<prompt> Human: I had an idea to not deduct any taxes from my pay next year, and instead deposit that income in a savings account. When 2018 is over, I would send a check from that account to the IRS for my tax liability. Is this an idea that would work? Any advice to calculate my tax amount to deposit?I am salaried with consistent pay. Should be easy to calculate, right?  <response>: Im a CPA and strongly advise against it. For starters, depending on how much you owe you risk having an underpayment penalty imposed on you. While it depends on your exact situation, generally if your tax due is over 1000 its a good bet the penalty would apply. Beyond the penalty, I dont think its worth the hassle or risk. Too many things moving parts for too little return less than 2 interest rate, most of it for less than a year. 