Free financing scenario tool
Balloon payment calculator
Estimate the scheduled payment, principal remaining at the balloon date, and interest paid before that date from the loan terms you enter.
The short answer
Last updated: July 2026
Estimate a balloon by calculating the payment from the loan’s amortization period, applying those payments through the earlier balloon date, and reporting the remaining principal. The result is a scenario—not a payoff quote—because the note and date-specific payoff statement control accrued interest, fees, and the amount required to satisfy the loan.
Primary references on this page:
·
CFPB Regulation Z: Loan Estimate disclosuresAfter the estimate:
Join the waitlistFinancing scenario
Estimate the payment and balloon together.
Model scheduled principal and interest, then see the principal remaining when the balloon comes due.
Original principal
$
Annual interest rate
%
Amortization period
years
Balloon due after
years
Input-driven result
Your inputs
Formula
Result below
Monthly principal & interest
$1,799
Estimated balloon balance
$279,163
After 60 modeled payments
Interest before balloon
$87,082
Your calculation
$300,000 amortized over 360 months, with 60 scheduled payments, leaves $279,163 of modeled principal.
Estimate based on your inputs. Not a promise of results.
This is an amortization scenario, not a payoff statement or an approval. The signed note and a date-specific creditor or servicer payoff statement control the amount due.
How it works
How this tool works.
Balloon loans can look affordable month to month because their payment is calculated over a longer amortization period than the time allowed before full payoff. This tool makes that mismatch visible.
Use the signed note for the actual payment rules and request a payoff statement before sending funds. Do not assume a refinance will be available when the balloon comes due.
Make the result useful
Read the monthly payment and balloon together
The monthly payment answers what is scheduled during the amortization period. The balloon answers how much modeled principal remains after the last scheduled payment before full payoff. A low payment is not evidence that the maturity amount is affordable.
The CFPB describes refinancing risk directly: a borrower should not assume future refinancing will be available. Track the balloon date, estimated balance, title and lien issues, property condition, liquidity, and at least one exit that does not depend on a new approval.
Calculation lens
Monthly P&I uses the amortization period; balloon balance is the principal remaining after payments through the balloon month.
A scenario estimate of scheduled P&I, remaining principal, and interest—not approval, advice, or a payoff statement.
The tool excludes irregular payments, adjustable rates, interest-only periods, daily accrual differences, fees, escrow, default amounts, and contractual payoff rules.
Questions landlords ask
Questions about this tool and its limits.
Built by a landlord who's done every one of these jobs by hand.
Aptoria was built by an owner-operator managing a Brooklyn portfolio — the 11pm calls, the awkward rent texts, the April receipt-pile — not by a software team guessing at the problem.
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