Maximum number of Allowances in W-4 Tax form?
There isn’t a maximum, just legally whatever brings you close to even. If your wife isn’t employed, increase the allowances by 2. You’d be able to leave it that way. If you get EIC, fill out a form W-5 and turn it in to your payroll department or your boss, to get some of that in your paycheck instead of at the end of the year.