Auto Loan Payoff Calculator
See your car loan payoff date, monthly payment, and total interest. Add an optional extra monthly payment to pay off your auto loan early and see how much interest you save.
Your Auto Loan
Enter your car loan balance, APR, term, and an optional extra monthly payment.
Assumes monthly compounding and one payment per month.
Graph
Your balance dropping to zero, month by month
Month-by-month payoff schedule
Desktop shows a table. Mobile shows stacked rows.
| Month | Starting balance | Interest | Payment | Ending balance |
|---|
Scroll to see all months.
Results
Your payoff summary updates after calculation.
Paying extra on more than your car? Try the Loan Extra Payment Calculator.
Dr. James Frederick Smiling, PhD, Mathematics Education
These calculators were built by a university mathematics professor who teaches statistics and financial literacy at the college level. He holds a PhD in Mathematics Education and has spent his career turning hard math into something everyday people can actually use.
As a husband and father of six, he has personally navigated student loans, credit card debt, and the rising cost of running a household, so these tools are built to respect both the math and the real-life pressure behind it. No hype, no pressure, just the clear numbers most debt advice leaves out.
- ✓ PhD in Mathematics Education
- ✓ Teaches college statistics & financial literacy
- ✓ Standard amortization math, the method lenders use
- ✓ 100% free, we never store your numbers
How this calculator works: interest compounds monthly on your balance; your APR and payment stay fixed unless you change them; no new charges are added; results are estimates for planning, not financial advice.
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"I wanted to see how fast I could pay off one of my credit cards. In about a minute it showed me exactly how many payments I had left and the date it would be paid off. It motivated me to put even more toward the card. So simple a third-grader could use it."
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"After searching for sites to help me understand and control my debt, this turned out to be the best one out there. It's simple to use and answers a lot of questions for free, and if you want a deeper plan, the guides are priced fairly. I'd gladly recommend it to anyone carrying real debt."
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Your Auto Loan Results, How Much Sooner You Pay Off the Car
Even a small extra payment can move your car loan payoff date sooner than most people expect.
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🧾 Extra payments lower your car loan balance
Based on your inputs, any extra amount goes toward your auto loan balance. A lower balance means less interest can build up over the life of the loan. -
📉 Interest savings add up over time
Your results show how paying extra earlier can reduce the total interest you pay on the car. Paying a little every month matters more than the size of any one payment. -
⏱️ Why your payoff date moves
Example: On a $30,000 auto loan at 9% APR over 5 years, the payment is about $623 a month. Adding an extra $100 a month pays the car off about 10 months early and saves roughly $1,289 in interest. Your own payoff time and totals are shown above.
If you want a clear next step based on these results…
Used your calculator? Get the action plan.
The Loan Extra Payment Plan
Your calculator showed what extra payments do. This plan shows you exactly how much to add, when to add it, and how to automate it so you never miss the savings.
- ✓ See exactly how many years one extra payment removes from your loan
- ✓ Find the minimum extra payment that creates maximum impact
- ✓ Learn how to apply extra payments correctly so they actually reduce principal
- ✓ Printable one-page action plan, your entire strategy on one sheet
Get the Plan $7 →
For educational planning only, not financial advice.
How Extra Payments Change Your Auto Loan Payoff Timeline
with $100/mo extra
Take a $30,000 auto loan at 9% APR over 5 years. The monthly payment is about $623. Adding an extra $100 a month pays the car off about 10 months early and saves roughly $1,289 in interest. The reason is simple: every dollar you take off the balance early stops building interest for the rest of the loan.
Extra Payments Usually Go Straight to Your Balance
On most car loans, an extra payment goes straight to your loan balance, the amount your interest is figured on. A smaller balance means less interest is added each month, so the payoff speeds up the longer you keep it up. It helps to check with your lender: some ask you to note "apply to principal" so the extra money is not just held as your next scheduled payment.
On a standard car loan, an extra payment lowers your balance. A smaller balance means less interest is added going forward, which can shorten how long you make payments.
Why Timing Matters
$30k car loan at 9% APR
On a $30,000 auto loan at 9% APR, the first month adds about $225 in interest before any of your payment touches the balance. Early payments are heavy on interest, so an extra payment made early in the loan does more work than the same dollars paid near the end, you are cutting the balance that would build the most interest.
Paying extra earlier usually has a bigger effect because it lowers the balance sooner. A smaller balance earlier in the schedule often means less total interest over the life of the car loan.
Details to Check With Your Lender
Before you send extra payments on a car loan, check three things: your loan has no early-payoff penalty, extra money is applied to the balance (not held as a future payment), and the payment posts in the same billing cycle. Some auto loans do charge a fee for paying off early, so a quick call to your lender clears up the guesswork.
