Cash Back Calculator — Credit Card Rewards Estimator
Enter your monthly spending, the card's cash back rate, annual fee and any bonus category rate to see exactly how much cash back you earn each year, your effective return, and how many months it takes for rewards to cover the annual fee.
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Total cash back earned minus annual card fee
- 1
Annual spending
2,000 × 12 = 24,000 - 2
Gross cash back
24,000 × 1.5% (+ bonus) = 360Base-rate earnings on all spending, plus any bonus-category uplift. - 3
Net annual cash back
360 − 0 = 360
How does this calculator work?
Annual cash back = (regular spending × base rate%) + (bonus-category spending × bonus rate%) minus the annual fee. Divide net cash back by total spending for the effective return rate. A card is worth its fee only when gross rewards exceed what a no-fee card at the same base rate would earn.
Formula
How this is calculated
Cash back credit cards return a percentage of your spending as cash. The base rate applies to all purchases; many cards layer on bonus categories — dining, groceries, fuel — that earn a higher rate. To compare cards meaningfully, you must account for the annual fee: a card charging $95 per year needs to earn at least $95 in rewards to break even with a no-fee alternative.
This calculator takes your average monthly spending (divided into regular and bonus-category amounts), applies the respective rates, and sums the annual gross cash back. Subtracting the annual fee gives net cash back. The effective return rate (net ÷ total annual spend) is the single figure that lets you compare any two cards on a like-for-like basis regardless of their fee structures.
The cumulative chart shows how your net rewards build over 12 months, with the annual fee deducted at the start of the year. If your card credits rewards monthly, you break even on the fee as soon as the curve crosses zero. Limitations: this model assumes steady spending every month and does not account for sign-up bonuses, redemption restrictions, spending caps on bonus categories, or foreign-transaction fees.
Frequently asked questions
A premium card with a $500 fee is worth it only if your annual rewards exceed $500 more than a free card would earn. Use the effective rate — net cash back ÷ total spending — to compare. High spenders in bonus categories often find premium cards pay off; low spenders rarely do.
Many cards offer 2–5% on specific categories (dining, groceries, travel) and 1–1.5% on everything else. In this calculator, enter your average monthly spend in the bonus category separately — the difference between the bonus rate and the base rate is multiplied by that spend to compute the extra reward.
The break-even month is when cumulative cash back equals the annual fee you paid at the start of the year. After that month every dollar earned is a true benefit. If the card never reaches break-even in 12 months, you are effectively paying more in fees than you earn in rewards.
Also known as
TG we-Calculate Editorial Team. (2026). Cash Back Calculator — Credit Card Rewards Estimator [Online calculator]. TG we-Calculate. https://we-calculate.com/calculator/cash-back-calculator
TG we-Calculate Editorial Team. "Cash Back Calculator — Credit Card Rewards Estimator." TG we-Calculate. 2026. https://we-calculate.com/calculator/cash-back-calculator.
TG we-Calculate Editorial Team, "Cash Back Calculator — Credit Card Rewards Estimator," TG we-Calculate, 2026. [Online]. Available: https://we-calculate.com/calculator/cash-back-calculator
@misc{wecalculate_cash_back_calculator, title = {Cash Back Calculator — Credit Card Rewards Estimator}, author = {{TG we-Calculate Editorial Team}}, howpublished = {\url{https://we-calculate.com/calculator/cash-back-calculator}}, year = {2026}, note = {TG we-Calculate} }
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