Loan Amortization Calculator - Information
Information Loan Amortization Calculator

Generate a complete loan amortization schedule with support for interest-only periods, deferred payments, fixed principal repayment structures, and flexible payment frequencies.

What you'll enter

  • Client details (name, account number)
  • Loan amount, drawdown date, total term and amortization period (months)
  • Annual interest rate (%) and payment frequency (monthly, semi-monthly, biweekly, weekly)
  • Interest start date and principal repayment start date (months from drawdown)
  • Pre-amortization payment type (interest-only, fixed principal reduction, or no payment/deferral)
  • Regular payment structure (blended P+I or fixed principal + interest)
  • Optional: custom fixed principal amount, schedule date range, payment rounding

What you'll get

  • Complete payment-by-payment amortization schedule showing date, phase, payment amount, interest, principal, and remaining balance
  • Summary statistics: regular payment/principal amount, number of interest-only vs. amortizing payments, maturity date
  • Total interest paid, total principal paid, and final balance
  • Phase indicators showing "Interest Only", "Deferral", or "Amortizing" status for each payment
  • CSV export for spreadsheet analysis
  • Print-friendly format for client presentations

Notes

  • Interest-only periods allow borrowers to pay only interest charges before principal repayment begins.
  • Deferred payment (no payment) option compounds unpaid interest into the principal balance.
  • Fixed principal structure calculates the regular principal amount based on remaining balance when amortization starts, divided by remaining payments.
  • Blended payment structure uses standard amortization formula to create equal payments throughout the amortization period.
  • All dates are calculated from the drawdown date. Payment schedule honors the selected frequency (12, 24, 26, or 52 payments per year).
  • Results update when you click "Calculate" - review your inputs before generating the schedule.

↓ Scroll down to the calculator to enter your numbers.

SBN Loan Amortization Calculator

SBN Loan Amortization Calculator

Inputs Loan & Schedule Parameters All dates are based on Drawdown Date.
Regular Payment
Interest Only Pymts
Amortizing Pymts
Maturity Date
Output Amortization Schedule
# Date Phase Payment Interest Principal Balance
Totals 0.00 0.00 0.00 0.00