Some car loans have rules that affect extra payments, such as early-payoff fees, how the lender splits your payment, or a need to note "apply to balance." Confirm how your lender handles extra payments before you count on a plan.
Go deeper: How extra payments cut months off your car loan, Does paying off a loan early hurt your credit?, Extra payments on a personal loan
Before you leave
Most people making extra payments are applying them wrong, and losing the savings.
The 10-minute Loan Extra Payment Plan shows you exactly how to apply extra payments so they actually cut years off your loan.
FAQ
How much does an extra $100 a month save on a $30,000 auto loan at 9% APR?
On a $30,000 car loan at 9% APR with a 5-year (60-month) term, the monthly payment is about $623. Adding $100 a month, paying about $723 total, pays the car off in about 50 months instead of 60. That is 10 months sooner, and it saves roughly $1,289 in interest. The savings build up because each extra dollar you take off the balance early stops adding interest for the rest of the loan. Run your own balance, rate, and term in the calculator above to see your exact numbers.
Does my extra car payment go to the balance or to interest first?
On a car loan, interest is figured on your current balance before each payment is applied. So your regular payment covers that month's interest first, and the rest lowers the balance. On a $30,000 loan at 9% APR, the first month's interest is about $225. When you send an extra amount and it is applied to your balance, it skips the interest step and goes straight to lowering what you owe, which is why even a small extra payment moves your payoff date sooner.
Do I need to tell my lender to apply extra payments to my balance?
Often, yes. Many lenders apply extra money to your next scheduled payment instead of your balance unless you tell them otherwise. To make sure the extra amount lowers your balance: note "apply to principal" or "apply to balance" when you pay, pick that option in your lender's online portal, or call and ask. Then check your next statement, the balance should drop by the full extra amount, not just the normal amount. If it was applied to next month's payment instead, ask the lender to fix it.
Should I make monthly extra payments or wait and pay one lump sum?
Paying a little extra every month usually beats saving up and paying one lump sum later, because each early payment lowers the balance that interest is figured on for more months. On a $30,000 car loan at 9% APR, sending $100 extra each month saves more interest than holding that money and paying $1,200 once at the end of the year. A lump sum still helps a lot, a tax refund or bonus put on the car is a good move, it just is not quite as strong as steady monthly extra payments.
Is there a penalty for paying off my car loan early?
Some auto loans charge an early-payoff fee and some do not, so it is worth checking before you send extra. Look at your loan agreement for an "early payoff" or "prepayment" section, or call your lender and ask directly. If there is a fee, compare it to the interest you would save by paying early, the calculator above shows your interest savings, so you can see whether paying ahead still comes out in your favor. Most standard car loans let you pay early with no penalty.
How many months can I cut off my car loan by adding $200 a month?
On a $30,000 auto loan at 9% APR with a 5-year term (about $623 a month), adding $200 a month pays the car off in about 43 months instead of 60. That is 17 months sooner, and it saves roughly $2,186 in interest. The bigger your balance and the higher your rate, the more each extra dollar does. Use the calculator above with your own balance, rate, and term to see your exact month and interest savings.
How much interest will I pay on a 72-month car loan?
On a $30,000 auto loan at 9% APR, a 72-month term has a payment of about $541 and costs about $8,935 in total interest. The same loan over 60 months runs about $623 a month but only about $7,365 in interest, roughly $1,570 less overall. A 72-month term lowers the monthly payment but spreads interest over more years, so you pay more in the end and stay upside down (owing more than the car is worth) for longer. Compare total interest at different loan lengths using the calculator above.
Should I pay off my car loan or my credit card first?
In most cases, pay off the credit card first. Credit cards usually charge 20% APR or more, while car loans are often in the single digits, so every extra dollar aimed at the higher-rate card saves you more interest. Keep making the minimum on your car loan so it stays current, then put every extra dollar on the card until it is gone, then roll that freed-up money onto the car. The main exceptions are if your car loan rate is unusually high or you are trying to build equity because you are close to being upside down. This is general information, not financial advice, compare your own rates first.
Does paying off a car loan early hurt your credit score?
Paying off a car loan early can cause a small, temporary dip in your credit score, but it does not hurt your finances. Scores sometimes dip a few points because a closed installment account and a slightly less varied credit mix can lower your averages, and that usually recovers within a few months. In exchange you stop paying interest and free up your monthly payment, which matters far more. If you are about to apply for a mortgage or another loan, some people wait so their credit picture stays steady, but for most people paying the car off early is a clear win. This is general information, not credit advice.
