How to Value an Aerospace & Defense Manufacturer in 2026

Aerospace and defense is one of the most misunderstood sectors in lower middle market M&A. I've worked on transactions where two manufacturers with nearly identical revenue traded at wildly different multiples — one at 4x EBITDA and the other north of 12x — and the reason had nothing to do with financial performance. It had everything to do with who their customer was, what clearances they held, and how deep their contract backlog ran.

If you own or are looking to acquire an aerospace or defense business, you need to understand these dynamics before you even start talking valuation. The median EBITDA multiple across our dataset of 409 A&D transactions is 10.3x, with a median revenue multiple of 1.36x. But those medians mask enormous variation depending on whether you're defense or commercial, prime or sub-tier, and what kind of contracts you hold.

Defense vs. Commercial Aerospace: Two Different Markets

The first thing I tell every A&D business owner is: stop thinking of aerospace and defense as one industry. They share manufacturing DNA — precision machining, composites, assembly — but they operate in fundamentally different market structures with different risk profiles and different buyers.

Defense manufacturers sell to the U.S. government (DoD, intelligence community) or to prime contractors who sell to the government. Revenue is driven by federal budgets, geopolitical threats, and multi-year program cycles. The upside: once you're on a program, you can have 10-20 years of contracted revenue. The downside: budget sequestration, program cancellations, and painfully slow procurement cycles.

Commercial aerospace manufacturers sell to Boeing, Airbus, or their tier-1 suppliers. Revenue follows aircraft production rates, airline profitability, and passenger demand. The cycle is brutal — COVID wiped out commercial aerospace order books overnight — but the recovery trajectory in 2025-2026 has been strong, with Boeing and Airbus backlogs stretching to 2030+.

In my experience, defense-heavy businesses trade at a 20-40% premium to commercial-heavy equivalents in the current market. Buyers pay up for the predictability of government spending and the barriers to entry that protect margins.

Why ITAR and Security Clearances Are Worth Real Money

If you hold ITAR (International Traffic in Arms Regulations) registrations and facility security clearances, you own something that money alone cannot buy. A competitor cannot simply decide to enter your market by writing a check. They need to navigate a 12-24 month clearance process, pass DCSA inspections, hire cleared personnel, and build compliant IT infrastructure. Some classifications take even longer.

I've seen businesses with modest financials — $3-5M in revenue, $500K in EBITDA — attract aggressive offers from strategic buyers specifically because of their clearance levels and ITAR registrations. The acquirer isn't buying your revenue. They're buying 18 months of time they don't have to spend getting cleared, plus immediate access to classified programs they couldn't otherwise bid on.

This is one of the rare situations in manufacturing valuation where a non-financial asset can double your multiple. A machine shop doing defense work with a Secret facility clearance will trade at a meaningful premium over an identical shop without one.

Contract Types and What They Mean for Valuation

Not all government contracts are created equal, and sophisticated buyers parse contract structure carefully.

• Firm-fixed-price (FFP) contracts: You agree to deliver a product at a set price. You bear the cost risk, but you keep the upside if you manufacture efficiently. Buyers love FFP contracts on mature programs because margins are predictable and often improving as you move down the learning curve.
• Cost-plus contracts: The government reimburses your costs plus a negotiated fee (typically 8-15%). Lower margin variability, but also lower upside. Cost-plus is valued more conservatively because margins are capped, but the revenue predictability is extremely high.
• IDIQ (Indefinite Delivery/Indefinite Quantity): These are framework contracts with a ceiling value but no guaranteed minimum. Buyers discount IDIQ contracts heavily unless you can demonstrate consistent task order flow. A $50M IDIQ ceiling means nothing if you've only been awarded $3M in task orders.
• Long-term production contracts: Multi-year contracts for recurring production runs are the gold standard. They provide the kind of revenue visibility that makes lenders comfortable and buyers willing to pay premium multiples.

The mix matters enormously. A business with 70% firm-fixed-price on mature programs and a 3-year backlog is a very different asset than one with 70% IDIQ exposure and 6 months of backlog visibility.

Backlog: The Single Most Important Metric

In every A&D transaction I've advised on, the first question from every serious buyer is: "What's your funded backlog?" Not your pipeline. Not your ceiling values. Your funded, contracted backlog — orders you've won, contracts signed, money appropriated by Congress.

A healthy A&D business should have a book-to-bill ratio above 1.0x, meaning new orders are coming in faster than you're burning through existing backlog. A ratio above 1.2x signals growth and commands premium multiples. Below 0.8x, and buyers start pricing in revenue decline.

