Weeks 1-2: the close cycle
The first weeks of each month are about the prior month's close. The fractional CFO reviews the controller's or bookkeeper's output, asks questions about anomalies, confirms accruals are reasonable, and validates that the financials are ready for publication.
This is not transaction-level work. The CFO is not reconciling bank accounts or categorizing line items. They are reviewing the output: does the P&L make sense given what happened operationally, do the numbers tie to what management expected, are there any red flags that need investigation.
After close, the CFO prepares the monthly financial commentary - the narrative layer that explains what the numbers mean. This typically runs 1-2 pages and addresses variance to plan, material changes, cash position, and forward outlook.
Mid-month: leadership and board work
Monthly leadership meeting: the CFO participates, presents financial results, and answers questions. This is often 60-90 minutes and involves real-time analysis of what the numbers mean for operational decisions.
Board reporting prep for any scheduled board meetings. This is a larger lift quarterly than monthly, but even non-board months often involve preparing monthly updates for investors. The CFO writes these documents.
Ad-hoc financial analysis that comes up. Should we hire two more AEs or one more plus a marketer? What happens to cash if we extend payment terms? How does the new pricing affect unit economics? These are the strategic questions the CFO handles on rolling basis.
Later month: forward-looking work
Forecast updates. The forward model gets refreshed as actuals come in. Hiring plans get updated. Cash flow projections get extended. This is the work that keeps the forward view current and useful.
Strategic projects that rotate each month. Pricing analysis one month, vendor negotiation the next, sales compensation review the month after. The specific work varies but the rhythm of rotating strategic projects is consistent.
Vendor and partner relationships. The CFO often manages relationships with accountants, bankers, insurance providers, and other financial counterparties. These need regular attention and some monthly interaction typically happens.
The total time investment
A typical steady-state fractional CFO engagement runs 15-25 hours per month. Some months are lighter (quiet quarters, no board meeting), some are heavier (close weeks, board meetings, special projects). The retainer absorbs the variance.
During active fundraising, hours spike to 30-50 per month. The work shifts from steady-state finance to intensive fundraising support. Model refinement, investor materials, diligence response. This is known to happen and priced accordingly.
The outputs to watch for: timely monthly financials with useful commentary, a maintained forward model, clear board-level communications, and responsive ad-hoc analysis. If these are happening consistently, the engagement is working. If they are not, the engagement needs adjustment.