Interim executive solutions are staffing arrangements that put a proven leader into a specific seat for a defined period, without a permanent hire. The category covers four models: interim executives, fractional executives, contract professionals, and contract-to-hire. Each one differs in hours per week, duration, who employs the person, and cost. Picking the wrong model is the most common buyer mistake.
Demand has moved from emergency cover to standard practice. Requests for interim C-suite leaders have risen 151% since 2021. Interim CFOs alone make up 51% of interim leadership requests, according to Heidrick & Struggles’ 2026 High-End Independent Talent Report. Supply has grown to match. A record 5.6 million American independents now earn over $100,000 a year, up 19% from 2024, according to MBO Partners’ 2025 State of Independence report. The talent exists. The open question is which model fits your gap.
What sits under the interim executive solutions label?
Four staffing models sit under the label, and two adjacent services get confused with them. The difference is who owns the seat, for how long, and for how many hours a week.
An interim executive works four or five days a week for a defined period and owns the seat outright. An interim CFO signs off the close, presents to the board, and manages the finance team. The engagement has a start date and a planned end, most often six to twelve months. Our interim executive engagements average seven-plus months. Use one when the chair is empty. Our guides to interim CFO services, the interim CMO role, and the interim COO role cover the three seats we fill most.
A fractional executive works one to three days a week on an ongoing basis. There is no end date by design. The fractional leader owns the function’s strategy and the decisions that need a senior signature, while your team runs the daily work. One growing consumer brand we know has kept the same fractional CFO since 2019. Senior judgment on a schedule the P&L can carry. The what is a fractional CFO post covers scope and cost in detail.
A contract professional sits at manager to director level and joins for a project or a coverage window. Think interim controller, senior demand planner, or a national accounts manager covering a parental leave. Contract engagements at ace average around 11 months. The contract staffing solutions buyer’s guide walks through how to scope and price these roles.
Contract-to-hire is any of the above with a planned conversion. You see the person do the work before you commit to a permanent salary. A skincare startup used this model for a business development hire this year: contract first, with conversion terms attached from day one. Across our placements, 28% of consultants convert to permanent roles. Our contract-to-hire guide covers the mechanics and the fees.
Two services sit next to these models. Consulting sells advice and a deliverable. The consultant does not hold the seat, manage your people, or sign anything. Retained search fills the seat permanently, with a search that averages 46 days at our sister firm and a fee around a quarter of first-year compensation. Neither is an interim executive solution, and both can run alongside one. An older post on when hiring an interim executive makes sense still holds up on the trigger events.
Interim vs fractional executive: how do you choose?
Answer four questions and the model picks itself. Most buyers have already answered two of them without noticing.
First, is the seat empty or under-served? An empty seat needs an interim. Someone has to sign the close and manage the team this week. An under-served seat looks different. Your controller is doing CFO work and drowning. Your founder is running marketing between investor calls. That is a fractional brief: add senior judgment without adding a full-time salary.
Second, is there an end date? A resignation, a parental leave, an integration, or a system implementation all have a horizon. Pick an interim or a contract professional and write the end date into the agreement. If you cannot name an end date, the need is ongoing, and a fractional executive fits better.
Third, how many hours does the problem need? Count the real hours. If the work fills 30 or more hours a week, you need an interim. If it fills eight to 24 hours, a fractional leader covers it. If the hours are real and the level is manager or director, a contract professional costs less than an executive doing the same tasks.
Fourth, will you want to convert? If there is any chance you keep the person, say so before the search starts. That changes who we present. Conversion fees at ace run 11 to 21% of first-year salary and decline with assignment length. A longer contract lowers the cost of keeping someone. Heidrick’s 2026 Talent Lens Survey found that 42% of interim projects now run longer than six months, up from 27% in 2021. Another 16% pass a year. Long engagements are normal now, so settle the conversion question early.
How do the five models compare on cost and duration?
