Merchants • Gas

Best Credit Cards for Costco Gas

Among the cards CardTruth has reviewed, the BMO CashBack World Elite Mastercard earns the most at Costco Gas: 3% back, worth 3% of what you spend. Compare the top two →

Cards accepted

In store
Mastercard
Online
None

Mastercard is the only credit card accepted at the pump.

How purchases code (MCC)

  • 5542Automated fuel dispensersCommonly reported

    Costco gas bars are coded separately from the warehouse, as fuel. The CIBC Costco Mastercard terms name "Costco gas stations" for its 3% rate.

A purchase's code is set by the merchant's payment processor and card network, not by your card, and it can differ by location, network and over time (American Express classifies merchants itself). Your statement shows how a purchase actually coded. Last verified October 2026.

Personal cards accepted in store

  1. BMO CashBack World Elite MastercardCategory match · Spending cap applies
    3%3% back
  2. BMO VIPorter World Elite MastercardCategory match · Spending cap applies
    ≈3%2x points
  3. CIBC Costco MastercardNamed in the card's terms · Spending cap applies
    3%3% back
  4. RBC Cash Back Preferred World Elite MastercardCategory match
    3%3% back
  5. WestJet RBC World Elite MastercardCategory match
    ≈2%2x points
  6. BMO VIPorter MastercardCategory match · Spending cap applies
    ≈1.5%1x points
  7. BMO Blue Rewards World Elite MastercardCategory match · Spending cap applies
    ≈1.34%2x points
  8. PC Insiders World Elite MastercardCategory match
    1%1% back
  9. PC MastercardCategory match
    1%1% back
  10. PC World Elite MastercardCategory match
    1%1% back
Show all 20 personal cardsShow fewer
  1. PC World MastercardCategory match
    1%1% back
  2. RBC Cash Back MastercardCategory match
    1%1% back
  3. Scotia Momentum Mastercard Credit CardCategory match
    1%1% back
  4. WestJet RBC MastercardBase rate
    ≈1%1x points
  5. CIBC Adapta MastercardBase rate
    ≈0.83%1x points
  6. CIBC Adapta Mastercard for StudentsBase rate
    ≈0.83%1x points
  7. BMO Ascend World Elite MastercardBase rate
    ≈0.67%1x points
  8. BMO Blue Rewards MastercardCategory match · Spending cap applies
    ≈0.67%1x points
  9. BMO CashBack MastercardBase rate
    0.5%0.5% back
  10. Student BMO CashBack MastercardBase rate
    0.5%0.5% back

Visa and American Express cards aren't accepted at Costco Gas, so they're not listed.

Values are cash-back equivalents: percentage rates as stated, and points at CardTruth's estimated point value (each teardown's Points & Redemption section explains it). Rates come from each card's terms; welcome offers aren't included. Confirm current rates with the issuer before you rely on them.