There are probably as many different methods of it as those people who have an explanation of what it is! Everyone uses the term to define a different process.
One sort of universal aspect of it is....that the tax rate charged should be the same, or flat, for any amount or type of income. (Why some feel this is much of a simplification over the only 3 or so currently used is anyones guess). Here there are some videos which may give more insite on the matter: http://www.sutree.com/Learn.aspx?q=tax
Both sales tax and flat tax are a fixed percentage.
For example, Slovakia - 19% flat tax rate (Corporate income tax, Personal income tax, and Value-Added Tax)
Sales tax
A flat tax is one that does not vary. It has a constant marginal rate and is usually utilized by individual or corporate income.
A proportional income tax on individual income with no regard to how large your income is
flat tax
Both sales tax and flat tax are a fixed percentage.
The tax payers who would normally pay a higher rate than the flat tax rate. With a flat tax, it sure would be easier for the tax commission and IRS to review tax returns.
Illinois has a flat tax for individual income.
flat income tax
For example, Slovakia - 19% flat tax rate (Corporate income tax, Personal income tax, and Value-Added Tax)
Sales tax
proportional tax
Daniel Mitchell has written: 'The Flat Tax' -- subject(s): Income tax, Flat-rate income tax
A flat tax is one that does not vary. It has a constant marginal rate and is usually utilized by individual or corporate income.
Jack was up all night in his flat, working out his tax return.
proportional tax or flat tax