Aircraft Depreciation: 2026 Business Tax Rules & Deductions

Last reviewed: October 11, 2026
Tax year: 2026
Primary jurisdiction: United States
Audience: Business aircraft owners, private jet operators, aviation companies, and tax professionals

Aircraft depreciation is an important tax consideration for U.S. businesses that own or use aircraft for qualified business purposes. Understanding how depreciation works can help aircraft owners evaluate tax deductions, bonus depreciation, applicable business-use requirements, and potential depreciation recapture when an aircraft is sold or its use changes. The correct tax treatment depends on factors such as the aircraft’s purchase date, placed-in-service date, qualified business use, and applicable federal tax rules for 2026.

For 2026, eligible aircraft acquired and placed in service after January 19, 2025, may qualify for a 100% special depreciation allowance under federal law. However, that does not mean every private jet or business aircraft automatically qualifies for a full first-year deduction. Business aircraft are subject to specific use tests, documentation requirements, and potential depreciation recapture.

This guide explains how aircraft depreciation works under U.S. federal tax rules, what business aircraft owners should review before claiming a deduction, and why tax planning should consider both the acquisition year and the aircraft’s future use or sale.

Table of Contents

Aircraft Depreciation at a Glance

Aircraft depreciation allows a taxpayer to recover the tax basis of qualifying property used in a trade or business or an income-producing activity. Depending on the facts, recovery may occur over several years or through an eligible first-year deduction.

Key considerations include:

Tax basis: The eligible cost of the aircraft and qualifying capitalized expenses, adjusted as required.
Placed-in-service date: When the aircraft is ready and available for its intended business use.
Business-use requirements: Business aircraft generally must satisfy both the applicable 50% qualified business-use test and an aircraft-specific 25% test to claim accelerated depreciation.
Depreciation method: The applicable rules may involve MACRS, the Alternative Depreciation System (ADS), Section 179, or special depreciation allowances.
Bonus depreciation: Eligible property acquired and placed in service after January 19, 2025, may qualify for 100% special depreciation, subject to statutory requirements and elections.
Records: Flight-by-flight passenger and business-purpose records are important for substantiating aircraft use.
Disposition: Selling an aircraft or failing a business-use test may trigger taxable gain or depreciation recapture.

These rules are federal tax principles. State taxes, international ownership, financing, aviation regulations, and the taxpayer’s legal structure may create additional considerations.

1. What Is Aircraft Depreciation?

Aircraft depreciation is the process of deducting the eligible tax cost of an aircraft over time or, where the law permits, taking a larger deduction in the year the aircraft is placed in service.

A company may purchase an aircraft to travel between offices, visit customers, transport employees for business purposes, or support an aviation or charter operation. When the aircraft meets the applicable tax requirements, depreciation may reduce taxable income.

The deduction is a tax accounting benefit, not a reimbursement of the purchase price. A deduction of $1 million does not normally mean the taxpayer receives $1 million in cash. Its value depends on the taxpayer’s tax position, applicable tax rates, limitations, and ability to use the deduction.

Aircraft depreciation should also be distinguished from the aircraft’s market value. A jet can decline in market value at a different rate from its tax depreciation schedule. Tax depreciation follows statutory methods and classifications rather than a simple estimate of resale value.

For a broader overview of ownership structures and deductions, see BermudaFin’s aircraft tax planning guide.

2. Establishing the Aircraft Tax Basis

The aircraft tax basis is the starting point for calculating depreciation. For a purchased aircraft, the basis generally begins with its acquisition cost and may include additional costs that must be capitalized under applicable tax rules.

Depending on the transaction, relevant costs may include:

The purchase price paid for the aircraft.
Certain delivery and acquisition costs.
Necessary costs to bring the aircraft to the condition required for its intended use.
Qualifying improvements or modifications that must be capitalized.
Other costs treated as part of the aircraft’s basis under the relevant tax rules.

Not every expense connected with aircraft ownership automatically becomes depreciable basis. Routine operating expenses, insurance, fuel, hangar charges, maintenance, and repairs require their own tax analysis. Some may be deductible as incurred, while others may need to be capitalized, allocated, or treated differently.

