Diane S. Oneill — CPA in Endicott, New York
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Diane S. Oneill
Certified Public Accountant
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Licensed in Maryland
Verified
Licensed
97 Mountain Road, Endicott, New York 13760
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About Diane S. Oneill
Diane S. Oneill is a certified public accountant (CPA) based in Endicott, New York.
With over 10 years of experience, she specializes in providing tax planning, retirement account tax reporting, and basic accounting services to small and medium-sized businesses and family-owned enterprises.
Her areas of expertise include business tax services and tax compliance, allowing her to effectively address the complex financial needs of her clients.
Residents of Broome County can contact her for professional guidance on managing their financial affairs and meeting tax obligations.
Services Offered
Individual Income Tax Preparation and Filing
Business Tax Return Preparation and Filing
Self-Employed and 1099 Tax Preparation
Partnership Tax Return Preparation (Form 1065)
S-Corporation Tax Return Preparation (Form 1120-S)
C-Corporation Tax Return Preparation (Form 1120)
LLC Tax Return Preparation and Entity Classification
Tax Loss Harvesting and Investment Strategy
IRS Audit Representation and Defense
IRS Audit Preparation and Documentation
IRS Appeals and Dispute Resolution
IRS Collections and Levy Resolution
Payroll Tax Compliance and Audit Defense
Client Types Served
Individual Taxpayers and Wage Earners
Married Couples Filing Joint Returns
High-Income Earners and Professionals
Retirees and Fixed Income Individuals
Multi-State Residents and Tax Optimization Clients
Families with Investment Income and Rental Properties
Small Business Owners (1-50 Employees)
Medium-Sized Business Owners (50-500 Employees)
Home-Based Business and Side Hustle Operators
Technology and IT Consultants
Specialties
Basic Accounting Services
Corporate Tax Services
Bookkeeping Services
Individual Tax Returns
Payroll & Sales Tax Services
Sales Tax Compliance Services
General Accounting Services
Other Services
Tax Planning & Advisory Services
IRS Notice & Correspondence Services
Retirement Account Tax Reporting(Form 5500, IRA reporting)
Industry Expertise
Small and Medium-Sized Businesses (SMB)
S-Corporation Tax Planning and Compliance
Partnership Accounting and Tax Services
Limited Liability Company (LLC) Tax Planning
Solo Entrepreneur and Freelancer Tax Services
Family-Owned Business Accounting and Tax Planning
Personal Income Tax Preparation for High Net Worth Individuals
Languages Spoken
English
Availability
Available Mon-Fri, 9am-5pm. Please contact for appointment.
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