Selling a Construction Company: Tax Treatment, Bonding, and Exit Planning (2026)

Construction is one of the most equipment-intensive, bond-dependent industries in the lower middle market — and those two facts reshape every aspect of a sale. Equipment that generated large depreciation deductions (including 100% bonus depreciation under OBBBA) creates equally large ordinary income recapture exposure in an asset sale. Bonding arrangements that took years to build can constrain how the deal is structured. Here is what the planning looks like when done correctly.

Construction M&A landscape and buyer types

The construction M&A market in 2026 is active across most segments, driven by infrastructure spending, housing demand, and private equity's continued appetite for construction platforms. Three buyer types dominate lower-middle-market construction deals.

Strategic acquirers (larger contractors)

Larger general contractors and specialty subcontractors acquire smaller operators to expand geographic footprint, add capabilities (self-perform vs. subcontract), secure bonding capacity, or consolidate a fragmented market. Strategic buyers typically pay based on EBITDA multiple but also value contract backlog, equipment quality, and workforce depth. Key considerations:

• Backlog value. Strategic buyers may underwrite a portion of signed backlog at a probability-weighted value — typically 70–90% of backlog GP margin, depending on contract type (lump sum vs. cost-plus vs. GMP). Unsigned pipeline receives no credit.
• Equipment. A strategic buyer with their own fleet may discount equipment value or exclude certain assets from the deal. Negotiate carefully what's included in the enterprise value vs. separately priced.
• Key man risk. If owner relationships drive project flow (developer relationships, public agency contacts), strategic buyers will require employment or transition agreements of 1–3 years.

Private equity and PE-backed platform acquirers

PE has been building construction platforms across specialty segments — electrical, mechanical, plumbing, HVAC, roofing, concrete, and civil — since approximately 2018. These platforms acquire "add-on" companies to grow revenue and EBITDA ahead of a platform exit in 3–5 years. PE characteristics:

• Higher EBITDA multiples than strategic buyers in many specialty niches, because PE is paying for growth potential, not operational synergies
• PE rollover equity opportunity — the selling owner keeps 10–30% in the platform and participates in the second-bite exit. See our PE rollover equity guide for the tax deferral mechanics and what to negotiate beyond percentage.
• Preference for stock sales to preserve bonding continuity — PE buyers understand that re-bonding an acquired company takes time and disrupts project flow
• Focus on EBITDA margin, not revenue — PE buyers will normalize owner compensation and one-time add-backs aggressively

Employee and management buyouts (MBO)

Construction businesses with strong operations teams and project managers are candidates for management buyouts. MBOs are common in construction because the business often runs day-to-day without heavy owner involvement once scaled. They typically use SBA 7(a) loans, seller notes, and PE co-investment. Pricing is typically 15–30% below a competitive market process, but the transition is smoother, bonding continuity is easier to maintain, and the seller often gets more flexibility on deal structure. See our management buyout guide for the mechanics and seller note terms.

Valuation: EBITDA multiples by segment

Construction companies are typically valued on EBITDA multiples. Normalized EBITDA — after adding back above-market owner compensation, personal expenses run through the business, one-time items, and non-recurring revenue — is the baseline. The ranges below reflect lower-middle-market transactions ($3M–$50M deal value) in 2026.

Multiple expanders vs. compressors. Factors that push toward the top of a range: documented service/maintenance revenue that survives ownership change; owner does not personally sign every bid; licensed supervisors throughout the organization; no single customer exceeding 20–25% of revenue; clean equipment fleet with known maintenance history. Factors that compress toward the bottom: all key relationships run through the owner; significant backlog on one large contract; regulatory compliance gaps (OSHA violations, licensing lapses); heavy union workforce with pension fund exposure.

A Quality of Earnings (QoE) report — the sell-side financial due diligence analysis — is essential before going to market. Buyers will run one; it is better to know the findings before they do. See our Quality of Earnings guide for what to prepare.

Section 1245 depreciation recapture: the dominant tax issue

For most construction company sellers, §1245 depreciation recapture is the single largest tax issue in the deal — and the one most likely to be underestimated. If you have taken accelerated depreciation or bonus depreciation on equipment, vehicles, and tools over the years, that deduction comes back as ordinary income (up to 37%) in an asset sale, dollar for dollar, up to the amount of the gain on each asset.