Financing also needs careful treatment. Borrowing money to buy an aircraft does not, by itself, mean the aircraft’s basis is limited to the buyer’s cash down payment. The acquisition and debt arrangements must be analyzed under the applicable rules.

For example, assume a business purchases an aircraft for $4 million and incurs $120,000 in additional costs that are properly capitalized. Its preliminary tax basis would be $4.12 million before considering any other required adjustments. The actual depreciable basis could differ based on the contract, cost allocation, tax treatment of individual items, and subsequent adjustments.

A defensible aircraft tax basis should be supported by the purchase agreement, closing statement, invoices, payment records, financing documents, and a schedule explaining which costs were capitalized and why.

3. When Is an Aircraft Placed in Service?

The placed-in-service date is a key factor in aircraft depreciation. Depreciation generally begins when property is ready and available for its specifically assigned business or income-producing function.

Signing a purchase agreement, making a deposit, or taking legal title does not necessarily establish the placed-in-service date. The aircraft must be ready and available for its intended use, based on the facts and applicable rules.

For an aircraft, relevant evidence may include delivery and acceptance documents, completion of necessary inspections or modifications, operational readiness, required registrations or approvals, and records showing when the aircraft became available for its intended function. The significance of each item depends on the circumstances.

An aircraft delivered near year-end deserves particular attention. If final work, required equipment, or other essential steps remain incomplete, the taxpayer should not assume that a late-year payment guarantees a depreciation deduction for that year.

The acquisition date and placed-in-service date may also affect bonus depreciation eligibility. Certain aircraft transactions involving purchase agreements signed before January 20, 2025, but delivered or placed in service later may require a separate analysis of transition rules and current IRS guidance.

Practical tip: Keep a written placed-in-service memorandum with supporting documents. Record the date, the aircraft’s condition, its intended use, and the evidence that it was ready and available for that use.

4. Business Use: The Core Eligibility Question

Business aircraft are treated as listed property under U.S. federal tax rules. This means special business-use requirements apply in addition to the general depreciation rules.

For accelerated depreciation, including Section 179 and the special depreciation allowance, business aircraft generally must satisfy both:

The applicable more-than-50% qualified business-use test.
The aircraft-specific 25% test under Section 280F in the circumstances covered by that rule.

The precise calculation depends on how the aircraft is owned, operated, leased, and used by owners, related parties, employees, and other passengers. The aircraft-specific test is not simply a universal rule that 25% of every flight must be for business; the statutory treatment and passenger-use calculations must be applied to the actual facts.

Qualified business use generally relates to use in a trade or business. Personal trips, certain entertainment-related travel, and other nonqualifying uses can affect the calculation. The treatment of a particular trip depends on its purpose, passengers, relationships, and relevant tax rules—not merely on whether the company paid for the flight.

For business aircraft, use should be evaluated on a flight-by-flight basis, with each passenger on each flight leg properly classified. A mixed-purpose trip can therefore require more analysis than simply labeling the entire itinerary “business.”

If the applicable tests are not satisfied, the aircraft may be ineligible for accelerated depreciation and may need to use straight-line depreciation over the applicable ADS recovery period. A failure to satisfy the tests after accelerated deductions have been claimed can also result in recapture.

Aircraft owners should calculate business use before selecting a depreciation method, then monitor it annually throughout the applicable recovery period.

For related information about qualifying operating expenses and deduction requirements, review BermudaFin’s business aircraft tax deductions guide.

5. Depreciation Methods for Business Aircraft

The available method depends on the aircraft’s use, tax classification, acquisition facts, and other eligibility requirements. The main methods and provisions to consider are MACRS, ADS, Section 179, and bonus depreciation.

Modified Accelerated Cost Recovery System (MACRS)

MACRS is the principal federal tax depreciation system for many types of business property. Eligible aircraft may qualify for accelerated recovery under the applicable General Depreciation System (GDS) rules when the statutory requirements are met.

The recovery period and depreciation method depend on the aircraft’s classification and operational facts. For example, the treatment of aircraft used in certain commercial or contract carriage operations can differ from the treatment of other business aircraft.

A depreciation schedule should not be selected solely because another aircraft owner used it. The owner or tax adviser should confirm the applicable asset class, recovery period, convention, business-use status, and eligibility for any additional first-year allowance.

