Missouri · DWI · Checked October 2026
Refusing a Breath or Blood Test in Missouri
Refusing a Breath or Blood Test in Missouri: What Are the Rules?
What happens if you refuse a breath or blood test in Missouri.
- Refusal penalty
- 1-year license revocation; evidence of refusal is admissible in court; reinstatement requires SATOP, and interlock if you have a prior alcohol-related enforcement contact; you may petition the circuit court in the county of arrest for review
- License suspension for refusing
- 1-year revocation
- Deadline to challenge
- 15 days
Refusal Penalties in Missouri
1-year license revocation; evidence of refusal is admissible in court; reinstatement requires SATOP, and interlock if you have a prior alcohol-related enforcement contact; you may petition the circuit court in the county of arrest for reviewRSMo 577.020; RSMo 577.041; RSMo 302.574
License Suspension for Refusing in Missouri
1-year revocationRSMo 302.530.1 (15 days of receipt); RSMo 302.525.1-.2; RSMo 302.574.3
More on DWI Law in Missouri
See the full overview of DWI laws in Missouri and read about implied consent laws in every state.
This page summarizes Missouri law from official sources, checked October 2026. It isn't legal advice; a lawyer licensed in Missouri can advise on your case.
Frequently Asked Questions
What Happens if You Refuse a Breath Test in Missouri?
1-year license revocation; evidence of refusal is admissible in court; reinstatement requires SATOP, and interlock if you have a prior alcohol-related enforcement contact; you may petition the circuit court in the county of arrest for review
How Long Is the Suspension for Refusing?
1-year revocation