Cash Back or Low Interest Calculator
Cash Back Offer
Low Interest Rate Offer
Other Information
Enter your information and click Calculate to see which offer is better
The Low Interest Rate Offer is Better!
With Cash Back Offer
Total Loan Amount$0
Sales Tax$0
Upfront Payment$0
Monthly Payment$0
Total of Loan Payments$0
Total Loan Interest$0
Total Cost$0
With Low Interest Rate Offer
Total Loan Amount$0
Sales Tax$0
Upfront Payment$0
Monthly Payment$0
Total of Loan Payments$0
Total Loan Interest$0
Total Cost$0
Our free Cash Back or Low Interest Calculator instantly compares the true total cost of both auto purchase incentives — a cash rebate offer versus a special low-interest financing offer — so you can see clearly which one saves you more money over the life of your loan.
How to Use This Calculator
1
Enter the cash back amount offered and the interest rate that comes with the cash back deal.
2
Enter the special low interest rate offered as an alternative to the cash back.
3
Enter the auto price, loan term, down payment, trade-in value, sales tax rate, and title and registration fees.
4
Check or uncheck Include All Fees in Loan depending on whether you plan to roll fees into the loan or pay them upfront.
5
Click Calculate to instantly see a side by side comparison showing which offer saves you the most money.
Cash Back vs Low Interest — Key Differences
| Feature | Cash Back Offer | Low Interest Offer |
|---|---|---|
| How It Saves You Money | Reduces your loan principal upfront | Reduces total interest paid over loan term |
| Best For | Short loan terms or cash buyers | Long loan terms — 48 to 84 months |
| Interest Rate | Standard market rate — usually higher | Reduced — often 0% to 2% |
| Credit Requirement | Available to most buyers | Usually requires excellent credit |
| Can Be Combined? | ❌ Usually mutually exclusive — you must pick one | |
Frequently Asked Questions
The cash back offer is generally better when the difference between the two interest rates is small, when your loan term is short, when you are a cash buyer with no financing, or when your credit score means you would receive a high interest rate on the standard loan anyway. In these cases the immediate principal reduction from the cash back saves more than the reduced interest would.
The low interest rate offer wins when you qualify for a significantly reduced rate — especially 0% to 1% APR — and your loan term is long (48 months or more). The longer the loan term the more interest you accumulate at the standard rate, making the low rate increasingly valuable. A 0% rate on a 72 month loan can save far more than even a generous cash back amount.
Rolling fees into the loan reduces your upfront out of pocket cost but increases your loan principal — which means you pay interest on those fees for the entire loan term. If you have the cash available paying fees upfront is almost always cheaper overall. Use our calculator with both options checked and unchecked to see the difference for your specific situation.
Total Cost is the complete amount you pay to own the vehicle — including your upfront payment (down payment plus any fees paid at signing) plus all monthly loan payments over the entire loan term. This is the most important number to compare between the two offers because it tells you the true cost of each option regardless of how payments are structured.
Want to Learn More About Cash Back vs Low Interest?
Read our complete guide — how each offer works, when to choose which, and smart tips before you buy.