ERB 28 Jan 2026 Exercise Tax Cal

# Excerise 1
# Define tax brackets
Tax_Gap = [
    (50000, 0.02),
    (100000, 0.05),
    (150000, 0.10),
    (200000, 0.15),
    (float("inf"), 0.25)
]

while True:
    income_str = input("Please input your annual income for Yr 2023: ")

    # Input checking
    if income_str == "":
        print("Nothing input")
        continue

    # Number check
    try:
        income = float(income_str)
    except ValueError:
        print("Please input numbers only")
        continue

    # Accumulated tax
    tax = 0
    p_limit = 0
    for limit, rate in Tax_Gap:
        if income > limit:
            tax += (limit - p_limit) * rate
            p_limit = limit
        else:
            tax += (income - p_limit) * rate
            break
    tax = round(tax, 2)

    # Standard tax
    tax2 = round(income * 0.16, 2)

    # Payable tax
    pay_tax = min(tax, tax2)

    # Printout
    print("\nThe Result is as follows:\n")
    print(f"{'Your income:':<30}${income:>15.2f}")
    print(f"{'Projected accumulated tax:':<30}${tax:>15.2f}")
    print(f"{'Projected standard tax:':<30}${tax2:>15.2f}")
    print(f"{'Payable tax:':<30}${pay_tax:>15.2f}")

    # Ask user to continue or not
    cont = input("\nDo you want to continue? (Y/N): ")
    if cont.upper() != "Y":
        print("Thank you for using the tax calculator. Goodbye!")
        break