Extra Payment Strategies and Their Impact
*Equivalent to one extra monthly payment applied annually — $25,000 at 8%, 60 months
| Strategy | $25,000 Loan at 8%, 60mo | Months Saved | Interest Saved |
|---|---|---|---|
| Normal payments only | $507/month for 60 months | — | — |
| $50 extra/month | $557/month | 4.5 months early | $267 |
| $100 extra/month | $607/month | 8 months early | $488 |
| One extra payment/year | $2,084 extra/year* | 5 months early | $298 |
| Double one payment/year | $507 extra once | 5 months early | $289 |
| $2,500 lump sum in month 12 | One-time | 5 months early | $318 |
Why Early Car Loan Payoff Is Particularly Valuable
Auto loan interest front-loads like any amortizing loan. In Month 1 of a $25,000 loan at 8%, your payment of $507 includes $167 in interest and $340 in principal. Every extra dollar applied to principal eliminates future interest on that balance. The earlier in the loan, the more you save.
Always tell your lender (or note in online payment portal) that extra payment should apply to principal only, not prepay future payments. If applied as future payment credit, it doesn’t reduce your balance or your ongoing interest charges.
Refinancing vs. Extra Payments: Which Is Better?
If you can refinance to a lower rate, do it — especially early in the loan when more interest remains. If you can’t refinance (damaged credit, underwater on the loan), extra payments are the next best lever. Refinancing from 10% to 6.5% on a $20,000 remaining balance saves approximately $1,800 in interest.
See Your Early Payoff Savings
Enter your current loan balance and extra payment amount — see exactly how many months you cut off and how much interest you save.