<prompt> Human: It occurs to me that instead of withholding federal tax, they could give it to me in my paycheck. I could then grow the money and pay in full at the end of the year. Since the IRS knows my wages and receives the forms from my employer, the numbers should all work out the same. I know that I can do this through my W-4.The main advantage is that I can save money by growing the tax before I owe it. As long as I plan for the expense, I dont anticipate any issues. Are there any serious downsides or gotchas with this approach?Edit: Apparently I have a fundamental misunderstanding of when taxes are owed. This is apparently a bad idea. Never mind.  <response>: Dont do this.First, most forms require that attest that the form is accurate.Secondly, the IRS will assess penalties for owing large sums of money at the end of the year. Because, if your employer does not withhold then you are required to submit taxes periodically. The only time this makes any sense is if you are crazy poor or have outrageous deductions. In which case, filling out an accurate W-4 will ensure the minimum withholdings. 