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Business Details
27 Years
experience
Expert Accounting & Tax Solutions in Swarthmore, PA
Founded over 25 years ago, our boutique advisory firm specializes in empowering business owners through personalized financial and operational strategies. We combine decades of expertise with cutting-edge technology to deliver tailored solutions for accounting, tax planning, and business development. Our team prioritizes proactive communication, ensuring clients stay informed about tax updates, legislative changes, and technological advancements that impact their goals.

By fostering long-term relationships, we provide responsive support and strategic guidance to help businesses navigate challenges and achieve sustainable growth. Our commitment to integrity-driven practices and client-centric service has earned us the trust of small to mid-sized enterprises nationwide.
Services
Tax Planning Bookkeeping Strategic Consulting Start-up Support CFO Services
Details
  • Year established: 1999
Highlights and features
  • We offer 25+ years of specialized expertise in accounting and business advisory services.
  • Our team provides personalized strategies tailored to your company's unique needs.
  • We utilize secure, advanced technology for efficient financial management and reporting.
  • Our responsive support ensures timely answers to your tax and compliance questions.
  • We prioritize proactive education on legislative changes impacting your business.
What people say
Responsive support Personalized strategies Tax compliance expertise Proactive guidance Trusted partner
Services
Tax Planning
Our tax planning services combine in-depth analysis with proactive strategies to minimize liabilities and ensure compliance. We provide customized education on evolving tax laws, income tax return preparation, and long-term planning tailored to your business structure and financial goals. Our team stays ahead of legislative changes to protect your interests.
Bookkeeping
We offer comprehensive bookkeeping solutions including financial data analysis, loan covenant reporting, and statement preparation. Our technology-driven approach ensures accurate, real-time tracking of your financial health while maintaining strict security protocols to protect sensitive business information.
Strategic Consulting
Our strategic consulting focuses on long-range planning, capitalization strategies, and operational growth. We collaborate with clients to develop customized roadmaps for business development, leveraging 25+ years of experience in guiding companies through expansion and succession planning.
Start-up Support
From entity selection to Small Business Association resources, we provide end-to-end support for new ventures. Our services include financial structuring, compliance setup, and strategic planning to establish a strong foundation for sustainable growth.
CFO Services
Our portable CFO services deliver executive-level financial expertise without full-time costs. We provide capitalization strategies, performance analysis, and decision-support tools to help business owners make informed strategic choices aligned with their long-term objectives.
People
Sonya Pappas
Partner & CEO
With over 25 years of experience, Sonya founded GSM Advisory to provide personalized financial guidance to small businesses. She specializes in strategic planning and tax compliance, focusing on empowering entrepreneurs through education and tailored solutions.
Gus Pappas
Partner & COO
Gus Pappas brings decades of operational expertise to GSM Advisory. He works closely with clients to resolve challenges and implement growth strategies, combining technical accounting knowledge with practical business development experience.
Questions
What accounting services do you offer for small businesses?
We provide bookkeeping, tax planning, financial statement preparation, and strategic consulting tailored to small business needs.
How can you help with tax compliance?
Our services include income tax return preparation, tax analysis, legislative updates, and long-term planning to ensure compliance and minimize liabilities.
Do you support start-up businesses?
Yes, we offer entity selection guidance, SBA resources, and financial structuring to help new businesses establish strong foundations.
What is your approach to FinCEN filing requirements?
We provide specialized guidance on Corporate Transparency Act compliance, including beneficial ownership reporting and ongoing regulatory requirements.
How do you deliver your services remotely?
Our secure online platform enables virtual meetings, document sharing, and collaborative financial management across all our service areas.