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  1. Finance Tools
  2. Prepayment Calculator

Prepayment Calculator

Calculate savings from mortgage prepayment with options to shorten term or reduce monthly payment.

FinanceGeneralCalculateAnalyze
4.8
Prepayment Calculator
Calculate savings from mortgage prepayment with options to shorten term or reduce monthly payment.
LPR Reference
Thousand (K)

Key Features

Prepayment Interest-Savings Estimate

Shows total-interest differences before and after prepayment so you can quantify potential savings quickly.

Amortized + Equal-Principal Modes

Supports two common mortgage repayment methods for apples-to-apples comparison under different amortization logic.

Shorten Term vs Reduce Payment Comparison

Switch strategies to compare remaining term, monthly payment, and total interest in one view for better decision-making.

Local Privacy-First Calculation

All mortgage parameters are processed in-browser and never sent to servers.

Use Cases

Evaluate Partial Prepayment Plans

Before making a lump-sum payment, enter current loan parameters and compare "shorten term" vs "reduce monthly payment" side by side.

Compare Amortized vs Equal-Principal Paths

Run the same mortgage under amortized and equal-principal modes to see differences in total interest and remaining term.

Balance Cash Flow and Payment Pressure

Use the reduced-payment mode to estimate monthly cash-flow relief and decide how much liquidity to keep for household expenses.

Compare Prepayment vs Refinance

Estimate interest savings from prepayment first, then compare against refinance costs to support a data-driven loan optimization decision.

MoreKits Prepayment Calculator shows how extra mortgage payments reduce interest and shorten loan terms. Enter your loan details and an additional payment amount to see potential savings. Use it to compare repayment strategies. Scenario modeling stays in the browser session.
Guide
Long-form walkthrough with practical tips.
How to Calculate Savings from Loan Prepayment — Read the tutorial

How to Use the Mortgage Prepayment Calculator

1

Choose Input Path and Enter Core Loan Data

Pick either "From Original Loan" or "From Current Balance", then enter loan amount/term/months paid or remaining balance/remaining months/current rate.

2

Set Prepayment Amount and Repayment Strategy

Enter your prepayment amount, choose amortized or equal-principal repayment, and select either "Shorten Term (Same Payment)" or "Reduce Payment (Same Term)".

3

Compare Outputs and Explain Interest Savings

Review before/after monthly payment, remaining months, and total interest. Focus on "Interest Saved" to decide which strategy fits your cash-flow goal.

FAQ

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