# Cash Back Calculator

> Estimate gross and net cash back after an optional reward cap and annual fee.

Page: https://askcalculators.com/calculator/cash-back-calculator/
Definition: https://askcalculators.com/calculator/cash-back-calculator/definition.json
JSON Schema: https://askcalculators.com/calculator/cash-back-calculator/schema.json
Version: 1.0.0
Maintained by: AskCalculators (software project; not a credentialed reviewer)
Qualified review: pending. Automated checks do not establish professional approval.
Page status: Live
Review status: Pending

## Use
Open the calculator page and enter values. Query-string parameters can restore and bookmark a calculation.
Example: https://askcalculators.com/calculator/cash-back-calculator/?purchaseAmount=12000&cashBackRate=2

## Inputs
- purchaseAmount: Eligible spending; type=money; required; default=12000; min=0
- cashBackRate: Cash back rate; type=percent; required; default=2; min=0; max=100
- rewardCap: Reward cap; type=money; optional; min=0
- annualFee: Annual fee; type=money; optional; min=0

## Outputs
- netCashBack: Net cash back; format=currency; primary
- grossCashBack: Gross cash back; format=currency
- effectiveRate: Net reward rate; format=percent
- breakEvenSpend: Spend to cover annual fee; format=currency

## Formula
Net cash back = min(spending × reward rate, cap) − annual fee

## Rules
- Empty optional inputs are undefined, not zero.
- Hidden conditional inputs are ignored.
- Do not invent missing required inputs.