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Cash Back vs. Low Interest Auto Loan Calculator — Which Dealer

The ultimate dealership survival tool. Instantly compare a cash rebate (at your bank rate) vs. Free, instant, and accurate.

✓ Formula verified: January 2026

Cash Back vs. Low Rate

Results below

Enter Values

$
$
$
%
%
Option A (Cash Back) Wins
Saves $990.31 overall

Total Savings with Winning Option

$990.31

Option A Monthly Payment (Cash Back + 6.99% Rate)

$1,208.74

Option B Monthly Payment (0.00% Promotional Rate)

$1,250.00

Option A — Total Interest Paid

$2,009.69

Option B — Total Interest Paid

$0.00

Option A — Total Out-of-Pocket

$34,009.69

Option B — Total Out-of-Pocket

$35,000.00

What if your vehicle price changes? $31500 → Saves $1,250.82 overall · $35000 → Saves $990.31 overall · $38500 → Saves $729.79 overall

Scenario Comparison

Conservative (5%)
$16,470.09
$6,470.09 interest
Your scenario (7%)
$20,096.61
$10,096.61 interest
Aggressive (10%)
$27,070.41
$17,070.41 interest
High-risk (14%)
$40,224.71
$30,224.71 interest
Best return
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Cash Back vs. Low Rate — Full Comparison
Winner

Option A (Cash Back) Wins

Saves $990.31 overall

vs. the other option

MetricOption A (Cash Back)WINNEROption B (Low Rate)
Monthly Payment$1,208.74$1,250.00
Total Interest$2,009.69$0.00
Total Out-of-Pocket$34,009.69$35,000.00

Total Cost Breakdown — Principal vs. Interest

$27,000$30,000$34,010$35,000Option ACash BackOption BLow Rate
Principal
Interest
Winner

Why 0% is not always the winner

The cash rebate lowers your loan principal immediately — before any interest accrues. A large rebate at a moderate rate can cost less than a small rebate at 0%, especially on shorter loan terms. The longer the term, the more the low rate has to work with — which is when promotional financing tends to win.

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