In mergers and acquisitions, bonus depreciation can feel like the quiet person in the conference room who suddenly says one sentence and changes the whole deal model. It is not as glamorous as purchase price, earnouts, or who gets the corner office after closing, but it can create serious cash tax benefits when a buyer acquires qualifying depreciable assets. In the right transaction, the timing and structure of a deal can turn a portion of the purchase price into immediate deductions. In the wrong transaction, the same assets may sit there politely on the balance sheet, depreciating at a pace that makes paint drying look athletic.
The topic matters even more now because U.S. federal tax law restored 100% bonus depreciation for certain qualified property acquired and placed in service after January 19, 2025. That means M&A teams, private equity buyers, strategic acquirers, CFOs, tax counsel, and sellers all need to understand how transaction structure affects tax basis, purchase price allocation, and the timing of deductions. Bonus depreciation is not just a tax compliance detail; it can influence valuation, negotiations, financing, and post-closing cash flow.
This article explains how timing, structure, and tax impact work together in M&A bonus depreciation. We will keep the language practical, the examples clear, and the tax jargon on a short leash.
What Is Bonus Depreciation in an M&A Context?
Bonus depreciation is an additional first-year depreciation deduction under Internal Revenue Code Section 168(k). In plain English, it allows a business to immediately deduct a large portion, and currently often 100%, of the cost of qualifying property instead of depreciating that cost slowly over several years.
In ordinary business operations, this rule may apply when a company buys machinery, equipment, qualified improvement property, certain software, or other eligible assets. In M&A, the issue becomes more interesting because the buyer may be acquiring an entire business rather than one machine or one truck. The big question is whether the buyer receives tax basis in the target’s assets that can be depreciated or whether the buyer simply acquires stock or equity interests without a fresh inside basis step-up.
That difference is enormous. A buyer that acquires assets may be able to allocate part of the purchase price to eligible depreciable property and claim bonus depreciation. A buyer that acquires corporate stock without a tax election generally buys ownership of the corporation, not the underlying assets for tax purposes. The corporation’s historic asset basis usually remains unchanged, and the buyer may not receive the same immediate depreciation benefit.
Why Timing Matters More Than Most Deal Teams Expect
Timing controls whether bonus depreciation is available and when the deduction appears on the tax return. In M&A, three timing questions deserve special attention: when the property is acquired, when it is placed in service, and when the transaction legally closes.
Acquired After January 19, 2025
Under current federal rules, 100% bonus depreciation generally applies to qualified property acquired and placed in service after January 19, 2025. That date is not decorative. It can separate a full immediate deduction from a less favorable depreciation result. If a deal straddles that period, tax advisers should review binding contracts, acquisition documents, closing mechanics, and placed-in-service dates carefully.
For M&A planning, this means the tax team should not enter the chat three days before closing like a surprise guest at a wedding. The tax analysis should begin during letter of intent negotiations, because deal terms may determine whether the buyer can claim a meaningful first-year deduction.
Placed in Service Is Not Always the Same as Closing
Property must generally be placed in service before depreciation begins. In a business acquisition, many operating assets are already in use when the deal closes. If the buyer acquires those assets in a taxable asset acquisition, they may be considered placed in service by the buyer at or shortly after closing, assuming the buyer is ready and able to use them in the business.
However, some acquired assets may require installation, regulatory approval, relocation, testing, or integration before they are placed in service. For example, if a buyer acquires manufacturing equipment but moves it to another facility and spends months reinstalling it, the deduction may not be available until the asset is ready for its intended use. In other words, the closing dinner may happen in April, but the tax deduction may not arrive until the equipment actually starts doing its job.
Short Tax Years and Year-End Closings
Year-end M&A closings can create additional complexity. A December 31 closing might look convenient for business purposes, but tax deductions may depend on whether assets are placed in service before year-end and how the buyer’s tax year is structured. Buyers should model whether a deduction accelerates into the current year or shifts into the next year. Sellers should also consider how the timing affects gain recognition, installment reporting, working capital adjustments, and purchase price negotiations.
