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Expert Accounting & Tax Services in Pittsburgh
Winter Accounting & Advising is committed to providing clients with the guidance and resources needed to optimize their financial goals. With over 15 years of experience, our team delivers personalized accounting, tax, and advisory services tailored to small and medium-sized businesses, startups, and individuals. We prioritize prompt attention, responsiveness, and transparency, ensuring clients can focus on their personal and business objectives with confidence. Our founder, William Winter, combines expertise as a CPA and MSA with active involvement in professional organizations like AICPA and PICPA, offering strategic insights into tax compliance, financial planning, and business process improvement.

We serve diverse industries including construction, real estate, healthcare, and technology, emphasizing financial clarity and long-term success. Our approach blends cutting-edge technology with a client-centric philosophy, fostering trust through reliable, on-time results and year-round advisory support.
Services
Business Tax Planning Financial Statement Reporting Individual Tax Preparation Outsourced Accounting Payroll Processing Start-Up Advisory Business Process Improvement
Highlights and features
  • We have over 15 years of experience in accounting and tax advisory services.
  • Our team includes CPA-certified professionals with advanced accounting degrees.
  • We provide personalized service with 24/7 client responsiveness.
  • We specialize in strategic tax planning for multi-state businesses.
  • Our founder actively contributes to Pittsburgh's tax professional community.
Associations and certifications
  • American Institute of Certified Public Accountants (AICPA)
  • Pennsylvania Institute of Certified Public Accountants (PICPA)
What people say
Knowledgeable Personable Easy to talk with Awesome job Very satisfied
Services
Business Tax Planning
We provide comprehensive business tax planning services that help companies minimize liabilities while maintaining compliance with federal, state, and local regulations. Our team analyzes multi-state operations, asset acquisitions, and compensation structures to develop strategic tax-saving opportunities. With expertise in sales tax compliance and income tax return preparation, we ensure businesses receive accurate, timely filings backed by proactive advisory support.
Financial Statement Reporting
Our financial statement reporting services include preparation of income statements, balance sheets, and cash flow statements that provide clear insights into business performance. We conduct horizontal and vertical analysis to identify trends, assess financial health, and support data-driven decision-making. Clients receive customized reports for investors, lenders, and internal management, with options for monthly, quarterly, or annual reporting cycles.
Individual Tax Preparation
We handle individual tax planning and preparation for clients seeking to optimize their personal financial strategies. Our services include federal and state income tax return preparation, estate and gift tax planning, and income tax projections. We focus on minimizing liabilities through strategic deductions while providing year-round advisory support to address evolving tax regulations and personal financial goals.
Outsourced Accounting
Our outsourced accounting solutions manage day-to-day financial operations including accounts payable/receivable, payroll processing, and general ledger maintenance. We offer scalable support ranging from part-time bookkeeping to full controller services, allowing businesses to reduce overhead costs while maintaining accurate financial records. Clients benefit from proactive cash flow analysis and customized reporting tailored to their operational needs.
Business Process Improvement
We help businesses identify inefficiencies and implement process improvements that enhance productivity and reduce operational costs. Our approach includes workflow analysis, automation opportunities, and metric-driven reporting to optimize financial operations. By focusing on simplification and technology integration, we enable companies to redirect resources toward growth initiatives while maintaining compliance with evolving regulatory requirements.
People
William J. Winter
Founder, CPA & MSA
William Winter has over 15 years of experience providing accounting and tax advisory services to businesses and individuals. He holds a Master of Accountancy degree from The George Washington University and is a member of AICPA and PICPA. He actively contributes to Pittsburgh's tax community as Chair of the Western PA Tax Conference Committee.
Questions
What accounting services do you offer for startups?
We provide startup-specific services including business structure selection, tax compliance, financial reporting, and process optimization to support long-term growth.
Do you handle multi-state tax compliance?
Yes, we specialize in multi-state tax analysis and reporting for businesses operating across state lines.
Can you assist with financial statement preparation?
We prepare complete financial statements including income statements, balance sheets, and cash flow statements with customized analysis options.
What industries do you specialize in?
We serve construction, healthcare, real estate, manufacturing, technology, and nonprofit organizations with tailored accounting solutions.
How do I schedule a free consultation?
Contact us at (412) 794-8224 or visit our website to request a free consultation with our accounting team.