New Mexico doc fees: no cap, and what buyers actually pay

• New Mexico does not cap the doc fee. Dealers set it themselves, and there is no legal ceiling to point at.
• Buyers here commonly report around $339.00. That is a market figure drawn from reported deals, not a government number — treat it as a reference point for what is normal, not as a limit.
• The rule: 12.2.4.20, .21, .24 NMAC (AG Consumer Protection, replaced 2026-09-09): no dollar cap; a new-vehicle ad may leave out a dealer transfer service fee if it discloses the amount..

• The doc fee is NOT taxed in New Mexico — you pay the fee, but no tax on top of it.
• With no cap in play, the doc fee is simply part of the total you are negotiating. What matters is the out-the-door number, not which line the money sits on.
• The high end of what buyers report here is around $450.00 — above that you are an outlier, which is worth saying out loud at the desk.

• The dealer's transfer service fee (its doc fee) and any service contract are not part of the 4% tax. They carry gross receipts tax instead, at the rate where the dealer is. In 2026 that rate is 7.625% in Albuquerque, 8.1875% in Santa Fe and 8.39% in Las Cruces, and it runs from 5.25% to about 9.4% across the state. On a $400 fee the tax is about $30. The total shown here does not include that tax, because the calculator cannot add it yet.
• New Mexico does not cap the doc fee in dollars. The state's advertising rule calls it a dealer transfer service fee, and a dealer may not use the words "documentary fee" for a charge the law does not require.

Source: New Mexico Taxation & Revenue Department — Motor Vehicle Excise Tax · rules last verified Oct 11, 2026. Methodology.