HBO’s ‘Harry Potter’ Series Reportedly Eyes $250 Million Franchise Record

HBO’s upcoming Harry Potter series has reportedly spent £147.4 million (about $197.1 million) by the end of 2025, while filming was only around halfway complete. The spending suggests the first season could become the franchise’s most expensive screen production, exceeding the reported $250 million budget of the film Harry Potter and the Half-Blood Prince.

Plum Jam Productions, HBO’s UK production company for the series, reported spending about £129 million in 2025 alone. Filming ran from July 2025 to May 2026, with further production costs and post-production, including visual effects, still to come; UK company accounts disclose production spending because dedicated production companies report expenditure when claiming tax incentives.