The table puts the four staffing models next to retained search. Costs reflect our placements in consumer brands over the past year.
| Model | Intensity | Duration | Who employs | Typical cost | Best use |
|---|---|---|---|---|---|
| Interim executive | Four to five days a week | Six to twelve months, defined end | ace as employer of record | $1,000 to $2,000+ per day | Empty C-suite or VP seat, leave cover, integration, turnaround |
| Fractional executive | One to three days a week | Ongoing, no fixed end | ace as employer of record, or the executive’s own firm | Same day rate, fewer days | Under-served function at a $10M to $100M brand |
| Contract professional | Full-time, manager to director | Three to twelve months, averages 11 | ace as employer of record | $130 to $160 per hour all-in W2 at director level | Project work, leave coverage, system implementation |
| Contract-to-hire | Full-time | Three to nine months, then permanent | ace, then you | Bill rate plus 11 to 21% of first-year salary at conversion | A role you expect to keep but want to test first |
| Retained search | Permanent, full-time | Search of 46 days on average, then years | You, from day one | Fee around a quarter of first-year compensation | Long-term seat, succession, board-level hire |
Two notes on reading the table. Fractional day rates match interim day rates because the person is the same caliber. You pay for fewer days. The contract-to-hire conversion fee replaces a permanent search fee, so compare it to a retained fee.
How does ace run each model?
All of our interim executive solutions run on one process, with the terms adjusted to fit each model. We commit a slate within five business days of the brief. Clients hire after about two interviews, because the slate is short and pre-vetted. There is no retainer. You are invoiced as worked, and the engagement ends when you say it ends.
For interim, fractional, and contract placements, ace is the employer of record. We run payroll, taxes, workers’ comp, unemployment, and benefits. That removes misclassification risk and the multi-state compliance work that stops many brands from hiring in California and New York. Our employer of record vs staffing agency post covers the legal side.
This summer, two UK-owned beauty brands each needed a six-month interim to cover a maternity leave. One was an interim account director in sales finance. The other was an interim commercial lead with three direct reports selling into Target, Walmart, and club. Both start in mid-October with two to three weeks of overlap with the incumbent. Rates land at $130 to $160 per hour all-in W2, conversion to permanent is allowed, and payment terms are net-30 with no upfront fee. That is the interim model in plain form: defined period, defined seat, defined cost.
The other models look different in practice. The fractional CFO who has stayed since 2019 renews on a rolling basis with no search cost after year one. The skincare startup’s business development contract carried a conversion clause from day one. A family-owned distributor planning a COO succession over 12 to 18 months went to our sister firm, Protis Global, for retained search. That seat needs someone for a decade.
Heidrick’s 2026 Talent Lens Survey found that companies use interim talent to fill critical skill gaps (75%), for objective insight (63%), and to accelerate key initiatives (61%). Skill gap and speed point to interim or contract. Objective insight, on a schedule you can afford, points to fractional.
FAQ
What is the difference between an interim and a fractional executive?
An interim executive works near full-time for a defined period and owns the seat. A fractional executive works one to three days a week on an ongoing basis and owns the function’s strategy while your team executes. Pick interim for an empty seat with an end date. Pick fractional for an under-served seat with no end date.
How much do interim executive solutions cost?
Senior interim and fractional executives bill about $1,000 to $2,000+ per day in our placements. Director-level contract professionals in beauty and CPG run $130 to $160 per hour all-in W2. Professional contract markups run 35 to 50%, executive 40 to 60%. There is no retainer, and you are invoiced as worked.
Can a contract or interim executive convert to a permanent hire?
Yes, and 28% of consultants placed by ace do convert. Conversion fees run 11 to 21% of first-year salary and decline as the assignment gets longer. Tell us at the brief stage if conversion is likely, because it changes which candidates we present and how the agreement is written.
How fast can an interim executive start?
ace commits a slate within five business days of the brief, and most clients hire after about two interviews. A start within two to three weeks is common for interim and contract roles. Fractional executives often start sooner because the weekly commitment is smaller and the person may already be running other engagements.
Need help matching the model to the seat you have open? Reach us at https://acetalentcurators.com/get-in-touch/
