About Mortgage Refinance Analyzer

Analyze mortgage refinancing scenarios and break-even periods. Part of the DevTools Surf developer suite. Browse more tools in the Real Estate & Home collection.

Use Cases

• Calculate monthly payment savings and break-even period for a rate-reduction refinance.
• Compare the 15-year vs. 30-year refinance option to evaluate the monthly cost vs. total interest trade-off.
• Model a cash-out refinance to fund a renovation and compare against a HELOC or personal loan.
• Analyze whether to pay discount points to lower the rate based on expected remaining time in the home.

Tips

• Calculate the break-even period before committing to a refinance — if you plan to sell before the break-even point, the upfront closing costs exceed the monthly savings.
• Factor in cash-out refinancing's opportunity cost — the extra cash has a real cost equal to the interest rate on the incremental principal, not zero.
• Compare APR rather than rate across multiple offers — APR amortizes closing costs into a single comparable rate.

Fun Facts

• Mortgage refinancing activity in the US reached an all-time high in 2020-2021 as rates hit historic lows below 3%. The Mortgage Bankers Association recorded $2.8 trillion in refinance originations in 2020 alone.
• The 30-year fixed-rate mortgage is nearly unique to the US — most other countries offer only adjustable-rate or 5-10-year fixed mortgages. The 30-year fixed became standard after the creation of Fannie Mae in 1938.
• The average break-even period for a mortgage refinance in the US is 27 months, according to Freddie Mac's 2022 analysis — meaning over half of homeowners who refinance recoup closing costs within 2.25 years.

FAQ

How is the break-even period calculated?

Break-even = total closing costs / monthly payment reduction. If closing costs are $5,000 and the new payment is $200 lower, break-even is 25 months (2 years 1 month).

Should I refinance to a 15-year mortgage?

15-year rates are typically 0.5-0.75% lower than 30-year rates. Monthly payments are higher but total interest paid is dramatically lower. Use the calculator to compare total interest cost, not just rate.

What closing costs should I expect?

Typically 2-5% of the loan amount. Main costs: origination fee (0.5-1%), appraisal ($300-600), title insurance ($500-1500), and recording fees ($100-300). No-closing-cost refinances roll these into the rate.