The phrase "a flat state" is correct and usable in written English.
It can be used to describe a geographical area that has little to no elevation change, often referring to the landscape of a region.
Example: "Nebraska is often referred to as a flat state, with vast stretches of plains and minimal hills."
Alternatives: "a level region" or "a flat terrain".
North Carolina has a flat state income tax of 5.25%.
Pennsylvania has a flat state income tax, at just 3.07%.
If you live in a state that has a flat state tax (like PA), you can double check to make sure that your withholding is correct by multiplying the amount in box 16 by the flat tax rate.
I wanted to stay in this small town in a flat state, because of our magnitude and bond.
Consequently, a relatively flat state was sought to avoid a possible interaction between these two environmental factors (land elevation and temperature).
At either end of the cavernous third-floor halls, Republican senators, Democratic assemblymen and varied lobbyists and hangers-on lounged about, waiting to approve — as if on their leaders' command — legislation that would reshape a nearly flat state tax code into something more progressive.
The effect is rather like the rising of a Chinese lantern from its flat state into a rounded object.
Thus, it is theorized that inflation drove the Universe to a very nearly spatially flat state, with almost exactly the critical density.
This may be due to Florida's low variability in land elevation (a relatively low and flat state).
Suburban districts with enrollment increases and a large number of low-income students could see annual aid increases as big as 20percentt, while most of the state's 31 poor urban districts would receive a 2percentt increase this year and flat state support after that.
A flat, 3percentt state income tax was replaced with a graduated 3 to 5percentt levy, a liberalized abortion law was passed and strict water pollution controls were implemented.
