The maximum contribution you can make to your traditional IRA is $6,500 if you are age 50 and older. Your CPA was probably telling you only what you needed to contribute to not owe taxes. I am not able to see that, but you can enter the full $6,500 into TurboTax (after you finish entering all income and deductions) and see if you are getting a refund. If you are, then adjust down the $6,500 until your refund is $0. That will be the amount you need to deposit.