How recapture works

§1245 of the Internal Revenue Code recaptures prior depreciation deductions as ordinary income when depreciable personal property (equipment, vehicles, tools, computers) is sold at a gain. The mechanics:

1. Calculate the adjusted basis: original cost minus accumulated depreciation (including bonus depreciation)
2. The §1245 gain = sale price minus adjusted basis, up to total depreciation taken
3. That portion is taxed as ordinary income at rates up to 37%
4. Any remaining gain above the recapture amount (i.e., gain exceeds all depreciation taken) is long-term capital gain at 20%

This math is why construction owners with large equipment fleets push hard for stock sales — the recapture savings can be $500K to over $1M on a $10M–$20M deal.

OBBBA bonus depreciation and the recapture time bomb

The OBBBA (One Big Beautiful Bill Act, July 2025) permanently restored 100% bonus depreciation for qualified property placed in service after January 19, 2025.² For construction company owners who have been fully expensing equipment since then, this is a double-edged benefit: you got a large deduction today, but you are building a large recapture liability for sale day. Every dollar of bonus depreciation you took will be recaptured as ordinary income at sale in an asset deal — there is no escape from this in an asset structure.

If your plan is to sell within 3–5 years, the decision to take 100% bonus depreciation on major equipment should be made with exit planning in mind, not purely based on current-year tax minimization.

QSBS Section 1202: construction companies can qualify

Unlike medical practices, law firms, accounting firms, or consulting businesses — all of which are explicitly excluded from QSBS eligibility under IRC §1202(e)(3) — construction companies are not among the excluded business types. A C-corp construction company that meets the other §1202 requirements can potentially exclude up to $15M of capital gain per taxpayer from federal income tax entirely.¹

QSBS qualification requirements for contractors

To qualify for the §1202 exclusion, the stock must meet all of the following at time of issuance and continuously:

• C-corporation only. S-corps, LLCs, and partnerships do not issue qualified small business stock. Most construction companies are organized as S-corps or LLCs — to qualify for QSBS, the entity must operate as (or convert to) a C-corp before issuing the qualifying shares.
• Gross assets ≤$75M at issuance. Under post-OBBBA rules, the corporation's aggregate gross assets (cash + adjusted basis of all other assets) must not exceed $75M at the time the stock is issued. Pre-OBBBA the limit was $50M — review the issuance history carefully if shares were issued before the OBBBA effective date.
• Active business requirement. The C-corp must be an active qualified trade or business. Construction qualifies — it is not among the listed exclusions. The corporation cannot hold significant passive assets (real estate held for rental, portfolio investments) relative to active business assets.
• 5-year holding period. QSBS requires holding the stock for more than 5 years before sale. Under OBBBA, the exclusion is tiered: 50% at 3 years, 75% at 4 years, 100% at 5 years. The 3- and 4-year thresholds are valuable planning tools — don't overlook partial exclusions if you are within that window.
• Original issuance. You must acquire the stock at original issuance (directly from the corporation), not secondary purchase. Founders who received stock on day one satisfy this. Subsequent share grants to key employees can also qualify if properly structured.

QSBS and the stock sale requirement

QSBS exclusion is only available on a stock sale — not an asset sale. This creates a powerful alignment with the recapture-minimization goal: both QSBS optimization and recapture elimination push toward a stock sale structure. For qualifying C-corp construction owners, a stock sale can potentially eliminate federal tax on the first $15M of gain per qualifying taxpayer.

For multi-owner construction companies, QSBS stacking via multiple taxpayers (individual owners, family members, non-grantor trusts) can multiply the effective exclusion limit. See our QSBS Section 1202 guide for the full stacking analysis and OBBBA rule changes.

Asset sale vs. stock sale for contractors

Buyers default to asset purchases because they get a step-up in basis, avoid the target's historical liabilities, and can restart depreciation on acquired equipment. But for construction companies, multiple structural factors push back toward stock sales.

The negotiating dynamic: sellers want stock sales (recapture savings + QSBS + bonding). Buyers want asset deals (basis step-up + liability protection). The "structure premium" — additional purchase price buyers pay to get an asset deal over a stock deal — is typically 5–15% of transaction value in construction, reflecting the tax value of the step-up to the buyer. If a buyer cannot accept a stock deal (SBA financing constraint, institutional policy), negotiate for the structure premium explicitly. See our asset vs. stock sale guide for the negotiating framework.

