Everyday tool · ≈ 2 min · Auto loans
Auto Loan Early Payoff Calculator
See how extra payments shorten your car loan and what they save in interest.
Showing example defaults — change any input to use your own
Early payoff
Estimated interest saved
$533
$75/month extra finishes the loan in 3 yr 6 mo — 9 mo sooner — and avoids $533 of interest at these terms.
- Payoff, current schedule
- 4 yr 3 mo
- Payoff, with extras
- 3 yr 6 mo
- Interest, current schedule
- $3,017
- Interest, with extras
- $2,484
View data table
| Total interest | |
|---|---|
| Current plan | $3K |
| With extras | $2.5K |
What this may mean for you
One check before you start: confirm your loan uses simple interest (most do) rather than precomputed interest, and that there's no prepayment penalty — your contract or servicer will say. Then extras are pure upside: prepaying earns your 7.5% APR risk-free and shortens the years the car is worth less than you owe.
Results are estimates for educational purposes and may not reflect your complete financial or tax situation.
Understanding this calculator
Car loans are shorter and smaller than mortgages, so the payoff math moves fast: even $50 extra per month visibly shortens a typical loan. Prepaying also attacks the negative-equity years, when the balance exceeds what the car would sell for.
One check first: a small minority of auto loans use precomputed interest, where early payoff saves little. The overwhelming majority are simple interest, where every early dollar helps — your contract will say which.
Assumptions and methodology
- Simulates the balance monthly at your APR and payment; extras apply to principal.
- Interest saved compares lifetime interest between the current and accelerated schedules.
- Assumes simple-interest treatment and no prepayment penalty (rare, but check your contract).
Official sources
Last reviewed August 30, 2026. Year-specific figures show their tax or data year in the tool; data is reviewed when the IRS, SSA, and CMS publish annual updates.
Common questions
Pay off the car or invest the difference?
Prepaying earns your loan's APR risk-free; investing has higher expected but uncertain returns. Many people prioritize the car when the APR is high or the balance exceeds the car's value, and invest otherwise.
Next step
See how this fits your whole retirement
One number is a start. The plan builder puts income, spending, savings, and taxes together year by year — free, no account, and every answer can be changed later.
Keep going
- Auto LoanEstimate your monthly car payment and the true total cost of the loan, including tax and fees.Calculator
- Auto AffordabilityTurn a monthly payment you're comfortable with into the vehicle price it actually supports.Calculator
- Snowball vs. AvalancheBuild a payoff plan across all your debts and compare the avalanche and snowball methods.Calculator
Want a professional's take? Downshift can introduce you to a financial advisor, CPA, or retirement planner who can talk through what these numbers mean for you — free to you, no obligation.
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