Simple tax program with python

I'm having difficulty completing my income tax program for my class, mainly the output of the Social Security Number(SSN). I believe the rest of the code is correct based on the task I was given. I have the user input the SSN with hyphens, the program splits it so it can verify the number is a valid SSN, and then I want it to output the original SSN. Please let me know if I should make any other changes.

Original Task Compute an income tax according to the rate schedule below:

• No tax paid on the first $15,000 of income
• Tax of 5% on each dollar of income after $15,000 to $30,000
• Tax of 10% on each dollar of income after $30,000
• Each taxpayer is represented with a person's SSN, name, and income

Write a Python program to do the following:

• Prompt the user to enter the appropriate data
• Check if entered value for income is greater than 0
• If yes, calculate and display person's name, SSN, and tax
• If not, display an error message to prompt user to correct

Here is my code:

def main():
    name = input("Enter full name: ")
    ssn = input("Please enter social (###-##-####): ")
    income = eval(input("Please enter income: "))

    ssn = ssn.split("-")
    tax = 0.0

    if income >= 30000:
        tax = ((income - 30000) * .1) + (15000 * .05)
        income = income - tax
    elif income >= 15000:
        tax = (income - 15000) * .05
        income = income - tax
    elif income >= 0:
        income = income
    else:
        print("Please enter a valid income of more than $0!")

    if list(map(len,ssn)) != [3,2,4]: 
        print("Please enter a valid Social Security Number!")
    else:
        print("\nYour name:",name)
        print("Your SSN: ",ssn)
        print("Amount you will pay in tax: $",tax)
        print("Amount you will have after tax: $",income)

main()