The principle of negative income tax stems from the idea of "guaranteed inc
ome". The construction of negative income tax is based on the principle tha
t the tax is paid only by those taxpayers who reach a specified level on in
come. Those with income below such a level would be entitled to receive fin
ancial support (negative tax) from the government.
Negative income tax links taxation with social security payments. It means
the abolition of social security insurance and requires tax authorities to
merge with social security institutions. On the practical level, negative i
ncome tax supposes the replacement of existing taxes. Negative tax should s
ecure not only a minimum income level, but also stimulate the economic acti
vity of taxpayers.
Negative income tax is not currently used in any country. If the Czech Repu
blic decided to introduce it, the country would bear the high costs associa
ted with any radical and innovative tax reform, which, in this case, would
also be combined with a restructuring of the whole of the social security s
ystem.