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Trusted Accounting & Tax Services in Philadelphia, PA
At Internal Tax Service, we serve as a trusted financial partner for small businesses and individuals in Philadelphia. Our team of certified professionals delivers comprehensive accounting, tax planning, and QuickBooks support services tailored to help clients reduce costs, manage cash flow, and minimize tax liabilities. With decades of combined experience in financial advisory, we specialize in creating customized strategies that align with business goals while ensuring compliance with evolving tax regulations.

Our commitment to hands-on service and proactive financial guidance has made us a preferred choice for businesses seeking sustainable growth. We prioritize transparency, offering clear documentation and actionable insights to empower clients in making informed decisions. From audit assurance to business incorporation, our services are designed to provide peace of mind and long-term financial success.
Services
Small Business Accounting Tax Preparation QuickBooks Support Business Incorporation Audit Services Tax Planning IRS Problem Resolution Bookkeeping Services
Highlights and features
  • We offer 20+ years of experience in Philadelphia small business tax strategies
  • Our team includes certified CPAs with specialized QuickBooks expertise
  • We provide proactive tax planning to minimize liabilities year-round
  • We deliver hands-on financial guidance with transparent pricing
  • We specialize in audit preparation and financial statement assurance
Services
Tax Preparation
Our Philadelphia CPAs prepare accurate business and individual tax returns while identifying all available deductions. We specialize in corporate, LLC, and nonprofit tax filings with multi-state expertise. Our process ensures compliance while maximizing refunds through strategic E-filing and year-round tax planning.
QuickBooks Support
We provide comprehensive QuickBooks setup, training, and ongoing support for small businesses. Our services include chart of accounts configuration, invoice template creation, and data file cleanup. We help businesses leverage QuickBooks for efficient financial management and streamlined year-end tax preparation.
Business Incorporation
We guide clients through selecting optimal business structures (LLC, S Corp, C Corp) and handle incorporation processes. Our services include tax planning for new businesses, financial setup, and ongoing advisory to ensure compliance with regulatory requirements while maximizing tax advantages.
Audit Services
We offer audit, review, and compilation services following AICPA standards. Our assurance services include risk management, due diligence, and internal control recommendations. We provide accurate financial reporting for investors, creditors, and donors with varying levels of assurance based on client needs.
Tax Planning
Our proactive tax planning identifies year-round strategies to minimize liabilities. We develop customized plans for businesses and individuals, focusing on deductions, credits, and structural advantages. Services include quarterly tax projections and long-term financial optimization strategies.
People
Karen Sharpe
CEO, CPA
Karen leads our firm with 25+ years of accounting expertise, specializing in small business tax strategies and financial planning for Philadelphia businesses.
Richard Muloney
CPA
Richard provides specialized tax preparation and audit services, with a focus on corporate compliance and multi-state tax filings for growing businesses.
Ali Kikimono
Associate
Ali supports clients with QuickBooks implementation and bookkeeping solutions, helping businesses streamline financial operations and improve cash flow management.
Kevin Thompson
Associate
Kevin assists with business incorporation and tax planning, guiding new entrepreneurs through entity selection and regulatory compliance requirements.
Questions
What accounting services do you offer for small businesses?
We provide full-service accounting including bookkeeping, financial statements, budgeting, cash flow management, and QuickBooks support tailored to Philadelphia small businesses.
Do you handle tax preparation for different business structures?
Yes, we prepare tax returns for corporations, LLCs, S Corps, partnerships, and individuals, including multi-state filings and nonprofit Form 990 requirements.
Can you help with QuickBooks setup and training?
We offer complete QuickBooks setup, chart of accounts configuration, invoice templates, and ongoing support to help businesses maximize accounting software efficiency.
What tax planning services are available?
Our tax planning includes quarterly projections, deduction optimization, entity structure analysis, and year-round strategies to minimize tax liabilities for businesses and individuals.
Do you provide audit and assurance services?
Yes, we offer audit, review, and compilation services following AICPA standards, including risk management and internal control recommendations for businesses and nonprofits.