Extra Payments vs. Refinancing: Which Saves More?
Both strategies cut the interest you pay — but they work differently. Extra payments attack the balance; refinancing lowers the rate. Here is a concrete comparison so you can pick the right one for your situation.
The baseline: a $300,000 loan at 6.5% over 30 years
Fixed monthly payment: $1,896. Total interest over 30 years: $382,560. Everything below is measured against this.
Strategy A — Pay $200 extra every month
Adding $200 to each payment ($2,096/month) retires the loan in about 23 years instead of 30, and cuts total interest by roughly $104,000. No new loan, no fees, and you keep the rate you already have. The catch: you must keep paying the extra every month, and the benefit disappears the moment you stop.
Strategy B — Refinance to 5.5% over 30 years
A new 30-year loan at 5.5% drops the payment to about $1,704/month — a saving of $192/month versus the original. But refinancing is not free: closing costs commonly run $6,000–$9,000, so your break-even point is roughly 3 years. If you sell or move before then, you may not recoup the fees.
Side by side
| Extra $200/mo | Refinance to 5.5% | |
|---|---|---|
| Monthly cost | $2,096 | $1,704 |
| Payoff time | ~23 years | 30 years |
| Interest saved vs baseline | ~$104,000 | ~$69,000 |
| Up-front cost | $0 | $6,000–$9,000 |
| Best if you… | stay long & keep paying | want lower cash flow now |
Which should you pick?
- Cash-flow constrained? Refinancing lowers your required monthly outlay immediately — valuable if a tight budget is the real problem.
- Want maximum interest saved? Extra payments win on total cost, especially if you start early (see how amortization works).
- Best of both: Refinance to drop the rate, then keep paying your old higher amount as extra — you get a lower rate and a faster payoff.
Run your own numbers with the calculators linked here; the break-even math depends entirely on your balance, rate, and how long you will keep the loan.
Frequently asked questions
Should I refinance to a shorter term instead?
A 15-year refinance saves even more interest but raises the monthly payment sharply. It is the aggressive version of "extra payments" wrapped into a mandatory schedule — worth it only if the higher payment is comfortable.
What if rates have risen since I borrowed?
If current rates are above your existing rate, refinancing no longer helps on cost — extra payments become the clearly better lever.
Do extra payments reduce my required payment?
No. Your lender still expects the contractual amount; the extra simply retires principal faster, shortening the loan. You keep the flexibility to stop anytime.
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