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Mortgage Calculator

Calculate your monthly mortgage payments, determine home affordability, analyze refinance options, and understand PMI costs. Get detailed amortization schedules and break-even analysis for informed home buying decisions.

Comprehensive Mortgage Calculator for Homebuyers & Homeowners

Complete Payment Breakdown

See principal, interest, taxes, insurance, PMI, and HOA fees in one view

Affordability Calculator

Determine how much house you can afford based on your income and debts

Refinance Analysis

Calculate potential savings and break-even point for refinancing

Extra Payment Planner

See how extra payments can save you thousands and shorten your loan term

Mortgage Formulas & Real-World Examples

Essential Formulas

Monthly Payment (P&I):
M = P [r(1+r)^n] / [(1+r)^n - 1]

Where:
M = Monthly Payment
P = Principal Loan Amount
r = Monthly Interest Rate
n = Total Number of Payments

Loan-to-Value (LTV):
LTV = (Loan Amount / Home Price) × 100

Common Examples

$400,000 Home:
20% down @ 6.5% = $2,023/month (P&I)

$300,000 Home (First-time):
5% down @ 6.5% = $1,896/month + $125 PMI

Refinance:
7.5% to 6.5% on $300k = $200/month savings

Extra Payments:
$200/month extra saves $64,000 in interest

Mortgage Tips:

20% Down Avoids PMI: Save hundreds monthly by putting down 20% or more. Shorter Terms Save Thousands: 15-year mortgage saves ~50% in interest vs 30-year. Refinance When Rates Drop 1%: Typically makes financial sense when rates drop 1% or more. Extra Payments Early: The most impactful time for extra payments is early in the loan term.

Trusted by Homebuyers & Homeowners
Real users making smarter mortgage decisions with our calculator

'This mortgage calculator helped me understand all the hidden costs of homeownership. The breakdown of taxes, insurance, and PMI was eye-opening!'

- Sarah M., First-time Homebuyer

Mortgage Calculator FAQs
Answers to common questions about mortgage calculations
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Common Scenarios
$400K @ 6.5% = $2,023/mo
15-year @ 6.0% = $2,532/mo
3% down = +$125 PMI
$200 extra = $64K saved
Mortgage Tips
20% down avoids PMI
15-year saves 50% interest
Extra payments help most early
Refinance when rates drop 1%
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