Loan payoff and tax basis are different. A seller can have modest closing cash and still face tax consequences from prior depreciation or a change in use.
Separate debt from adjusted basis
The amount owed to a lender measures an obligation, not the aircraft tax basis. The selling owner should obtain the accountant basis schedules rather than subtracting the loan balance to estimate taxable gain. Closing proceeds also reflect commissions, fees and adjustments. Keep financing, settlement cash and tax calculations in distinct rows so the model does not imply that debt repayment itself determines gain or loss.
Review disposition and use-change issues
IRS Publication544 discusses sales of depreciable property and recapture. Publication946 describes possible ordinary-income recapture when business-aircraft use tests cease to be satisfied during the applicable period. These are related but distinct review points. A sale forecast should not assume all gain receives a favorable capital-gain rate, and a change from business to predominantly personal use can require advice even before a sale occurs.
Maintain federal and California schedules
Different deduction histories can produce different adjusted bases and tax results. Ask the preparer to reconcile both schedules, improvements and prior changes. If an aircraft is traded, gifted, transferred between entities or sold to a related party, request specific advice for that transaction. An informal statement that all proceeds are being rolled into another jet does not establish tax deferral; federal like-kind exchange rules generally concern qualifying real property.
Reserve for the unresolved outcome
Read the seller calculator's result as estimated proceeds before unmodeled income taxes. Include only adviser-supplied tax amounts in a separate scenario. Account for the time between closing and tax payments so cash is not committed twice to the next purchase. Retain final settlement records and basis support for return preparation rather than relying on a preliminary broker net sheet.
A practical planning exercise
Illustrative issue: an owner sells a jet for more than its adjusted tax basis but uses most closing funds to satisfy debt. Limited cash received does not establish limited taxable gain; the accountant must analyze basis, proceeds and recapture separately.
Your next-step checklist
- Obtain both basis schedules.
- Separate payoff from tax analysis.
- Review recapture and changed use.
- Reserve for tax payments.
Sources & further reading
Primary sources support the relevant facts. Our planning questions and illustrative exercises are editorial analysis; they do not replace transaction-specific advice.
- Publication 544: Sales and Other Dispositions of Assets · accessed 2026-10-28
- Publication 946: How To Depreciate Property · accessed 2026-10-28
- 2025 Form 3885A instructions · accessed 2026-10-28