§338(h)(10) election: the hybrid option for S-corps

If your construction company is an S-corp and the buyer is a corporation, you can jointly elect §338(h)(10) treatment — a hybrid that gives the buyer an asset deal (step-up in basis) while the seller is taxed as if it were a stock sale (single level of tax at the shareholder level). This eliminates the C-corp double-tax issue. However, §338(h)(10) does not eliminate §1245 recapture — the deemed asset sale still recognizes recapture at ordinary income rates. See our §338(h)(10) guide for the full analysis.

Bonding and surety: the deal structure constraint most buyers miss

Construction bonding — performance bonds, payment bonds, and bid bonds issued by a surety company — is central to public construction contracting and many private projects. The surety relationship takes years to build (based on financial strength, project history, and personal guarantee of the principals), and it does not automatically transfer when a business changes hands. This creates a significant constraint on deal structure that both parties need to plan around.

Why bonding matters in a sale

• Public construction contracts. Federal, state, and municipal contracts above $150,000 (Miller Act) require performance and payment bonds. Without an active bond, the company cannot bid or perform bonded public work. A buyer who cannot maintain bonding continuity cannot continue the company's public project backlog.
• Bonding capacity affects value. A contractor with $20M in bonding capacity (the maximum aggregate bond amount the surety will underwrite) is worth more than one with $10M, because capacity determines maximum backlog scale. Buyers with smaller balance sheets or newer surety relationships may have insufficient capacity to absorb the seller's program.
• Personal guarantee. Surety relationships are typically personally guaranteed by the business owner. When the ownership changes, the surety company will want to evaluate the new owner's financial position and may require a personal guarantee from them as a condition of continuing the bonding program.

Asset sale bonding complications

In an asset sale, the acquiring entity is new to the surety — they inherit the equipment and contracts but not the bonding history. The buyer must establish their own surety relationship from scratch or expand an existing one. This typically takes 30–90 days minimum, during which the acquired company may be unable to bid new bonded work. For sellers with significant public project backlog, this is a real operational disruption that buyers price into their offers.

Stock sale bonding continuity

In a stock sale, the legal entity — and its surety relationship — is acquired intact. The surety company typically needs to approve the ownership change (most surety agreements include a change-of-control consent clause), but a sophisticated buyer with a clean financial statement and existing surety relationships can usually negotiate continuity. This is one of the strongest arguments for stock sale structure in construction company deals.

Pre-sale action: Before going to market, obtain a letter from your surety confirming your current aggregate bond capacity, the outstanding bond obligations by project, and their general posture toward change-of-control consent. Buyers will ask for this in due diligence, and having it ready speeds the process.

Work-in-progress accounting and the working capital peg

Construction companies recognize revenue differently from most businesses — project revenue is recognized over time as work is performed, not at delivery. This creates two unique balance sheet items that directly affect the working capital peg in a sale: overbillings and underbillings.

Overbillings vs. underbillings

• Overbillings (billings in excess of costs earned) arise when the company has billed the owner more than the percentage of project revenue it has earned based on work completed. Overbillings appear as a liability on the balance sheet — the company owes future performance. They are common in construction because contractors often bill for materials upfront or front-load payment schedules.
• Underbillings (costs in excess of billings) arise when work has been completed but not yet billed. Underbillings appear as an asset. Large underbillings raise a buyer concern: are these collectible? Is the project underbilled because the owner is disputing the work?

WIP and the working capital peg negotiation

The working capital peg — the target level of working capital the seller must deliver at closing — is a major negotiating point in construction deals precisely because WIP accounting makes working capital harder to define than in other businesses. Key issues:

• Should overbillings be included in the WC calculation (reducing WC) or excluded?
• What is the appropriate haircut on underbillings that are in dispute?
• How is the peg calculated — trailing 12-month average (TTM), 3-month average, or spot-date?
• Who bears the risk of a project that goes wrong between signing and closing?

Construction-specialized M&A advisors and CPAs familiar with GAAP/PCAOB contractor accounting (ASC 606 percentage-of-completion) are essential. A working capital dispute is the most common source of post-close litigation in construction deals. See our working capital adjustment guide for the general framework.

Percentage of completion vs. completed contract

Large contractors are generally required by the IRS to use the percentage-of-completion method (PCM) for tax purposes (Treas. Reg. §1.460). Smaller contractors (under the IRS small contractor exemption, currently $30M in average gross receipts) may use the completed contract method (CCM) for tax, deferring income until projects are finished. A company switching methods — or whose method diverges from how the buyer expects to account post-close — creates a potential WC peg mismatch. Get a CPA to analyze the accounting method risk early.

