What Does a Fractional CFO Actually Do?
A fractional CFO is a senior financial executive who works with your company on a part-time or project basis — typically 10 to 40 hours per month. They bring the same strategic financial leadership you'd expect from a full-time CFO but without the $300K+ salary, equity package, and full-time headcount commitment.
Core responsibilities of a fractional CFO include:
- Financial modeling and scenario planning — building and maintaining the financial models your board and investors rely on
- Cash runway management — monitoring burn rate, forecasting runway, and flagging inflection points before they become crises
- Fundraising support — preparing investor materials, running financial due diligence, and advising on deal structure
- Board and investor reporting — preparing monthly and quarterly financial packages, board decks, and management commentary
- Banking and lender relationships — establishing credit facilities, managing banking relationships, and navigating debt financing
- Finance team leadership — managing controllers, accountants, and FP&A staff; recruiting finance talent as needed
- Strategic decision support — pricing strategy, unit economics analysis, make-vs-buy decisions, and M&A evaluation
What they typically don't do: day-to-day bookkeeping, payroll processing, accounts payable, or tax preparation. Those functions belong to your accounting staff or outsourced accounting firm. A fractional CFO sits above that layer — translating financial data into strategic decisions.
Why Chicago Companies Specifically Benefit from Fractional CFOs
Chicago's business landscape spans multiple distinct industries, each with its own financial complexity. The fractional CFO model fits particularly well here because the talent pool is deep and the cost differential versus a full-time hire is significant.
Manufacturing and Industrial
Chicago's industrial base — from food manufacturing on the Southwest Side to precision manufacturing in the suburbs — generates companies that carry inventory, manage working capital cycles, and need expertise in cost accounting and supply chain finance. A fractional CFO with manufacturing experience can dramatically improve gross margin visibility and inventory financing strategy.
Healthtech and Medtech
The Chicago healthtech ecosystem is substantial, anchored by institutions like Northwestern Medicine and Rush. Companies navigating reimbursement complexity, FDA timelines, and hospital system sales cycles benefit enormously from fractional CFOs who understand healthcare revenue models and can build investor narratives around non-traditional metrics.
B2B SaaS
Chicago punches above its weight in B2B software — from established players in the West Loop to Series A companies coming out of 1871. SaaS CFO skills are specialized: ARR, NRR, CAC payback, and SaaS-specific board reporting require someone who has been in the room before. A fractional CFO with SaaS experience brings those frameworks immediately.
Family-Owned Businesses
Many Chicago family businesses — particularly in distribution, real estate, and professional services — have grown past the point where a part-time bookkeeper is sufficient but aren't ready for a full-time CFO. Fractional CFOs help these companies professionalize their financial reporting, prepare for succession, or evaluate outside investment for the first time.
What to Look for in a Chicago Fractional CFO
Not all fractional CFOs are the same. Here are the six dimensions that matter most when evaluating candidates.
1. Relevant Vertical Experience
A SaaS CFO and a manufacturing CFO operate in fundamentally different frameworks. SaaS metrics (ARR, churn, LTV) have little overlap with manufacturing KPIs (COGS, inventory turns, margin by SKU). When you evaluate candidates, ask for specific examples from your industry — not just adjacent industries.
2. Stage Alignment
A CFO who spent their career at Fortune 500 companies may not be equipped to build financial infrastructure from scratch at a 20-person startup. Conversely, a CFO who has only worked at early-stage companies may struggle with the complexity of a $50M revenue business. Match their experience to your stage.
3. Availability and Time Zone
Chicago operates on Central Time. If your fractional CFO is on the coasts and unavailable for your Monday morning leadership calls, the relationship degrades quickly. Confirm their availability overlaps with your working hours and that they can attend key recurring meetings in person or on video without friction.
4. Systems Familiarity
Ask what financial systems they've used: QuickBooks, Xero, NetSuite, Sage Intacct, Carta, Rippling. If you're on NetSuite and they've only worked with QuickBooks, there's a learning curve. Systems fluency accelerates time-to-value significantly.
5. Communication Style
Your fractional CFO will interact with your board, investors, and leadership team. They need to translate complex financial information into clear narratives — not just build models. Ask them to walk you through a board financial package they've prepared. How they communicate in that presentation is how they'll communicate in your board meetings.
6. Engagement Clarity
The best fractional CFOs define clear scopes of work upfront — what deliverables you'll receive, what the monthly hours commitment looks like, how scope changes are handled, and what happens if you need to scale up or down. Vague engagement structures lead to misaligned expectations.
Finding Fractional CFOs in Chicago
There are four main paths to finding qualified fractional CFO candidates in Chicago:
Option 1: Fractional Executive Platforms
Platforms like HireFractional.ai pre-vet fractional executives and match them to companies based on industry, stage, and specific needs. This is typically the fastest path — you can browse vetted fractional CFOs or take an assessment to get matched. The vetting process filters out candidates who have rebranded from consulting or bookkeeping into "fractional CFO" without the strategic experience the title implies.
