- 12th May 2019
- 14:07 pm
Java Programming Assignment Challenge - Income Tax Calculator
This program calculates the income tax. You can modify the tax brackets and rates as per your country's tax regulations. Keep in mind that this is a simple example, and real-world tax calculations may involve additional factors and complexities.
Java Assignment Solution: Program -
import java.util.*;
/**
* @author XYZ
*
*/
public class TaxCalculator {
private static int income;
private static int deduction;
private static String status;
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
// Using Scanner for Getting Input from User
Scanner reader = new Scanner(System.in);
System.out.print("Enter your yearly income without comma or $ sign\n>");
income = reader.nextInt();
reader.nextLine(); // skip the enter
while (true) {
System.out.print("Enter your filing status (Single, Jointly, Seprately)\n>");
status = reader.nextLine();
// Check the valid status
status = status.toLowerCase();
if (status.equals("single") || status.equals("jointly") || status.equals("seprately")) {
break;
} else {
System.out.println("Invalid input. Please try again.");
System.out.println("DEBUG: status = " + status);
}
}
System.out.print("Enter standard deduction without comma or $ sign\n>");
deduction = reader.nextInt();
int TaxIncome = income - deduction;
System.out.println("Your taxable income is $" + income + " - $" + deduction + " = $" + TaxIncome);
double totalTax = 0.0;
double higherRate = 0.0;
// if this is single
if (status.equals("single")) {
if (TaxIncome <= 9325) {
totalTax += taxBaracket(0, 9325, 10.00, TaxIncome);
higherRate = 10.00;
} else if (TaxIncome <= 37950) {
totalTax += taxBaracket(0, 9325, 10.00, TaxIncome);
totalTax += taxBaracket(9325, 37950, 15.00, TaxIncome);
higherRate = 15.00;
} else if (TaxIncome <= 91900) {
totalTax += taxBaracket(0, 9325, 10.00, TaxIncome);
totalTax += taxBaracket(9325, 37950, 15.00, TaxIncome);
totalTax += taxBaracket(37950, 91900, 25.00, TaxIncome);
higherRate = 25.00;
} else if (TaxIncome <= 191650) {
totalTax += taxBaracket(0, 9325, 10.00, TaxIncome);
totalTax += taxBaracket(9325, 37950, 15.00, TaxIncome);
totalTax += taxBaracket(37950, 91900, 25.00, TaxIncome);
totalTax += taxBaracket(91900, 191650, 28.00, TaxIncome);
higherRate = 28.00;
} else if (TaxIncome <= 416700) {
totalTax += taxBaracket(0, 9325, 10.00, TaxIncome);
totalTax += taxBaracket(9325, 37950, 15.00, TaxIncome);
totalTax += taxBaracket(37950, 91900, 25.00, TaxIncome);
totalTax += taxBaracket(91900, 191650, 28.00, TaxIncome);
totalTax += taxBaracket(191650, 416700, 33.00, TaxIncome);
higherRate = 33.00;
} else if (TaxIncome <= 418400) {
totalTax += taxBaracket(0, 9325, 10.00, TaxIncome);
totalTax += taxBaracket(9325, 37950, 15.00, TaxIncome);
totalTax += taxBaracket(37950, 91900, 25.00, TaxIncome);
totalTax += taxBaracket(91900, 191650, 28.00, TaxIncome);
totalTax += taxBaracket(191650, 416700, 33.00, TaxIncome);
totalTax += taxBaracket(416700, 418400, 35.00, TaxIncome);
higherRate = 35.00;
} else {
totalTax += taxBaracket(0, 9325, 10.00, TaxIncome);
totalTax += taxBaracket(9325, 37950, 15.00, TaxIncome);
totalTax += taxBaracket(37950, 91900, 25.00, TaxIncome);
totalTax += taxBaracket(91900, 191650, 28.00, TaxIncome);
totalTax += taxBaracket(191650, 416700, 33.00, TaxIncome);
totalTax += taxBaracket(416700, 418400, 35.00, TaxIncome);
totalTax += taxBaracket(418400, Integer.MAX_VALUE, 39.60, TaxIncome);
higherRate = 39.60;
}
} else if (status.equals("jointly")) {
if (TaxIncome <= 18650) {
totalTax += taxBaracket(0, 18650, 10.00, TaxIncome);
higherRate = 10.00;
} else if (TaxIncome <= 75900) {
totalTax += taxBaracket(0, 18650, 10.00, TaxIncome);
totalTax += taxBaracket(18650, 75900, 15.00, TaxIncome);
higherRate = 15.00;
} else if (TaxIncome <= 153100) {
totalTax += taxBaracket(0, 18650, 10.00, TaxIncome);
totalTax += taxBaracket(18650, 75900, 15.00, TaxIncome);
totalTax += taxBaracket(75900, 153100, 25.00, TaxIncome);
higherRate = 25.00;
} else if (TaxIncome <= 233350) {
totalTax += taxBaracket(0, 18650, 10.00, TaxIncome);
