During and between his terms as president of the United States, Donald Trump has made tens of thousands of false or misleading claims. Fact-checkers at The Washington Post documented 30,573 false or misleading claims during his first presidential term, an average of 21 per day. Commentators and fact-checkers have described Trump's lying as unprecedented in American politics, and the consistency of falsehoods as a distinctive part of his business and political identities. Scholarly analysis of Trump's tweets found significant evidence of an intent to deceive.

Many news organizations initially resisted describing Trump's falsehoods as lies, but began to do so by June 2019. The Washington Post said his frequent repetition of claims he knew to be false amounted to a campaign based on disinformation. Steve Bannon, Trump's 2016 presidential campaign CEO and chief strategist during the first seven months of Trump's first presidency, said that the press, rather than Democrats, was Trump's primary adversary and "the way to deal with them is to flood the zone with shit." In February 2025, a public relations CEO stated that the "flood the zone" tactic (also known as the firehose of falsehood) was designed to make sure no single action or event stands out above the rest by having them occur at a rapid pace, thus preventing the public from keeping up and preventing controversy or outrage over any specific action or event.

As part of their attempts to overturn the 2020 U.S. presidential election, Trump and his allies repeatedly falsely claimed there had been massive election fraud and that Trump had won the election. Their effort was characterized by some as an implementation of Hitler's "big lie" propaganda technique.Multiple sources:

In June 2023, a criminal grand jury indicted Trump on one count of making "false statements and representations", specifically by hiding subpoenaed classified documents from his own attorney who was trying to find and return them to the government. In August 2023, 21 of Trump's falsehoods about the 2020 election were listed in his Washington, D.C. criminal indictment, and 27 were listed in his Georgia criminal indictment. It has been suggested that Trump's false statements amount to bullshit rather than lies, as defined in the 1986 essay On Bullshit.

Veracity and politics

Many academics and observers who study the American political scene have called Trump unique or highly unusual in his lying and its effect on political discourse. "It has long been a truism that politicians lie", wrote Carole McGranahan for the American Ethnologist in 2017, but "Donald Trump is different". He is the most "accomplished and effective liar" to have ever participated in American politics; moreover, his lying has reshaped public discourse so that "the frequency, degree, and impact of lying in politics are now unprecedented".

Historian Douglas Brinkley stated that U.S. presidents have occasionally "lied or misled the country", but none were a "serial liar" like Trump. Donnel Stern, writing in Psychoanalytic Dialogues in 2019, declared: "We expect politicians to stretch the truth. But Trump is a whole different animal", because Trump "lies as a policy", and "will say anything" to satisfy his supporters or himself.

Heidi Taksdal Skjeseth, writing for the Reuters Institute for the Study of Journalism in 2017, described how lies have "always been an integral part of politics". However, Trump was "delivering untruths on an unprecedented scale", during his campaign and presidency. Skjeseth commented that no one in French politics was comparable to Trump in his provision of falsehoods.

Jeremy Adam Smith wrote that "lying is a feature, not a bug, of Trump's campaign and presidency." Thomas B. Edsall wrote "Donald Trump can lay claim to the title of most prodigious liar in the history of the presidency." George C. Edwards III wrote: "Donald Trump tells more untruths than any previous president. There is no one that is a close second." CNN fact checker Daniel Dale wrote "it’s abundantly clear that there is no public official in Washington who lies like Trump" and calls him a "rare, very possibly once-in-a-lifetime political liar."

Repetition Trump is conscious of the value of repetition to get his lies believed. He demonstrated this knowledge when he instructed Stephanie Grisham, his White House press secretary, to use his method of lying: "As long as you keep repeating something, it doesn't matter what you say."

Trump effectively uses the big lie technique's method of repetition to exploit the illusory truth effect, a tendency to believe false information to be correct after repeated exposure. Research has studied Trump's use of the effect.

The Washington Post fact-checker created a new category of falsehoods in 2018, the "Bottomless Pinocchio", for falsehoods repeated at least twenty times (so often "that there can be no question the politician is aware his or her facts are wrong"). Trump was the only politician who met the standard of the category, with 14 statements that immediately qualified. According to the Post Trump repeated some falsehoods so many times he had effectively engaged in disinformation. CNN fact-checker Daniel Dale notes that news outlets may initially check a false claim by Trump, but are unlikely to continue pointing out that it's false, "especially because he is constantly mixing in dozens of new lies that require time and resources to address. And so, by virtue of shameless perseverance, Trump often manages to outlast most of the media's willingness to correct any particular falsehood".

