Not a trustworthy method, since the marchants may change MCC all the time.
Note that Chatgpt may make mistakes as well 
Fico8: EX~EQ~TU~840 (12 month goal~850).
Another beauty of the V1.0 Smartly card. Instead of hoping you get 5% but risking the possibility of getting 1%, get a guaranteed 4%. Oh please credit card gods, let the grandfathered stay grandfathered for the foreseeable future!
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Good to know, but most of the problematic ones for me are convenience stores including Wawa and 7-Eleven. It's a dice roll whether they code as grocery or gas, and whether or not they HAVE a gas pump doesn't seem to figure into it.
My CFF is currently still in its year-long SUB that is 5% on both of them: Chase includes the "misc. market" MCC in groceries, so P2 is trying to use the CFF for that fact, and it covering the gas it ends up coding as is just lucky... so far. But when thats over almost all our cards that have both grocery and gas categories only count "supermarket" for groceries... the only other card with both specific categories that would include convenience stores is my Gemini, and that's only at 2% and gas/EV at 4%. At which point, sticking with one of the USB flat rate choices (4% and 4.5%) will be better/safer.
AU - 
Biz - 
Sock - 
Chopping Block - 
@xenon3030 wrote:Not a trustworthy method, since the marchants may change MCC all the time.
Note that Chatgpt may make mistakes as well
It's an exaggeration to say merchants change their MCC all the time. Certainly they can change, but my experience is that the overall rate of change is extremely slow.
Yes, ChatGPT and the others make mistakes. But the alternative method, human guessing, is far more falible. The stakes with any particular purchase are very low, so I'm willing to take my chances.
I'm not claiming it's a perfect technique. Just pointing out an option for people who might want to try it. It's the best tool for this job I have yet encountered.
