Back Office Accounting
Day-to-day nonprofit accounting support that improves accuracy, reporting, budgeting, cash flow monitoring, and internal systems for smoother financial operations.
Get nonprofit accounting support built for stronger reporting, cleaner processes, and confident leadership decisions. One Abacus Advisory helps Chicago organizations improve financial clarity, grant compliance, and board-ready reporting with flexible, senior-level guidance. Whether you're managing restricted funds, preparing for an audit, or strengthening internal controls, our services are tailored to mission-driven teams across Chicago, Illinois.

Flexible accounting, reporting, and financial leadership services tailored to nonprofit organizations and 501(c)(3) teams.
Day-to-day nonprofit accounting support that improves accuracy, reporting, budgeting, cash flow monitoring, and internal systems for smoother financial operations.
Executive-level financial oversight for budgeting, forecasting, compliance, board reporting, and strategic planning without the cost of a full-time CFO.
Controller-level support focused on financial statements, accounting policies, team oversight, compliance, and stronger internal financial management.
Comprehensive reviews of people, processes, and systems to identify reporting gaps, control issues, automation opportunities, and compliance risks.
Payroll and finance support for 501(c)(3) organizations, including implementation, reporting alignment, and workflow improvements for better accuracy.
Support for NetSuite and related accounting platforms through workflow improvements, reporting enhancements, training, and system optimization.
Nonprofit accounting is more than bookkeeping—it supports compliance, board confidence, and better decisions. One Abacus Advisory helps Chicago, Illinois organizations strengthen reporting, budgeting, cash flow visibility, and internal controls with right-sized support. From grant-funded programs to audit preparation and system improvements, our services are designed to reduce administrative strain while giving leadership clearer financial insight.

See how mission-driven organizations benefit from clearer reporting, stronger controls, and flexible financial leadership.
Organizations rely on us for practical nonprofit financial leadership and dependable operational support.
Deep nonprofit expertise supports Chicago organizations with reporting, compliance, and mission-aligned financial leadership.
Access CFO- and controller-level insight without the cost and commitment of full-time executive hires.
Board-ready reporting helps leaders present performance, risks, and priorities with greater clarity and confidence.
Right-sized services adapt to Chicago nonprofits navigating growth, audits, grants, and operational transitions.
Experienced advisors supporting nonprofit financial leadership.

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 aligned with their unique mission and operational needs.
Nonprofit accounting services typically include day-to-day bookkeeping support, financial statement preparation, budgeting, forecasting, cash flow monitoring, payroll coordination, grant tracking, board reporting, and internal control improvements. For many organizations, it also includes higher-level guidance such as fractional CFO or controller support to strengthen compliance, improve reporting accuracy, and help leadership make informed financial decisions.
Talk with our team about your nonprofit’s accounting needs.
Extensive finance and accounting leadership.
Focused expertise for mission-driven organizations.
Senior guidance without full-time overhead.
Share your organization’s goals, reporting challenges, or system needs, and we’ll help you explore the right level of support.
For immediate assistance, feel free to give us a direct call at 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 760-845-3808. You can also send us a quick email at lorin@oneabacusadvisory.com.