MI HB4543

Extends the weatherization funding requirements through the 2026-2027 fiscal year, continuing provisions that mandate at least $6 million for weatherization when federal block grant funding remains at or above 90% of the prior year, or at least $5 million when below that threshold

Changes the inflation index used to adjust the home heating credit's maximum costs and total household resource limits from the Detroit Consumer Price Index to the United States Consumer Price Index for all urban consumers

Maintains the existing home heating credit structure for Michigan homestead residents, with base credits ranging from $272 for 0-1 exemptions to $601 plus $76 for each exemption over 6

Requires annual adjustment of maximum heating fuel costs based on the US Consumer Price Index for household energy, capped at 10% increase per year

Takes immediate effect upon enactment