TruckCodex

Diesel Fuel Tax in Montana

State excise tax on diesel fuel plus the federal $0.244 per gallon. Combined per-gallon total shown below.

Per-gallon rates

State
$0.300
Federal
$0.244
Combined Total
$0.544
Variable Rate?
No
Effective Date

Related pages

Carrier hub
Montana Carriers
Active motor carriers based in Montana.
Index
All Fuel Tax Rates
Diesel excise tax for all 50 states and DC.
Data
Weekly Diesel Prices
EIA retail diesel prices by PADD region.
Tool
Trip Cost Estimator
Calculate fuel costs by distance, MPG, and price.

More to explore

All Fuel Tax Rates
50-state diesel excise reference table
Montana Carrier Hub
Motor carriers based in Montana
IFTA Guide
How interstate fuel-tax reporting works
Trip Fuel Estimator
Calculate fuel cost by distance, MPG, and price

Data sources & freshness

TruckCodex aggregates official public-sector datasets. See the Source registry for dataset-level coverage and the Freshness log for last-import timestamps.

FMCSA

Census, SAFER, SMS, Licensing & Insurance (L&I), roadside inspections, crashes, and authority history.

Refreshed daily.
NHTSA

Vehicle recall campaigns, defect investigations, and consumer safety complaints (SCRS).

Refreshed daily.
EIA

Retail diesel and gasoline price history and state fuel-tax tables.

Refreshed weekly.
Transport Canada

Cross-border carrier registry and Canadian recall campaigns where applicable.

Refreshed weekly.

TruckCodex is an independent aggregator; it is not affiliated with FMCSA, NHTSA, EIA, or Transport Canada. Always verify compliance-critical information directly with the originating agency.