Mortgage Refinance Calculator — Monthly Savings & Break-Even Point

Refinancing generally makes sense when: (1) the new rate is at least 0.75–1.0% below your current rate; (2) your break-even period (closing costs ÷ monthly savings) is shorter than how long you plan to stay in the home; (3) your credit score has improved enough to qualify for significantly better rates; (4) you want to switch from ARM to fixed for rate certainty. Running the break-even math with your specific numbers is more reliable than any rule of thumb.

Typical refinancing costs are 2–4% of the loan amount. On a $300,000 loan: $6,000–$12,000 in closing costs, including origination fees (0.5–1%), appraisal ($400–$700), title search and insurance ($500–$1,500), credit check fee ($25–$75), and prepaid items (insurance and tax escrow). Some states add recording fees or mortgage taxes. 'No-cost' refinances roll these fees into a slightly higher rate.

A standard refinance typically takes 30–60 days from application to closing. It involves a new loan application, credit check, property appraisal ($400–$700), title search, underwriting, and closing. Streamline refinances (for FHA or VA loans) can close faster (15–30 days) with less documentation. Cash-out refinances may take slightly longer due to more complex underwriting.

A cash-out refinance replaces your existing mortgage with a new, larger loan and gives you the difference in cash. If your home is worth $450,000 and you owe $250,000, you could refinance for $320,000 and receive $70,000 cash (minus closing costs). The cash is often used for home improvements, debt consolidation, or other large expenses. The risk: you're converting home equity into debt — if home values fall or you can't make payments, you risk foreclosure.

A 15-year refinance has higher monthly payments but dramatically lower total interest — on $300,000 at 6.0%, a 15-year pays approximately $152,000 in total interest vs $347,500 on a 30-year — a $195,500 difference. If you can afford the higher payment without straining your budget, the 15-year is usually the better long-term financial choice. The 30-year refinance makes sense if cash flow is tight or you'd invest the payment difference aggressively.

Conventional refinance typically requires a minimum 620 credit score, but 740+ gets the best rates. FHA streamline refinances allow lower scores with more flexible requirements for existing FHA borrowers. VA streamline refinances (IRRRL) are available to eligible veterans with no minimum credit score. With poor credit (below 620), waiting 6–12 months to improve your score before refinancing often produces better results than refinancing at a rate that barely improves on your current loan.