Backlog quality matters as much as quantity. I distinguish between funded backlog (money is appropriated and under contract), unfunded backlog (contract exists but funding depends on future congressional appropriations), and pipeline (bids submitted but not yet awarded). Buyers apply roughly 100% credit to funded, 50-70% to unfunded on existing contracts, and 10-20% to pipeline depending on your win rate history.

Size Brackets and What Buyers Pay

The size gap in A&D is significant. Our data shows businesses under $5M in enterprise value trading at roughly 2.6x EBITDA and 0.7x revenue. Move up to the $5-25M bracket, and you're looking at 7.4x EBITDA. The jump is steep because the buyer pool expands dramatically — private equity firms, mid-market strategics, and even the primes themselves start paying attention.

For smaller A&D businesses, the path to a premium exit often runs through becoming a platform acquisition for a PE-backed consolidator. There are dozens of PE-backed defense platforms actively acquiring sub-$25M businesses right now. They'll pay 5-8x EBITDA for a well-run shop with good clearances, solid programs, and a reasonable customer mix.

The strategic premium kicks in when a prime contractor or large tier-1 wants your specific capability. If Lockheed Martin or Northrop Grumman needs your widget for a program and can't easily second-source it, you have leverage that transcends normal valuation math.

Customer Concentration: The Silent Killer

Defense businesses are particularly vulnerable to customer concentration risk. If 60% of your revenue comes from a single prime contractor or a single program, you are one contract loss or program cancellation away from an existential crisis. Buyers know this and price it accordingly.

I've watched A&D businesses lose 30-40% of their indicated value in negotiations when the buyer's diligence revealed that the "diversified customer base" was actually three programs all flowing through the same prime contractor. That's not diversification — that's single-customer risk disguised by contract numbers.

The gold standard is no single customer above 25%, across at least two primes and ideally with some direct government contract work. If you're concentrated, the time to diversify is 2-3 years before you plan to sell.

Prime Contractor Relationships as Value Drivers

In defense manufacturing, your relationship with the primes isn't just a commercial relationship — it's an asset. Long-term supplier agreements, approved vendor status, and a track record of on-time delivery across multiple programs create switching costs that protect your revenue stream.

Buyers evaluate the depth and breadth of these relationships. Being on one program with one prime is fragile. Being an approved supplier across five programs with three primes is a moat. The best-positioned businesses I've seen have multi-year supply agreements with escalation clauses and are designed into the prime's technical data packages — making it extremely costly for the prime to switch suppliers.

If you're thinking about building an engineering services capability alongside your manufacturing, that combination — design authority plus manufacturing — commands the highest multiples in the sector because it locks in the customer relationship at the engineering level.

What to Do Before You Sell

If you're running an A&D business and thinking about an exit in the next 2-4 years, here's what I'd focus on:

Maintain and expand your clearances. If you have a Secret facility clearance, explore whether upgrading to Top Secret opens new program opportunities. Ensure your FSO (Facility Security Officer) documentation is impeccable — clearance compliance issues discovered during diligence are deal killers.

Build backlog visibility. Win new contracts, extend existing ones, and pursue multi-year production awards. Every dollar of funded backlog you add reduces buyer risk and supports a higher multiple.

Diversify your customer and program base. If you're over 40% with any single customer, make it a priority to develop new relationships. Attend defense industry conferences, pursue small business set-aside contracts, and explore adjacent programs.

Document your ITAR and quality systems. Buyers will want to see your ITAR compliance program, DCSA audit history, AS9100 certification, and NADCAP accreditations. Having these documented and current materially speeds up diligence and supports buyer confidence.

Invest in your people. Cleared machinists and engineers are extremely hard to find. If your key employees are retirement-age and uncleared replacements take 12+ months to get cleared, that's a workforce risk that buyers will discount. Start cross-training and succession planning now.

The Bottom Line

Aerospace and defense valuations reward businesses that have built real barriers to entry. Security clearances, ITAR registrations, prime contractor relationships, and long-term contract backlogs are assets that take years to build and cannot be replicated quickly. If you own those assets, you're in a strong position in the current M&A market — defense budgets are growing, PE interest in the sector is at an all-time high, and strategic buyers are actively consolidating the supply base.

The businesses that command the highest multiples are the ones that combine these structural advantages with solid financial performance. A well-run defense manufacturer with diversified programs, strong clearances, and a growing backlog can realistically achieve 8-12x EBITDA in the current market. A sub-scale shop with one customer and no clearances might struggle to get 4x. The gap is that wide, and it's driven almost entirely by factors you can influence if you start planning early enough.