Choose a payment and maturity structure with an explicit repayment plan.
Separate two different clocks
The amortization period is the schedule used to calculate periodic principal and interest. The contractual maturity can arrive earlier, requiring the remaining balance to be paid. A fully amortizing loan reaches a zero scheduled balance by its maturity if paid as agreed; a balloon structure may not. Obtain the actual contract's treatment of the final regular payment and maturity amount rather than rely on a calculator label.
Work the illustrated balance
A fictional $4 million loan at a constant 7% nominal annual rate amortized over 180 monthly payments has a scheduled payment of about $35,953.13. After 60 payments, approximately $3,096,512.08 remains using full-precision calculations. If maturity is then, the remaining debt must be addressed under the contract. The regular payment is not a plan for repaying that amount, and refinancing is not guaranteed.
Compare on the same exit date
For a planned five-year sale, show total scheduled payments, fees, selling costs and debt payoff for each offer. A loan with a smaller payment may leave more debt outstanding. The sale proceeds should be net of that payoff. Do not count all principal payments as economic expense and also ignore the equity difference when comparing structures.
Stress-test the repayment plan
Model a lower aircraft resale value, delayed sale and a refinance that is unavailable or offered on less favorable terms. Confirm whether prepayment charges or covenants affect an earlier exit. A borrower with enough liquidity to retire the balloon has a different risk profile from one depending entirely on a future lender. Identify how much of the exit depends on future financing and retain a contingency if that financing is unavailable.
Use the exact lender documents
Ask the lender to identify amortization, maturity, interest mechanics, payment dates and any fees or penalties. Have the financing and legal teams reconcile the term sheet with final documents. An illustrative calculator can explain remaining balances, but it does not replace a lender payoff statement or guarantee that the loan is available for the aircraft and buyer.
Your next-step checklist
- Record amortization and maturity separately.
- Show the remaining balance at maturity.
- Compare net equity at the same sale date.
- Test lower value and unavailable refinancing.
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.
- AOPA aircraft financing FAQ · accessed 2026-10-28