A small number of posters report that American Express disqualifies tax payments. Others report that American Express allows tax payments for rewards and bonuses. We do not have sufficient data to see the pattern and know what other factor(s) determine the outcome. In my opinion there is nothing in American Express' published terms to justify exclusion.
IS there a Chase thread on this topic paying taxes to earn the SUB?
One poster used PayPal linking Capital Venture X card and the county tax charge posted as a utility and he got x2 points credit from C1.(was not trying to get SUB credit).
Thanks for the redirection as it's an interesting thread on random SUB approval with AMEX and different taxes.
I used PayPal (PP) linking a Chase CBIC biz card to pay county taxes (charge still pending.) to try to get the SUB.
PP has not charged me 2.35% fees so far for using a CC that my county charges using a CC so that's one win.