totalTax += taxBaracket(18650, 75900, 15.00, TaxIncome);
totalTax += taxBaracket(75900, 153100, 25.00, TaxIncome);
totalTax += taxBaracket(153100, 233350, 28.00, TaxIncome);
higherRate = 28.00;
} else if (TaxIncome <= 416700) {
totalTax += taxBaracket(0, 18650, 10.00, TaxIncome);
totalTax += taxBaracket(18650, 75900, 15.00, TaxIncome);
totalTax += taxBaracket(75900, 153100, 25.00, TaxIncome);
totalTax += taxBaracket(153100, 233350, 28.00, TaxIncome);
totalTax += taxBaracket(233350, 416700, 33.00, TaxIncome);
higherRate = 33.00;
} else if (TaxIncome <= 470700) {
totalTax += taxBaracket(0, 18650, 10.00, TaxIncome);
totalTax += taxBaracket(18650, 75900, 15.00, TaxIncome);
totalTax += taxBaracket(75900, 153100, 25.00, TaxIncome);
totalTax += taxBaracket(153100, 233350, 28.00, TaxIncome);
totalTax += taxBaracket(233350, 416700, 33.00, TaxIncome);
totalTax += taxBaracket(416700, 470700, 35.00, TaxIncome);
higherRate = 35.00;
} else {
totalTax += taxBaracket(0, 18650, 10.00, TaxIncome);
totalTax += taxBaracket(18650, 75900, 15.00, TaxIncome);
totalTax += taxBaracket(75900, 153100, 25.00, TaxIncome);
totalTax += taxBaracket(153100, 233350, 28.00, TaxIncome);
totalTax += taxBaracket(233350, 416700, 33.00, TaxIncome);
totalTax += taxBaracket(416700, 470700, 35.00, TaxIncome);
totalTax += taxBaracket(470700, Integer.MAX_VALUE, 39.60, TaxIncome);
higherRate = 39.60;
}
} else if (status.equals("seprately")) {
if (TaxIncome <= 9325) {
totalTax += taxBaracket(0, 9325, 10.00, TaxIncome);
higherRate = 10.00;
} else if (TaxIncome <= 37950) {
totalTax += taxBaracket(0, 9325, 10.00, TaxIncome);
totalTax += taxBaracket(9325, 37950, 15.00, TaxIncome);
higherRate = 15.00;
} else if (TaxIncome <= 76550) {
totalTax += taxBaracket(0, 9325, 10.00, TaxIncome);
totalTax += taxBaracket(9325, 37950, 15.00, TaxIncome);
totalTax += taxBaracket(37950, 76550, 25.00, TaxIncome);
higherRate = 25.00;
} else if (TaxIncome <= 116675) {
totalTax += taxBaracket(0, 9325, 10.00, TaxIncome);
totalTax += taxBaracket(9325, 37950, 15.00, TaxIncome);
totalTax += taxBaracket(37950, 76550, 25.00, TaxIncome);
totalTax += taxBaracket(76550, 116675, 28.00, TaxIncome);
higherRate = 28.00;
} else if (TaxIncome <= 208350) {
totalTax += taxBaracket(0, 9325, 10.00, TaxIncome);
totalTax += taxBaracket(9325, 37950, 15.00, TaxIncome);
totalTax += taxBaracket(37950, 76550, 25.00, TaxIncome);
totalTax += taxBaracket(76550, 116675, 28.00, TaxIncome);
totalTax += taxBaracket(116675, 208350, 33.00, TaxIncome);
higherRate = 33.00;
} else if (TaxIncome <= 235350) {
totalTax += taxBaracket(0, 9325, 10.00, TaxIncome);
totalTax += taxBaracket(9325, 37950, 15.00, TaxIncome);
totalTax += taxBaracket(37950, 76550, 25.00, TaxIncome);
totalTax += taxBaracket(76550, 116675, 28.00, TaxIncome);
totalTax += taxBaracket(116675, 208350, 33.00, TaxIncome);
totalTax += taxBaracket(208350, 235350, 35.00, TaxIncome);
higherRate = 35.00;
} else {
totalTax += taxBaracket(0, 9325, 10.00, TaxIncome);
totalTax += taxBaracket(9325, 37950, 15.00, TaxIncome);
totalTax += taxBaracket(37950, 76550, 25.00, TaxIncome);
totalTax += taxBaracket(76550, 116675, 28.00, TaxIncome);
totalTax += taxBaracket(116675, 208350, 33.00, TaxIncome);
totalTax += taxBaracket(208350, 235350, 35.00, TaxIncome);
totalTax += taxBaracket(235350, Integer.MAX_VALUE, 39.60, TaxIncome);
higherRate = 39.60;
}
}
int percent = (int) ((totalTax / income) * 100);
System.out.println("You will pay a total of $" + totalTax + " in taxes, or " +
percent + "% of your income, despite begin taxed " + higherRate
+ "% on your highest baracket.");
}
private static double taxBaracket(int lower, int higher, double rate, int totalincome) {
double tax = 0.0;
int usingcalculatortax = 0;
if (totalincome > higher)
usingcalculatortax = higher;
else
usingcalculatortax = totalincome;
tax = ((double) usingcalculatortax - (double) lower) * rate / 100;
System.out.println("- You will pay $" + tax + " in tax on the $" +
((double) usingcalculatortax - (double) lower) + " in the " + rate + "% bracket ($"
+ lower + " - $" + higher + ")");
return tax;
}
}