Deal Structure: The Engine Behind the Deduction
Bonus depreciation is often less about what the buyer is buying economically and more about what the buyer is buying for tax purposes. That is why structure is the engine behind the deduction.
Asset Acquisitions
In a taxable asset acquisition, the buyer purchases the target’s assets directly. The buyer generally receives a cost basis in those assets, allocated under the applicable tax rules. If part of the purchase price is allocated to qualifying property, such as equipment with a recovery period of 20 years or less, the buyer may be eligible for bonus depreciation.
This structure is usually attractive to buyers because it can create a basis step-up. The step-up may produce immediate deductions, future depreciation, or amortization. Sellers, however, may resist asset deals because they can produce less favorable tax treatment, including ordinary income recapture, entity-level tax for C corporations, or complicated state tax consequences. That is why buyers often ask for asset treatment while sellers respond with the tax equivalent of “nice try.”
Stock Acquisitions
In a straightforward stock acquisition, the buyer purchases shares of the target company. The legal entity continues to own its assets, and the inside tax basis of those assets generally does not change. The buyer receives basis in the stock, not a new basis in the target’s equipment, machinery, or other operating assets.
From a bonus depreciation perspective, this can be disappointing for buyers. The target may continue depreciating its existing assets based on old schedules, but the buyer generally does not get a fresh bonus depreciation deduction on the acquired assets. The buyer may still benefit from bonus depreciation on new qualifying assets purchased after closing, but the acquisition itself may not generate the desired immediate deduction.
Section 338(h)(10), Section 338(g), and Section 336(e) Elections
Certain stock transactions can be treated as asset acquisitions for tax purposes through elections such as Section 338(h)(10), Section 338(g), or Section 336(e). These elections can allow the buyer to achieve a deemed asset purchase while the legal form remains a stock sale. When available, this can create a basis step-up in the target’s assets and may open the door to bonus depreciation on eligible property.
These elections are powerful, but they are not magic wands. They require eligibility, timely filing, seller cooperation in many cases, and careful modeling of seller tax costs. For example, a Section 338(h)(10) election generally requires a qualified stock purchase and applies to certain S corporation targets or subsidiaries in consolidated or affiliated groups. The election can trigger a deemed asset sale, which may increase seller tax. Buyers often need to compensate sellers for that extra tax cost through a gross-up or purchase price adjustment.
Partnership and LLC Transactions
Many private businesses are taxed as partnerships or LLCs. In these deals, buyers often focus on whether a Section 754 election is available or already in effect. A Section 754 election can allow the partnership to adjust the inside basis of partnership assets with respect to the buyer when certain transfers occur. That basis adjustment may produce depreciation or amortization benefits, depending on the assets involved.
For buyers of partnership interests, the analysis can be more customized than in a corporate stock deal. The buyer may receive a special basis adjustment that benefits only that buyer, not all partners. This can make tax modeling more detailed, but also more valuable when the acquired business owns significant depreciable assets.
Purchase Price Allocation: Where the Tax Benefit Is Won or Lost
Once a deal is structured as an asset acquisition or deemed asset acquisition, the next battle is purchase price allocation. Under Section 1060 and related rules, buyers and sellers must allocate consideration among asset classes using the residual method. This allocation determines the buyer’s basis in each asset and the seller’s gain or loss.
For bonus depreciation, the allocation matters because not every asset is eligible. Cash is not depreciable. Accounts receivable may have separate rules. Inventory is not bonus depreciation property. Goodwill and going concern value are generally amortized over 15 years under Section 197 rather than deducted immediately through bonus depreciation. Land is not depreciable at all, because apparently even the tax code admits dirt does not wear out on schedule.
The buyer often prefers more purchase price allocated to short-lived tangible assets that qualify for bonus depreciation. The seller may prefer allocations that reduce ordinary income recapture or produce capital gain. Since both parties report the allocation, inconsistencies can create audit risk. A well-supported valuation is essential.
Example: Asset Deal With Equipment
Suppose a buyer acquires a manufacturing business for $20 million. After allocating the purchase price under the residual method, $6 million is assigned to machinery and equipment, $2 million to inventory, $1 million to accounts receivable, $3 million to real property improvements, and $8 million to goodwill.
