What Is 'Buying In'? Why Underpricing a Bid Can Backfire

Lowering your rate to win a government bid can trigger two federal problems: buying in and a failed cost realism analysis. So a rate you drop to win can cost you the contract, and sometimes the company.

Buying in is submitting an offer priced below your anticipated cost, expecting to make it up later by raising the price or winning follow-on work at higher rates. The government defines it in the FAR, watches for it, and can respond by capping your indirect rates. Separately, on cost-reimbursement contracts, an agency runs a cost realism analysis and can reject a bid it judges too low to be sustainable. This is drawn from our DCAA Ready webinar series, with Paul Calabrese, a former DCAA auditor.

The instinct to shave the number is understandable. The problem is that on government work, "too low" is not just a competitive risk. It is written into federal regulation.

Buying in, defined

The FAR addresses buying in directly. Under FAR 3.501, buying in means submitting an offer below anticipated costs, expecting to increase the contract amount after award (through change orders, for example) or to receive follow-on contracts at prices high enough to recover the early loss.

Why the government cares: The concern is that this practice hides the true cost of the work and shifts risk onto the agency.

On a cost-reimbursable contract, if a DCAA auditor senses you are artificially lowering your rates, the response is concrete: they can place caps, or ceilings, on your indirect rates. Once that happens, only your direct costs stay flexible, and you absorb any indirect overrun yourself.

Cost realism: is the number believable?

The second problem applies at proposal evaluation. On cost-reimbursement contracts, the government is required to perform a cost realism analysis under FAR 15.404-1(d). The analysis independently checks whether your proposed costs are realistic for the work, reflect a clear understanding of the requirements, and are consistent with your technical approach.

If an evaluator decides a cost element is unrealistically low, the agency can adjust your evaluated cost upward for scoring, or conclude the proposal is not credible. Picture ten offers where one carries a far lower multiplier than the rest. The analyst does not see a bargain. The analyst sees risk: the offeror may not be able to perform, or may go out of business mid-contract. As Paul Calabrese put it in our session, describing the government's view: "I don't think that's sustainable. You may go out of business. We just don't even want to play with that."

Cost realism is formally required on cost-reimbursement contracts. On Time and Materials (T&M) and firm fixed price work it is generally not required, though agencies can use related techniques such as unbalanced pricing analysis under FAR 15.404-1(g) in limited situations. The practical point holds across all of them: a rate that looks unreal invites scrutiny.

When a low rate does, and does not, hurt

Not every contractor faces the same risk from a low rate. It depends on your size and structure.

Sole practitioner OFTEN LIMITED
Much of your cost is your own labor and sweat equity, so a low rate mostly reduces your own take, not a fixed cost base.
10-person firm with fringe, overhead, and G&A REAL RISK
You now carry a fixed cost structure, and a rate below it means losing money on every hour.
Cost-reimbursable contractor HIGHEST RISK
Buying in can trigger capped indirect rates and a failed cost realism review.

The turning point is when you stop being just yourself. Once you carry a real indirect structure, a fixed-price or converted-to-fixed-price contract at an underbuilt rate puts the pressure squarely on you to perform at a loss. Paul Calabrese shared a true story from his career:

"I was with a company once where those rates ultimately [were] being converted to like a fixed price, and one vice president... this is really a true story... he said, 'I won this great two million dollar price contract, that was fixed price,' and they fired him because it wasn't sustainable. The company still had to perform, but they were losing the money."

The contract itself was not the problem. An unsustainable rate baked into it was.

How to price low without buying in

Competing on price is legitimate. Pretending your costs are lower than they are is not. The line between them is documentation.

Know your real wrap rate first. You cannot price responsibly below a number you have never calculated. Build the rate, then decide how much margin you can give up.
Give up fee, not cost. Fee is your profit and it is yours to reduce. Trimming your fee to win is a business decision. Pretending your fringe or overhead is lower than it is, is not.
Keep the backup. If an evaluator questions your rate, the difference between winning and losing is whether you can show it is grounded in your actual, historical costs.

For the full build that produces a defensible rate in the first place, see how to build rates that win government contracts, and for what a low multiplier signals, see what is a wrap rate.

A defensible rate starts with defensible books

The reason low rates get contractors in trouble is almost never fraud. It is that they never knew their true cost, so they underbid without meaning to. WiseCost calculates your indirect rates from your actual QuickBooks Online data, so the number you bid is the number you can defend, with the accounts and bases behind it on record.

FAQ

Buying in (FAR 3.501) is offering a price below your anticipated cost, expecting to recover the loss later through change orders or higher-priced follow-on work.

A cost realism analysis (FAR 15.404-1(d)) is the government's independent check of whether your proposed costs are realistic for the work. It is required on cost-reimbursement contracts and can result in an upward adjustment or rejection.

Yes. On cost-reimbursement contracts, a failed cost realism analysis can lead to rejection or an upward cost adjustment. A rate judged unsustainable signals performance risk.

Reducing your fee is a normal business choice. The risk comes from underpricing your actual costs, which can trigger buying-in scrutiny and leave you performing at a loss.

You can run our free DCAA Readiness Self-Assessment to check your books against an SF-1408 review, or start a 14-day free trial of WiseCost, no credit card required.

Based on the DCAA Ready webinar series, Session 04: Bid & Proposal — Building Rates That Win Contracts, featuring Paul Calabrese, a former DCAA auditor (GRF CPAs & Advisors). Educational and not legal advice. Figures are illustrative and not benchmarks.