Fractional CFO
Access senior financial leadership for budgeting, forecasting, cash flow management, board reporting, and strategic planning without the long-term cost of a full-time CFO.
One Abacus Advisory delivers executive-level nonprofit financial leadership without the cost of a full-time hire. From budgeting and board reporting to audit readiness and cash flow planning, we help Appleton organizations build stronger financial systems, support sustainable growth, and make confident decisions in Wisconsin's evolving funding and compliance environment.

Strategic financial leadership, reporting, compliance, and planning support tailored to nonprofit organizations.
Access senior financial leadership for budgeting, forecasting, cash flow management, board reporting, and strategic planning without the long-term cost of a full-time CFO.
Strengthen financial visibility with executive oversight of reporting, budgeting, compliance, and internal controls that support sound governance and mission-aligned decisions.
Develop practical budgets and cash forecasting tools that help nonprofit leaders anticipate needs, allocate resources wisely, and maintain operational stability year-round.
Equip executive directors and boards with clear, board-ready financial analysis that improves governance, planning, and confidence in major organizational decisions.
Maintain continuity during leadership changes with experienced financial guidance that keeps reporting, month-end processes, and audit preparation moving forward.
Reduce risk through stronger internal controls, audit readiness, and regulatory compliance practices designed for the demands of nonprofit funding and oversight.
Our nonprofit CFO services give organizations the strategic financial leadership needed to plan confidently, report clearly, and operate with stronger control. One Abacus Advisory helps Appleton nonprofits improve budgeting, cash visibility, board communication, and compliance readiness, all with flexible support that fits local organizations balancing mission impact, grant requirements, and responsible stewardship across Wisconsin's nonprofit landscape.

See how nonprofit leaders gain clarity, stability, and stronger financial decision-making with expert advisory support.
Nonprofits rely on us for flexible, experienced financial leadership tailored to real operational needs.
Dedicated nonprofit expertise supports stronger stewardship, reporting accuracy, and mission-aligned financial decisions.
Appleton organizations get right-sized CFO guidance without committing to a full-time executive salary.
Clear, actionable reporting helps leaders and boards make confident decisions and strengthen governance.
Support through audits, growth, and leadership changes helps Wisconsin nonprofits maintain continuity and control.
Experienced nonprofit financial leadership you can trust.

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 fractional nonprofit CFO provides executive-level financial leadership on a part-time or flexible basis. Services typically include budgeting, forecasting, cash flow oversight, board reporting, audit preparation, internal controls, and strategic financial planning. This model gives nonprofits access to senior expertise without the salary and benefits commitment of a full-time CFO, making it especially valuable during growth, transition, or funding complexity.
Talk with our team about your nonprofit's financial needs.
Seasoned finance leadership for nonprofits.
Specialized advisory for mission-driven organizations.
Flexible executive support without overhead.
Share your organization's goals, challenges, and timeline, and we'll outline the right level of financial leadership 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.