Most homebuyers compare mortgage offers by looking at the interest rate and stopping there. This is a mistake that can cost tens of thousands of dollars. Two lenders quoting the same rate can have dramatically different total costs once you account for origination fees, discount points, lender credits, and third-party charges. This guide shows you exactly how to compare mortgage offers properly, using the same math that loan officers use — so you walk into the closing table knowing you have the best deal.
For broader guidance on how much home you can afford, see our Mortgage Affordability Guide.
The interest rate is the cost of borrowing the principal, expressed as a percentage. It determines your monthly payment amount. A $400,000 loan at 6.75% costs $2,594 per month (principal and interest only).
The APR (Annual Percentage Rate) includes the interest rate plus certain upfront fees and costs, spread across the loan term to express total borrowing cost as a single annual percentage. APR is always equal to or higher than the interest rate. The Truth in Lending Act requires lenders to disclose APR so borrowers can compare total costs.
| $400,000 Loan, 30-Year Fixed | Lender A | Lender B |
|---|---|---|
| Interest rate | 6.75% | 6.625% |
| Points | 0 | 1 ($4,000) |
| Origination fee | $1,200 | $1,800 |
| Other lender fees | $850 | $750 |
| Total upfront cost | $2,050 | $6,550 |
| Monthly payment (P&I) | $2,594 | $2,562 |
| Monthly savings vs Lender A | — | $32/month |
| APR | 6.81% | 6.83% |
Lender B has a lower rate but a higher APR because of the point and higher fees. The lower monthly payment saves $32/month, but the extra $4,500 in upfront costs takes 141 months (nearly 12 years) to recoup. If you plan to move or refinance within 10 years, Lender A is the better deal despite the higher rate. APR captures this nuance; the rate alone does not.
One discount point equals 1% of the loan amount and typically reduces the interest rate by approximately 0.25 percentage points (though this varies by lender and market conditions). Points are prepaid interest — you pay more upfront in exchange for a lower rate over the life of the loan.
| Scenario ($400K Loan, 30-Year) | No Points | 1 Point | 2 Points |
|---|---|---|---|
| Upfront point cost | $0 | $4,000 | $8,000 |
| Interest rate | 6.75% | 6.50% | 6.25% |
| Monthly payment (P&I) | $2,594 | $2,528 | $2,462 |
| Monthly savings | — | $66 | $132 |
| Break-even | — | 61 months (~5 years) | 61 months (~5 years) |
| Total interest (30 years) | $533,880 | $510,080 | $486,320 |
| Net savings after 30 years | — | $19,800 | $39,560 |
Break-even = point cost ÷ monthly savings. After the break-even point, you save money every remaining month. Use the Mortgage Points Calculator to run your exact scenario.
The decision framework: If you are confident you will keep the mortgage for longer than the break-even period, buying points saves money. If there is any chance you will move, refinance, or pay off the loan early, skip the points and keep your cash. The average American stays in a home for approximately 13 years, according to the National Association of Realtors, but refinancing can occur much sooner if rates drop.
Within three business days of receiving your mortgage application, every lender must provide a standardized Loan Estimate form (required by the CFPB under the TILA-RESPA Integrated Disclosure rule). This three-page document presents all costs in a uniform format, making apples-to-apples comparison possible.
The key sections to compare across lenders:
Page 1 — Loan Terms and Projected Payments: Interest rate, monthly principal and interest, whether the rate can increase, and projected total monthly payment (including taxes, insurance, and PMI if applicable).
Page 2 — Closing Cost Details: This is where most of the comparison value lives. Costs are divided into three categories: (A) Loan costs — origination charges, discount points, and third-party services the lender selected. (B) Services you can shop for — title insurance, survey, pest inspection. (C) Taxes and government fees — these are fixed regardless of lender.
Page 3 — Comparisons: Includes APR, total interest cost, and total payments over the loan term. The "In 5 Years" comparison shows how much you will have paid in total and how much principal you will have paid down — useful for comparing if you plan to sell or refinance within that timeframe.
Mortgage offers are not take-it-or-leave-it. Several components are negotiable:
Origination fee: This is the lender's profit margin on the loan. It is typically 0.5–1% of the loan amount. Some lenders charge zero origination and make their profit from a slightly higher rate. Others charge origination and offer a lower rate. Ask each lender to show you both options.
Rate: If you have a competing Loan Estimate from another lender, show it and ask if they can match or beat it. Many lenders have pricing flexibility and will reduce the rate by 0.125% or waive a fee to win your business.
Lender credits: Some lenders offer credits that offset closing costs in exchange for a slightly higher rate. If you are cash-constrained at closing, this can make sense. But run the total cost comparison — the higher rate costs more per month for as long as you hold the loan.
Rate lock period: If your closing is more than 30 days out, you may need a 45 or 60-day lock, which some lenders charge extra for. Others include longer locks at no additional cost. Ask about lock extension fees and float-down provisions (which let you take a lower rate if the market drops after you lock).
The most reliable way to compare mortgage offers is the total cost method: add all upfront costs to the total interest paid over your expected holding period.
Total cost = Upfront fees + (Monthly payment × number of months you expect to hold the loan)
Run this calculation at multiple time horizons (5 years, 10 years, 15 years, 30 years) to see which offer wins at each point. A loan with higher upfront costs and lower rate becomes cheaper over time, while a loan with zero upfront costs and higher rate is cheaper in the short term. Your expected holding period determines which is the better deal.
Use the Mortgage Calculator to model monthly payments, and the Amortization Table Calculator to see the exact principal and interest breakdown for each month of the loan.
Comparing rate without comparing fees. A 6.5% rate with $8,000 in fees is not better than 6.625% with $2,000 in fees unless you hold the loan for a very long time. Always compare APR and total cost, not just the rate.
Ignoring PMI. If your down payment is less than 20%, most conventional loans require Private Mortgage Insurance (PMI), which typically costs 0.5–1% of the loan amount annually. PMI adds $167–$333/month on a $400,000 loan. Some lenders offer lender-paid PMI in exchange for a higher rate. Compare the all-in monthly cost, including PMI, across offers.
Not shopping enough. Research from Freddie Mac found that borrowers who obtained five quotes saved an average of $2,914 over the life of the loan compared to those who obtained just one quote. Mortgage pricing varies significantly between lenders on the same day for the same borrower profile.
Comparing different loan types. A 15-year fixed at 6.0% has a lower total cost than a 30-year fixed at 6.75%, but the monthly payment is significantly higher. Only compare offers for the same loan product (same term, same type). See our 15 vs 30 year comparison for a detailed analysis of term length trade-offs.
Run the numbers for any mortgage scenario. Use the free Mortgage Calculator to compare monthly payments, total interest, and amortization schedules side by side — no signup required.
Related tools: Mortgage Points Calculator · APR Calculator · Amortization Table Calculator · Debt-to-Income Calculator · FHA Loan Calculator