Fractional CFO & Controller Services in Castell
Outsourced controllers & CFOs to manage close, variance, and board reporting — CPA-reviewed, AI-assisted, and scalable.
Castell enterprises (finance, healthcare, SaaS) require board-ready reporting.
Client Reviews
We support business owners across the country with reliable, remote bookkeeping. Here’s what a few of them say:
Controller oversight cut AP errors in half.
- Lindsay T, Accounting Manager
Variance narratives are finally CFO-quality.
- James B, Head of FP&A
Our board packs are now ready within 5 days post-close.
- Olivia R, VP Finance
Frequently Asked Questions
Are your outputs CPA-reviewed?
Yes, for GAAP compliance and audit readiness.
What industries do you serve?
SaaS, ecommerce, construction, healthcare, manufacturing, professional services.
What’s your pricing model?
Flat monthly retainer, based on controller/CFO scope.
What is your onboarding process?
Discover → Document → Dry Run → Deliver (4D framework).
How does AI assist controllers and CFOs?
By detecting anomalies, auto-writing variance notes, and fetching policies/contracts.
What does an outsourced controller do?
Oversees reconciliations, month-end close, compliance, and ensures accuracy in financials.
What is a fractional CFO?
A CFO who works part-time/outsourced, providing strategic financial leadership without full-time cost.
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