Fixed-Price Is Now the Mandate. Here Is What That Demands from Your Estimating Process.

On April 30, 2026, the President signed Executive Order 14402, "Promoting Efficiency, Accountability, and Performance in Federal Contracting." The order directed federal agencies to make firm-fixed-price contracts the default and preferred method of procurement. For the Department of Defense, non-fixed-price awards above $100M now require agency head approval. The 10 largest existing non-fixed-price contracts across the federal government had to be reviewed for renegotiation by July 29, 2026.

This is not a preference. It is a mandate. And it is the single most consequential change for defense contractor pricing in the current reform wave.

What the mandate actually means

Fixed-price contracting is not new to defense. What is new is its status as the default, with an explicit approval burden attached to any deviation. The practical effect, as analysts have noted, is that contracting officers may default to firm-fixed-price simply to avoid the administrative overhead of justifying an exception.

The implications for contractors are direct and unavoidable. On a firm-fixed-price contract, cost risk sits entirely with the contractor. If the estimate is wrong at bid, the contractor absorbs the overrun. There is no cost-reimbursable adjustment mechanism. There is no sharing of cost growth with the government. The estimate submitted at bid is the estimate the contractor lives with through delivery.

In the Warfighting Acquisition System environment, where RFP windows are compressed and delivery timelines are accelerating, the quality of the estimate at the moment of bid determines everything.

Where estimates break down under fixed-price pressure

The structural weaknesses in most defense estimating processes were manageable when cost-reimbursable contracts provided a buffer. Under a fixed-price mandate, they become expensive.

The first weakness is the absence of systematically accessible prior program data. Most estimating teams rely on the memory of experienced estimators to recall what comparable programs cost. That institutional knowledge is valuable. It is also unreliable at scale, and it walks out the door when experienced people leave. An estimate built on one person's recollection of a program from five years ago is not the same as an estimate built on structured actuals from that program, accessible at the click of a button.

The second weakness is the disconnection between the estimate and the project baseline. In most defense organizations, winning a bid triggers a manual re-entry process: the estimate used to price the contract has to be translated into a project structure, a budget, and a work breakdown in the delivery system. Every handoff is an error opportunity. Every translation introduces the risk that the assumptions behind the bid do not survive contact with the project team. By the time delivery starts, the project baseline and the winning estimate may already be misaligned.

The third weakness is the absence of a closed loop between delivery actuals and future bids. If the actuals from completed programs do not feed back into the estimating model, every bid starts from the same baseline. The estimating process cannot improve. The organization does not get smarter about what programs actually cost to execute.

Under cost-reimbursable contracts, these weaknesses were costly but manageable. Under fixed-price mandates, they are the difference between programs that are profitable and programs that are not.

What the Feinberg memo adds

The September 14, 2026 Feinberg memo reinforces the direction by specifying what the government expects from contractor cost data in the new environment. Forward pricing rate agreements are to draw on data maintained in the ordinary course of business, drawing on contractors' existing GAAP-audited financials rather than duplicate DCAA reviews.

That phrase ‘data maintained in the ordinary course of business’ is precise. It is not asking contractors to produce less cost data. It is asking them to have cost data that is genuine, current, and embedded in how they actually run projects. Not a separate compliance system. Not spreadsheets maintained to satisfy government audit requirements. The actual cost data from how the business operates, structured and accessible.

For contractors whose cost data already flows from their ERP, is traceable to source across the project lifecycle, and feeds automatically from actuals into future estimates, this is a straightforward ask. For contractors whose cost data lives in disconnected systems and requires manual aggregation, the compliance relief the Feinberg memo provides does not make this easier. It makes the underlying data problem more visible.

What accurate fixed-price estimating requires

The estimating infrastructure that performs under the fixed-price mandate has specific characteristics.

Cost element frameworks that structure the estimate consistently, every time, across every business unit. Comparable prior program data accessible at the moment of bid, not after a week of manual analysis. BOM-integrated cost build-up that updates automatically when engineering changes, so the estimate and the scope remain aligned throughout the bid process. A direct connection from the estimate to SAP project execution, so that when the bid is won, the project team starts from the estimate rather than rebuilding it from scratch.

And underpinning all of it: a closed loop where every program delivered feeds the next estimate. Not as a manual exercise, but as an automatic byproduct of how the platform operates.

This is not a gold-plated aspirational capability. It is the baseline infrastructure the fixed-price mandate now requires. Contractors who do not have it are not just at a competitive disadvantage. They are pricing fixed-fee risk without the data to understand what that risk actually is.

The compounding advantage

The flip side of this is real. Contractors who build the right estimating infrastructure benefit from it compounding over time. Every program delivered makes the next estimate more accurate. The estimating process gets faster as the data foundation grows. The bid/no-bid decision becomes more precise as comparable prior program data accumulates. And the project team starts each delivery with a baseline that reflects what the work actually costs, not what someone thought it might cost at the time of bid.

That compounding advantage is what separates the contractors that consistently deliver fixed-price programs at margin from the ones that consistently absorb overruns. It is not talent. It is not luck. It is the infrastructure behind the estimate.

The fixed-price mandate made that infrastructure urgent. The Feinberg memo described what it should look like. The firms that build it now are the ones that will benefit from the reform. The ones that don't are accepting fixed-price cost risk without the tools to manage it.

How Twenty5 iPE helps

Twenty5 iPE gives defense contractors the estimating infrastructure the fixed-price mandate now requires. Cost element frameworks structure every estimate consistently from first principles. Historical actuals from prior programs are accessible at the moment of bid, replacing institutional memory with structured evidence. When the bid is won, the estimate connects directly to SAP project execution with zero re-entry, so the margin assumptions that won the deal travel into delivery intact. And when the program closes, actuals feed back automatically to sharpen the next estimate. The fixed-price mandate transferred the cost risk to the contractor. iPE is how you build the certainty to manage it.