Is the cash price cheaper than paying with a rewards card?
Only when the gap beats your card. Stations that post two prices usually take 5 to 10 cents a gallon off for cash. On a $4.00 gallon a 2% card gives back 8 cents, a 3% card 12, a 5% card 20. A 3% card or better beats the usual cash discount.
The test, in three steps
1. Find the gapThe card price minus the cash price. Where a station posts both, it is usually 5 to 10 cents a gallon.
2. Find what your card gives backIts percent times the card price. On $4.00, 2% is 8 cents, 3% is 12, 5% is 20.
3. Take the bigger oneGap bigger, pay cash. Card bigger, pay with the card.
The shortcut: divide the gap by the card price. 10 cents on $4.00 is 2.5%. A card that pays more than that on gas beats cash.
Who wins on a $4.00 card price
| Your card | Cash is 5¢ less | Cash is 10¢ less |
|---|---|---|
| No rewards card | Cash by 5¢ | Cash by 10¢ |
| 2% card, 8¢ back | Card by 3¢ | Cash by 2¢ |
| 3% card, 12¢ back | Card by 7¢ | Card by 2¢ |
| 4% card, 16¢ back | Card by 11¢ | Card by 6¢ |
| 5% card, 20¢ back | Card by 15¢ | Card by 10¢ |
Cash discount range: NerdWallet, October 2026. Card back is its percent of the card price. A wider gap moves the line: at 20 cents on $4.00, a 5% card only ties.
What paying cash gives up
- The card's percentage. That is the whole test above.
- Upside. Upside pays only on a credit or debit card purchase. A typical offer is 15 cents a gallon, more than the usual cash discount.
- Not the station program. BP earnify, for one, takes its cents off however you pay. Enter your number before you pump.
- Debit depends on the station. Some give a debit card the cash price, some charge it the card price. The sign or the pump says which.
Price a cash fill on Fill up
- Type the cash price. Open the station and put the cash price in its Sign price box.
- Take the card off. Set the card to No rewards card and the cashback app to Pay normally.
- Compare. Fill up ranks the cash fill against your other stations, drive included.
Where a station posts one price, there is no cash price to chase and the card is all gain.
Questions people ask
Is the cash price cheaper than paying with a rewards card?
Only when the gap is bigger than what your card gives back. The usual cash discount is 5 to 10 cents a gallon. At $4.00, a 2% card returns 8 cents, a 3% card 12 and a 5% card 20. A 2% card beats a 5 cent cash discount by 3 cents and loses to a 10 cent one by 2. A 3% card or better beats both.
How do I work out the break-even between cash and card?
Divide the gap by the card price. A 10 cent gap on a $4.00 gallon is 2.5%, so a card that pays more than 2.5% on gas beats cash there and a card that pays less does not. A 5 cent gap is 1.25%, which a 2% card clears.
Does a debit card get the cash price at a gas station?
It depends on the station. Some treat debit as cash and some as a card, so read the sign or the pump before you pay.
What do I lose by paying cash for gas?
The card's percentage, and Upside, which pays only on a credit or debit card purchase. A typical Upside offer is 15 cents a gallon, more than the usual cash discount. Station programs are different: BP earnify, for one, takes its cents off however you pay.
Every default and its source: Methods.