DY, I was referring to the word “technical”. Do you understand now?
Nisht,
You are confusing sales taxes and income taxes. In Quill Corp. v. North Dakota, the Supreme Court ruled that a business must have a physical presence in a state for that state to require it to collect sales taxes. However, the court explicitly stated that Congress can overrule the decision through legislation. So far as I know proposals to do this have failed.
So far as the cleaning lady is concerned, if what you pay her is below a certain amount you might not be required to withhold anything. Her obligation is her problem (although I did onceread that Rav Soloveichik said that there is a problem of “lifnei iver”if you know that she will not report).