Contracting vs Permanent in Finance: Honest Comparison

Every qualified accountant considers contracting at some point, usually after seeing a day rate that looks like double their salary. The arithmetic is more complicated than that, and so is the decision. Contracting genuinely pays more for the right person in the right market; it also removes a great deal that permanent employment provides quietly and that people only notice once it is gone. This guide sets out the comparison honestly — the money after everything, the security, the tax position, the career effects — so you can decide on the facts rather than on a day rate.

The money, properly compared

The headline comparison is misleading because a day rate and a salary are not the same unit. Work it through.

The honest summary: at 210 billable days a £500 rate produces meaningfully more gross than an £80,000 salary, and after adding back pension, bonus and benefits the gap narrows considerably — but it is still a gap, and in a busy market it is a real one. The risk sits in the billable-days number. At 160 days the comparison reverses; at 240 it widens sharply. Contracting pays more in exchange for carrying the utilisation risk yourself. Day rates by role are in our interim finance rate card.

What contracting genuinely gives you

Higher earnings in a busy market, as above — and the ability to raise your rate as your reputation builds, which is more responsive than an annual review.

Variety and pattern recognition. Four businesses in three years teaches you more about what works than one business in ten. Interims develop judgement faster than permanent equivalents, and it is genuinely marketable.

Defined scope with an end. You arrive, do the thing, hand over, leave. No performance cycle, no politics you have to live with for years, no five-year plan you are asked about.

Control over your time. Gaps between assignments are unpaid, but they are yours. Contractors take three weeks off without asking anyone.

And a faster route to seniority in some cases. Businesses will hire an interim into a stretch role they would not risk permanently, because the commitment is bounded. Plenty of first FC and FD experience is acquired this way.

What it takes away

The part most articles skate over.

Income certainty. Not just the gaps — the not knowing. An assignment ending at four weeks’ notice with nothing lined up is a genuinely different experience from a secure salary, and some people find it corrosive regardless of the arithmetic.

Employment protection. No redundancy rights, no unfair dismissal protection, minimal notice. If the client’s budget changes, the arrangement ends.

Pension and benefits. Self-funded, and easily neglected. Contractors who do not deliberately replicate the employer contribution are quietly worse off than the day rate suggests.

Mortgage and credit friction. Lenders treat contractors differently, and typically want two to three years of accounts or a track record of renewed contracts. Worth knowing before a house purchase rather than during one.

Development and belonging. No study support, no formal training, no team that is yours, and no one invested in your progression. Some find that liberating; others find it isolating after two years.

And the constant business development. Even fully booked, the pipeline needs attention, because assignments end.

IR35 and how you get paid

The tax position determines a large part of the real economics, and it needs understanding before you decide.

Contractors typically work through their own limited company or an umbrella company. Where an assignment is outside IR35, you can take income as a mix of salary and dividends through your company, which is generally more tax-efficient. Where it is inside IR35, income is taxed broadly as employment income, and the advantage over a salary narrows considerably — frequently to the point where an equivalent permanent role is better once benefits are counted.

Two things to understand. For medium and large clients, the client determines the status, not you, and the determination must reflect the actual working arrangement rather than the contract label. And blanket inside-IR35 determinations are common in risk-averse organisations, which is why the same nominal rate can be worth very different amounts depending on the engager. HMRC’s off-payroll guidance is the primary source, and our guide to IR35 and employment tax covers the framework. Take proper advice from an accountant before setting up — this is one area where the general guidance genuinely does not substitute for advice on your circumstances.

Where the demand actually is

Contracting is not equally available at every level, and this determines whether the choice is even open to you.

Strong and consistent: Financial Controller, Financial Accountant, Management Accountant, Finance Manager — the seats businesses need covered when someone leaves or a project lands.

Strong but lumpier: Finance Director and CFO, where assignments are fewer but longer and better paid, and where reputation matters most.

Qualification remains the baseline in interim work as in permanent — ICAEW, ACCA or CIMA, and clients verify. Genuinely scarce and well paid: regulated-firm finance, CASS, regulatory reporting, consolidation and systems implementation. Specialists in these areas are rarely between assignments — see our FCA-regulated finance practice.

Thinner: newly qualified and first-time roles. Interim clients buy experience they can deploy immediately; contracting suits people with a track record, which is why most successful contractors start after five or more years post-qualification.

Who it suits

Four honest questions. Can you tolerate income variability — not intellectually, but with your actual commitments? A three-to-six-month cash buffer is the practical entry requirement, and self-employed pension planning needs deliberate attention — MoneyHelper covers the options. Do you have a network? First assignments come from people who know your work far more often than from advertisements; leaving a role on good terms matters more in this career than any other. Do you enjoy the early diagnostic period? Walking into an unfamiliar business, finding out what is wrong and deciding what matters is the recurring core of the work — people who prefer to build over years find it unsatisfying. And do you need to belong somewhere? Some people are energised by moving; others miss the team more than they expect.

You can also do both

The choice is less binary than it looks. Fixed-term contracts give employment status and benefits with a defined end — a middle option that suits maternity cover and defined projects, particularly up to manager level. Fractional arrangements — one or two days a week, ongoing — let experienced finance leaders build a portfolio of clients rather than a sequence of full-time assignments; our guide to the portfolio FD career covers that route, and interim versus fractional the distinction.

And the movement runs both ways. Contractors return to permanent roles regularly, frequently at a higher level than they left — interim experience is respected, and a period of contracting is no longer read as instability the way it once was. Equally, many interim assignments convert to permanent when both sides want it.

If you decide to try it

Four practical steps. Secure the first assignment before you resign if you can do so properly — a standing start with no income and no pipeline is the hardest version of this. Build the buffer before, not after. Register with two or three specialists who genuinely work the interim market rather than a dozen who do not — interim assignments are filled from a bench in 48 to 72 hours, so being known before the brief arrives is what matters. And set up properly: accountant, company or umbrella, professional indemnity insurance, and a clear understanding of your IR35 position.