Controller vs. CFO: Who Should You Hire First?

This guide walks you through the different scenarios that point to when you should hire a Controller or a CFO first, depending on what your company needs to solidify the finance function.
Written by
MAVI
Published On
April 20, 2026

Most growing companies need a Controller before they need a CFO. Getting the sequence wrong is expensive in both directions, and it happens more often than finance leaders expect, usually because the CFO hire feels more strategic and therefore more urgent.

What Does a Controller vs. CFO Do?

A Controller's job is backward-looking in the best sense: accurate books, a close process that runs on schedule, reconciliations that hold up, and internal controls that exist. They build the accounting foundation that everything else depends on.

A CFO's job is forward-looking: capital strategy, fundraising, financial modeling, investor relations, and M&A. The catch is that a CFO can only do that work if the accounting underneath them is solid. Without clean financials and a reliable close, strategic finance is largely improvisation; it just doesn't look like it until the numbers are questioned.

The Sequencing Mistake

Bringing in a CFO before the accounting function is in order is one of the most predictable missteps in early-stage finance. The failure mode plays out the same way almost every time: a fractional CFO comes in to support a fundraise and, within two weeks, hits a wall. Books aren't clean. Close is weeks behind. Reconciliations haven't been touched. At that point, the CFO either absorbs Controller-level cleanup – burning expensive strategic capacity on operational work – or the company makes a second hire to fix the foundation it should have built first.

One consequence that's easy to underestimate: companies with a Controller in place before beginning a fundraise tend to complete the process significantly faster than those without one. Clean books aren't just hygiene; they're a fundraising asset that shows up in diligence.

When You Should Hire a CFO

If you're actively raising capital right now and need someone to own the investor narrative and financial model today, that's a CFO function. Same for M&A:  when you need board-level strategic support immediately, you hire for that first.

But even then, the CFO will need accounting support almost immediately. A CFO without a Controller underneath them tends to end up doing operational work they weren't hired for, on top of everything else they were.

The Fractional CFO + Controller Structure

For companies in the $2M–$15M revenue range, a fractional CFO paired with a full-time Controller is often the most practical finance structure available. The fractional CFO handles the strategic finance part-time; the Controller owns the accounting function day-to-day without the CFO having to manage it.

MAVI Controllers average 8+ years of experience and are accustomed to fractional CFO environments – they integrate directly, own the function without daily direction, and don't become a second management problem for the CFO to deal with. Several fractional CFO firms use MAVI specifically for this setup.

How to Decide between Hiring a Controller vs. CFO

Hire a Controller first if your close is slow or unreliable, if the financial data isn't trusted internally, if you have no meaningful internal controls, if an audit or fundraise is on the horizon, or if your CFO is currently doing accounting work because there's no one else.

Hire a CFO first if you're actively raising capital and need investor-facing financial leadership now, or if M&A requires board-level strategic support immediately.

Hire both if you need strategic finance capacity but don't yet have the accounting foundation for a CFO to build on, which is most companies past $5M ARR. If you’re a fast-growing company needing a leader to straighten up your accounting function or a fractional CFO that needs a manager to oversee execution, MAVI can help you find a top-tier, pre-vetted remote Controller that can work directly with you and hit the ground running. Book a call to check out available profiles.

Frequently Asked Questions

Can a Controller fill in for a CFO temporarily?

Some can offer limited strategic support, particularly those with FP&A backgrounds. But it's not what the role is built for, and leaning on it tends to produce either strategic gaps or a burned-out Controller. They complement each other; they don't substitute.

What if I can only afford one right now?

If the books are unreliable and the close is broken, hire the Controller. A CFO working from bad financials can't do their job – they're building on sand. MAVI Controllers cost 50–70% less than US-market equivalents, which often makes this less of a budget constraint than it looks.

How does a fractional CFO work with a MAVI Controller?

Generally well. MAVI Controllers are used to the structure. They integrate into existing workflows, own the accounting function without needing the CFO to manage them through it, and give the CFO room to actually focus on strategy. A few fractional CFO firms use MAVI specifically because of this.

How quickly can I bring on a Controller?

In most cases, MAVI can deliver a Controller within five days. With it, you get a 14-day risk-free trial, without having to pay any upfront fees.