Mortgage Refinance 101: When Does It Make Sense?
Refinancing your mortgage sounds simple: get a lower rate, save money. But the math is more nuanced than that. Depending on your goals, timeline, and current loan, refinancing may be a home run — or a break-even that barely justifies the closing costs. Here's how to think through it clearly.
What Is Refinancing?
When you refinance, you replace your existing mortgage with a new one — typically with different terms. You're essentially paying off your old loan and taking out a new one. This means new closing costs (usually 2–4% of the loan amount), a new loan term, and ideally a lower interest rate or payment.
The 3 Main Reasons People Refinance
- →Lower your rate (and payment): This is the most common reason. If rates have dropped since you bought, or your credit has improved, you may qualify for a significantly better rate.
- →Shorten your loan term: Moving from a 30-year to a 15-year mortgage costs more per month but eliminates years of interest and builds equity faster.
- →Cash-out equity: You borrow more than you owe and take the difference as cash. Common uses: home improvements, debt consolidation, investment.
The Break-Even Calculation
Before refinancing, calculate your break-even point: how many months until your monthly savings cover the closing costs.
Break-Even = Closing Costs ÷ Monthly Savings
If you plan to stay in the home longer than 24 months, refinancing makes financial sense. If you're moving in 18 months, you'd lose money.
Rate Reduction Rules of Thumb
- →The '1% rule' says refinancing is worth it if you can drop your rate by at least 1%. This is a rough guideline — the real test is the break-even calculation above.
- →On a large loan balance (e.g., $600K), even 0.5% savings can justify the costs quickly.
- →On a small balance (e.g., $80K), even 1.5% savings may take 4+ years to break even — not worth it if you're planning to sell.
Types of Refinance
| Type | How It Works | Best For |
|---|---|---|
| Rate-and-Term Refi | Change rate, term, or both. No cash out. | Lowering rate or shortening term |
| Cash-Out Refi | Borrow more than you owe, take the difference. | Home improvements, debt payoff, investment |
| Streamline Refi (FHA/VA) | Simplified process, less documentation. | FHA/VA loan holders with minimal equity |
| Cash-In Refi | Pay down principal to get better rate or remove PMI. | High LTV borrowers, PMI elimination |
When NOT to Refinance
- ⚠You're close to paying off your loan — refinancing restarts the amortization clock
- ⚠Closing costs are too high relative to your loan balance
- ⚠You're planning to move in less than 2 years
- ⚠Your credit score has dropped significantly since your original mortgage
- ⚠You're converting from a fixed to an ARM without understanding the risk
How to Start
- 1Pull your current loan details (balance, rate, remaining term)
- 2Check your credit score (aim for 720+ for best rates)
- 3Get your home's current estimated value
- 4Talk to a Tiger Loans loan officer — we'll run the numbers for your specific situation
- 5If the break-even makes sense, we'll lock your rate and handle the paperwork
Get a Free Refinance Analysis
Tell us your current loan details and we'll calculate your potential savings. No cost, no obligation.
Calculate My Savings*Calculations are illustrative. Actual savings vary based on loan amount, rate, and closing costs. Contact Tiger Loans, Inc. NMLS #1169300 for a personalized quote.