Todd Spangler NY Digital Editor Podcast ad revenue in the U.S. — after seven years of double-digit growth — hit a slowdown in 2023, with overall spending increasing 5% to $1.93 billion, according to a new report. The tepid growth in podcast ad spending last year came amid a “challenging advertising climate” that disproportionately affected mid-tier companies, according to research conducted by PwC for the Interactive Advertising Bureau (IAB).