Refinance examples: why the lowest payment is not always the best deal
These examples use hypothetical figures, not current lender quotes. Actual results depend on exact amortization, payment timing, fees and mortgage program rules.
Example 1: simple break-even
A homeowner pays $4,500 in upfront closing costs and expects $150 less per month in principal and interest. Simple break-even is $4,500 ÷ $150 = 30 months. If the owner expects to sell in 18 months, this measure alone suggests the costs may not be recovered through payment savings.
But a complete comparison also looks at how much principal will remain at sale. A new longer term may build equity more slowly, making the apparent savings less valuable.
Example 2: a term reset changes the story
Imagine a $240,000 balance with 15 years remaining at 6.5%. Refinancing to 5.75% over 30 years can lower the scheduled payment significantly. However, paying the debt over 30 more years instead of 15 can increase the total interest paid from today, even with the lower rate.
Try these figures in the main comparison calculator and review both the monthly-payment difference and total remaining interest. Do not assume a lower payment means a cheaper loan.
Example 3: paying points
Suppose the loan amount is $240,000 and one point costs 1% of principal, or $2,400. The lender offers a lower interest rate if you pay that amount.
Calculate the monthly principal-and-interest difference between the rate with points and the rate without points. Divide $2,400 by the monthly savings to estimate the simple recovery period. If you refinance again before that period, the points may not pay for themselves.
Example 4: cash-out is borrowed money
A home is estimated at $400,000 and the mortgage balance is $240,000. At an illustrative 80% maximum LTV, a new loan could be up to $320,000. Before fees, that leaves a potential $80,000 above the old balance.
If closing costs are $5,000 and paid from proceeds, estimated cash received would be $75,000. The homeowner now owes much more than before, and qualification is not guaranteed.
Example 5: compare a shorter refinance term
A homeowner with 20 years remaining may compare a new 15-year mortgage against a new 30-year mortgage. The shorter term often has a higher payment but can reduce the number of years interest accrues.
Use a realistic monthly budget and include taxes and insurance separately. A plan that looks cheaper on paper is not useful if the required payment is unaffordable.
Example 6: fees paid in cash versus rolled into the loan
If a $5,000 charge is paid at closing, it is an immediate cash cost. If it is financed instead, the loan balance becomes $5,000 larger, and interest is charged on that additional principal over time.
The main comparison tool assumes entered closing costs are paid upfront. For financed fees, increase the new-loan principal accordingly and do not double-count those same fees as cash paid upfront.