A New York state judge will impose the sentence after jurors in Manhattan found two Trump Organisation affiliates guilty of 17 criminal charges last month.
Manhattan District Attorney Alvin Bragg's office, which brought the case, is still conducting a criminal probe into Mr Trump's business practices. The case has long been a thorn in the side of the Republican former president, who calls it part of a witch hunt by Democrats who dislike him and his politics.
At a four-week trial, prosecutors offered evidence that Mr Trump's company covered personal expenses such as rent and car leases for executives without reporting them as income, and pretended that Christmas bonuses were non-employee compensation.