Try the MASSIVE NYT story several years ago laying much of it out. Trying reading for a change.
But here's one - Fred Trump had millions to give his kids, millions that would face legal inheritance taxes. Before Fred died, a company was formed. It had a board of directors and no employees. The Board were the Trumps. It was called County Building Company. The scheme was that it would buy boilers for big buildings for $5,000 and sell them to Fred Trump for $15,000 to $20,000 again and again and again. It is money laundering that eludes the inheritance taxes. TRY READING DIPSHT.
TAKEAWAYS -
"The Trumps’ tax maneuvers show a pattern of deception, tax experts say"
HERE IS ONE LINK - do your own work.
https://www.nytimes.com/2018/10/02/us/politics/donald-trump-wealth-fred-trump.html