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Cash Back Calculator

Calculate credit card cash back rewards, earnings per purchase, and annual cash back totals.

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Calculating Credit Card Cash Back Rewards

Cash back rewards programs return a percentage of eligible credit card or debit card spending directly to cardholders as monetary cash credit, statement credit, or bank deposits.

How Cash Back Earnings Are Calculated

Gross cash back earnings $CB_{\text{gross}}$ for spending amount $S$ at reward rate $r$ (in percent) are calculated as:

$$CB_{\text{gross}} = S \times \left( \frac{r}{100} \right)$$

If the rewards program imposes a quarterly or annual spending cap $C_{\text{cap}}$, eligible spending $S_{\text{eligible}} = \min(S, C_{\text{cap}})$. Net annual earnings incorporate any recurring credit card annual fees $F_{\text{annual}}$:

$$CB_{\text{net}} = CB_{\text{gross, annual}} - F_{\text{annual}}$$

Frequently Asked Questions

What is a spending cap in a cash back card?

A spending cap is a limit placed on the total dollar amount of purchases eligible for elevated cash back rates during a specific period (e.g., 5% back up to $1,500 quarterly).

How do annual fees impact net cash back?

Annual fees reduce total reward value. To determine if a fee card is worthwhile, compare its net cash back ($CB_{\text{gross}} - \text{Fee}$) against a no-annual-fee card alternative.

What is effective cash back rate?

The effective cash back rate represents actual net earnings as a percentage of total spending after accounting for annual fees and reward tier caps.

Are cash back rewards subject to income tax?

In the United States, credit card cash back earned on personal purchases is generally treated as a purchase discount rather than taxable income by the IRS.