Citi turns 6.5 billion annual card transactions into an advertising business

Citi says 6.5 billion transactions a year sit behind Citi Commerce Media, sorted into more than 700 spending categories ^[3]; spread across more than 70 million customers ^[1], that is roughly 93 transactions per customer a year, close to two a week ^[20]. A grocer's network sees what a shopper does inside its own ecosystem, while a card issuer sees spending across categories ^[7]. Abhinav Anand, head of value cards, lending and commerce at Citi ^[6], said: "We are focusing primarily based on your spending pattern, and that's what the advertisers care the most about" ^[5].

Citi has said less about performance. It said it ran a pilot with retail, payments, technology and health and beauty brands, and that two campaigns produced an average 15% lift in spending compared with people who were not shown ads ^[4]. Citi did not disclose the size of the pilot or the spend behind it ^[22].

EMARKETER, a sister company of Business Insider, forecast that financial media networks would pass $1 billion in US ad spend by 2026 and grow at a compound rate of more than 66% through 2027 ^[9]. Take the $1 billion as the 2026 base and 2027 lands near $1.7 billion for every firm in the field combined ^[21]. That is a small channel to be pricing into. JPMorgan Chase and PayPal launched ad businesses in 2024, and Mastercard and American Express followed in the fall of 2025 ^[10]. Citi is the fifth named entrant chasing that pool ^[25].

Banks are building these units as fintechs and buy-now, pay-later firms such as Klarna and Affirm take their business ^[11]. Anand acknowledged the market is competitive, said he is not too concerned about missing first-mover status given Citi has one of the biggest credit card customer bases, and said earlier entrants had demonstrated the demand ^[12]. Citi expects a boost from Kard, a commerce, media and rewards platform it recently agreed to buy. The deal would give it a built-in market of merchants to sell to ^[13]. Anand said Citi is also betting on a feature that lets advertisers target customers at different points in the purchase cycle ^[14].

Kasha Cacy, chief media officer at the agency Known, said a late entry is not necessarily a drawback if the sales effort is strong from the start ^[15], and that "if you can target off that, it could become very interesting, especially as an alternative to Amazon" ^[16].

The governance question is in the default. Citi customers must opt out if they do not want to see these ads ^[17], so the audience exists unless a customer acts. Anand said the platform was built with data privacy and trust at the forefront, with ads that are personalized and not out of context ^[18]. "We have built our business on years of history of Citi being a very trusted financial advisor," he said ^[19]. Anand also said he sees an opportunity to take spending share from retail media networks with more limited data ^[8]. In my view the opt-out rate decides whether that share is winnable. Citi has not disclosed that number.