Alternative Depreciation System (ADS)

ADS generally uses straight-line depreciation over an applicable recovery period. It may be required when specific tax rules apply, including certain circumstances where listed property does not satisfy the predominant qualified business-use requirement.

ADS may produce smaller deductions in the early years than an accelerated method. Nevertheless, the applicable law may require it, and it can be relevant when a taxpayer elects out of certain provisions or the aircraft fails a required test.

Section 179 Deduction

Section 179 may allow an eligible taxpayer to expense qualifying property, subject to statutory limits, taxable-income restrictions, property requirements, and special rules for listed property.

An aircraft does not qualify simply because a business purchased it. The taxpayer must confirm that the aircraft and its use meet the applicable requirements, including the business-use tests. The interaction between Section 179, bonus depreciation, and other depreciation provisions should be evaluated before making an election.

Straight-Line Depreciation

Straight-line depreciation spreads the depreciable basis over the applicable recovery period. It may apply because of a legal requirement, an election, or a change in the aircraft’s qualifying use.

The most appropriate method is not always the one that produces the largest deduction in the first year. Taxable income, expected future profits, potential recapture, financing terms, and anticipated ownership duration can all influence the overall result.

6. Bonus Depreciation for Aircraft in 2026

Bonus depreciation, also called a special depreciation allowance, can permit an eligible taxpayer to deduct a large portion—or potentially all—of the depreciable basis of qualifying property in the year it is placed in service.

Under changes enacted in 2025, eligible property acquired and placed in service after January 19, 2025, may qualify for a 100% special depreciation allowance. Certain new and used aircraft may qualify, but the taxpayer must satisfy the applicable acquisition, placed-in-service, use, and other statutory requirements.

The allowance is not a blanket deduction for every aircraft purchase. In particular, listed-property requirements remain important. The aircraft’s business use and ownership arrangements must be examined, and special rules may apply to aircraft transactions involving contracts executed before the statutory date.

The law also permits elections that can affect the percentage claimed for certain property in the relevant circumstances. A taxpayer should not assume that claiming the maximum deduction is always the best tax decision. Accelerating deductions into the current year can reduce deductions available in later years and may affect the tax consequences of a future sale.

Before claiming bonus depreciation, the tax preparer should verify:

The aircraft’s acquisition date and the applicable acquisition rules.
The placed-in-service date.
Whether the aircraft qualifies as eligible property.
Whether the required business-use tests are met.
Whether any election out or special election is appropriate.
Whether other limitations affect the deduction.
Whether the records substantiate the claimed business use and tax basis.

Because aircraft purchases can involve substantial amounts and complex delivery arrangements, the eligibility analysis should be completed before the tax return is finalized.

7. Mixed Business and Personal Use

An aircraft may be used for business travel and personal trips during the same year. This mixed-use pattern can complicate aircraft depreciation.

The taxpayer must classify aircraft use according to the applicable rules and retain enough evidence to substantiate the classification. Personal travel should not be recorded as business travel merely because the aircraft is owned by a company, the passenger is an executive, or the trip begins or ends at a business location.

The analysis may also involve employee fringe benefits, entertainment-related expense limitations, related-party use, compensation arrangements, and the tax treatment of payments made by passengers or affiliated entities. These issues are separate from the depreciation calculation but can affect the overall tax treatment of aircraft operations.

For example, a business owner may use an aircraft for customer meetings on some days and personal travel on others. The taxpayer should maintain records identifying each flight leg, passenger, destination, purpose, and relevant business relationship. The accountant can then determine which uses qualify and calculate the appropriate business-use percentages.

Where business use is below the required threshold, accelerated depreciation may not be available. The taxpayer may also need to change the depreciation method or recognize recapture if the aircraft previously qualified for accelerated deductions.

A robust process should classify each trip when it occurs, rather than trying to reconstruct the entire year from calendar entries at tax time.

8. Aircraft Depreciation Recapture

Depreciation recapture is a potential tax consequence when an aircraft is sold, disposed of, or no longer meets certain requirements after accelerated deductions have been claimed.

