When his skyscraper in Chicago proved a disappointment, Donald Trump defaulted on his loans, sued his bank, got much of the debt forgiven — and largely avoided paying taxes on it, the New York Times reported. The financial crisis was in full swing when Trump traveled to Chicago in late September 2008 to mark the near-completion of his 92-floor skyscraper. He and his family hoped the Trump International Hotel & Tower would cement their company’s reputation as one of the world’s marquee developers of luxury real estate. Instead, the skyscraper became another disappointment in a portfolio filled with them. Construction lagged. Condos proved hard to sell. Retail space sat vacant. The president’s federal income tax records show for the first time that, since 2010, his lenders have forgiven about $287 million in debt that he failed to repay. The vast majority was related to the Chicago project. When the project encountered problems, he tried to walk away from his huge debts. For most individuals or businesses, that would have been a recipe for ruin. But tax-return data, other records and interviews show that rather than warring with a notoriously litigious and headline-seeking client, lenders cut Trump slack — exactly what he seemed to have been counting on. Big banks and hedge funds gave him years of extra time to repay his debts. Even after Mr. Trump sued his largest lender, accusing it of preying on him, the bank agreed to lend him another $99 million — more than twice as much as was previously known — so that he could pay back what he still owed the bank on the defaulted Chicago loan, records show.