blanket purchase order. New Jersey's glossary calls it a release requisition.

### When should you use a blanket purchase order?

For recurring purchases of a wide range of low-value supplies and services, especially when you can't know the exact quantity at the time you set up the order.

### What is the difference between a blanket purchase order and a blanket purchase agreement?

Blanket purchase agreement is the federal acquisition term. The FAR defines it as a simplified way to fill anticipated repetitive needs by setting up charge accounts with qualified suppliers. Both cover repeat buying from set vendors.

## Go deeper

- [Purchasing card (P-card)](https://engine.com/glossary/purchasing-card)
- [Corporate card](https://engine.com/glossary/corporate-card)
- [Cost center](https://engine.com/glossary/cost-center)
- [Engine Direct Bill](https://engine.com/features/direct-bill)

## Sources

1. University of Alaska Anchorage, Procurement Services, "202: Blanket Purchase Orders," https://uaa.alaska.edu/about/administrative-services/policies/budget-financial-services/proc202.cshtml, accessed November 2, 2026.
2. New Jersey Department of the Treasury, Division of Purchase and Property, "NJSTART Glossary Terms," https://nj.gov/treasury/purchase/njstart/pdf/NJStart-Glossary.pdf, accessed November 2, 2026.
3. Electronic Code of Federal Regulations, "48 CFR 13.303-1: General (Blanket purchase agreements)," https://www.ecfr.gov/current/title-48/section-13.303-1, accessed November 2, 2026.
4. Electronic Code of Federal Regulations, "48 CFR 13.303-5: Purchases under BPAs," https://www.ecfr.gov/current/title-48/section-13.303-5, accessed November 2, 2026.
5. Engine, "Direct Bill for Company Hotel Travel," https://engine.com/features/direct-bill, accessed November 2, 2026.