Bullshit It has been suggested that Trump's apparent "avalanche of lies" consists of bullshit rather than of lying as strictly defined. According to Harry Frankfurt's influential 2005 book On Bullshit, the liar cares about the truth and attempts to hide it, while the bullshitter does not care whether what they say is true or false. Eduardo Porter writes in The Washington Post that Frankfurt's bullshitter definition fits Trump: "To subvert the truth, you must first know it, or at least think you do. That’s not Trump’s game." For example, Trump does not, in Porter's argument, have to check US unemployment or inflation statistics to assert that "we inherited from the last administration an economic catastrophe and an inflation nightmare", because for bullshit, the facts do not matter. On the contrary, by ignoring the facts, bullshit has the power to guide group beliefs in a politically desirable direction and thereby to shape group identities. As early as 2015, Jeet Heer wrote that Trump’s propensity to bullshit is not an aberration in his party: "Over the last two decades, the GOP as a party has increasingly adopted positions that are not just politically extreme but also in defiance of facts and science".

Business career

Real estate Within years of expanding his father's property development business into Manhattan in the early 1970s, Trump attracted the attention of The New York Times for his brash and controversial style, with one real-estate financier observing in 1976, "His deals are dramatic, but they haven't come into being. So far, the chief beneficiary of his creativity has been his public image." Der Scutt, the prominent architect who designed Trump Tower, said in 1976, "He's extremely aggressive when he sells, maybe to the point of overselling. Like, he'll say the convention center is the biggest in the world, when it really isn't. He'll exaggerate for the purpose of making a sale." A 1984 GQ profile of Trump quoted him stating he owned the whole block on Central Park South and Avenue of the Americas. GQ noted that the two buildings Trump owned were likely less than a sixth of the block.

The New York state attorney general, Letitia James, opened a civil investigation into Trump's business practices, especially regarding inflated property values. She joined the Manhattan district attorney's office in a criminal investigation into possible property tax fraud by the Trump Organization.

Other investments and debt In 1984, Trump posed as his own spokesman John Barron and made false assertions of his wealth to secure a higher ranking on the Forbes 400 list of wealthy Americans, including by claiming he owned over 90% of his family's business. Audio recordings of these claims were released in 2018 by journalist Jonathan Greenberg.

Following the October 1987 stock market crash, Trump claimed to the press that he had taken no losses and sold all his stock a month before. Per SEC filings he owned large stakes in some companies during the crash. Forbes calculated that Trump had lost at least $19 million related to Resorts International stock, while journalist Gwenda Blair noted $22 million from stock in the Alexander's department store chain.

Challenging estimates of his net worth he considered too low, in 1989 Trump said he had very little debt. Reuters reported Trump owed $4 billion (~$ in ) to more than 70 banks at the beginning of 1990. In 1997, Ben Berzin Jr., who had been tasked with recovering some of the $100 million (~$ in ) his bank had lent Trump, said "During the time that I dealt with Mr. Trump, I was continually surprised by his mastery of situational ethics. He does not seem to be able to differentiate between fact and fiction."

A 1998 New York Observer article reported that Jerry Nadler "flatly calls Mr. Trump a 'liar, quoting Nadler stating, "Trump got $6 million [in federal money] in the dead of night when no one knew anything about it" by slipping a provision into a $200 billion federal transportation bill. During a 2005 deposition in a defamation lawsuit he initiated about his worth, Trump said: "My net worth fluctuates, and it goes up and down with markets and with attitudes and with feelings, even my own feelings... and that can change rapidly from day to day".

Philanthropy David Fahrenthold investigated Trump's claims about his charitable giving and found little evidence the claims are true. Following Fahrenthold's reporting, the Attorney General of New York opened an inquiry into the Donald J. Trump Foundation's fundraising practices, and issued a "notice of violation" ordering the Foundation to stop raising money in New York. The Foundation had to admit it engaged in self-dealing practices to benefit Trump, his family, and businesses.

Sports

In 1983, when Trump was forming a business relationship with the New Jersey Generals football team, he spoke about the team at a public forum. "He promised the signing of superstar players he would never sign. He announced the hiring of immortal coaches he would never hire. He scheduled a news conference the next day to confirm all of it, and the next day never came", CNN reporter Keith Olbermann recalled in 2021. Following the forum, Trump approached Olbermann and, rather than waiting for questions, began speaking into Olbermann's microphone about "an entirely different set of coaches and players than he had from the podium."

In 1987, during testimony regarding an antitrust case between the United States Football League (USFL) and the National Football League (NFL), Trump stated that he had had a meeting with NFL commissioner Pete Rozelle years earlier where Rozelle offered him an NFL franchise in exchange for keeping the USFL a spring-time league and not initiating a lawsuit with the NFL. Rozelle denied having made this offer and stated he was opposed to Trump becoming an NFL team owner, with a person present at the meeting between the two stating that Rozelle told Trump, "As long as I or my heirs are involved in the NFL, you will never be a franchise owner in the league".

In 1996, Trump claimed he wagered $1 million (~$ in ) on 20-to-1 odds boxing match between Evander Holyfield and Mike Tyson. The Las Vegas Sun reported that "while everyone is careful not to call Trump a liar", no one in a position to know about such a sizable wager was aware of it.