Comparative credit card rate tracking published by Credit Karma's card research team shows credit union-issued cash back cards continuing to compete aggressively on rate against major bank card products through the first quarter of 2026.
The coverage attributes credit unions' rate competitiveness to their not-for-profit, member-owned operating structure, which can allow for narrower profit margins on card products compared to large publicly traded banks.
Analysts quoted in the coverage caution that credit union card benefits -- such as purchase protection or travel insurance -- are less consistently available compared to premium big-bank cards, meaning rate alone shouldn't be the only comparison point.
Our guide on how credit unions beat big banks on cash back covers this rate-versus-benefits tradeoff in more depth for readers considering a credit union card.
The coverage notes membership eligibility barriers have loosened industry-wide in recent years, with many credit unions now offering open membership through affiliated nonprofit organizations.