Option 2: CFO Networks and Associations
The Chicago CFO Alliance, Financial Executives International (FEI) Chicago chapter, and the Illinois CPA Society all maintain networks of senior finance professionals. These networks tend to surface executives who have transitioned from full-time CFO roles to fractional work — often bringing deep vertical experience from Chicago's major industries.
Option 3: Your Existing Network
If you're VC-backed, ask your investors — they've seen hundreds of portfolio companies work with fractional CFOs and often have strong referrals. YC alumni networks and Chicago startup Slack groups (like Chicago Founders and Chicago Tech) are also productive sources. Warm referrals tend to shortcut the vetting process significantly.
Option 4: LinkedIn Search
A targeted search for "fractional CFO Chicago" filtered to your industry will surface candidates. The limitation here is that LinkedIn doesn't filter for quality — you'll see a wide range from genuinely senior operators to people who recently pivoted from bookkeeping. Plan to do substantial vetting if you go this route.
Fractional CFO Costs in Chicago (2026)
Pricing for fractional CFOs in Chicago is competitive with other major metro areas. Here's the full pricing landscape:
| Engagement Model | Cost Range | Best For |
|---|---|---|
| Hourly | $200–$300/hr | Project-based or early-stage diligence |
| Monthly retainer (10 hrs) | $2,000–$3,500/mo | Ongoing oversight, light involvement |
| Monthly retainer (20 hrs) | $4,000–$7,000/mo | Active finance leadership |
| Monthly retainer (40 hrs) | $8,000–$15,000/mo | Near full-time fractional engagement |
| Embedded (3+ days/week) | $15,000–$22,000/mo | Pre-IPO, active fundraise, M&A |
On equity: Fractional CFOs rarely take equity in client companies. If a candidate asks for more than 0.25% equity as part of a standard engagement, treat it as a red flag — it suggests they're trying to recoup compensation through equity rather than demonstrating confidence in their hourly value.
Some fractional CFOs also offer project-based pricing for defined deliverables — a three-statement model build, a fundraise data room, or an audit-ready financial package. These typically range from $5,000 to $20,000 as flat-fee engagements and can be a cost-effective way to test a working relationship before committing to a retainer.
Evaluating Your Candidates
A two-round interview process is sufficient for most fractional CFO hires. Here's a framework that surfaces fit quickly:
Round 1 (30 minutes): Background and Fit
- "Walk me through a company you worked with at our stage and what you built for them financially." — This tells you immediately whether they have relevant stage experience.
- "What financial metrics do you think are most important for a company like ours?" — Tests industry knowledge and whether they ask the right clarifying questions.
- "How do you structure your engagements — what do we actually get each month?" — Reveals how organized and process-oriented they are.
Round 2 (60 minutes): Working Session
- Share your current P&L or a simplified version and ask them to identify three questions they'd want answered before the next board meeting.
- "What would your first 30 days look like with us?" — A strong candidate should have a clear diagnostic framework.
- "Describe a time you delivered bad financial news to a CEO or board. How did you approach it?" — Tests communication under pressure.
Reference Check (Non-Negotiable)
Call at least two references — ideally CEOs they've worked with, not just colleagues. Ask specifically: "Did they deliver what they said they would? Would you hire them again? What were their limitations?" The last question is the most revealing.
The First 90 Days
Once you've hired your fractional CFO, the first 90 days set the foundation for the entire engagement.
Month 1: Diagnosis
- Audit current financial systems, processes, and data quality
- Review historical financials and identify gaps, inconsistencies, or risks
- Meet key stakeholders: CEO, co-founders, controller, investors
- Establish reporting cadence and recurring deliverables
- Identify the top three financial risks facing the business
Month 2: Foundation
- Build or rebuild the core financial model
- Establish monthly close process and board reporting package
- Implement cash flow forecasting and runway tracking
- Address any urgent issues surfaced in Month 1
- Set up metrics dashboard with the KPIs that matter for your stage
Month 3: Forward-Looking
- Deliver first full board financial package
- Present annual plan or updated forecast
- Begin work on any strategic priorities (fundraise prep, M&A diligence, cost restructuring)
- Assess whether the engagement scope needs to expand or adjust
- Evaluate whether additional finance hires are warranted
A fractional CFO is one of the highest-ROI hires you can make at the growth stage. Done right, they pay for themselves in fundraise outcomes, cash efficiency, or M&A positioning alone. Chicago's ecosystem is well-served by experienced fractional CFO talent — you just need to know where to find them and how to evaluate them.
Find a Fractional CFO in Chicago
A fractional CFO is one of the highest-ROI hires you can make at the growth stage. Done right, they pay for themselves in fundraise outcomes, cash efficiency, or M&A positioning alone.
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