arizona: I'm single. I was "told" to check two allowances. I choose 19% for Arizona tax deduction. I'm trying to figure out my Fed; Social Security; Medicare & Arizona Taxes for my gross pay; lets say for $1,228.67. I would 'really' appreciate your help. My company made a mistake on one of my pay checks; therefore, I need to calulate my pay checks now to make sure they are correct. Thank you for your help|||Two should work. Arizona taxes are 23% of federal tax.|||Hi, maybe you should take a look at this web: www.calculateyourincometax.com There you can calculate your income tax, social security and net salary for arizona, the rest of the states of the US and many other countries.