Mortgage Comparison Calculator - Compare Mortgage Rates & Loan Options
Free mortgage comparison calculator & home loan comparison tool. Compare different mortgage options, evaluate loan terms, analyze monthly payments, and find the best home loan with comprehensive analysis. Our calculator helps homebuyers compare mortgage rates using side-by-side analysis of interest rates, terms, discount points, total costs, and monthly payments for optimal home financing decisions.
Last updated: October 19, 2025
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Property Details
Loan Amount: $320,000
Mortgage Option 1
1 point = 1% of loan amount
Mortgage Option 2
Best Option1 point = 1% of loan amount
Comparison Results
Mortgage 1 Summary
Mortgage 2 Summary
Potential Savings
$238,881
by choosing Mortgage 2
Analysis:
Mortgage 2 offers better value with lower total cost.
Mortgage Comparison Tips:
- • Lower total cost = best long-term value
- • Lower monthly = better cash flow today
- • Points reduce rate but cost upfront (1 point = 1% of loan)
- • Shorter terms = more interest savings, higher payments
Mortgage Comparison Calculator Types & Home Loan Tools
Key Difference
Payment vs Interest
Balance affordability and savings
Rate Types
Fixed, 5/1, 7/1 ARM
Evaluate rate certainty vs savings
Break-Even
5-7 Years Typical
Determines if points are worthwhile
Compare
3-5 Lenders
Find best rate and terms available
Analysis
Savings vs Costs
Determine if refinancing makes sense
Limit
$766,550 (2024)
Higher limits in expensive markets
Quick Example Result
Comparing $320K loan: 30-year at 6.5% vs 15-year at 6.0% with 1 point:
Best Option
Mortgage 2
Total Savings
$238,881
How Our Mortgage Comparison Calculator Works
Our mortgage comparison calculator analyzes multiple loan options side-by-side using standard amortization formulas. The calculation applies mortgage finance principles to compare monthly payments, total interest, and lifetime costs including discount points for comprehensive decision-making.
The Mortgage Comparison Formula
Monthly Payment = P × [r(1 + r)^n] / [(1 + r)^n - 1]Where: P = Loan Amount, r = Monthly Rate, n = PaymentsTotal Cost = (Monthly × Payments) + Points CostPoints Cost = Loan Amount × Points %The calculator computes monthly payments using the standard amortization formula, then calculates total cost including interest and any discount points purchased. It compares both mortgages to identify which saves more money long-term, while also showing monthly payment differences for cash flow planning.
Shows side-by-side comparison of payments, interest, and total costs over loan life
Mathematical Foundation
Mortgage comparison is based on loan amortization mathematics from financial theory. Each mortgage payment includes both principal and interest, with early payments being mostly interest and later payments mostly principal. Comparing total cost reveals the true expense difference between options—a shorter term has higher monthly payments but dramatically lower total interest. Discount points add complexity: paying upfront (1 point = 1% of loan) reduces the rate by ~0.25%, requiring break-even analysis to determine if the upfront cost justifies long-term savings.
- Lower interest rates significantly reduce total cost over 15-30 years
- Shorter loan terms have higher payments but save tens of thousands in interest
- Discount points require 5-7 years to break even typically
- Monthly payment affects affordability; total cost affects wealth
- Even 0.5% rate difference saves $30,000+ on typical mortgage
- APR comparison accounts for rate and fees together
Sources & References
- Consumer Financial Protection Bureau - Mortgage Shopping GuideOfficial guidance on comparing mortgage offers
- Freddie Mac - Mortgage Rate Survey and TrendsWeekly national mortgage rate data and analysis
- CFPB - Home Loan ToolkitStep-by-step guide to getting a mortgage
Need help with other mortgage calculations? Check out our closing cost estimator and PMI removal calculator.
Get Custom Calculator for Your PlatformMortgage Comparison Examples
Mortgage Options:
Option 1: 30-Year Fixed
$320K at 6.5%, 0 points
Monthly: $2,023
Option 2: 15-Year Fixed
$320K at 6.0%, 1 point
Monthly: $2,700
Cost Comparison:
- Option 1 total cost: $728,142
- Option 2 total cost: $489,262
- Interest savings: $242,081
- Best option: Mortgage 2
Result: Mortgage 2 offers better value with lower total cost.
Total savings: $238,881. 15-year option builds equity faster and saves significantly on interest despite higher monthly payment.
With Points Example
6.5% no points vs 6.0% with 2 points
Break-even: ~7 years
ARM Comparison
30-year fixed 6.5% vs 7/1 ARM 5.75%
ARM saves if selling within 7 years
Frequently Asked Questions
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