The general idea is that earlier deductions can affect the amount of gain recognized on a sale or require income to be recognized when a statutory test is no longer satisfied. The precise result depends on the aircraft’s tax basis, depreciation allowed or allowable, sale proceeds, disposition expenses, use history, and the rules governing the transaction.

A sale may produce taxable gain even if the aircraft’s market value has fallen since acquisition. Tax basis is reduced by depreciation allowed or allowable, so the difference between adjusted basis and the amount realized can be important.

Business aircraft also face a specific risk if they fail the required 25% or 50% qualified business-use tests during the aircraft’s class life. Under the IRS’s listed-property guidance, failure can require straight-line depreciation under ADS and recapture of excess depreciation previously claimed.

This is why an aircraft depreciation plan should not stop after the acquisition year. Owners should review the aircraft’s use annually and model the potential tax consequences of a sale, trade-in, ownership restructuring, or change in operating arrangements before acting.

9. Selling an Aircraft After Claiming Depreciation

Before selling a business aircraft, calculate its adjusted tax basis and compare it with the expected amount realized. The amount realized may include more than the headline sale price, depending on transaction costs and other facts.

The tax analysis should identify the depreciation claimed, depreciation that was allowable, any prior adjustments, and the character of potential gain. Different rules may apply to different portions of a gain, and the result may not match the economic profit or loss perceived by the owner.

A pre-sale review should include:

The original tax basis and all subsequent capitalized improvements.
The depreciation schedule and prior tax returns.
Any Section 179 or special depreciation elections.
Business-use calculations for each relevant year.
Outstanding debt and transaction costs.
The sale agreement and any trade-in or exchange provisions.
Potential federal and state tax consequences.

Owners considering a replacement aircraft should analyze the old aircraft’s disposition and the new aircraft’s eligibility separately. Buying another aircraft does not automatically eliminate gain or recapture from the first transaction.

For more detail on deductions associated with private aircraft ownership, see BermudaFin’s private jet tax deductions guide.

10. Recordkeeping for Aircraft Depreciation

Documentation is central to an aircraft depreciation claim. The IRS expects records that support the amount of expenses, the time and place of travel, the business purpose, and the business relationship of each person using the aircraft.

A practical recordkeeping system should include:

Purchase agreement, closing statement, and delivery documents.
Invoices for acquisition costs and capital improvements.
Aircraft registration and operational-readiness documentation.
A complete flight log, including dates, departure and arrival points, and flight legs.
Passenger names and their relationship to the business.
A specific business purpose for each qualifying trip.
Records distinguishing business, personal, entertainment, and other uses.
Operating expenses, maintenance invoices, and insurance records.
Annual business-use calculations and depreciation schedules.
Copies of relevant tax returns, elections, and supporting workpapers.

Records should be made at or near the time of each trip. A calendar entry or a general note that a flight was “for business” may not provide enough detail to support the tax treatment in a complex situation.

Aircraft operators should coordinate pilots, flight departments, finance teams, and tax advisers so that passenger and trip information is captured consistently. A written procedure can reduce errors and make year-end calculations more reliable.

11. Worked Example: Planning an Aircraft Tax Deduction

Assume a U.S. business acquires an aircraft and has a preliminary depreciable tax basis of $4.12 million after eligible capitalized costs are considered. Assume further that the aircraft is acquired and placed in service during 2026 and that the taxpayer is evaluating whether a special depreciation allowance is available.

A 100% allowance, if legally available for the aircraft and the taxpayer’s circumstances, could potentially permit a deduction equal to the eligible depreciable basis in the relevant year. That does not mean the business automatically receives a $4.12 million tax benefit, nor does it establish that the aircraft qualifies.

The result depends on the applicable acquisition rules, placed-in-service evidence, tax basis, business-use tests, other limitations, and any relevant elections. A different result may apply if the aircraft is subject to ADS, the use tests are not satisfied, or the transaction falls within a special rule.

The tax adviser should also model future consequences. A large first-year deduction can reduce adjusted basis and may increase taxable gain on a later sale. If the aircraft’s use changes, recapture may also be relevant.

This example illustrates the planning process only. It is not a tax calculation for a particular aircraft and should not be used to file a return without a fact-specific review.

