Local Taxes & Fees in O'Fallon, MO (2026)
1 verified local taxes & fees rules for O'Fallon, Missouri, sourced directly from the municipal code and official government pages.
Verified from official government sources
Business Tax Classification
O'Fallon Code Section 605.030 splits its business license fee schedule into two classifications, merchants and manufacturer/warehouse operations, each billed a base fee plus a per-square-foot charge above a 5,000-square-foot threshold. Merchants pay 3 cents per square foot; manufacturers and warehouses pay 2 cents, both capped at $1,000 a year per location.
O'Fallon Splits Business License Fees By Type
Some RestrictionsO'Fallon Code § 605.030
The following fee schedule shall apply to all merchants, businesses and occupations, manufacturers and warehouses except those exempted in Section 605.015, above... 1. Merchants (excluding warehouse and manufacturing)... b. For the license year 2025-2026 and subsequent license years, the annual license fee per location for businesses defined as merchants in Section 605.010, above, shall be fift...
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County ordinances apply to unincorporated areas and may supplement O'Fallon city rules.
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