Why is my statement being printed twice in an if statement in Java?

I’m coding in java and I’m curious as to why the System.out.println function is being ran twice in my if statement.
If I input "married" and "10000" in the scanner, I get the following, where everything is correct except the duplicated "Because your income is less than 15,000 and you’re married, your rate is 10%":

What is your marital status? Married or Unmarried?married  
Marital status is documented as: married  
Please Enter your income:    
10000
Income is documented as: 10000.0
Because your income is less than 15,000 and you're married, your rate is 10%
Because your income is less than 15,000 and you're married, your rate is 10%
The amount is taxes that you owe is: 1000.0

Here is my code for both classes:

public class TaxCalculator {

    public double calculateTax (String maritalStatus, double taxableIncome)
    {
        if (maritalStatus.equals("married"))
        {
            if (taxableIncome < 15000)
            {
                System.out.println("Because your income is less than 15,000 and you're married, your rate is 10%");
                return taxableIncome * 0.1;
                 
            }
            else
            {
                System.out.println("Because your income is more than 15,000 and you're married, your rate is 20%");
                return taxableIncome * 0.2;
            }
        }
        return taxableIncome * 0.3;
    }
    
    
    }

import java.util.Scanner;
public class TaxCalculatorTester extends TaxCalculator {

public static void main(String[] args) {
    TaxCalculator sample = new TaxCalculator();
     Scanner askScanner = new Scanner (System.in);
        System.out.print ("What is your marital status? Married or Unmarried?"); 

        String input = askScanner.next();
        String maritalStatus = input;
        System.out.println("Marital status is documented as: " + maritalStatus);
     

    System.out.println("Please Enter your income: ");
    double income = askScanner.nextDouble();
    System.out.println("Income is documented as: " + income);
    //double taxDue;
    //int status;
    
    if (input.equals("married"))
    {
        sample.calculateTax(maritalStatus, income);
        System.out.println("The amount is taxes that you owe is: " + sample.calculateTax(maritalStatus, income));
    }
    else
    {
        sample.calculateTax(maritalStatus, income);
        System.out.println("Because you're unmarried, your rate is 30%");
        System.out.println("The resulting amount in taxes you owe is: " + sample.calculateTax(maritalStatus, income));
    }
    

}



}

I would ideally like for any response in the "married" field to have the program return "Because you’re married / unmarried, your rate is __" but any time I put it within the if statement it duplicates it for some reason. Since there’s only one option for being unmarried, I was able to move the System.out.println code into the tester, but I couldn’t do the same with the married option.

>Solution :

You call the calculateTax function in lines 23 and 24 of main which since the println function is in the function, it prints twice. I would recommend either putting the println statements in if (input.equals("married")) in the tax calculator, or putting the println statements in if (taxableIncome < 15000) in main. You should only have to call the function once.