Java Reference
In-Depth Information
The constants
KILOGRAMS_PER_POUND
and
METERS_PER_INCH
are defined in lines
15-16. Using constants here makes programs easy to read.
You can use nested
if
statements to write a program for computing taxes.
Key
Point
The United States federal personal income tax is calculated based on filing status and taxable
income. There are four filing statuses: single filers, married filing jointly or qualified widow(er),
married filing separately, and head of household. The tax rates vary every year. Table 3.2 shows
the rates for 2009. If you are, say, single with a taxable income of $10,000, the first $8,350 is
taxed at 10% and the other $1,650 is taxed at 15%, so, your total tax is $1,082.50.
VideoNote
Use multi-way
if-else
statements
T
ABLE
3.2
2009 U.S. Federal Personal Tax Rates
Marginal
Tax Rate
Married Filing Jointly
or Qualifying Widow(er)
Single
Married Filing Separately
Head of Household
10%
$0 - $8,350
$0 - $16,700
$0 - $8,350
$0 - $11,950
15%
$8,351- $33,950
$16,701 - $67,900
$8,351 - $33,950
$11,951 - $45,500
25%
$33,951 - $82,250
$67,901 - $137,050
$33,951 - $68,525
$45,501 - $117,450
28%
$82,251 - $171,550
$137,051 - $208,850
$68,526 - $104,425
$117,451 - $190,200
33%
$171,551 - $372,950
$208,851 - $372,950
$104,426 - $186,475
$190,201 - $372,950
35%
$372,951
˛
+
$372,951
˛
+
$186,476
˛
+
$372,951
˛
+
You are to write a program to compute personal income tax. Your program should prompt
the user to enter the filing status and taxable income and compute the tax. Enter
0
for single
filers,
1
for married filing jointly or qualified widow(er),
2
for married filing separately, and
3
for head of household.
Your program computes the tax for the taxable income based on the filing status. The filing
status can be determined using
if
statements outlined as follows:
if
(status ==
0
) {
// Compute tax for single filers
}
else if
(status ==
1
) {
// Compute tax for married filing jointly or qualifying widow(er)
}
else if
(status ==
2
) {
// Compute tax for married filing separately
}
else if
(status ==
3
) {
// Compute tax for head of household
}
else
{
// Display wrong status
}
For each filing status there are six tax rates. Each rate is applied to a certain amount of taxable
income. For example, of a taxable income of $400,000 for single filers, $8,350 is taxed at 10%,
(33,950 - 8,350) at 15%, (82,250 - 33,950) at 25%, (171,550 - 82,250) at 28%, (372,950 -
171,550) at 33%, and (400,000 - 372,950) at 35%.
Listing 3.6 gives the solution for computing taxes for single filers. The complete solution
is left as an exercise.
