Fees collected in a state are taxes on income, payroll, property, sales, imports, estates and gifts.
Income Tax, Sales Tax (VAT), Wealth Tax
Three types of tax structures are progressive, regressive, and proportional. Progressive taxes increase as income levels rise, regressive taxes impose a greater burden on low-income individuals, and proportional taxes apply the same tax rate to all individuals regardless of their income level.
Sales Tax, Fuel Tax, Car Tax, Income Tax, ect
Three different resonance structures can be drawn for the sulfite ion (SO3^2-), where the double bond can be placed between sulfur and each of the three oxygen atoms.
Due to the very different nature of U.S. states, there is no good answer to this question. The top three sources of income for US States are: sales tax, personal/corporate income tax, and passdown from the Federal government. Given that not all states have both income and sales taxes (some have only one or the other), and that the amount of Federal passdown can vary widely (both between different states, and from year to year), there is no good generalization to be made about the single biggest source of income for a majority of the states. Note, if you want to be strict about the word "revenue" (as in, a source of income that the state directly collects), that would exclude Federal passdown. 41 states impose an income tax (plus 2 which tax only investment/interest income), while 45 impose a sales tax. Two states (Alaska and New Hampshire) have no general sales or income taxes. The latter two states tend to rely on property/business income tax (in NH) and oil production taxes (AK) for the majority of their revenue.
There are three resonance structures for the triiodide ion (I3-). This is because iodine can form different arrangements of single and double bonds between the three atoms.
music, writing, theatre, and dance
cell wall, chloroplasts, and vacuoles
There are three resonance structures of pyrimidines. These structures involve the delocalization of electrons within the aromatic ring of the molecule, leading to different arrangements of double bonds.
Three equivalent Lewis structures are needed to describe the bonding in PO(OH)3. This is because the central phosphorus atom can form three different bonds with the three oxygen atoms, resulting in resonance structures.
The income of a country can be calculated by three different procedures. The products produced, domestic profit and the amount spent.