Mortgage and Loan Comparison Calculator
Compare two loan offers side by side to see which lender provides the lowest monthly payment, when discount points break even, and how much you save over the full term.
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How comparing mortgage offers saves thousands
Shopping for a home loan rarely comes down to interest rates alone. Lenders frequently structure offers with competing tradeoffs: one institution might propose a slightly higher interest rate with low or zero lender closing credits, while another advertises a lower headline rate that requires paying thousands of dollars upfront in discount points and origination fees.
The true test of which mortgage is cheaper requires calculating your break-even point. When you pay upfront points to purchase a lower interest rate, you are spending money today to reduce your monthly payment tomorrow. Dividing the extra upfront fee by your monthly payment savings reveals the exact number of months required before the rate discount pays for itself.
If you plan to sell the home, refinance, or relocate before reaching that break-even month, paying discount points loses you money. Conversely, if you remain in the property past the break-even horizon, every subsequent month delivers pure interest savings that compound into tens of thousands of dollars over the full 15 or 30-year term.
This loan comparison calculator computes the exact principal and interest payments for two competing offers, evaluates upfront closing fee differentials, and calculates your precise break-even month and lifetime borrowing cost.
The loan comparison and break-even formula
The break-even point is determined by dividing the difference in upfront fees by the monthly payment savings:
| Symbol | Meaning |
|---|---|
Fees Difference |
Extra closing costs paid upfront ($6,000 − $2,000 = $4,000 in baseline example) |
Payment Difference |
Monthly principal and interest savings ($2,528.27 − $2,398.20 = $130.07/mo) |
Break-Even Month |
$4,000 ÷ $130.07 = 31 months (2.6 years to recover upfront fees) |
Lifetime Savings |
Net total savings over full 30-year term ($42,825.20 in baseline example) |
If the lower interest loan also carries equal or lower fees, it breaks even immediately with zero recovery wait.
Worked loan comparison example
Comparing a $400,000 30-year mortgage at 6.50% with $2,000 in fees against a 6.00% loan with $6,000 in fees (buying down the rate with $4,000 extra upfront):
| Comparison Metric | Financial Figure |
|---|---|
| Option A monthly payment (6.50% rate) | $2,528.27 |
| Option B monthly payment (6.00% rate) | $2,398.20 |
| Monthly payment savings with Option B | $130.07 |
| Upfront fee differential paid today | $4,000.00 |
| Break-even timeline to recover points | 31 months |
| Total lifetime savings over 30 years | $42,825.20 |
In this scenario, paying $4,000 extra upfront breaks even after 31 months. If you keep this mortgage for more than 2.6 years, Option B delivers over $42,800 in total interest savings.
Estimates only. Your lender's figures may differ because of fees, escrow and rounding.
Tips for comparing mortgage loan estimates
Always compare official Loan Estimates on Page 2
Federal TRID regulations require every lender to provide a standardized Loan Estimate. Compare Section A (Origination Charges) and Section J (Total Closing Costs) side by side to ensure you are comparing identical loan structures.
Match the interest rate lock duration
Verify that both quotes reflect the same lock period (such as 30, 45, or 60 days). A floating rate quote will often appear artificially lower than a locked rate offer.
Consider your realistic time horizon in the property
Average American homeowners refinance or move every 5 to 7 years. If your break-even horizon on discount points exceeds 4 or 5 years, paying upfront points is usually suboptimal.
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Frequently asked questions
How do I calculate the break-even point when buying mortgage discount points?
To calculate your break-even point, divide the total dollar cost of the discount points by the monthly payment savings generated by the lower interest rate. The result is the exact number of months needed to recover the cost.
Is a 15-year mortgage always better than a 30-year mortgage?
A 15-year mortgage carries lower interest rates and saves massive lifetime interest, but requires significantly higher monthly payments. A 30-year loan offers payment flexibility, allowing you to make voluntary extra payments without mandatory contractual pressure.
What is the difference between APR and interest rate on a mortgage quote?
The interest rate is the cost of borrowing the loan principal. The Annual Percentage Rate (APR) reflects the broader cost of credit, bundling the interest rate, origination charges, discount points, and lender fees into a single annualized figure.
Can I negotiate mortgage closing costs between competing lenders?
Yes. Lenders have significant discretion over origination fees, application charges, and processing fees in Section A of your Loan Estimate. Presenting a competing quote frequently prompts lenders to match or waive lender fees.