One Abacus Advisory

Smarter Financial Leadership for Stronger Decisions

In today’s nonprofit environment, effective financial leadership is a strategic advantage. Clear insight, strong controls, and forward‑looking guidance enable organizations to make smarter decisions, steward resources responsibly, and stay focused on mission impact. Yet many nonprofits need senior‑level financial expertise without the cost or commitment of a full‑time hire.

One Abacus Advisory partners with nonprofits to deliver flexible, right‑sized financial leadership tailored to each organization’s needs. After gaining a deep understanding of your goals, challenges, and capacity, we design a fractional solution that provides the strategic insight, operational support, and hands‑on guidance needed to move your organization forward—efficiently and cost‑effectively.

One Abacus offers flexible financial leadership tailored to your needs, equipping leaders and boards with the clarity and confidence to advance their mission.

The One Abacus Advisory Difference

· Nonprofit-focused expertise

· Strategic—not just technical—guidance

· Flexible, right-sized support

· Clear, actionable insights for boards and leaders

Years of Experience

0 +

Nonprofit Clients Served

10 +

Nonprofit Industry Sectors

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Lorin Port – Founder, Consulting CFO

At the heart of Lorin’s professional journey is a passion for empowering nonprofit organizations through strategic financial guidance and managerial finance expertise. Drawing on deep experience advising mission‑driven organizations, her approach is grounded in understanding each nonprofit’s unique goals and aligning financial strategy to support sustainable impact.

Services We Offer

Fractional CFO & COO

One Abacus Advisory provides nonprofits with experienced, executive level CFO and COO leadership - without the cost or commitment of a full time hire. We partner….

Fractional CFO & COO

One Abacus Advisory provides nonprofits with experienced, executive level CFO and COO leadership - without the cost or commitment of a full time hire. We partner with Executive Directors and Boards to strengthen financial foundations, stabilize operations, and build scalable infrastructure so your organization can advance its mission with clarity and confidence.

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Senior Finance Team

At One Abacus Advisory, our Fractional Senior Finance Director and Controller services provide nonprofits with experienced, hands on financial leadership without the cost …

Senior Finance Team

At One Abacus Advisory, our Fractional Senior Finance Director and Controller services provide nonprofits with experienced, hands on financial leadership without the cost of a full time hire. This role focuses on translating financial strategy into consistent execution—strengthening systems, improving reporting, and ensuring financial operations are reliable, compliant, and well managed. Unlike Fractional CFO services, which emphasize executive level strategy and board partnership, this role centers on day to day financial leadership and operational excellence.

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Accounting Optimization

Our Accounting Services provide reliable, day to day financial support while strengthening the systems and processes that keep your organization…

Accounting Optimization

Our Accounting Services provide reliable, day to day financial support while strengthening the systems and processes that keep your organization running smoothly. In addition to managing core accounting functions, we assess and optimize accounting systems to improve efficiency, accuracy, and internal controls. These services are designed to ensure leadership and boards have clear, timely, and compliant financial information to support effective oversight and decision making.

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Grant Writing & HR

At One Abacus Advisory, we recognize that strong financial strategy extends beyond accounting and reporting. Organizational sustainability is shaped by the systems…

Grant Writing & HR

At One Abacus Advisory, we recognize that strong financial strategy extends beyond accounting and reporting. Organizational sustainability is shaped by the systems that support your people and the funding strategies that sustain your programs. Our additional advisory services are designed to complement our financial offerings, helping nonprofits strengthen internal capacity, improve funding readiness, and ensure operational decisions align with long term financial goals.

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How It Works

Fractional accounting can offer several benefits to nonprofit organizations, helping them manage their finances more effectively and efficiently. Here’s how fractional accounting can help nonprofits:

Cost-Effective Expertise

Nonprofits often operate on tight budgets, making it difficult to afford full-time accounting staff or a dedicated CFO...

Fractional accounting allows nonprofits to access professional accounting expertise on a part-time or as-needed basis, reducing costs while still benefiting from high-quality financial services.

Flexible Support

Fractional accounting arrangements offer flexibility in terms of engagement, duration and scope of work...

Nonprofits can tailor the level of support to their specific needs, whether it's basic bookkeeping, financial reporting, budgeting, grant management, or strategic financial planning.

Efficiency and Accuracy

Professional accountants can streamline accounting processes, ensuring that financial transactions are accurately recorded...

categorized, and reported in a timely manner. This can improve the overall efficiency of financial operations and reduce the risk of errors or discrepancies.

Compliance and Transparency

Nonprofits are subject to various regulatory requirements and reporting standards, including tax filings, audits, and grant reporting...

Fractional accountants can help ensure compliance with these requirements, maintaining the organization's legal and financial integrity while providing transparency to donors, funders, and other stakeholders.

Financial Analysis and Insights

Fractional accountants can analyze financial data to provide valuable insights into the organization's...

financial health, performance, and trends. This information can help nonprofit leaders make informed decisions, allocate resources effectively, and identify opportunities for improvement or growth.

Risk Management

Professional accountants can help nonprofits identify and mitigate financial risks, such as fraud, cash flow shortages...

or budget overruns. By implementing appropriate controls and monitoring mechanisms, fractional accountants can safeguard the organization's assets and ensure fiscal responsibility.

Capacity Building

Fractional accountants can also support capacity building within the organization by training staff members on accounting...

best practices, financial management tools, and reporting standards. This empowers nonprofit staff to take on more responsibilities in financial management and strengthens the organization's internal controls.