Annual gallons of taxed motor fuel for the 50 states and DC from FHWA Highway Statistics table MF-202.

Reported taxable sales and purchases of motor fuel and highway diesel fuel subject to the State sales tax, the Metropolitan Commuter Transportation District sales tax, each county’s sales tax, and the New York City sales tax.

Annual disposition of highway-user revenues for all levels of government for the 50 states, DC, and territories from the Highway Statistics table HDF. Not available for 2002, 2005, 2006, 2013, 2016, and 2017.

On a monthly basis, each State is required to report to the Federal Highway Administration (FHWA), the amount of gallons taxed by that state. This data is analyzed and compiled by FHWA staff. The data on the amount of on-highway fuel use for each State is then used to attribute federal revenue to each State. Yearly, the FHWA, Office of Policy, provides data from the previous year's data for use in the attribution process. The previous year data is used to provide States added time to review, allowing them to verify that the data report is correct and ready to be used in attribution.

Annual state-reported motor vehicle registration data for the 50 states, DC, and Puerto Rico (2000 - 2010) reported in Highway Statistics table MV-1.

Annual dollars of revenues used by states for highways from various sources for each of the 50 states and DC from the Highway Statistics table SF-1.

Annual reporting of expenditures (disbursements) for State-administered roads by purpose (function) for the 50 states as reported in the Highway Statistics table SF4-C.

Taxation revenue is revenue received from the State’s taxpayers and includes payroll tax, land tax, duties levied principally on conveyances and land transfers, gambling taxes, insurance duty, fire services property levy, motor vehicle taxes and other taxes including congestion levy, metropolitan improvement levy and so on. The State’s taxation revenue is forecast by a process that involves application of DTF’s economic forecasts, where there is a relationship between taxation revenue and economic variables; and use of forward indicators, unpublished revenue data and qualitative information from liaison with relevant stakeholders. This enables an assessment of economic and other factors influencing the tax bases from which taxes are sourced e.g. for payroll tax, an assessment of the outlook for employment. Where necessary, adjustment factors are used to account for other trends or events not captured by the model, such as impact of economic shocks or policy stimulus.