Finance
Cash Back vs Low APR Calculator
Compare a purchase rebate with promotional financing using the same price, term, down payment, and alternative loan rate. The calculator uses compare total paid under rebate loan with total paid under promotional APR. It returns more than one result so you can check the main answer against a useful secondary measure. A rebate can win when the financing rate difference is small or the loan term is short. Taxes, fees, trade-ins, eligibility, and dealer pricing can change the offer comparison.
Educational scenario only. Confirm rates, fees, taxes, contract terms, and eligibility with the relevant institution or adviser.
Calculate and compare
Use the number box for precision or the slider for fast scenario testing.
Scenario results
Rebate-offer total paid
$44,914.94
Modeled payment: $665.25.
Promo-APR total paid
$43,814.58
Modeled payment: $646.91.
Lower modeled cost
Take promotional APR scenario
Difference: $1,100.36.
How the calculation works
Use consistent units and retain full precision until the final display step.
Worked example
Reproduce the displayed scenario, then change one assumption at a time.
Assumptions behind the result
- • Inputs use the units shown beside each control.
- • The displayed formula is applied without hidden market or demographic data.
- • Rounding occurs only for display; calculations keep full numeric precision.
- • A rebate can win when the financing rate difference is small or the loan term is short.
- • Taxes, fees, trade-ins, eligibility, and dealer pricing can change the offer comparison.
Mistakes that change the answer
- • Mixing percentages with decimals or mixing incompatible units.
- • Relying on a rounded intermediate value instead of the full result.
- • Changing several assumptions at once instead of testing purchase price separately.