https://www.cnn.com/2020/02/18/politics/bloomberg-business-cnntv/index.html https://www.taxpolicycenter.org/taxvox/could-president-trump-sell-his-business-tax-free He will sell his companies tax free. It will be the biggest ripoff of all times of the US tax payer.
Like IRAs and 401ks taxes are deferred but there is always a cut at the apple by the government every year from deferred taxes that are now due.