A jury has found the 77-year-old guilty after a high-profile trial. It comes just six months before he goes head to head with Joe Biden in a bid to return to the White House.
Donald Trump has become the first former US president to be criminally convicted.
In a historic decision, a New York jury has found him guilty of falsifying business records to commit election fraud.
He was found guilty of all 34 counts he faced. Unanimity was required for any verdict.
The former president is set to be sentenced on 11 July – days before the start of the Republican National Convention on 15 July where Trump is expected to be formally nominated for president.
The verdicts plunge the country into unexplored territory ahead of the election on 5 November as opinion polls show Trump and Joe Biden locked in a tight race for the White House.
Trump faces a maximum sentence of four years in prison, though others convicted of the same crime often receive shorter sentences, fines or probation.
Speaking outside the court, Trump said the conviction was a “disgrace” and that he is “a very innocent man”.
He said the trial was “rigged” and that the judge was “conflicted” and “should never have been allowed to try this case”.
“This is long from over,” Trump added.
After the conviction, he travelled in a convoy of black jeeps to dinner in New York City.
Meanwhile, a spokesperson for Joe Biden said in a statement: “No one is above the law.”
“Donald Trump has always mistakenly believed he would never face consequences for breaking the law for his own personal gain,” said Michael Tyler, the Biden-Harris campaign’s communications director.
“The threat Trump poses to our democracy has never been greater. He is running an increasingly unhinged campaign of revenge and retribution, pledging to be a dictator ‘on day one’ and calling for our Constitution to be ‘terminated’ so he can regain and keep power,” he added.
“A second Trump term means chaos, ripping away Americans’ freedoms and fomenting political violence – and the American people will reject it this November.”
Alvin Bragg, the New York district attorney who brought the case against Trump, said in a press conference after the verdicts that his team “followed the facts and the law without fear or favour”.
He thanked the NYPD, court staff and the jury, saying the latter was “careful and attentive”.
“I feel a deep gratitude to work alongside them to be a part of this system,” he said.
“While this defendant may be unlike any other in American history, we arrived at this trial and ultimately today at this verdict, in the same manner as every other case,” Mr Bragg added.
Meanwhile, Michael Cohen, Trump’s former fixer and a key witness in the trial, said: “Today is an important day for accountability and the rule of law.
“While it has been a difficult journey for me and my family, the truth always matters.”
He also posted on X celebrating the verdicts.
