The direct answer

Compare written aircraft financing offers using the same principal, assumptions and time horizon. Include fees, remaining balance, rate-reset exposure and maturity obligations. The smallest first payment does not automatically identify the lowest-cost or most suitable structure.

AI-generated aviation editorial illustration.
AI-generated editorial illustration; not an actual aircraft listing or client transaction.

A financing comparison becomes misleading when one offer is summarized by its interest rate and another by its monthly payment. Neither number alone describes the transaction. You need to understand the cash required at closing, the scheduled payments, when terms can change, what remains due at maturity, and the conditions attached to the proposal. A meaningful comparison begins by recording the same categories for every offer.

This resource provides a U.S.-focused educational worksheet for comparing actual written terms. It does not rank lenders, quote current rates, determine eligibility, or interpret your agreement as legal advice. All numerical illustrations are hypothetical. Use the worksheet to identify differences and questions, then confirm the answers with the provider and appropriate advisers before deciding which structure fits the entire aircraft ownership plan.

Start with comparable transaction facts

Write the aircraft price, proposed borrower, ownership, use, financing purpose, and date of each offer at the top. If one proposal assumes a different aircraft, amount, use or borrower, identify that before comparing pricing. A conditional quote for a private piston purchase may not describe the same transaction as a proposal for an entity-owned aircraft used under a different arrangement.

Keep a copy of the supporting document for each field. Mark an absent term as unknown, not zero or unrestricted. If a provider is still evaluating the aircraft or borrower, preserve that condition. The comparison should make it obvious where figures are offered, estimated, modeled or pending. It should not make an incomplete introductory conversation appear as firm and final as a later written proposal.

Reconcile principal and cash at closing

Calculate the proposed principal in dollars, then reconcile it to price, down payment and financed costs. List cash fees separately. Identify the deposit already paid and its treatment on the closing statement. Add tax, inspection, transaction services and other acquisition costs outside the loan if they are not financed. The point is to explain the actual cash requirement, not simply reproduce a down-payment percentage.

For illustration, assume a $300,000 purchase, $60,000 down, and $3,000 in fees. If all fees are financed, principal is $243,000; if paid in cash, principal is $240,000 and closing cash is $3,000 higher before other items. These are invented structures, not offers. Their different payments cannot be compared fairly without also acknowledging the different principal and cash contributions.

Distinguish note rate from APR

The annual note rate is an input to a specified interest and payment calculation. A fee-inclusive annual percentage rate is a different measure requiring appropriate cash-flow and fee treatment. Do not feed a labeled APR into a simple monthly note-rate calculator and assume the resulting payment precisely reproduces the lender’s schedule. Ask which rate the proposal gives and how the disclosed payment was calculated.

Record compounding or accrual assumptions, payment frequency, first payment date, and treatment of fees and irregular periods. A simple fully amortizing monthly model uses the nominal annual note rate divided by twelve. Actual documents can use other conventions. When the modeled payment differs from the written proposal, reconcile the difference instead of changing an input until the output looks close without understanding why.

Compare amortization and maturity separately

Amortization is the period used to calculate principal repayment under the stated schedule. Maturity is when the remaining debt becomes due under the contract. A long amortization can reduce the regular payment while leaving a substantial balance due at an earlier maturity. Write both periods in the worksheet and ask whether any extension or refinance is committed or merely possible.

For a hypothetical loan with a fifteen-year amortization and a five-year maturity, model the scheduled payments for sixty months and the remaining balance at that date. Do not compare it with a fully committed fifteen-year structure using only monthly payment. The earlier remaining balance is a real planning obligation even when the buyer expects a sale or refinance to address it later.

Use a consistent payment calculation

For a simplified fixed-rate monthly loan, let L be principal, r the monthly note rate and n the number of monthly payments. Payment is L × r ÷ [1 − (1 + r) raised to −n]. At zero rate, payment is L ÷ n. Use unrounded intermediate values and round the displayed result only at the end. This is arithmetic for a defined model, not a complete representation of every loan agreement.

