About Peter

Peter Downing is a principal in Marcum’s Costa Mesa Office and a member of the Firm’s Tax and Business Services Division. He serves as the national leader of Marcum’s Tax Credits and Incentives Group, where he oversees the utilization of federal and state tax credits and incentives for clients Firm-wide.

Mr. Downing joined Marcum in 2017 after 15 years as managing partner of a firm specializing in tax incentives, which he co-founded in Newport Beach, California. At his predecessor firm, Mr. Downing saved his clients more than $50 million through the utilization of federal and state tax credits and various incentive programs, such as the California Enterprise Zone, Federal Empowerment Zone, Federal Work Opportunity Tax Credit, and California New Jobs Tax Credit, and reimbursements through California’s ETP Program.

Mr. Downing has more than 25 years of experience serving clients in the retail, restaurant & hospitality, manufacturing & distribution, finance, and mortgage banking industries. His early career was spent as a senior manager at a “Big Four” accounting firm, where he worked extensively in the incentives area. He also served as vice president of tax for a large banking holding company in Providence, RI, where he focused on tax minimization projects and the bank’s corporate tax compliance functions.

Industry Focus

Financial Services


Master of Business Administration,
Providence College

Bachelor of Science in Accounting,
New Hampshire College