Donald Trump reported losses consecutively on his tax returns for a decade, according to reported testimony of his former accountant.

What Happened: Trumps erstwhile accountant, Donald Bender, said that the former U.S. president reported losses from 2009 to 2018, reported The New York Post.

Bender, a partner at accounting companyMazars USA, reportedly made the disclosure when he took the stand in Manhattan Supreme Court on Tuesday as part of a tax fraud trial involving Trumps company.

In 2009 and 2010 alone, Trump reported losing close to $1 billion, said The New York Post report.

See Also: Trump Lawyer Gets Roasted By Appeals Court Over Special Master Appointment: 'What Are We Doing Here?'

Why It Matters: Benders testimony revealed details about Trumps taxes, which the former president strived to keep under wraps, noted the report.

Mazars prepared The Trump Organizations taxes until February after discovering that statements made by the ex-president about his finances were unreliable, according to the report.

Benders reportedly denied that hed seen evidence of alleged off-the-books compensation paid to former Trump Organization CFO Allen Weisselberg and others. When questioned how he was sure about it, he said, Because I probably wouldve had a heart attack.

Trump received a legal setback on Tuesday after the U.S. Supreme Court cleared the release of his tax returns to the chief tax-writing committee of Congress.

Read Next: Trump's Companies Got A Thorough Cleaning After He Became President, Says Former CFO