Fractional CFO
Executive-level financial leadership for nonprofits needing budgeting, forecasting, board reporting, audit preparation, and strategic guidance without the cost of a full-time CFO.
One Abacus Advisory helps nonprofits in Washington DC strengthen financial oversight, reporting, and compliance with flexible senior-level support. From board-ready reporting to grant and cash flow management, we deliver practical guidance that fits the pace of mission-driven organizations navigating complex funding, audits, and public-sector expectations in the District.

Flexible financial leadership, accounting support, and compliance-focused solutions tailored to nonprofit organizations.
Executive-level financial leadership for nonprofits needing budgeting, forecasting, board reporting, audit preparation, and strategic guidance without the cost of a full-time CFO.
Reliable day-to-day accounting support that improves reporting accuracy, strengthens internal processes, and gives nonprofit leaders timely financial information for better decisions.
Comprehensive oversight of budgeting, cash flow, forecasting, and financial statements to support governance, compliance, and mission-aligned planning.
Practical budgeting frameworks and cash forecasting tools designed around nonprofit funding cycles to improve visibility, planning, and financial stability.
Management of grant portfolios and government contracting requirements with accurate drawdowns, reporting, and controls that reduce compliance risk.
Hands-on senior finance leadership that bridges accounting operations and executive strategy, improving controls, execution, and reporting consistency.
Our nonprofit financial services give Washington DC organizations the senior guidance needed to manage budgets, reporting, compliance, and board communication with confidence. Whether you're preparing for an audit, managing restricted funding, or navigating the District's fast-moving nonprofit environment, One Abacus Advisory provides right-sized support that strengthens systems, improves visibility, and helps leadership make sound mission-focused decisions.

See how nonprofits benefit from stronger reporting, compliance, and financial leadership.
Nonprofits rely on us for practical financial leadership that supports stronger decisions and steadier operations.
Dedicated nonprofit expertise supports funding restrictions, board reporting, and mission-driven financial decision-making.
Get senior financial leadership in Washington DC without committing to a full-time executive hire.
We help organizations manage audits, controls, and grant requirements common in the DC nonprofit landscape.
Leadership and boards receive timely, actionable reporting that improves oversight and planning.
Experienced advisors supporting nonprofit leaders with clarity.

Founder, Consulting CFO
Lorin Port is the Founder and Consulting CFO of One Abacus Advisory, bringing over 25 years of finance and accounting experience to the nonprofit sector. With a dedicated focus on nonprofit financial leadership for the past nine years, Lorin specializes in fractional CFO and COO services, nonprofit accounting, and NetSuite optimization. He has partnered with prominent organizations such as the San Diego Food Bank, Philadelphia Zoo, and Laguna Playhouse, delivering strategic financial guidance during periods of growth, transition, and complexity. Lorin is committed to empowering nonprofit leaders and boards with clear, actionable insights that drive stronger decisions and long-term organizational health. His flexible, right-sized approach ensures each client receives tailored support that aligns with their unique mission and operational needs.
A nonprofit financial services firm helps organizations manage budgeting, forecasting, accounting oversight, board reporting, internal controls, and compliance. It can also provide fractional executive support such as CFO or senior finance leadership. The goal is to improve financial clarity, strengthen systems, and help nonprofit leaders make informed decisions without hiring a full in-house executive team.
Talk with our team about your nonprofit's needs.
Deep finance leadership across nonprofit operations.
Focused support for mission-driven organizations.
Senior guidance without full-time overhead.
Share your organization's goals, challenges, or reporting needs, and we'll outline practical next steps for the right level of support.
For immediate assistance, feel free to give us a direct call at +1 760-845-3808. You can also send us a quick email at lorin@oneabacusadvisory.com.
For immediate assistance, feel free to give us a direct call at +1 760-845-3808. You can also send us a quick email at lorin@oneabacusadvisory.com.