KAST BUSINESS CRYPTO CARD

Summary from the TLDR Crypto newsletter

KAST's new business card provides 3% cashback uncapped on the free tier (2% after a 2026 launch bonus expires), 4% on paid plan up to $1M then 3% uncapped, up to 12% APY on idle cash (8% post-bonus), and 5% ad-spend cashback for the first 100 approved businesses.