Nicholson, Michaud & Nadeau, CPAs is a certified public accounting firm based in Waterville, Maine. The firm serves individuals and small businesses with tax, bookkeeping, payroll, audit, and consulting support, drawing on source-stated experience serving central Maine for over 30 years.

The practice focuses on practical accounting and financial needs for existing clients and accepts new clients only through referrals. Its listed services include tax services, bookkeeping and payroll, audit, and consulting, giving clients a single firm for recurring compliance, recordkeeping, and advisory needs.