If $6 million of machinery and equipment qualifies for 100% bonus depreciation, the buyer may be able to deduct that amount in the first year. If some real property improvements qualify as qualified improvement property, they may also be eligible. The $8 million allocated to goodwill would generally be amortized over 15 years, not immediately deducted. The result is a blended tax profile: some immediate deduction, some slower depreciation, some amortization, and some assets with no depreciation at all.
Used Property Can Qualify, But the Rules Are Strict
One of the most important features of modern bonus depreciation is that certain used property can qualify. This is especially relevant in M&A because buyers often acquire used equipment, vehicles, furniture, fixtures, and production assets as part of a business acquisition.
However, used property must satisfy specific requirements. Generally, the buyer or predecessor must not have previously used the property. The property cannot be acquired from certain related parties. The buyer’s basis generally cannot be determined by reference to the seller’s basis, as in many carryover-basis transactions. These restrictions are designed to prevent taxpayers from recycling old assets through friendly transactions just to create new deductions. The IRS may not have a sense of humor about that sort of thing.
In M&A, this means related-party deals, reorganizations, contributions, and internal restructurings require careful review. A transaction that looks like a purchase economically may not create bonus depreciation if the tax basis carries over rather than stepping up.
Tax Impact for Buyers
For buyers, bonus depreciation can improve after-tax returns by accelerating deductions. A dollar deducted today is often worth more than a dollar deducted over several years, especially when the buyer has taxable income to absorb the deduction. Immediate expensing can reduce cash taxes, improve internal rate of return, and help finance post-closing integration costs.
Bonus depreciation can also influence the buyer’s maximum purchase price. If the buyer expects significant first-year tax savings, it may be willing to pay more than it would in a structure without a basis step-up. In competitive auctions, this can matter. A buyer that can use deductions efficiently may have an advantage over a buyer that cannot.
Still, bigger deductions are not always better in every year. A buyer with net operating losses, interest limitation issues, state tax addbacks, or financial reporting concerns may not fully benefit immediately. Some taxpayers may elect out of bonus depreciation for certain classes of property if a slower deduction produces a better overall result.
Tax Impact for Sellers
Sellers care because the buyer’s desired structure may increase the seller’s tax bill. In an asset sale, sellers may recognize gain asset by asset. Some gain may be ordinary income due to depreciation recapture. C corporation sellers may face entity-level tax, and shareholders may face a second layer of tax when proceeds are distributed.
In a deemed asset sale under Section 338(h)(10) or Section 336(e), the seller may experience similar tax consequences even though the legal transaction is a stock sale. That is why sellers often request a higher purchase price if they agree to asset sale treatment. The buyer’s bonus depreciation benefit may become part of the negotiation: how much is the tax benefit worth, and how much of that value should be shared with the seller?
State Tax Conformity: The Sneaky Second Layer
Federal bonus depreciation is only part of the story. State tax treatment can vary widely. Some states conform to federal bonus depreciation rules. Others decouple, require addbacks, or allow deductions over a different schedule. Multi-state businesses must track depreciation separately for federal and state purposes.
This can materially change the economics of a deal. A buyer may model a large federal deduction and then discover that several key states do not allow the same immediate benefit. That does not eliminate the federal value, but it can reduce total cash tax savings and complicate compliance. For businesses with operations in many states, bonus depreciation planning should include state-by-state modeling before the purchase agreement is signed.
Common M&A Bonus Depreciation Mistakes
Waiting Too Long to Involve Tax Advisers
The most expensive tax advice is often the advice received after the documents are signed. Deal structure, allocation language, election obligations, and closing timing should be addressed early. Once the transaction is locked, opportunities may be limited.
Ignoring Purchase Agreement Language
The purchase agreement should address tax elections, allocation procedures, cooperation obligations, filing responsibilities, and dispute mechanisms. If the buyer expects a Section 338(h)(10) election or a specific allocation approach, the agreement must say so clearly.
