Tax

A tax is a compulsory charge or other levy imposed on an individual or a legal entity by a state or a functional equivalent of a state (e.g., tribes, secessionist movements or revolutionary movements). Taxes could also be imposed by a subnational entity.

Tax rates

Taxes are most often levied as a percentage, called the tax rate, of a certain value, the tax base (how much income and assets one has, earns, spends, inherits, etcetera). An ad valorem tax is one where the tax base is the value of a good, service, or property. Sales taxes, tariffs, property taxes, inheritance taxes, and value added taxes are different types of ad valorem tax. An ad valorem tax is typically imposed at the time of a transaction (sales tax or value added tax (VAT)) but it may be imposed on an annual basis (property tax) or in connection with another significant event (inheritance tax or tariffs). An alternative to ad valorem taxation is an excise tax, where the tax base is the quantity of something, regardless of its price: for example, in the United Kingdom, a tax is collected on the sale of alcoholic drinks that is calculated by volume and beverage type rather than the price of the drink.

Related Topics:
Ad valorem - United Kingdom

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An important distinction when talking about tax rates is to distinguish between the marginal rate and the average rate. The average rate is the total tax paid divided by the total amount the tax is paid on, while the marginal rate is the rate paid on the next dollar of income earned. In a ' tax system, these can be very different. For example, if income is taxed on a formula of 5% from $0 up to $49,999, 10% from $50,000 to $99,999, and 15% over $100,000, a taxpayer with income of $175,000 would pay a total of ((.05*50,000)+ (.10*50,000) + (.15*75,000)), or $18,750. His average rate would be 10.7%, but his marginal rate would be 15%.

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