Interest-Only Loan Calculator

Calculate real-time interest-only loan payments with detailed amortization schedule and payment comparisons

Real-Time Calculations Amortization Schedule Payment Comparison Visual Charts Export Data Payment Timeline Extra Payments Detailed Summary Payment Alerts Share Results

Loan Parameters

$
Enter the total loan amount
%
Annual percentage rate (APR)
yrs
Total duration of the loan
yrs
Period where you pay only interest
$
Optional additional payment
$
For mortgage calculations

Payment Comparison

Interest-Only Payment
During interest-only period
$937.50
Standard Loan Payment
Principal + interest (30-year fixed)
$1,266.71
Payment After Interest-Only Period
When principal payments begin
$1,583.51

Loan Summary

Monthly Payment (Interest-Only)
$937.50
Total Interest Paid
$225,000
Interest Savings vs Standard
$0
Payoff Date
Sep 2053

Amortization Schedule

Year Interest Paid Principal Paid Remaining Balance

Payment Timeline

How to Use the Interest-Only Loan Calculator

Understanding Interest-Only Loans

Interest-only loans allow you to pay only the interest on the principal balance for a set period, typically 5-10 years. This results in lower initial payments compared to traditional amortizing loans. After the interest-only period ends, payments increase significantly as you begin paying both principal and interest.

Key Input Parameters

  • Loan Amount: The total amount you plan to borrow
  • Interest Rate: Annual percentage rate (APR) of the loan
  • Loan Term: Total duration of the loan in years
  • Interest-Only Period: Years during which you'll pay only interest
  • Extra Payments: Additional payments to reduce principal faster

Interpreting Results

The calculator provides several key outputs:

  • Interest-Only Payment: Your monthly payment during the interest-only period
  • Post-Period Payment: Higher payment after interest-only period ends
  • Total Interest: Total interest paid over the life of the loan
  • Amortization Schedule: Year-by-year breakdown of payments
  • Payment Comparison: How your loan compares to traditional loans

Strategic Considerations

Interest-only loans can be beneficial for investors expecting property appreciation or those with irregular income. However, they carry risks including payment shock when the interest-only period ends and no equity buildup during the initial period.

Pro Tip

Consider making extra payments during the interest-only period to reduce your principal balance. Even small additional payments can significantly reduce your total interest paid and shorten your loan term.