Refinancing

Refinancing Mistakes That Cost Borrowers Thousands

By Jack Bodenstein | Coventry Enterprises of America | June 28, 2026

Coventry Enterprises of America Mortgages article by Jack Bodenstein

Refinancing a mortgage is genuinely beneficial in some situations and genuinely harmful in others. The difference is almost entirely a matter of arithmetic and how long you plan to stay in the loan. Coventry Enterprises of America documents the most common refinancing mistakes here, so you can do the math correctly before you sign.

Mistake 1: Focusing on the Monthly Payment, Not the Total Cost

The most common refinancing error is evaluating the deal based on the new monthly payment versus the old one. A lower monthly payment feels like a win, but if it comes from stretching the loan back to 30 years rather than from a better interest rate, you may be paying more in total over the life of the loan even if you pay less each month.

Before refinancing, calculate the total interest you will pay under each scenario: (a) keeping your current loan to payoff, and (b) refinancing to the new terms and holding to payoff. Compare those totals, not the monthly payments. The difference will sometimes surprise you.

Mistake 2: Skipping the Break-Even Calculation

Every refinance has closing costs. Those costs are sunk on the day you close: you paid them whether the refinance was the right move or not. The break-even calculation tells you how many months of monthly savings it takes to recover those costs. If you sell or refinance again before reaching break-even, you lost money on the transaction.

Mistake 3: Using Cash-Out to Fund Consumption

A cash-out refinance that funds a kitchen renovation or a home addition may add value to the property. A cash-out refinance that pays for a vacation, a car, or other consumer purchases converts short-term spending into long-term mortgage debt. You will pay interest on that cash for the remaining term of your mortgage. At 7 percent on a 30-year loan, the true cost of $20,000 in cash-out can approach $50,000 in total interest over the life of the loan.

Mistake 4: Not Shopping Multiple Lenders

Refinancing with your current lender is convenient but often not the best financial decision. Your current lender has no competitive pressure to offer you the best rate; they already have your business and they know refinancing with a new lender is slightly inconvenient for you. That asymmetry typically results in current lenders offering slightly worse terms than competitors. Always get at least two quotes before refinancing.

Mistake 5: Refinancing FHA into FHA Without Checking Conventional Options

If you currently have an FHA loan and have built 20 percent or more equity in your home, refinancing into a conventional loan could eliminate your mortgage insurance premium entirely. The savings from dropping MIP may be more significant than any rate reduction. Compare FHA-to-FHA versus FHA-to-conventional explicitly before assuming the first available offer is optimal.

Refinancing Guide   Mortgage Education

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