Absolutely its complete BS. All companies use ERP systems like SAP and PeopleSoft which already calculate all of the complicated rules, so any changes to tax l

Absolutely its complete BS. All companies use ERP systems like SAP and PeopleSoft which already calculate all of the complicated rules, so any changes to tax law are vetted (hopefully) by tax professionals and software engineers before release. Compare this with the average tax filer (or HR Block employee), who has no fucking idea what they're supposed to do.