@curiousgeorge6
If your employer will process a W-4 that both claims exempt and asks for a fixed amount, then your only significant issue is to monitor your tax situation throughout the year. Every couple of months, you will need to look at your gross income, your tax withholding, and prepare an estimated tax return to make sure you are on track. If you owe more than $1000 when you file your tax return, you can be assessed underpayment penalties and interest even if you pay in full when you file.
