Missouri doc fee cap: $620.79 and what it covers

• Missouri caps the documentary fee at $620.79. A dealer cannot charge more than that, and a figure above it is a billing error rather than a negotiating position.
• The cap is inflation-indexed, so it moves on a schedule rather than staying fixed. The figure above is the one currently in force.
• The rule: RSMo 301.558; 12 CSR 10-26.231 - $620.79 for 2026, CPI-indexed each February 1; same fee to every retail customer, itemized. TAXABLE per DOR dealer tax matrix.

• The doc fee is part of the taxable amount in Missouri, so sales tax is calculated on it as well. A larger doc fee costs you more than the fee itself.
• Because the cap is a legal ceiling rather than a required charge, a dealer is free to charge less. It is a smaller lever than the vehicle price, but it is not fixed by law at the maximum.
• Taxed at Missouri's 5.225% to 11.488%, a $620.79 doc fee really costs between $653.23 and $692.11.

• The doc fee is capped at $620.79 for 2026; the cap rises with inflation each February. It is taxed.

Source: MO DOR Tax Breakdown Report + jurisdiction totals + boundary database (quarterly); RSMo 144.069, 144.070, 32.087 · rules last verified Oct 2, 2026. Methodology.