Fixed-Term Contract or Day Rate? Choosing the Right Contract Type for Your Role

It's one of the most common questions we're asked by hiring managers: “Should we run this as a fixed-term contract, or bring someone in on a day rate?”

It's rarely a straightforward call. The right answer depends on the role, the timeframe, the market you're hiring into, and, increasingly, on where you sit under the off-payroll rules. Get it right and you secure strong people quickly. Get it wrong and you spend three months struggling to fill a role that never needed to be structured that way.

Here's how we'd think it through.

First, the basics

A fixed-term contract (FTC) is essentially permanent employment with an end date. The person becomes your employee for a defined period, on your payroll, with holiday, pension and the usual entitlements. Classic use cases are maternity cover, a defined programme of work, or a role you expect to make permanent later.

A day-rate contract is a temporary assignment, usually filled by a specialist who works through their own limited company (a PSC) or an umbrella company, and is paid an agreed rate per day worked. It's the standard model for project-driven, short-notice or highly technical work.

Both have their place. The mistake is defaulting to one without thinking about which actually fits.

The bit most people underestimate: the talent pool

This is where the decision is usually won or lost, and it's the factor hiring managers most often overlook.

FTCs draw from a genuinely narrow pool. Think about who's realistically available. Career contractors, the experienced specialists working through their own limited companies, generally aren't interested; an FTC gives them employment terms they don't want and a rate that rarely matches. And permanent employees are understandably reluctant to give up a secure role for one that ends in nine months.

That leaves you fishing in a smaller pond: people who are immediately available, or who are unhappy enough to jump without long-term security. Sometimes there are excellent people in that group. Often, there aren't.

Day-rate assignments open the market up. You're now able to reach experienced HSE and construction specialists who move between projects by choice, who can start quickly, and who have seen a lot of sites and a lot of problems. For a role that needs someone effective from week one, that matters enormously.

So the honest position is this: an FTC can look like the sensible, stable option on paper, but if it means you can't attract anyone good, it isn't the cheaper choice at all.

Cost: headline versus actual

A day rate almost always looks more expensive. Compare it against an annual salary divided by working days and it can feel eye-watering.

But compare like with like. With a day rate you pay only for days actually worked: no holiday, no pension, no sick pay, no notice period, no redundancy exposure. You can scale up when a project ramps and stop when it doesn't. If the workload is variable, uncertain, or tied to a programme that might shift, that flexibility has real financial value.

An FTC is more predictable and can be more economical over a long, stable, defined period, provided you can actually recruit someone good into it.

Speed and flexibility

Day-rate contractors typically move fast. Notice periods are short or non-existent, and they're used to landing on an unfamiliar site and being useful immediately. When a project starts sooner than planned, or a safety resource gap appears without warning, that speed is often the whole point.

FTC hires usually come with a notice period and a longer onboarding runway, because you're recruiting them as an employee.

The risk of leaning too hard on contractors

It isn't a one-way argument. Build a function that runs entirely on day-rate contractors and you'll feel it eventually.

Knowledge walks out of the door at the end of each assignment. Relationships with site teams have to be rebuilt each time. Long-term culture change, the thing that actually shifts safety performance, is hard to drive when the people driving it keep changing. And you don't develop your own people if you never hire any.

The strongest teams we see use both: a permanent or FTC core that holds the knowledge and the culture, flexed with day-rate specialists when projects demand it.

Where IR35 sits in 2026

The off-payroll rules introduced in April 2021 still apply: for medium and large private-sector clients, the responsibility for determining a contractor's IR35 status sits with the end client, not the contractor.

Two things have changed that are worth knowing.

Small company thresholds are rising.From 6 April 2026, the thresholds that define a “small” company, and therefore exempt it from the off-payroll rules, increase to £15m turnover (from £10.2m) and £7.5m balance sheet total (from £5.1m), with the 50-employee headcount unchanged. Thousands of businesses will move from “medium” to “small”, shifting IR35 responsibility back to the contractor's own limited company. Because the size tests look at the previous financial year, most businesses will feel this from April 2027.

Umbrella company liability is tightening. Also from 6 April 2026, new PAYE rules mean agencies and end clients can be held jointly and severally liable if an umbrella company in the supply chain fails to account properly for PAYE and NIC. In short: who you engage through matters more than it used to, and supply-chain diligence is no longer optional.

None of this should scare you away from day-rate hiring. It simply means the compliance side needs to be handled properly, which is exactly what a good recruitment partner should be doing for you.

How to decide: five questions

Rather than starting from the contract type, start from the role:

• Is the end date real?A genuine, fixed piece of work suits an FTC. “Probably about a year, we'll see” usually suits a day rate.
• How quickly do you need them? Weeks, not months, points to day rate.
• How specialist is the requirement? The more niche the skillset, the more likely the best people are contracting.
• Might this become permanent?If there's a real chance, an FTC (or a contract with a view to perm) can work well.
• What can you actually attract?Be honest. If the FTC package won't tempt anyone strong, the decision has already made itself.

In short

Fixed-term contracts offer stability, integration and predictability, but a much smaller talent pool, and often a slower, harder hire.

Day rates offer speed, flexibility, cost control and access to genuinely specialist people, at the cost of continuity, and with compliance that needs handling properly.

Neither is right or wrong. The skill is matching the contract type to the reality of the role and the market you're hiring into.