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Solution: Personal Income Tax Calculator

Explore constructing a personal income tax calculator in Ruby. Understand how to apply if-else and case-when control structures to handle tax brackets and compute income tax effectively.

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Solution using if-else

Ruby 3.1.2
annual_income = annual_income.to_i
income_tax = if annual_income > 0 && annual_income <= 18200
				 puts "No tax"
				 0
			 elsif annual_income >= 18201 && annual_income <= 37000
			 	 (annual_income - 18200) * 0.19
			 elsif annual_income >= 37001 && annual_income <= 80000
		 		 (annual_income - 37000) * 0.325 + 3572
			 elsif annual_income >= 80001 && annual_income <= 180000
				 (annual_income - 80000) * 0.37 + 19822
			 else
				 (annual_income - 180000) * 0.45 + 54232
			 end
income_tax = income_tax.round(2)

Explanation

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