Your Mission is My Purpose
Welcome—I'm glad you’re here. I founded Impact Numeric because I believe every meaningful mission needs a strong financial foundation. I am committed to supporting organizations just like yours—the ones working hard to make the world a better place for everyone.
While you devote your energy to creating real-world impact, my goal is to use my skills to help further your mission. I handle the numbers so you can stay focused on the big picture.
Together, we'll build clear, manageable accounting and finance processes that give you confidence in your daily operations and long-term planninig.
Meet Esther Mensah-Sullivan
I’m Esther Mensah-Sullivan, Principal Consultant & Accounting Advisor at Impact Numeric LLC. Throughout my accounting career, I have been devoted to delivering specialized financial accounting expertise exclusively to mission-driven organizations.
I believe that sound, sustainable financial management should be accessible to organizations of every size—not just large corporations. For nonprofits, fiscal clarity is essential for driving community impact. I established Impact Numeric to support nonprofit organizations with managing the complexities of fund accounting, compliance, and reporting—allowing your leadership team to focus on creating positive change beyond the numbers.
The Expertise Behind Your Financial Clarity
When you partner with Impact Numeric, you work directly with me. I bring nearly 20 years of advanced accounting and financial management experience, spanning both public accounting and private industry.
With over a decade dedicated exclusively to the nonprofit sector, I have served as a trusted fractional partner to a diverse range of organizations managing multimillion-dollar budgets ($500k to $10M+).
I understand the unique and stringent requirements of nonprofit financial management—from tracking complex donor restrictions to ensuring your functional expense ratios protect your public trust and funding viability.
Why Nonprofits Partner with Impact Numeric
I design and oversee robust, sustainable systems that transform messy data into strategic tools for your leadership and Board. My goal is to seamlessly manage:
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Audit & Tax Readiness: I deliver fully reconciled, CPA-ready year-end books to streamline your annual audits.
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Fund Accounting Precision: I establish clean ledger systems to accurately monitor and isolate donor-restricted funds.
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Board-Ready Insights: I translate complex accounting entries into clear, non-technical financial narratives that empower your leadership and board of directors to make critical decisions with confidence.
Right-Sized Support for Your Organization
Every nonprofit has different internal capacities. With my role-based, à la carte tiered structure, you engage only the level of support your organization needs today—whether it is a reliable Bookkeeper, a fund-tracking Accountant, a strategic Controller, or an expert fiscal Advisor.