Refinance Calculator -- Break-Even & Savings

Refinance Calculator

This refinance calculator compares your current mortgage with a new refinance offer to determine monthly savings, break-even point, and total lifetime savings. Enter your current loan details and the new loan terms to see if refinancing makes financial sense.

How to Use This Calculator

General rule: If you plan to stay in the home longer than the break-even point and the lifetime savings are positive, refinancing typically makes financial sense.

Example Scenarios

When Refinancing Makes Sense

Refinancing typically makes financial sense when:

• Interest rates have dropped: Generally, a reduction of at least 0.5%–1% is worth it, but smaller drops can work if closing costs are low or the loan balance is high.
• Your credit score has improved: If your credit score increased significantly since your original mortgage, you may qualify for a better rate.
• You plan to stay in the home past the break-even point: If you might sell or move before break-even, you will lose money on the refinance.
• You want to switch loan types: Moving from an adjustable-rate mortgage (ARM) to a fixed-rate loan provides stability.
• You want to shorten the term: Refinancing from a 30-year to a 15-year loan saves massive amounts of interest and builds equity faster.
• You can eliminate PMI: If your home value has increased and you now have 20%+ equity, refinancing can remove PMI, adding to monthly savings.

When Refinancing Does Not Make Sense

• You plan to move soon: If you will sell before the break-even point, you lose money on closing costs.
• Closing costs are too high: If closing costs are 5% or more of the loan and savings are small, break-even may take 10+ years.
• You are near the end of your current loan: If you only have a few years left, refinancing into a new 30-year loan resets the clock and you pay interest for many more years.
• Your credit score has dropped: You may not qualify for a better rate, or the new rate might be worse than your current rate.
• You are stretching the term to lower payments: Refinancing from 10 years remaining into a new 30-year loan lowers monthly payments but dramatically increases total interest paid.

Understanding Break-Even Point

The break-even point is the most important metric for deciding whether to refinance. It tells you how long you must keep the new loan before the refinance pays for itself.

Break-Even Months = Closing Costs ÷ Monthly Savings

For example:

• Closing costs: $6,000
• Monthly savings: $250
• Break-even: 6,000 ÷ 250 = 24 months

If you stay in the home for at least 24 months, the refinance pays for itself and you come out ahead. If you sell or refinance again before 24 months, you lose money because the closing costs exceed your savings.

Note: Break-even analysis only makes sense when the new payment is lower than the current payment. If the new payment is higher (e.g., refinancing to a shorter term), you evaluate based on total interest savings over the life of the loan instead.

Typical Refinance Closing Costs

Refinance closing costs typically include:

Total: Typically 2%–5% of the loan amount. On a $300,000 loan, expect $6,000–$15,000 in closing costs. Always get a Loan Estimate from the lender within 3 business days of applying — it details all costs.

No-Closing-Cost Refinances: Some lenders offer refinances with no upfront closing costs, but they charge a higher interest rate to compensate. This can make sense if you do not plan to stay in the home long-term.

Refinancing to a Shorter Term

Many homeowners refinance from a 30-year mortgage to a 15-year mortgage. This increases the monthly payment but saves a massive amount in total interest and builds equity much faster.

Trade-off: The higher payment reduces monthly cash flow. Make sure you can comfortably afford the new payment and still have room for savings, emergencies, and other financial goals.

Frequently Asked Questions

How do I know if refinancing is worth it?

Refinancing is worth it if the break-even point is shorter than the time you plan to stay in the home. Calculate the break-even by dividing closing costs by monthly savings. If you plan to stay longer than the break-even period and lifetime savings are positive, refinancing makes sense.

What is a refinance break-even point?

The break-even point is the number of months it takes for your monthly payment savings to equal the total closing costs. Formula: Break-Even Months = Closing Costs ÷ Monthly Savings. If you sell or refinance again before reaching break-even, you lose money.

What are typical refinance closing costs?

Refinance closing costs typically range from 2% to 5% of the loan amount. On a $300,000 mortgage, expect $6,000 to $15,000. Costs include appraisal ($300–$500), title insurance ($700–$2,000), origination fees (0.5%–1% of loan), and other fees.

How much lower should the new interest rate be to refinance?

The traditional guideline is at least 0.5%–1% lower, but it depends on your situation. A smaller rate drop can be worth it if closing costs are low, the loan balance is large, or you plan to stay long-term. Use this calculator to evaluate your specific case.

Does refinancing reset the loan term?

Yes. If you refinance into a new 30-year loan, the 30-year clock starts over. If you have been paying your current loan for 5 years and refinance into a new 30-year loan, you will be paying for 35 years total. To avoid this, refinance into a term equal to your remaining years or choose a shorter term like 15 years.

What is a cash-out refinance?

A cash-out refinance replaces your mortgage with a larger loan and gives you the difference in cash. For example, if you owe $200,000 and your home is worth $350,000, you might refinance for $250,000 and receive $50,000 cash (minus closing costs). This increases your loan balance and payment.

Can I refinance if I have less than 20% equity?

Yes, but options are more limited. Conventional refinances usually require at least 20% equity to avoid PMI. FHA and VA loans may allow refinancing with less equity. If you currently pay PMI and refinancing gets you above 20% equity, you can eliminate PMI, adding to your monthly savings.

How long does refinancing take?

Refinancing typically takes 30 to 45 days from application to closing. The process includes application, home appraisal, underwriting, and final approval. Some lenders offer streamlined refinances for existing customers that can close faster.

What is the difference between rate-and-term refinance and cash-out refinance?

A rate-and-term refinance replaces your existing mortgage with a new loan of the same (or lower) balance to get a better rate or term. A cash-out refinance borrows more than you owe and gives you the difference in cash. Cash-out refinances typically have slightly higher rates and stricter requirements.

Does this calculator store my financial data?

No. All calculations run entirely in your browser using JavaScript. No loan details, inputs, or results are sent to any server. Nothing is stored or logged.

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Privacy & Limitations

• Client-side only. No data is sent to any server. No cookies, no tracking of loan details or results.
• Principal and interest only. This calculator compares P&I payments. Actual monthly costs include property taxes, insurance, and possibly PMI, which may change with a refinance.
• Fixed-rate loans only. This calculator assumes fixed interest rates. Adjustable-rate mortgages (ARMs) require different calculations.
• Estimated savings. Actual results depend on exact loan terms, lender fees, and closing cost details. This tool provides estimates for comparison and decision-making.
• Not financial advice. Refinancing decisions involve personal financial circumstances, tax implications, and long-term goals. Consider consulting a mortgage professional or financial advisor.

Refinance Calculator FAQ