Now that we have had a couple of weeks to digest the IRS’s guidance in Notice 2018-68 on the Tax Cuts and Jobs Act’s (TCJA’s) amendments to Code Section 162(m), it’s a good time to take a closer look at the “grandfathering” rule. As a reminder, the TCJA (i) eliminated the “performance-based compensation” exception to Section 162(m)’s $1 million limit on the deductibility of covered employee compensation, (ii) expanded and made permanent the group of…