Real estate: equipment yards, shops, and offices

Many construction companies own real estate — equipment storage yards, fabrication shops, offices, or staging areas — in addition to operating the business. This real estate is frequently held in a separate LLC or entity for liability purposes. How you treat this real estate at sale has significant tax and deal implications.

• Real estate held in the operating entity. If the real estate is inside the company being sold, the buyer typically wants it excluded (they prefer to lease back, not own) or priced separately. §1250 unrecaptured gain (the 25% rate on depreciation taken on real property) applies to the building portion in an asset sale. The land portion is LTCG. See our business real estate guide for the 1031 exchange and sale-leaseback options.
• Real estate held in a separate LLC. This is the cleaner structure — the operating company sale and real estate deal are separate transactions. The most common outcome is a sale-leaseback, where the buyer of the business signs a long-term NNN lease on the real estate and the seller retains ownership. This provides the seller with ongoing rental income, preserves future optionality on the real estate, and can be separately 1031-exchanged later.
• Equipment yards and zoning. Equipment storage yards often have industrial zoning that limits alternative uses and may complicate valuation. Environmental liability for fuel and chemical storage is also a concern — see below.

Environmental liability in construction deals

Construction company facilities — particularly equipment yards, shops with underground storage tanks (USTs) for diesel and hydraulic fluid, and older buildings — carry potential environmental liability that buyers will scrutinize in due diligence. Failure to identify and disclose environmental issues is one of the most common deal-killing discoveries in construction M&A.

• Underground storage tanks (USTs). Equipment yards with diesel or fuel storage frequently have USTs installed decades ago. Federal and state UST regulations require registration, leak detection, and financial assurance. Known or suspected leaks are serious environmental liability. Pre-sale: confirm current UST compliance status with your state environmental agency and obtain a Phase I Environmental Site Assessment (ESA) per ASTM E1527-21 before the buyer does.
• Asbestos and lead. Construction companies that work on or own older buildings may have asbestos-containing materials (ACMs) or lead paint exposure in their own facilities. This is a representations and warranties risk in both asset and stock deals.
• Phase I and Phase II ESAs. Buyers will require Phase I at minimum; Phase II (soil and groundwater sampling) if Phase I identifies recognized environmental conditions (RECs). The seller who has a clean Phase I in hand before listing is in a stronger negotiating position than one who discovers problems during buyer due diligence.
• R&W insurance. Environmental representations and warranties are frequently excluded from standard Representations & Warranties insurance policies or require a separate environmental policy. Know this going in — it affects how the escrow and indemnification negotiation goes. See our R&W insurance guide.

Union contracts in asset sales

For construction companies with union workforces — particularly in heavy construction, commercial GC, and mechanical trades — union contracts create additional deal structure complexity in asset sales.

• Successor employer doctrine. Under the National Labor Relations Act, a buyer who acquires substantially all of a business's assets and continues the same business with substantially the same workforce may be deemed a "successor employer" — required to recognize the union and bargain over terms (though not necessarily to assume the prior CBA).
• Multiemployer pension fund withdrawal liability. If the selling company participates in a union multiemployer pension fund (common in construction trades), a sale that constitutes a "complete withdrawal" from the fund can trigger withdrawal liability — a lump-sum obligation for the plan's unfunded vested benefit obligation attributable to the seller. This can range from tens of thousands to millions of dollars and is a major due diligence item in union construction deals. The buyer will want a representation about withdrawal liability; the seller should get an estimate from the fund administrator before going to market.
• Stock sale advantage. A stock sale does not trigger successor employer analysis — the entity (and its existing CBA) continues unchanged, which is operationally simpler and eliminates the withdrawal liability trigger concern.

Installment sale and the §453(i) trap for contractors

An installment sale — where the seller receives payment over multiple years under IRC §453 — can spread ordinary income and capital gains across multiple tax years, potentially keeping the seller in lower brackets year over year. It is a common tax deferral strategy for construction company sellers, particularly when the buyer is a management team (MBO) that cannot pay all cash at closing.

The §453(i) recapture trap is critical to understand. §453(i) requires that depreciation recapture (§1245 ordinary income) be recognized in full in the year of sale, regardless of how much cash is received. You cannot defer recapture income over the installment period — it is front-loaded to the close year. Only the gain above the recapture amount (typically the goodwill and other LTCG components) can be deferred over the installment schedule.

