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The New F*Word (F for Fractional Finance)

Why Mairianne Stewart Left Big Business to Go Fractional

The New F*Word (F for Fractional Finance) · 2025-12-04 · 32 min

Episode notes

In this episode of The New F*Word, host Colin Hewitt is joined by Mairianne Stewart, Fractional CFO at Plug-In Finance, to discuss her leap from big business to entrepreneurship, what she’s learned helping founders manage cash and growth, and why startups should never wait until it’s too late to bring in a fractional CFO. What You’ll Learn: * Why cash blindness is killing your startup faster than a bad product * How to avoid the two-to-three-month onboarding tax when bringing in fractional finance support * The hidden skill that fractional CFOs actually need that has nothing to do with accounting * How to structure a fractional CFO practice so you’re not the bottleneck * Why the corporate world and startup world are polar opposites Mairianne Stewart is a fractional CFO with over 20 years of experience in FTSE-100 companies and four years providing strategic CFO services to ambitious SMEs. She helps growing businesses navigate complex financial, operational, and regulatory challenges without the need for a full-time CFO.

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