BSGBoosterSeatGuide

State law page

Michigan Booster Seat Laws & Requirements (2026)

At least 2 years old in a rear-facing seat or until the child reaches the weight or height limits set by the car seat manufacturer | At least 5 years old in a forward-facing harness seat or until the child reaches the weight or height limits set by the car seat manufacturer | At least 8 years old or 4’9” tall (57”) must be in a booster seat

Start with requirements Try the seat finder
FieldMichigan snapshot
Age requirementAt least 2 years old in a rear-facing seat or until the child reaches the weight or height limits set by the car seat manufacturer | At least 5 years old in a forward-facing harness seat or until the child reaches the weight or height limits set by the car seat manufacturer | At least 8 years old or 4’9” tall (57”) must be in a booster seat
Height requirementSee child-restraint rule; includes height language where listed.
Weight requirementSee child-restraint rule; includes weight language where listed.
Fine / penaltyVerify fine with state source; GHSA notes first-offense fines vary by state.
Last checkedGHSA reviewed by SHSOs June 2025; extracted 2026-07-23
Verification levelIndex source; official state verification pending
Child restraint requiredAt least 2 years old in a rear-facing seat or until the child reaches the weight or height limits set by the car seat manufacturer | At least 5 years old in a forward-facing harness seat or until the child reaches the weight or height limits set by the car seat manufacturer | At least 8 years old or 4’9” tall (57”) must be in a booster seat
Adult safety belt permissibleUnder 13 must be buckled in the back seat of the vehicle, if a back seating position is available | All occupants in front seat and under 16 riding in the back seat must be properly buckled in
Verification levelIndex source; official state verification pending

Sources

Law and source links

Index source: https://www.ghsa.org/state-laws-issues/child-passengers

Statute/source text: GHSA child passenger law summary; Safe Kids state law tracker cross-check

Safety guidance

Even when Michigan law allows a seat belt, NHTSA, CDC, and AAP guidance may still recommend a booster until the vehicle belt fits properly.

Requirements guide

Understand age, height, weight, and seat belt fit.

Read requirements

Age guide

See when children typically start and stop using boosters.

Read age guide