And since the Feds collect a tax on income, only honest citizens are taxed for their work.
A national sales tax or national property tax would be less easily avoided by the dishonest.
Twice last winter I found myself with a snowblower unable to start and a mandatory removal job staring me in the face. Both times a young person happened to be walking by carrying a shovel who offered to help and I took them up on it.
Somehow in all the excitement of the snowstorm the conversation never evolved into tax forms, insurance, or any other goofy stuff but cleared snow.
Black economy, or white out regulations? I suppose it depends. I do know everyone was happy afterwords. The city, county, state and postal service. Along with the young folks and me.