The ruling paves the way for DA Cyrus Vance to apply a grand jury subpoena for those records.
Investigators also need to learn whether the firm presented distinct values to taxation authorities.
Additionally, there are concerns regarding hush payments to girls who alleged affairs by Trump, which he has denied.
Two lower federal courts disregarded those fresh statements and ordered compliance.
Trump subsequently registered an emergency program with the Supreme Court at October... and today, four weeks after, the justices have voted to deny his petition to keep the lower court decisions.
Concerning enforcement of the subpoena, the DA's office mentioned a previous filing:"As we have always made clear, we don't think your customer's claims have merit, and we expect that the Supreme Court, following briefing, will refuse your petition for interim relief, in which point our workplace will be liberated to apply the Mazars Subpoena, irrespective of whether your customer makes the decision to continue to look for certiorari."
The DA's office hopes to have immediate ownership of 8 years' worth of Trump's private and company tax returns. The office recently caused a former prosecutor, Mark Pomerantz, to inspect the material and also present into a grand jury.