Taxes in Florissant
Florissant's tax picture carries a real, disclosed nuance: St. Louis County's own highest-in-Missouri effective property-tax rate, layered onto genuinely low home values.
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Learn moreThe highest county rate in Missouri, on a low base
St. Louis County's effective property tax rate ran 1.20% -- the highest among Missouri's 115 counties -- though Florissant's genuinely low home values keep the actual dollar tax bill modest relative to pricier St. Louis County suburbs.
Missouri's real, flat 4.0% state income tax
Missouri's state income tax became a flat 4.0% as of January 1, 2026 (down from a graduated 4.7% top rate), with a statutory mechanism for further phase-down toward 3.7% if revenue triggers are met.
No local earnings tax in Florissant
Unlike St. Louis city, which levies its own separate earnings tax, Florissant carries no additional local income/earnings tax beyond the statewide rate.
Key takeaways
- St. Louis County's 1.20% effective property tax rate ranks highest among Missouri's counties.
- Missouri's flat 4.0% state income tax (effective 2026) applies statewide, including in Florissant.
- Florissant carries no additional local earnings tax, unlike St. Louis city.
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