Monthly IO Payment
$2,166.67
Before repayment begins.
Finance
Interest Only Calculator
Estimate monthly IO payment, post-IO payment, and cost delta for mortgage, HELOC, loan, line of credit, and construction draws.
Loan type
Result
Monthly IO Payment
Interest-only keeps the payment low for 60 months before amortization starts.
Total IO Cost
$130,000.00
Across 60 months
Payment After IO
$2,700.83
Repayment over 300 months
Fully Amortizing Payment
$2,528.27
Month 1 baseline
Delta vs Full Amortization
+$172.56
Monthly gap
Total Cost Delta
+$30,067.95
IO path minus baseline
Payment timeline
Monthly payment curve.
IO months are shaded when a repayment comparison is available. Tooltips show draw rows and balances.
Monthly IO payment follows the balance. Construction draws change the payment month by month.
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