Wow, I really didn't realize how my 2021 W-4 effected my payroll week to week. I wish I knew to check mid year online through the IRS to see if enough taxes were coming out of my pay. Now I know I can check online anytime to see if enough taxes are coming out of my pay. If not I can change my W-4 any time I want through my employer. I can even write in on a W-4 if I want more money to come out of my payroll to cover taxes so I don't owe at the end of the year. I don't want too much coming out but I don't want to be caught not paying enough at the end of the year. Not Checking my W-4 in 2021 was a costly mistake.