The BABA certification letter: what it must say and who can sign it

A valve manufacturer in Ohio had a shipment held at the gate of a state-funded water treatment upgrade last spring. The valves were genuinely compliant, the domestic-content math was not in question, but the certification letter accompanying them was eight months old, written for a different project the same plant had supplied the previous year. The reviewer would not accept it. Nothing about the valves had changed, but the paper describing them no longer matched the job in front of it, and under the Environmental Protection Agency's State Revolving Fund guidance a manufacturer certification is only good if it is dated within roughly six months of submittal. The truck sat for four days while a new letter worked its way through signature.

What the letter actually is

A Build America, Buy America certification letter is a self-certification. No federal office issues it, stamps it, or pre-approves it. The manufacturer or contractor writes it, on their own letterhead, stating that a specific product meets the domestic-content standard for its category, and the grant recipient, the state agency, utility or city actually receiving the federal money, collects it and keeps it as the evidence behind their own compliance claim. That structure is why the letter carries real weight: nobody downstream is independently confirming the sourcing before the project moves forward. The letter is the check, which is also why a vague or recycled one gets rejected the moment someone actually reads it.

What has to be in it

There is no single federal certification form. The Office of Management and Budget sets the domestic-content standards; individual funding agencies, the EPA's State Revolving Funds, the Federal Highway Administration, USDA Rural Development, publish their own templates and example letters for recipients to use. But the substance a reviewer is checking for is consistent across all of them.

The EPA publishes these as three separate templates, one for iron and steel products, one for manufactured products, and one for construction materials, plus an example manufacturer letter, through its BABA Act resources page. That split matters more than it looks. A single generic letter trying to cover a pump, its steel housing and the concrete vault it sits in is usually the wrong document, because each of those three items is tested a different way, and a reviewer expects to see that difference reflected on the page.

Three categories, three different tests

Our guide to how BABA domestic content is calculated covers the mechanics in full, but the letter itself has to name the right one. Iron and steel needs a statement that every manufacturing step, from the initial melt through any coating, happened in the United States, with no partial-percentage version of that claim. A manufactured product needs the domestic-content percentage of its components stated against the applicable threshold, greater than 55 percent under the OMB baseline (FHWA phases its own version of that test in on federal-aid highway projects, reaching full effect 1 October 2026). A construction material needs a statement that the entire manufacturing process occurred domestically. Get the category wrong on the letter and the certification does not match the test a reviewer is actually running, even if the underlying sourcing would have passed.

Who is allowed to sign it

The letter has to be signed by a qualified representative of the company, someone with actual, current knowledge of where the product is made and the authority to bind the company to that statement. In practice that rules out a sales coordinator filling in a template from a boilerplate answer supplied by someone else in the business. It is a narrower requirement than it sounds, because the person signing is the one exposed if the statement turns out to be wrong, and a company that treats the signature as a formality is the company that gets caught out when a project gets audited.

How long the record has to survive

Signing the letter is not the end of the obligation. Under 2 CFR 200.334, the general federal rule for grant records, recipients and subrecipients must retain the supporting documentation for three years from the date the final financial report for the award is submitted, longer if litigation, a claim or an audit is already open when that period would otherwise end. That is the federal floor, not necessarily what a specific award requires. Some prime recipients set their own contract terms asking contractors and manufacturers to hold mill test reports, cost breakdowns and certificates of origin for five years rather than three, so the number to work from is whatever the grant agreement in front of you actually says, not an assumption carried over from the last project.

The shift from trusting the letter to checking it

For the first few years of BABA enforcement, a properly worded certification letter was usually the end of the conversation. That is changing. A March 2026 executive order pushed agencies overseeing federal procurement toward actively reviewing and verifying domestic-origin claims rather than accepting a contractor's certification at face value, part of a broader enforcement posture our Buy America enforcement guide covers in more depth. Holland & Knight's analysis of the order lays out the mechanism agencies are now expected to use: verify the claim, and where it does not hold up, remove the product, then refer the matter to the Department of Justice. There is no described remediation step in between. The letter used to be the finish line. Increasingly, it is the opening position a reviewer expects to be able to pull apart.

Third-party certification is starting to compete with self-certification

Self-certification is still how the overwhelming majority of BABA compliance gets documented, but it is no longer the only model on the table. The National Electrical Manufacturers Association's Make It American programme, which independently audits a manufacturer's supply chain and domestic-content calculations against Build America, Buy America and related standards, marked its first anniversary in June 2026 when Schneider Electric became the first company to certify its entire US manufacturing footprint, more than 20 facilities, under the programme.

Make It American provides rigorous, independent verification that facilities and supply chains meet Build America, Buy America domestic content requirements, bringing transparency, certainty, and trust to the federal marketplace. (Debra Phillips, President and CEO, NEMA)

A facility-level audit like that does not replace the project-specific certification letter a grant recipient still has to collect for each bill of materials, but it signals where the market is heading: buyers increasingly want a domestic-content claim backed by something more than the manufacturer's own word, and a manufacturer that can point to independent verification behind its letters is starting from a stronger position when a reviewer asks questions.

What a wrong certification actually costs

Signing a certification you cannot support is not treated as a sourcing mistake. It is treated as a false statement. Under 18 U.S.C. Section 1001, knowingly certifying a false statement to a federal program can carry criminal penalties of up to five years' imprisonment. On the civil side, a false certification tied to federal funds can trigger False Claims Act liability, currently running from roughly $14,308 to $28,619 per false claim, on top of treble damages on any resulting overpayment, and can lead to suspension or debarment from future federal work. LegalClarity's breakdown of the certification form sets out the same exposure in more procedural detail. None of that requires proving the company set out to defraud anyone. Signing a letter without actually knowing whether the claim is true is enough to create the exposure, which is exactly why the qualified-representative requirement above is not a formality worth skipping.

A checklist before anyone signs

1. Confirm which of the three categories, iron and steel, manufactured product, or construction material, the item actually falls under, and use the matching template.
2. Run the determination itself first. Do not draft the certification statement before you know what it should say.
3. Gather the Product Service Code, NAICS code, and manufacturing location for every item the letter covers.
4. Write a project reference specific enough to survive being read again in eighteen months by someone who was not on the original bid.
5. Route the letter to someone with direct knowledge of the sourcing, and make sure they read what they are signing rather than initialling a template.
6. Check the date. If the letter is more than a few months old, get a fresh one rather than reusing a letter drafted for an earlier project.

That checklist protects the paperwork. It does not replace the underlying determination, the actual iron-and-steel test, the actual component-cost percentage, or the actual manufacturing-location facts, that the letter is putting into words. Getting that determination right, and having it cited to the specific agency standard, is the part worth doing before a pen goes near the signature line. Where the numbers do not clear the threshold, our guide to BABA waivers covers what a waiver-eligible finding actually requires, rather than forcing a certification that will not hold up.