If i withdrew money from my 401K to pay for TCS Post Grad program for my son, can I deduct that cost?
Bottom line answer is no. What you paid for is not a "qualified education expense" so none of it is deductible as such. Additionally, the 401K withdrawal will result in you receiving a 1098-R reporting that withdrawal to you, and to the IRS. You will pay taxes on that withdrawal and it will also increase your AGI - potentially putting you in a higher tax bracket.
On top of that, if it was an early withdrawal, then in addition to taxes you will also pay a 10% early withdrawal penalty.
