Senior Tax Manager

Senior Tax Manager

Location: Tampa, FL

Role Type: Full Time

About Us

At 1Source Partners, we serve as trusted advisors dedicated to supporting the growth and long-term success of our clients. We operate in a dynamic, fast-paced environment where relationships, precision, agility and collaboration drive everything we do. Our firm provides comprehensive accounting, tax, assurance, and advisory services tailored to the unique needs of business owners, executives, and independent professionals.

Our team is composed of experienced professionals who bring both technical expertise and a deep understanding of business operations. We value strong client relationships and work collectively to deliver insightful guidance, exceptional service, and measurable results.

Job Overview

The Tax Senior Manager is responsible for overseeing all aspects of complex tax compliance, planning, and strategy across the organization. This role leads and develops a team of tax professionals, ensuring high-quality service delivery, adherence to regulatory requirements, and the implementation of best practices. The Tax Senior Manager acts as a strategic advisor to senior leadership, providing guidance on business transactions, risk management, and tax-efficient decision-making. By driving process improvements, fostering technical expertise, and maintaining strong client and internal relationships, the Tax Senior Manager plays a critical role in mitigating risk, optimizing tax outcomes, and supporting the company’s broader financial and operational objectives.

Key Responsibilities

• Oversee the preparation, review, and filing of complex federal, state, and local tax returns, including individual (Form 1040), corporate (Form s1120, 1120-S), partnership (Form 1065), trusts, estates, and tax-exempt organizations (Form 990), ensuring accuracy, compliance, and timely submission.
• Develop and implement advanced tax strategies to minimize client liability, optimize savings, and support strategic business transactions such as mergers, acquisitions, reorganizations, and estate planning.
• Lead comprehensive tax planning initiatives, proactively identifying and managing tax risks, staying current on evolving regulations, and advising senior leadership on tax-efficient business decisions.
• Oversee tax provisions and quarterly/year-end reporting, ensuring compliance with ASC 740 and other accounting and reporting standards.
• Maintain a strong grasp of critical performance indicators such as realization and leverage to monitor and improve profitability.
• Develop a deep understanding of the firm’s business model, service lines, and strategic priorities to align tax strategies with organizational goals.
• Proactively seek opportunities to expand client relationships, introduce new services, and contribute to revenue growth.
• Collaborate with other service lines (e.g., audit, advisory) to identify and execute cross-selling opportunities that enhance client value.
• Serve as the primary point of contact for complex client engagements, building and maintaining strong relationships, understanding evolving client needs, and identifying opportunities for advisory or planning services.
• Direct and coordinate responses to tax audits, disputes, and inquiries from tax authorities, ensuring proper documentation and strategic resolution of issues.
• Collaborate with external advisors, auditors, and consultants to enhance compliance, reporting, and strategic planning, while effectively communicating tax strategies, insights, and recommendations to senior management and stakeholders.
• Manage, mentor, and develop a team of tax professionals, providing technical guidance, performance feedback, and professional development opportunities to maintain high-quality service delivery.
• Champion process improvements, technology adoption, and best practices within the tax function to enhance efficiency, accuracy, and client service quality.
• Participate in networking, thought leadership, and marketing initiatives to strengthen the firm’s brand and visibility in the marketplace.

Qualifications

Required

• Bachelor’s degree in Accounting, Finance, or related field.
• One of the following active accreditations obtained:
• Certified Public Accountant (CPA)
• Licensed attorney
• 10+ years of experience in tax, including extensive experience with compliance, planning, and reporting in addition to 3-5 years in a management or supervisory position.
• In-depth knowledge of U.S. federal, state, and local tax laws.
• Experience reviewing partnership and/or trust documents
• Strong understanding of tax accounting (ASC 740) and corporate tax strategy.
• Strong leadership, communication, and project management skills.
• Excellent research and writing skills

Preferred

• Advanced degree such as MST, MAcc, JD, or LLM
• Prior Big 4 or large CPA firm experience
• Knowledge of fund accounting and general ledger accounting
• Experience with international tax issues

Benefits:

• Bonus eligibility
• 100% Paid Health/Dental/Vision
• Generous PTO policy
• 401k plan with employer contributions
• CPA & CPE reimbursement
• Professional development
• Opportunities for growth

Why Join Us?

• Dynamic and Growing Firm: Join a forward-thinking firm experiencing exciting growth across multiple service lines. We foster an environment that prioritizes agility, upholds the highest standards of quality and accountability, encourages collaboration, nurtures strong relationships, and is guided by a shared commitment to excellence.
• Commitment to Professional Development: We invest in our people through regular performance reviews, support for professional education and certifications, in-house training opportunities, and a structured coaching and mentorship program. These initiatives are designed to help you expand your expertise, strengthen your skills, and advance your career within the firm.
• Collaborative and Client-Focused Culture: Work alongside professionals who take pride in building strong client relationships and delivering exceptional service. Our team-oriented approach ensures you have the support and resources needed to succeed.
• Comprehensive Compensation and Benefits: We offer a competitive compensation structure, performance-based incentives, and a comprehensive benefits package designed to support your overall well-being and work-life balance.