Fractional COO
Provides senior operational leadership for nonprofits facing growth, transition, or complexity. This service strengthens systems, teams, workflows, and executive decision-making without the cost of a full-time chief operating officer.
One Abacus Advisory helps nonprofits strengthen operations, leadership, and internal systems with flexible senior-level support. From organizational management and HR systems to board collaboration and transition planning, we help mission-driven teams improve accountability, streamline workflows, and build the infrastructure needed for sustainable growth.

Strategic operational and leadership support designed to help nonprofits run efficiently, scale responsibly, and strengthen internal accountability.
Provides senior operational leadership for nonprofits facing growth, transition, or complexity. This service strengthens systems, teams, workflows, and executive decision-making without the cost of a full-time chief operating officer.
Builds effective operating rhythms, clearer departmental workflows, and stronger management practices. The result is better accountability, improved coordination, and scalable infrastructure that supports consistent mission delivery.
Guides nonprofits through HRIS selection, configuration, and rollout to improve people operations. This service helps centralize HR data, streamline workflows, and support compliant, efficient team management.
Partners with executive directors and boards to improve governance, planning, and reporting. Complex operational and financial information is translated into practical insights leaders can use with confidence.
Steps in during leadership changes, staffing gaps, or organizational disruption to maintain continuity. This support stabilizes operations, preserves momentum, and helps nonprofits stay on track during critical periods.
Supports payroll system setup and optimization with process design, configuration, and training. Nonprofits gain more accurate, compliant payroll operations that integrate better with HR and accounting functions.
Nonprofit organizational management services give mission-driven teams the structure, leadership, and systems they need to operate with greater clarity. One Abacus Advisory helps organizations improve workflows, strengthen accountability, support boards and executives, and modernize internal processes. Whether you are navigating growth, transition, or operational strain, the focus stays on practical improvements that support long-term stability and mission impact.

Supporting nonprofits through growth, transitions, and complex operational challenges with experienced, right-sized leadership.
Nonprofits rely on us for experienced guidance that strengthens operations without adding unnecessary overhead.
Specialized support built around nonprofit governance, compliance, funding realities, and mission-driven operations.
Over 25 years of finance and organizational leadership experience applied to practical nonprofit management challenges.
Fractional leadership gives organizations senior expertise without the fixed cost of full-time executives.
Clear, actionable reporting helps executives and boards make stronger decisions with confidence.
Experienced advisors focused on nonprofit performance and stability.

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.
Nonprofit organizational management services help strengthen the internal structure that supports mission delivery. This can include operational leadership, workflow design, board support, HR systems, reporting processes, and transition planning. The goal is to improve accountability, efficiency, and decision-making so leadership teams can focus less on operational friction and more on program outcomes and long-term sustainability.
Talk with our team about your nonprofit’s operational needs.
Deep senior finance and advisory background.
Focused expertise for mission-driven organizations.
Flexible executive support without full-time overhead.
Share your organization’s goals and challenges, and we’ll help you explore the right level of operational 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.