Yes, those new W-4s are a bear. The software allows you to use the "old" system, for employees who haven't filled a new W-4. But I'm using the new W-4 to drum up business. I've posted on social media about the new forms, how they're way different but ultimately better, and offering free W-4s with a tax return to returning clients, and for people who are not clients, I'm charging $10 for the first and $5 for each thereafter. Then just use the IRS calculator. If your state has a W-4 (ours does) throw that one in, too. People have questions -- that's good for us professionals. We have answers!