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Mortgage Amortization Calculator

Generate a detailed mortgage amortization schedule to track principal and interest.

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Calculation Parameters

Specify your inputs below.

Calculated Result

Required Monthly Payment $1,498.88
Total Interest Paid Over Term $289,595.47
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Expert Tip

Making just one extra mortgage payment per year can shave years off your amortization schedule and save thousands in interest.

How this Calculator Works

This calculator generates a detailed amortization schedule for a home loan. It breaks down each monthly payment into principal repayment and interest expense, showing the declining loan balance over time.

Formula & Methodology

Interest Portion = Outstanding Principal * (Annual Interest Rate / 12 / 100) Principal Portion = Total Monthly Payment - Interest Portion Remaining Principal = Outstanding Principal - Principal Portion

Step-by-Step Calculation Example

Here is a step-by-step example showing how the calculations are performed:

A borrower has a remaining loan balance of $250,000 at a 6% annual interest rate, with a fixed monthly payment of $1,500. 1. Calculate interest portion: $250,000 * 0.005 = $1,250. 2. Calculate principal portion: $1,500 - $1,250 = $250. 3. Calculate new principal: $250,000 - $250 = $249,750. Result: The new outstanding loan balance is $249,750.

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Detailed Insights & Expert Guide

ℹ️ About this Calculation

This real estate investment and mortgage calculator evaluates principal & interest monthly payments, capitalization rates (Cap Rate), Cash-on-Cash returns, property tax liabilities, Loan-to-Value (LTV) ratios, and refinance break-even schedules.

Variable Glossary

Input

Property & Loan Data

Purchase price ($), down payment %, mortgage interest APR %, loan term (years), gross rental income, or operating expenses.

Parameter

Real Estate Yield

Net Operating Income (NOI), Cap Rate %, Cash-on-Cash yield %, monthly debt service (P&I), and total closing costs.

How to Calculate Step-by-Step

1

Step 1

Enter target home purchase price, down payment percentage, and loan term duration.

2

Step 2

Input property taxes, homeowners insurance, HOA fees, vacancy rate %, and maintenance reserve estimates.

3

Step 3

Review full amortization schedule breakdown, cash-on-cash annual return, or debt-to-income (DTI) qualification score.

FAQ

What is Capitalization Rate (Cap Rate) in real estate?
Cap Rate = Net Operating Income (NOI) / Current Property Value. It measures an unleveraged property's natural rate of return independent of debt financing.
How does Cash-on-Cash Return differ from Cap Rate?
Cash-on-Cash Return calculates Annual Net Pre-Tax Cash Flow divided by Total Out-of-Pocket Cash Invested (down payment + closing costs + rehab). It incorporates debt leverage effects.
What DTI ratio limits do mortgage lenders enforce?
Most conventional lenders prefer a front-end housing DTI under 28% and a total back-end debt DTI under 36% to 43% (up to 50% for FHA/VA backed loans).