If a child support determination was made in one state and then the parent and child relocate to another state with the court's permission is child support based upon the formula in the state where th?
....the the question trails off with a "...where th" but I
assume the questioner meant the original state where they relocated
from.
Normally the original state's laws will govern until after the
child has lived in the new state long enough and under that new
state's child support modification section of the family code, it
is then allowable to petition for a change. with some exceptions,
in Washington state this is 2 years (i assume as this question was
posted under wash., wash. was one of the states concerned.)
i had a case once where the original state entered an egregious
order, but under the federal "full faith and credit clause" which
tells the states to generally respect the judgments and orders of
other states, our court deferred for two years.
you can view child support modification basics at the link below
,(as well as a Washington state child support calculator):
modification basics: <a
href="http://www.starklawoffices.com/Washington-child-support-laws.aspx">modifying
support</a>
or a calculator here:
http://www.starklawoffices.com/Washington-state-child-support-calculator.aspx