Question

When a taxpayer's income increases $1,000 and the taxes owed increases from $7,867 to $8,177, the marginal tax rate is ______ percent?

Answer 1

The marginal tax rate is 31%  
$8,177 minus $7,867 equals $310 
 That's $310 taxed for that $1,000 
 $310 is 31% of $1,000 
 $7,867 equals 31% of $25,377.42 
 $25,377.42 plus $1,000 equals $26,377.42 
 $26,377.42 times 31% equals $8,177