Founded on one idea: every business deserves a high-caliber CFO.
Guastella Advisors, PLLC was founded on a single conviction — that every business, regardless of size or industry, deserves the same caliber of financial guidance as a Fortune 500. We bring CFO-level strategy, clarity, and a roadmap to scalability to the small businesses that drive the real economy, so owners can focus on what they do best.
Jonathon A. Guastella
Jonathon founded Guastella Advisors on the belief that every business — regardless of size — deserves a high-caliber CFO. Large enterprises have always had access to that level of financial leadership; most small businesses have not. GA exists to close that gap.
He pairs the technical foundation of a CPA with the strategic lens of an MBA, and works directly with every client engagement as their financial copilot — not a hand-off to a junior team.
The result: owners get the structure, visibility, and strategy that transforms day-to-day operations into scalable, lasting growth.
Strategic finance is a leadership function, not a clerical one.
The traditional small-business finance experience defaults to compliance: close the books, file the return, hand over the statements. Useful — but not the same as financial leadership.
GA is built differently. An advisory-first firm where the central product is decision support: the analysis, modeling, lender posture, and operating cadence that lets an owner make higher-quality choices, faster.
We are intentionally not offering attest services (audits, reviews, or compilations) in our first phase. That focus lets us invest fully in the discipline behind every advisory engagement, while we architect the firm to expand into a broader CPA platform over time.
Owner-aligned
We sit on the same side of the table as the owner — translating numbers into the decisions that shape cash, margin, and growth.
CFO-caliber discipline
Forecasts that hold up under scrutiny. Reporting that earns trust from lenders, boards, and future acquirers.
Built to scale with you
From first 13-week cash forecast to capital strategy and exit readiness — the firm grows as the questions get sharper.
A premier advisory platform — built deliberately, in the right order.
Today GA focuses on fractional CFO services, financial strategy, lender management, and scalability consulting. Tomorrow, we'll extend that foundation into a broader CPA offering — built on the same standard of discipline and owner-mindedness that defines the firm today.
Let's talk about where your business is headed.
A focused conversation with Jonathon. No pitch, no obligation.