I fix things all the time for people, computers, small appliances, or do some tree removal, raking, snow shoveling, and so on. Most of the time for cash, sometimes for barter.
I’d like to see Mr. Government come track that.
When they remove paper currency and it’s all done digitally they will track it all.
And of course for simplcity to all of us, take their portion when the transaction takes place.