CPLR 5001(a) provides, in pertinent part, that "in an action of an equitable nature, interest and the rate and date from which it shall be computed shall be in the court's discretion." Pursuant to 5001(b), "interest shall be computed from the earliest ascertainable date the cause of action existed, except that interest upon damages incurred thereafter shall be computed from the date incurred."
Bistro Shop LLC v. N.Y. Park N. Salem, Inc., NY Slip Op 06696 (1st Dep't September 24, 2019)
Here is the decision.