Check a zero-rate case first: $120,000 over 120 payments gives $1,000 per month before fees. Then test the proposed assumptions using the amortization calculator. Verify the total interest, final partial payment, and any extra payments against an independent calculation. Preserve the assumptions with an export so another person can reproduce the scenario rather than relying on a screenshot of one payment number.

Include the balance at a common comparison date

Choose a horizon relevant to your decision, such as contractual maturity or an expected ownership period. For each proposal, record cash at closing, scheduled payments through that date, remaining balance and applicable exit costs. A balance is a liability still outstanding; it is not automatically a cost already paid. Show the categories separately so you can compare cash and obligations without double counting.

If resale proceeds are included, state the assumed value and transaction costs independently. The loan calculation does not establish aircraft value or guarantee sale timing. Run a lower-value or delayed-sale case when that matters to the plan. An attractive full-amortization interest total may have limited relevance if your actual question concerns a sale or maturity many years earlier.

Analyze variable-rate provisions in contract terms

For a variable or reset structure, record index, margin, observation method, adjustment interval, rounding, floor, caps if any, payment recalculation and maturity. The Federal Reserve Bank of New York: SOFR methodology describes one published reference-rate methodology; it does not define every contract that uses a SOFR-related measure. Use the benchmark definition in the actual documents, including any averaging or lookback provisions.

Request a lender-worked example and reproduce a simplified rate-increase case using the same balance and remaining schedule. Do not call an initial rate advantage a guaranteed saving. Ask how the increased payment would fit your complete budget if maintenance or other obligations also became more demanding. The fixed-versus-variable guide expands that risk comparison without making a rate forecast.

Check fees, extra payments and prepayment

List origination, documentation, valuation, closing, servicing and other charges actually present in the proposal, identifying who pays and when. Do not assume an omitted fee is zero until confirmed. Compare costs over the horizon you selected. A fee can have a different practical effect on a short holding period than on a loan kept for its full schedule.

Ask what happens with partial extra principal, full payoff, sale and refinancing. Record notice requirements, restrictions, penalties or other charges as stated in the documents. If a calculator assumes extra payments reduce principal immediately, verify that treatment before relying on the result. Do not assign automatic prepayment flexibility to a structure simply because it is fixed or variable.

Compare conditions and permitted use

A financing proposal contains more than economics. Record guarantees, collateral requirements, insurance, permitted uses, reporting obligations, transfer restrictions and closing conditions relevant to the deal. Ask counsel or the lender to explain provisions you do not understand. A lower payment may be less useful if the arrangement does not support the actual intended operation or ownership plan.

AirFleet’s public AirFleet Capital: application process distinguishes underwriting and an approval letter containing further conditions. That is one provider’s description, not a promise about your transaction. Your worksheet should identify the current stage and remaining evidence for each offer. A conditional proposal should not become a final commitment in the comparison simply because its numbers have been entered into a table.

Decide which differences actually matter

After the fields are complete, identify the few differences that affect your decision most: closing cash, recurring payment, reset risk, maturity balance, exit flexibility or a condition affecting use. Evaluate those alongside liquidity and the ownership budget. Avoid choosing a winner using an arbitrary weighted score that conceals a material unresolved obligation behind several small advantages.

Download the blank offer-comparison worksheet. Keep the dated proposals and assumptions with it, update changes, and obtain clarification before proceeding. A strong financing decision is one you can explain in plain language: what cash is required, what payments are due, what can change, what remains at the end, and which conditions still need to be satisfied.

Reconcile a changed proposal before choosing

Suppose an updated offer changes both financed fees and maturity while retaining a similar monthly payment. Compare the complete new version, not just the unchanged headline number. Recalculate principal, cash at closing, payments to the common horizon, remaining balance and applicable exit charges. Ask which old conditions or assumptions have been replaced. Keep the superseded proposal labeled clearly so another participant does not prepare closing documents from it.

This review is especially useful after the specific aircraft is selected or underwriting is completed. The comparison is a living decision record, not a marketing table frozen at the first inquiry. A current source for every material field helps ensure the decision concerns the actual proposal you are being asked to accept.