A MIPR (Military Interdepartmental Purchase Request) is a formal order one Department of Defense entity uses to request supplies, services, or equipment from another government agency. Filed on DD Form 448, it functions as the mechanism that lets one military branch or DoD organization tap into another agency’s contracting capabilities and existing resources instead of running its own separate procurement.
Think of it as an internal purchase order between government agencies. If the Army needs a piece of equipment that the Navy already has contracts in place to buy, a MIPR lets the Army send its funding to the Navy and have the Navy handle the acquisition on its behalf.
How a MIPR Works in Practice
A MIPR involves two parties: the requiring department (the one that needs something) and the acquiring department (the one that will fulfill the request). The requiring department fills out DD Form 448 specifying what it needs, how much funding it’s providing, and the timeframe involved. The acquiring department then reviews the request and formally accepts it using DD Form 448-2, the Acceptance of MIPR.
Acceptance isn’t automatic. The acquiring department can accept the MIPR in full, accept it partially, or reject it entirely. If any line items are declined, the acquiring department must explain why on the acceptance form. When the MIPR is accepted under certain funding methods, the acquiring department also provides a forecast of the estimated contract award date, giving the requesting agency a timeline for when work will begin.
Category I vs. Category II Funding
When an acquiring department accepts a MIPR, it chooses one of two funding methods, and the distinction matters because it determines who controls the money and how accounting is handled.
Category I (Reimbursable) means the acquiring department uses its own funds on the contract and bills the requiring department later. This method is used in specific situations: when items come from existing inventory, when production is diverted from contracts already in place, when work happens in government-owned facilities, or when the nature of the contract makes it impractical to tie payments directly to deliveries. Cost-reimbursement contracts and fixed-price contracts with progress payments typically fall under Category I. The acquiring department manages all the accounting internally and sends the requiring department a final bill.
Category II (Direct Citation) means the requiring department’s own funds and MIPR number are cited directly on the resulting contract. The requiring department stays responsible for accounting functions because its line of accounting appears on the acquiring department’s contract documents. This method is used whenever the Category I circumstances don’t apply and it’s feasible and economical to tie the requesting agency’s money directly to the new contract.
In some cases, a single MIPR may be split between both categories, with certain line items funded under Category I and others under Category II.
Financial Rules and Fund Expiration
MIPRs aren’t open-ended. The funding period of performance reflects how long the project is expected to take, and the form includes a specific date by which the funds must be obligated on a contract or they’ll be withdrawn. For fiscal year 2025 MIPRs, that obligation deadline is typically September 30, 2025, though it can be set earlier depending on the appropriation type.
The estimated duration of funds is also recorded separately, representing how long the money is expected to last once a contract is awarded. A common timeframe is 12 months from the date of award, but this varies by project. These constraints exist because government appropriations follow strict rules about when money can be committed and spent. Funds that aren’t obligated by the expiration date get pulled back.
Under Category I funding, prices aren’t always locked in at acceptance. The acquiring department can note on the acceptance form that contingencies, price revisions, or quantity changes are anticipated. When that happens, it periodically updates the requiring department before sending bills so the requiring department can amend the MIPR and adjust its financial records. If no such contingencies are noted, the acceptance price is considered final and gets billed at delivery.
Who Uses MIPRs and Why
MIPRs are used across the entire Department of Defense, not just between military branches. DoD agencies use them to fund transactions with other DoD organizations and with non-DoD government agencies as well. Any DoD entity with budget authority and a requirement it can’t efficiently fulfill on its own is a candidate for issuing a MIPR.
Common scenarios include transferring funds for research projects between agencies, procuring specialized equipment through an agency that already has the technical expertise and supplier relationships, or accessing shared services like testing facilities and logistics support. A defense research lab might issue a MIPR to another agency that already runs clinical trials or operates specialized testing infrastructure, avoiding the cost and delay of setting up a parallel contracting effort from scratch.
The core advantage is efficiency. Rather than every DoD entity independently contracting for everything it needs, MIPRs let agencies leverage each other’s existing contracts, inventories, and expertise. This reduces duplication, speeds up procurement timelines, and often results in better pricing through consolidated buying power.