Missouri 2026 Regular Session

Missouri Senate Bill SB931

Introduced
1/7/26  
Introduced
12/31/69  

Caption

SB 931

Summary

SB 931 revises Missouri’s income tax deficiency notice procedures in section 143.611, RSMo. Under current law, when the Department of Revenue determines that a taxpayer owes additional tax or is due a refund, it must notify the taxpayer of the deficiency or overpayment. The bill keeps those core procedures in place, including the requirement that notices explain the reason for the proposed assessment and that notices may be sent electronically at the taxpayer’s request. The main change is how deficiency notices are mailed. The bill replaces the current requirement that notices be sent by certified or registered mail with regular first-class mail. It also preserves special handling rules for joint returns, deceased taxpayers, persons under legal disability, and corporations that have terminated, while allowing notices to be sent to a designated recipient if the department has been informed of one.

Impact

The bill amends section 143.611, RSMo, which governs notice procedures for Missouri individual income tax assessments and refunds. Its practical effect is to reduce the mailing burden and likely the administrative cost for the Department of Revenue by allowing ordinary first-class mail instead of certified or registered mail for notices of deficiency. The bill does not change the underlying tax liability rules, deficiency thresholds, or refund procedures, but it does alter the formal method of service used to notify taxpayers and related parties.

Sentiment

The available record shows no committee transcript, vote tally, or recorded opposition, so there is no documented debate to indicate strong support or resistance. Based on the bill’s narrow administrative focus, the measure appears to be a technical or procedural update rather than a controversial policy change. The caption and text suggest a generally neutral, efficiency-oriented purpose.

Contention

The only apparent point of contention is the change from certified or registered mail to regular first-class mail for deficiency notices. Supporters would likely view this as a cost-saving and administrative simplification measure, while potential critics could argue that it reduces proof of mailing or notice reliability for taxpayers. No specific legislators, agencies, or stakeholder groups are identified in the available materials as taking a formal position.

Companion Bills

No companion bills found.

Previously Filed As

MO SB666

Modifies provisions relating to mail sent by state entities

MO SB67

Modifies provisions relating to tax credits

MO SB151

Modifies provisions relating to taxes

MO SB5

Modifies provisions regarding income taxes, including the imposition of a 4% flat income tax

MO SB161

Modifies provisions relating to income taxes

MO SB228

Modifies provisions relating to income taxes

MO SB138

Modifies provisions relating to income taxes

MO SB458

Modifies provisions relating to income taxes

MO SB220

Modifies provisions relating to income taxes

MO HB520

Modifies provisions relating to mail sent by state agencies

Similar Bills

No similar bills found.