Cash Back or Low Interest Calculator

Compare a cash rebate at the standard rate against a low-APR financing offer to see which is cheaper.

How this calculator arrives at its answer

Car dealers often offer a choice: take a cash rebate or a low financing rate. This calculator compares the total cost of each so you can pick the cheaper option.

The best choice depends on the rebate size, the rate gap and the loan term.

A worked example

Take the starting scenario, a vehicle price of 30,000. That gives a you save of $1,794.73. Underneath, Rebate + standard APR comes out at $33,266.01 and Low APR, no rebate at $31,471.29. Change any field and every figure updates as you type.

Using the calculator

  1. Enter the vehicle price.
  2. Enter the rebate and standard rate.
  3. Enter the low APR and term to compare.

The formula

cost A = payment on (price − rebate) at standard rate cost B = payment on price at low APR

Questions people ask about this

Rebate or low APR — which is better?
It depends. A big rebate often wins on shorter loans; a very low APR can win on longer ones. This tool compares them directly.
Does the loan term matter?
Yes — longer terms magnify the value of a low rate, while the rebate’s benefit is fixed upfront.
Can I get both?
Usually not — dealers make you choose. That’s why comparing matters. This is an estimate, not advice.