U.S. PPI December 2025: Producer prices rose 0.5 percent month over month, led by a 0.7 percent increase in services, while goods prices were flat. Core PPI rose 0.4 percent, marking the eighth straight monthly increase. On an unadjusted basis, final demand prices rose 3.0 percent in 2025, with core final demand up 3.5 percent year over year.