For equipment-heavy construction companies, this means the installment sale's benefit is significantly limited: if $3M of the $8M gain is §1245 recapture, that $3M is recognized and taxed at close regardless of the installment structure. Only the remaining $5M (goodwill and non-recapture LTCG) can be spread. Plan accordingly. See our installment sale calculator and installment sale strategy guide.

NIIT: active contractor vs. passive investor treatment

The 3.8% Net Investment Income Tax (NIIT) applies to capital gains, dividends, and passive income for high-income taxpayers above the threshold ($200K single / $250K MFJ). The key question for construction company owners is whether they qualify as active participants in the business under the §1411(c) material participation rules.

For S-corp or LLC construction company owners who work in the business (manage projects, handle bids, oversee operations), the gain on sale typically qualifies as gain from a non-passive activity — meaning no NIIT applies on the sale gain. This requires meeting one of the seven material participation tests (most owners easily meet the "500 hours" or "substantially all participation" tests).

For passive investors or silent partners who do not materially participate in the construction operations, NIIT applies on their gain share. The 3.8% may seem small, but on a $5M gain it is $190,000. See our NIIT guide for the full analysis and the seven material participation tests.

Planning timeline: 2–5 years before sale

The structural decisions that produce the best tax outcomes in a construction company sale mostly have to be made well before the deal. Here is the critical timeline.

• 5+ years before sale. If QSBS is a goal, the C-corp structure must be in place and qualifying shares must be issued. The 5-year holding clock starts at issuance. Conversion from S-corp or LLC to C-corp resets the clock — and triggers a §1374 built-in gains (BIG) tax exposure for 5 years if the C-corp recognizes gains on assets that were appreciated at conversion. A tax advisor must model the BIG tax vs. QSBS savings tradeoff. See our S-corp vs. C-corp guide.
• 3–5 years before sale. Prepare financials for sale — normalize EBITDA, segregate personal expenses, establish documented management team depth. Begin reducing owner dependency on project relationships. Evaluate real estate structure (sell to separate LLC for sale-leaseback planning). Obtain Phase I environmental assessment on owned facilities.
• 2–3 years before sale. Engage a sell-side M&A advisor for a valuation opinion (not the sale process itself — for planning purposes). Evaluate cash balance plan contribution to shelter pre-exit income at high tax brackets. See our cash balance plan guide for the pre-exit tax shelter math. Review bonding program with your surety — confirm aggregate capacity and change-of-control consent posture.
• 1–2 years before sale. If estate planning is part of the strategy (GRAT, IDGT, or direct gifting of company equity at a discount), the planning window matters — the estate exemption is $15M per person under OBBBA permanently, but GRATs and IDGTs must be structured before a sale is reasonably expected to be imminent. See our estate planning before sale guide.
• 6–12 months before sale. Commission sell-side QoE report, assemble the data room, resolve open items (OSHA compliance, licensing renewals, bonding capacity confirmation, subcontractor classification review). Engage M&A advisor and tax counsel simultaneously — not sequentially.

What an advisor models before you sign

An exit-planning-specialist fee-only advisor is not your M&A attorney or investment banker. They model what you actually keep after all taxes — federal capital gains, §1245 recapture, NIIT, state taxes, estimated tax payments, Medicare surcharges (IRMAA) — across multiple deal structures, so you can negotiate from an informed position.

For a construction company sale specifically, the advisor should model:

• Asset sale vs. stock sale after-tax comparison — including full recapture analysis, NIIT treatment, and state tax sourcing for the specific transaction size and location
• QSBS eligibility analysis — if a C-corp structure was in place, verify qualification and calculate the post-OBBBA exclusion amount for each qualifying taxpayer
• Installment sale cash-flow model — front-loaded recapture vs. deferred LTCG, §453A interest charge on deferred notes above $5M, and the risk-adjusted comparison to all-cash
• PE rollover equity modeling — if a PE buyer offers a rollover, compare the tax-deferred rollover against taking all cash now and the second-bite scenarios at 1×, 2×, and 3× MOIC
• Post-sale financial plan — retirement income, Social Security timing, Roth conversion opportunity, portfolio transition from concentrated proceeds to diversified portfolio

The right time to engage this advisor is 2–3 years before the intended sale — not after the LOI is signed. Most of the highest-value tax strategies have multi-year setup requirements. See our guide on choosing an exit planning financial advisor for what credentials to look for and what to ask in an interview.