Overestimating Eligible Property
Not all assets qualify for bonus depreciation. Buyers should not assume that the entire purchase price can be deducted immediately. A quality of earnings report is useful, but a tax basis and fixed asset review is even better for this purpose.
Forgetting About Recapture
Bonus depreciation accelerates deductions, but it can also increase depreciation recapture on a later sale. If the buyer plans to flip the business in a few years, the exit model should include potential recapture and gain character.
Practical Planning Checklist
Before signing an M&A transaction, buyers and sellers should review several practical questions:
- Is the transaction structured as an asset purchase, stock purchase, partnership interest purchase, or deemed asset purchase?
- Will the buyer receive a tax basis step-up in depreciable assets?
- Which assets qualify for bonus depreciation?
- Were the assets acquired and placed in service after the relevant effective date?
- Is any property excluded because of related-party, prior-use, or carryover-basis rules?
- How will the purchase price be allocated under Section 1060 or similar rules?
- Will sellers require compensation for additional tax cost?
- Do state tax rules conform to federal bonus depreciation?
- Should the buyer elect out of bonus depreciation for any asset class?
- How will depreciation affect future exit planning?
Experience-Based Insights: What Deal Teams Learn the Hard Way
In real-world M&A, bonus depreciation rarely works like a simple spreadsheet assumption. The model may show a beautiful first-year deduction, but the deal process has a habit of adding plot twists. One common experience is that the buyer’s corporate development team identifies a major tax benefit, only for the tax diligence team to discover that the assets are not all eligible. The fixed asset register may be outdated, asset descriptions may be vague, or the target may have grouped equipment in ways that are convenient for bookkeeping but unhelpful for tax analysis.
Another practical lesson is that sellers do not automatically care about the buyer’s depreciation benefit. From the seller’s perspective, an asset sale or deemed asset sale may create more tax pain than a stock sale. If the buyer wants that structure, the buyer must usually explain the economics and be prepared to share value. The best negotiations are not framed as “we want this because our tax department said so.” They are framed as “this structure creates measurable tax value, and here is how we can divide that value while keeping both parties whole.” That approach tends to work better than tossing tax acronyms across the table like confetti.
Deal teams also learn that timing can be surprisingly fragile. A target may have ordered equipment before the acquisition date, signed binding contracts before a key effective date, or placed some assets in service before closing. The buyer may assume all acquired property qualifies for 100% bonus depreciation, but the actual timeline may produce a mixed result. This is why diligence should include invoices, purchase orders, placed-in-service records, construction timelines, and related-party histories. The details may feel tedious, but they can protect millions of dollars in deductions.
Integration planning matters too. After closing, companies often move equipment, consolidate facilities, upgrade systems, and replace assets. These decisions can affect when property is placed in service and whether additional capital expenditures qualify for bonus depreciation. A buyer that coordinates tax planning with operations may capture deductions more efficiently than a buyer that treats tax as a year-end cleanup project.
Finally, experienced M&A teams understand that bonus depreciation is a cash-flow tool, not a business strategy by itself. A bad acquisition does not become brilliant just because the depreciation schedule looks friendly. The target still needs strong earnings, defensible margins, reliable customers, clean records, and a realistic integration plan. Bonus depreciation can improve the economics of a good deal, but it cannot rescue a poor one. Think of it as a turbocharger, not an engine.
Conclusion
Timing, structure, and tax impact are inseparable in M&A bonus depreciation. The buyer’s ability to claim immediate deductions depends on when property is acquired and placed in service, whether the transaction creates a basis step-up, how the purchase price is allocated, and whether the assets satisfy the qualified property rules. Asset purchases, deemed asset purchases, and certain partnership basis adjustments can create valuable depreciation opportunities. Plain stock purchases often do not.
For buyers, bonus depreciation can improve cash flow and deal returns. For sellers, it can create negotiation leverage or additional tax cost. For both sides, it demands early planning, precise documentation, and realistic modeling. The smartest deal teams do not treat bonus depreciation as an afterthought. They put it on the agenda before signing, model it before pricing, and document it before filing. In M&A, timing is money, structure is strategy, and tax impact is where the spreadsheet either smiles or starts sweating.
