Lower. for families that don't want to owe money next year, or want a bigger refund, and treat withholdings as a short-term piggy bank, withholding more or less tax money from your paycheck is easy. simply ask your employer for a new w-4, and then add or subtract your total allowances here on line five. or an additional dollar amount you want withheld, here on line six. that's it. >> if you're relying on that refund, then you need to look at your situation early in the year. you can't wait until the last paycheck in december and try and figure it out. >> the irs is withholding calculator can a...