Blanket Purchase Order (Blanket PO)

Each delivery is ordered by a release (also called a call-off) that quotes the blanket PO number. Releases continue until the term ends or the spending limit is reached, as the definition of a blanket order sets out.

• Price and validity are fixed once. Quantity and delivery dates are chosen release by release.
• The release is the instruction to ship. Hold any goods that arrive without a release number.
• Set a cap and an end date. The University of California, Berkeley policy keeps blanket POs to one year unless they come from a multi-year competitive bid.
• Name who may release. Anyone else's release fails.
• A minimum purchase exists only if the terms say so.

A blanket PO works as a balance that falls with every release. This example is an illustration. The blanket PO is ₹6,00,000 excluding goods and services tax (GST), for 12,000 units at ₹50, valid 1 April 2026 to 31 March 2027. The balance is the cap minus the cumulative value released. The supplier is assumed to be a registered micro or small manufacturer.

A blanket PO balance falls with every release

A fourth release, R4, asks for 5,000 units worth ₹2,50,000 against a balance of ₹2,25,000, so it is blocked: ₹25,000 over. The most that can be released is 4,500 units (₹2,25,000 ÷ ₹50). Anything more needs a written amendment first. GST is added on each invoice, and the GST-ready sample PO covers its format.

Ledger columns: blanket PO number, release number, release date, requested by, units, rate, value, cumulative value, balance, receipt note number, acceptance date, invoice number, pay-by date, status.

Before approving a release, all four must pass. Fail any one and the release is held:

• Value is no more than the balance.
• Date is inside the validity period.
• Rate equals the blanket rate.
• The requester is on the named list.

Before paying, all three must pass. Fail any one and you query the supplier:

• The invoice quotes the release number.
• Its quantity matches the goods receipt note.
• It has not been paid before.

The payment limit runs from the day you accept the goods, not from the date of the blanket PO. As of October 2026, section 37(2)(g) of the Income-tax Act, 2025 (which replaced section 43B(h) of the Income-tax Act, 1961 from 1 April 2026) allows a deduction for an amount owed to a micro or small enterprise only in the year it is paid, unless it is paid within the section 15 limit of the Micro, Small and Medium Enterprises Development (MSMED) Act, 2006. That limit is the agreed period, 45 days at most, or 15 days if nothing is agreed in writing. Section 43B(h) of the 1961 Act still governs tax year 2025-26 and earlier.

A year-long blanket PO with monthly releases therefore carries twelve separate clocks. Put a payment term of 45 days or less in the blanket PO and get the supplier's written acceptance of it (a signed copy or an email confirmation). That written term is the agreement that sets the limit for every release.

The limit counts from the "day of acceptance or deemed acceptance". If you do not object in writing within 15 days of delivery, acceptance is treated as the delivery day. The rule has applied since assessment year 2024-25 (financial year 2023-24 onwards), as introduced by the Finance Act, 2023. It covers goods and services and applies to suppliers registered as micro or small enterprises (together with medium enterprises, the micro, small and medium enterprise, or MSME, category) under the MSMED Act. Check the supplier's Udyam registration before applying the 45-day limit. Pay late and the deduction moves to the year you actually pay. A Finance Ministry reply in the Rajya Sabha (Unstarred Question No. 242, 21 July 2026) restated the 45-day limit.

A longer contract can sit above blanket POs, and the blanket PO then becomes the yearly ordering tool beneath it.

Related terms:

• Release or call-off order: one delivery drawn against the blanket PO.
• Standing order: a similar arrangement in which quantities and dates repeat on a fixed schedule rather than being called off.
• Blanket purchase agreement (BPA): the name used under US federal schedule contracts, set out in Federal Acquisition Regulation (FAR) 8.405-3, as noted on Wikipedia.

Use a blanket PO when you buy the same items repeatedly from one dependable supplier and can accept the locked price. If any test fails, stay on standard POs for that item.

1. Repeat demand. Pass if you expect at least three releases in the term.
2. Forecast. Pass if you could consume any minimum even in your slowest recent months.
3. Supplier. Pass if the last orders arrived on time and in full against your receipt notes.
4. Price. Pass if the locked rate is within your agreed tolerance of the current quote from a second supplier on the day you sign. Fail otherwise, or add a price-review clause.
5. Control. Pass if releasers are named and one person owns the ledger.
6. Payment. Pass if you can pay each release inside the agreed term.

We handle the delivery side of every release: raise it as a purchase order, receive against it, and record what arrived. Purchase orders and transfers come with our Basic plan. Our forecasting and purchase automation lets you schedule purchase requisitions or purchase orders to keep stock at the right level.

We recommend the financial year, April to March, as the blanket PO term, and a price tolerance of 5% for the price test. We track each release as its own purchase order; the cap balance lives in the ledger above. Our suggested method:

1. Raise each release as its own PO that quotes the blanket PO number.
2. When goods arrive, select the supplier. Our inbound process then lists that supplier's outstanding purchase orders to receive against.
3. Copy the receipt date into the acceptance column of your ledger.
4. Keep the cap balance in the spreadsheet above.
5. Size each release from your reorder point, so releases follow demand rather than the calendar.

We offer a 15-day free trial with full access and no credit card.