A fractional CPO is a part-time, senior strategic hire who sets direction, validates the roadmap and often delivers hands-on for one to two days a week, typically costing £4,000-£10,000 a month. A VP Product is a full-time, execution-focused hire who runs a team of PMs against an existing strategy, typically costing £130,000-£170,000 base in the UK. The short version: if you don't yet have a validated strategy or a team to manage, you need a fractional CPO first.
Founders often conflate the two because both titles suggest seniority. The actual difference is about scope of ownership and time commitment, not competence.
What a fractional CPO owns
Strategic direction: what the product should be, for whom, and why now. This includes market positioning, pricing philosophy and the top-line roadmap that ties features to business outcomes. A fractional CPO typically reports to the founder or CEO directly, and part of the job is helping the founder think, not just executing their instructions.
Because they're part-time, fractional CPOs work best when the company doesn't yet have a large product team to run — usually pre-seed to early Series A, with zero to two PMs.
What a VP Product owns
Execution against an existing strategy: managing a team of PMs, running the delivery cadence across multiple product lines, owning sprint-level prioritisation, and being the full-time escalation point for product decisions. A VP Product typically reports into a CPO or directly into the CEO once the company doesn't have a CPO yet, and is expected to be in the building (or on video) every day.
This role assumes the hard strategic questions — who we serve, what our wedge is — are largely answered. A VP Product who inherits an unvalidated strategy ends up doing fractional-CPO-shaped work anyway, just without the fractional flexibility or cost.
The cost comparison
A UK VP Product costs £130,000-£170,000 base, rising to roughly £160,000-£210,000 all-in with NI, pension and recruitment fees, plus meaningful equity (often 0.3-1%). A fractional CPO at two days a week costs around £96,000-£120,000 a year with no equity and no notice period beyond the contract term.
The two aren't perfect substitutes on cost alone, though — a VP Product is full-time and can manage people; a fractional CPO structurally cannot absorb the same daily volume of decisions.
The sequencing mistake founders make
The most common error is hiring a VP Product too early, before the strategy is validated, and expecting them to both invent the direction and execute it full-time. This usually produces a VP Product who spends their first six months doing discovery work they weren't hired or particularly incentivised to do, while the team waits for a roadmap.
The cleaner sequence: fractional CPO validates the strategy and gets an MVP shipped, then either that person converts to full-time CPO or the company hires a VP Product to execute against a roadmap that's already proven itself with real users and revenue.
When you genuinely need both
Some Series A and B companies run a fractional CPO for strategic oversight (often one day a week) alongside a full-time VP Product for execution — the fractional CPO acting almost as a chair-of-the-board for product, and the VP Product running the team day to day. This works when the fractional CPO has the seniority and stage-specific pattern-matching the founder wants but doesn't want to pay for full-time, and the VP Product needs a strategic sparring partner they don't otherwise have internally.
It's a more advanced structure and usually only makes sense once headcount is significant enough to justify two product leadership seats.
How to decide
Ask three questions: do we have a validated strategy already? Do we have a team of PMs that needs daily management? Do we have the budget for a full-time senior salary plus equity? If the answer to the first two is no, start with fractional. The Crossley Method's seven stages — Discover, Validate, Prototype, Build MVP, Launch, First Revenue, Scale — map cleanly onto this decision: fractional CPO work covers Discover through Launch and often First Revenue, while a VP Product hire typically becomes the right call once you're firmly into Scale.
Frequently asked questions
- Is a fractional CPO senior to a VP Product?
- In title, roughly equivalent or slightly senior; in practice they play different roles. A fractional CPO sets part-time strategic direction, while a VP Product executes full-time against an existing strategy and manages a team.
- Can a VP Product do the job of a fractional CPO?
- A strong VP Product can do strategic work, but they're hired and incentivised for execution. Asking a full-time VP Product to also invent the company's product strategy from scratch often means paying full-time salary for work that a fractional CPO would do faster and cheaper.
- Should a seed-stage startup hire a VP Product?
- Usually not yet. Most seed-stage teams don't have a large enough PM team or validated-enough strategy to justify a full-time VP Product's cost and scope. A fractional CPO is the more common and more cost-effective fit at this stage.
- What's the salary difference between a fractional CPO and a VP Product?
- A UK VP Product costs roughly £160,000-£210,000 a year all-in with equity. A fractional CPO at two days a week costs roughly £96,000-£120,000 a year with no equity, though the roles aren't directly comparable in time commitment.