Hello. All advice is appreciated. I'm trying to see if I can further increase my 401K contribution by stating a higher deduction number on my W4 form from my employer. I currently use a zero, which pretty much gives me the highest refund at the end of the year. I also know this is not the smartest way to handle my money (basically giving the government an interest free loan). But by assigning a higher deduction number, like a one or two, I'll get more in my paycheck and less at the end of the year. What I would like to know is if I could redirect the extra money I get in my gross paycheck with a higher deduction number to my 401K? I would rather my extra gross pay go directly into my 401K. I also hope that by increasing my 401K contribution, say from 10 to 15 percent, I'll further reduce my taxable income and that this would counter a possible tax payment (because of the higher deduction numbers on the W4). Does this make sense to anyone? Or does anyone know of a good website that would allow me to come up with the best plan regarding this scenario? Thank you.