Heavy Equipment Write-Offs: Contractor Tax Checklist
By AE Tax Advisors · Published 2026-08-05
Updated November 8, 2026.
A contractor may accelerate depreciation on eligible equipment, but the purchase price, down payment and usable tax deduction are different numbers. Confirm the asset's tax owner, service date, business use and loss limits before estimating a write-off.
Classify the machine and the financing
Excavators, loaders, cranes, tools, trailers and vehicles can have different asset-class and vehicle rules. Use the actual equipment and business activity to choose the recovery period. A contract called a lease can require a tax-ownership analysis; a true rental generally produces rent expense rather than lessee depreciation.
For a financed purchase, loan principal is not a separate deduction. Interest, fees and depreciation have their own treatment. Include future repayments in the cash-flow model rather than comparing only the first down payment with a projected tax benefit.
Apply current deduction limits
For tax years beginning in 2026, Section 179 has a $2,560,000 federal limit, a phaseout starting at $4,090,000 of qualifying property and a business-income restriction. Bonus depreciation generally provides a 100% allowance for qualifying property acquired and placed in service after January 19, 2025, subject to its separate rules.
Used equipment is not automatically excluded, but related-party transactions, prior use, acquisition rules and other restrictions matter. State treatment can differ from federal treatment. Compare the whole asset list and elections, not only one machine.
Review pickups and other vehicles separately
Check the manufacturer's weight rating, vehicle design, cargo area and actual business use. A weight or bed-length test is not proof that the entire price is deductible. Passenger-vehicle limits, the SUV restriction, listed-property rules and business-use allocation may apply.
Commuting and personal use generally do not become business mileage because the vehicle carries the company's name. Keep credible use records and review any special vehicle exceptions that actually apply.
Confirm owner-level loss capacity
Corporate borrowing does not automatically increase an S corporation shareholder's debt basis. Direct bona fide shareholder debt and stock basis have separate rules. A guarantee generally does not by itself create debt basis.
Do not move equipment into another entity solely to bypass a limitation without modeling the transfer, rent, related-party rules and both entities' returns. A valid equipment deduction can still be suspended under basis, at-risk or other loss rules.
Document the ready-for-use date and later disposal
Keep delivery, commissioning, inspection and availability records. Paying in December does not establish December service if the machine is not ready and available for its intended use.
A later sale or trade-in is a separate tax event. Section 1031 generally does not cover equipment exchanges. Calculate proceeds, adjusted basis and potential Section 1245 recapture, then determine the new asset's basis and eligible deduction separately.
Review the quote and projected return before committing. See leasing versus buying for the cash-flow comparison.
Frequently Asked Questions
Can I write off every excavator immediately?
No. Asset eligibility, dates, elections, business use and entity and owner limits determine the deduction.
Does my corporation’s equipment loan give me shareholder basis?
Not automatically. Stock and direct shareholder debt basis follow separate rules.
Does trading equipment avoid recognition of gain?
Generally not under Section 1031, which now applies to qualifying real property. Compute the equipment disposal separately.
Sources and update notes
Source references and the changes described in this guide were checked November 8, 2026. Published by AE Tax Advisors; see our editorial policy. Examples are illustrative and require review of your records before filing.