“What would a fractional chief of staff cost me?” is usually the second question a founder asks, right after “can I get part of this role without hiring full-time?” The honest answer has a real number attached, and a real range around it — this guide gives both, sourced, plus the pricing models behind the number and how it compares to the other rungs on the ladder.
What a fractional chief of staff costs
In the US, fractional chief of staff retainers run roughly $7,000–14,000 a month for part of the week, averaging about $177 an hour — close to $8,500 a month at a 12-hour week (Go Fractional, 2026 benchmarks). In the UK, the same role runs closer to £3,000–8,000 a month, per the same source.
That places a fractional chief of staff between two other rungs most founders already know: a managed executive-assistant service such as Athena, at $3,000 a month after a 90-day commitment, and a full-time US chief of staff, whose salary is widely cited in the six figures — commonly $150,000 a year or more before benefits and equity. The fractional model exists specifically to sit in that gap: senior judgment, without the full-time commitment or price.
How the pricing works
Fractional chief of staff arrangements are priced one of two ways, and it’s worth knowing which one you’re being quoted before comparing numbers.
Retainer. A fixed monthly fee for a fixed number of days or hours a week — typically one to two days. This is the more common structure at the senior end of the market and the one the $7,000–14,000/mo range above describes. It buys predictability: the same person, the same days, every week.
Hourly. Billed against actual hours worked, with no floor on commitment. This suits founders who need occasional senior judgment — a fundraising push, a reorg, a specific initiative — rather than a standing weekly cadence. At the reported average of $177/hour, a light 10-hour month runs under $2,000; a heavy 40-hour month approaches the low end of the retainer band.
Below the chief of staff tier, the same two models apply to fractional executive-assistant services, at meaningfully lower prices — Double prices its fractional EA hours at $549 for 10 hours a month up to $5,099 for 100 hours. That’s useful context even if you’re shopping for a chief of staff: it shows how much of the price gap is the seniority and scope of the role, not the fractional model itself.
PILOT is a private AI chief of staff — a living model of your mail, calendar, and meetings that briefs you every morning and tracks every commitment. It doesn't replace a fractional hire's judgment; it covers the days they aren't in the room.
Request accessFractional chief of staff vs. the alternatives
Every option below is a market rate, not a PILOT price — PILOT has no published pricing tier; it is sold by request-access.
| Option | Typical cost | What you get |
|---|---|---|
| Fractional EA (e.g. Double) | $549–5,099/mo, by hours | Task execution, scheduling, inbox handling |
| Managed EA service (Athena) | $3,000/mo | A dedicated human EA, coordinated remotely |
| Fractional chief of staff (US) | $7,000–14,000/mo | Senior judgment, 1–2 days a week |
| Fractional chief of staff (UK) | £3,000–8,000/mo | Same role, UK market rate |
| Full-time chief of staff (US) | $150K+/yr | Full week, one person, deep context |
| PILOT | Request access | The information layer — briefing, tracking, follow-through — always on |
Sources: Go Fractional, chief of staff rates (2026); Athena pricing; Double pricing. Rates change — verify current pricing before committing to a contract.
The jump from a fractional EA to a fractional chief of staff is roughly the same multiple as the jump from that chief of staff to a full-time one: each step up buys more judgment and more time, at a price that scales with both.
Get the Chief of Staff Kit — the brief, review and delegation system PILOT runs, as a free PDF. Runnable by hand.
What moves the price
Within the $7,000–14,000 range, a few factors reliably push the number up or down:
- Hours committed. One day a week prices differently from two — the hourly average holds roughly steady, so the monthly total scales with time.
- Stage and complexity. A fractional chief of staff for a Series A company managing a first leadership hire costs more than one supporting a five-person team, because the judgment required scales with the organization.
- Scope of the mandate. Pure information management — briefings, tracking, meeting prep — prices at the low end of the band. Political work — representing the founder to the board, running a leadership offsite, negotiating a deal — commands the high end.
- Geography. UK and continental European rates run below US rates for comparable seniority, mirroring the broader gap in executive-support pricing between the two markets.
What a fractional arrangement does not solve
A fractional chief of staff is a person with a calendar, and calendars have gaps. The days they aren’t scheduled with you, the information keeps arriving anyway — email, meetings, follow-ups, the promise made on a call. Most of what a fractional hire spends their first hour on, each session, is reconstructing what happened since the last one.
That’s not a knock on the model — it’s the honest tradeoff of buying part of a week instead of all of it. The practical fix most founders land on is splitting the job by kind: a standing system handles the continuous information work — reading everything, tracking every commitment, briefing every morning — so the fractional hire’s limited hours go entirely to judgment, not catch-up. What a fractional chief of staff alternative looks like works through that split in more detail, and the case for when you’re not ready to hire at all covers the earlier stage, before even a fractional retainer is justified.
How to decide
A short way to place yourself on the ladder:
- The work is mostly information management — briefings, triage, follow-up tracking, meeting prep — and you don’t yet have five-plus meetings a week generating commitments faster than you can log them: a standing system is cheaper and sufficient. See what an AI chief of staff actually does for the full job description.
- The work is genuinely part-time but needs senior judgment — someone to represent you occasionally, run a specific process, or coach a leadership team through a transition: a fractional chief of staff, at the rates above, is the right shape of hire.
- The work has become full-time — daily political navigation, a leadership team that needs managing, a board relationship that needs tending continuously: the math starts favoring a full-time hire, with the fractional retainer as the bridge while you recruit.
Whichever rung you’re on, the AI-powered executive assistant category and a chief of staff are not the same purchase — worth reading before assuming a cheaper software tool covers what a fractional hire does. The honest comparison, sourced the same way as the numbers above, is the full cost breakdown of an AI chief of staff.