I need a formula for cell D22 which calculates the tax amount, based on a
value in B6. The tax rules a 0.5% of the dollar amount from $0.01 to
$55,000.00 PLUS 1.00% of the dollar amount from $55,000.01 to $250,000.00
PLUS 1.50% of the dollar amount from $250,000.01 to $400,000.00 PLUS 2.0% of
the dollar amount from $400,000.01 and up.

The values in B6 will be all over the map, and so far, I have not yet
figured out how to write a formula which ignores calculation of the higher
percentages, when using a value within a lower threshold, ie. if I use
$350,000, I would need the formula to calculate the 0.5%, the 1.00% and the
1.50%, but obviously not the 2.0%, since under the $400,000 threshold.

Anyone have any ideas or a snippet of formula syntax that would work?