12. Common Aircraft Depreciation Mistakes

Aircraft owners can create avoidable tax risks by:

Treating the purchase date as the placed-in-service date. The aircraft generally must be ready and available for its intended use.
Assuming every aircraft qualifies for 100% bonus depreciation. Eligibility depends on statutory conditions and transaction details.
Ignoring the aircraft-specific 25% test. Business aircraft may have to satisfy both the 50% and 25% tests for accelerated depreciation.
Combining all passengers and trips into a single business-use label. Flight-by-flight and passenger-level analysis may be necessary.
Failing to track personal or entertainment-related use. These uses can affect deductions and other tax consequences.
Using unsupported cost estimates. The tax basis should be documented and adjusted correctly.
Forgetting recapture when use changes. The aircraft’s use should be monitored throughout the applicable recovery period.
Ignoring the sale at the time of acquisition. The future tax treatment should be part of the initial ownership and depreciation plan.
Applying U.S. federal rules to another jurisdiction. State and non-U.S. tax systems can use different depreciation rules and eligibility requirements.

Frequently Asked Questions

Can a business deduct 100% of an aircraft’s cost in 2026?

Some eligible aircraft acquired and placed in service after January 19, 2025, may qualify for a 100% special depreciation allowance. Eligibility is not automatic. The aircraft’s use, acquisition facts, tax basis, and other requirements must be reviewed.

Does a private jet qualify for bonus depreciation?

A private jet may qualify if it meets the applicable statutory requirements. Business aircraft are listed property, so the qualified business-use tests and adequate records are especially important. Personal or mixed use can change the result.

What is the placed-in-service date for an aircraft?

It is generally the date the aircraft is ready and available for its specifically assigned business or income-producing function. Signing the contract or making a payment alone does not necessarily establish that date.

What are the business-use tests for aircraft depreciation?

Accelerated depreciation generally requires the more-than-50% qualified business-use test and the aircraft-specific 25% test under Section 280F in applicable circumstances. The calculations must reflect the aircraft’s actual use and relevant passenger relationships.

Can an aircraft owner claim depreciation if the aircraft is used personally?

The tax treatment depends on the facts and the applicable rules. Personal use can reduce qualifying business use and may make the aircraft ineligible for accelerated depreciation. Other tax consequences may also apply.

What happens if business use falls below the required threshold?

The aircraft may need to be depreciated using straight-line depreciation over the applicable ADS recovery period. Previously claimed excess depreciation may have to be recaptured as income, depending on the circumstances.

Is depreciation recapture relevant when an aircraft is sold?

Yes. Depreciation reduces adjusted tax basis, and the sale may produce taxable gain. Aircraft owners should review depreciation history, sale proceeds, transaction costs, and potential recapture before completing a sale.

What records should an aircraft owner keep?

Keep acquisition and cost records, placed-in-service evidence, flight logs, passenger details, business purposes, expense records, annual business-use calculations, depreciation schedules, and tax elections. Records should be maintained contemporaneously wherever possible.

Conclusion: Plan Aircraft Depreciation Beyond the First Year

Aircraft depreciation can be a valuable part of business aircraft ownership, but the correct treatment depends on more than the aircraft’s purchase price. Tax basis, placed-in-service timing, qualified business use, depreciation elections, and recordkeeping all influence the deduction available.

For 2026, the potential availability of 100% bonus depreciation makes it particularly important to review acquisition and delivery dates carefully. Business aircraft owners should also monitor the applicable 50% and 25% tests, preserve passenger-level flight records, and consider the consequences of future use changes or a sale.

Before claiming a significant aircraft tax write-off, work with a qualified U.S. tax adviser who understands business aviation. A documented, fact-specific analysis can help the taxpayer apply the rules correctly and anticipate the tax consequences over the aircraft’s ownership period.

For advice on ownership, leasing, and compliance considerations, see BermudaFin’s aircraft tax structuring guide. You can also explore the broader aircraft tax guide for related planning topics.

Official and Industry Resources

Disclaimer: This article provides general educational information about U.S. federal tax rules as reviewed on October 11, 2026. It is not legal, tax, accounting, or aviation advice. Rules and guidance may change, and the outcome depends on the facts of each transaction. Consult a qualified professional before making a tax election or filing a return.