MI HB6166

Allows convention and tourism bureaus in counties with populations exceeding 1,500,000 to file marketing program notices proposing assessments on transient facility owners to fund tourism and convention marketing programs

Establishes tiered assessment rate caps on room charges: 3% through December 31, 2024; 3.5% from January 1, 2025 through December 31, 2030; and 4% beginning January 1, 2031

Requires bureaus to mail marketing program notices to all transient facility owners in the proposed assessment district and allows owners representing at least 40% of total owners or rooms to request a referendum within 40 days

Implements referendum process where facility owners vote with one vote per room; assessment becomes effective if majority approves, with a 30-day waiting period after certification

Prohibits more than 2 referenda or notices in any single calendar year and limits assessment districts to having only one active assessment at any time