An interest-only period reduces scheduled principal repayment. Assess what happens when that period ends and how the remaining obligation fits the ownership and exit plan.
Read the payment transition
Request the exact interest-only period, rate calculation, payment dates, amortization after transition and maturity. Identify whether principal begins amortizing later, a balloon remains due or another contractual event occurs. Do not assume interest-only is available for the transaction or that a preliminary illustration describes final terms.
Make unchanged principal visible
If scheduled payments cover interest only and no principal is paid, principal does not decline through those payments. Show that balance prominently rather than treating lower payment as immediate savings. Include fees and any changes in rate separately. Extra principal payments, if contemplated, need to be modeled under the actual contract provisions.
Stress the next stage
Calculate payment after transition at the applicable balance and remaining amortization. For a floating rate, include explicit higher-rate scenarios. Ask whether maturity or a refinance expectation arrives near major maintenance. A cash-flow strategy works only if the owner can address both aircraft expenses and the scheduled debt transition.
Compare with a principal-paying alternative
Use the same holding period, equity and exit assumptions for both offers. Show total payments, cash interest, remaining balance and liquidity retained. Consider what the retained cash is needed for without assuming investment earnings will exceed borrowing cost. The financing choice should remain viable if hoped-for income or resale outcomes do not occur.
Illustrative decision worksheet
Illustrative only: $4 million at an assumed 7% annual interest has a simple monthly interest amount of about $23,333.33 before fees or contract-specific day-count details. After an interest-only year, $4 million remains if no principal was paid. This is arithmetic illustration, not an offered rate or a promise of this structure.
Your next-step checklist
- Transition schedule
- Principal balance
- Rate and payment stresses
- Liquidity purpose
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 original loan-structure context · accessed 2026-10-28