Transcript for Donald Trump's Tax Strategy
Reporter: Good morning, robin. Trump remains on the defensive this morning after telling George last Friday that he fights hard to pay as little tax as possible. His tax rates, what he pays in taxes is nobody's business. His secrecy about his finances continued to fuel his critics. You got to ask yourself, why doesn't we want to release them. Reporter: Going back decades trump has been a master of tax loopholes. When he bought this yacht, he said he did it for the good of America. I like to see the great jewels of the country being owned by the people of this country and it had a big play as to why I bought this boat. Reporter: But it didn't include paying the state sales tax to New Jersey where the boat was docked. He used off-shore and out of state corporations to buy the yacht. If there's a loophole Donald is laser focused on it. Reporter: The latest, a tax dispute over the sprawling championship trump national golf course he owns in New York. Trump said that the club is worth $50 million. His tax lawyers claim it's only worth $1.3 million, cutting trump's tax bill by 90%. Trump said he represents the little guy. But the little guy is going to have to pay his taxes here. Reporter: In at least to go cases trump came under official scrutiny. An 1996 investigation into the jewelry store on 5th avenue leaked trump and others to a scheme in taxes. The tax scam is a jeweller sends an empty box out of state. But Donald Trump lived across the street from the jeweller. There's no way that he didn't know that this was improper conduct. Reporter: In another case in the 1980s New York City officials said that an audit found that trump and his part partners at the grand Hyatt hotel has shortchanged the city of $2.2 million auditors found trump in this this letter signed, formally authorized that understated the fees. Sneaky? It was very sneaky. He cheated the city. Reporter: The hotel disputed that audit. Despite the letter that trump signed, trump had no management role. In a statement to ABC news said, trump said the allegations raised in our story are decades-old and not worthy of a response. Let's talk about this now with megyn Kelly of Fox News. Welcome to "Good morning
This transcript has been automatically generated and may not be 100% accurate.