The fee stops being flat at twenty-four thousand pounds
The Montana Department of Transportation publishes a schedule headed “MCS 100% Fees”, marked “Revised 05/2026” in its own header, laid out as a grid. Weight bands run down the left. Across the top are twelve columns — one month, two months, three months marked as a quarter year, and so on up to one year.
For every band up to 24,000 pounds, the twelve columns carry the same figure. A vehicle in the 16,001 to 18,000 pound band is $28.00 in the one-month column and $28.00 in the one-year column. The 18,001 to 20,000 band is $37.50 in all twelve. The 20,001 to 22,000 band is $47.00 in all twelve. The 22,001 to 24,000 band is $70.00 in all twelve. Below that, a truck up to 16,000 pounds is $21.00 across the row, and the manufacturer-rated bands — half ton at $7.00, three-quarter ton at $12.50, one ton at $17.50 — behave the same way.
At 24,001 pounds the structure changes. The 24,001 to 26,000 pound band reads $7.50 for one month, $15.00 for two, $22.50 for a quarter year, and on up to $90.00 for a full year. Every band above it does the same thing: the one-month figure is a twelfth of the annual figure, and the intermediate columns fill in proportionally. The 44,001 to 46,000 pound band runs $25.00 monthly to $300.00 annually. The 70,001 to 72,000 band runs $47.21 to $566.50.
The practical consequence for a startup is the opposite of what the numbers first suggest. A heavier truck registered in October pays roughly a quarter of its annual weight fee for the remaining quarter. A lighter truck registered in October pays the entire annual figure for the same three months. The lighter unit is cheaper in absolute terms and is charged less proportionately favourably, and mid-year timing therefore matters more the lighter the vehicle is.
Two figures make the point in a single comparison. A 22,001 to 24,000 pound truck registered for one month is charged $70.00 — its full annual rate. A 24,001 to 26,000 pound truck registered for the same one month is charged $7.50. Two thousand pounds of declared weight, in that direction, and the one-month cost falls by more than a factor of nine.
This is a feature of the schedule as published rather than a proration rule stated in the statute. MCA 61-10-201 sets the annual amounts and contains no proration provision of its own. The month-by-month grid is the Department’s administration of those amounts, and it is cited here as the Department’s schedule, which is what it is.
- MDT “MCS 100% Fees”, Revised 05/2026: every band up to 24,000 lb carries an identical figure in all twelve month columns.
- Up to 16,000 lb, $21.00; 16,001–18,000, $28.00; 18,001–20,000, $37.50; 20,001–22,000, $47.00; 22,001–24,000, $70.00 — flat across the row in each case.
- From 24,001 lb the schedule prorates: 24,001–26,000 runs $7.50 for one month to $90.00 for a year.
- 44,001–46,000 lb: $25.00 monthly to $300.00 annually. 70,001–72,000 lb: $47.21 to $566.50.
- A one-month registration costs $70.00 at 23,000 lb and $7.50 at 25,000 lb.
- The statute sets annual amounts only; the month grid is the Department’s schedule.