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IR35, limited company tax, and contractor finances.

We are specialist accountants for UK contractors and PSC directors. IR35 status reviews, salary and dividend planning, expenses, and pension strategy. We only work with contractors, so we understand the specifics that a generalist accountant will not.

Fixed fees. Plain English. No hard sell.
£10k+
Typical annual saving outside IR35 vs umbrella
~2M
UK contractors affected by IR35
6 years
HMRC can investigate past IR35 filings
24h
Our response guarantee

IR35 is genuinely complex and the rules changed significantly in April 2021. We help contractors understand their position, structure their affairs correctly, and avoid the tax and penalty risks of getting it wrong.

What we have done for contractors

Composite snapshots based on patterns across our contractor clients. Names and figures anonymised. The tax mechanics are real.

We reviewed the contract before renewal. Three working practice changes and the IR35 position shifted. Saved us over £14,000 that tax year.
IT contractor, financial services sector (outside IR35 post-review)
I had been on umbrella for two years unnecessarily. Once we modelled it properly, moving to a PSC saved around £8,000 in year one.
Engineering consultant, mid-contract switch to limited company
Pension contributions from the PSC. I had no idea how tax-efficient it was. Set up in month one, and it will save us tens of thousands over the next few years.
IT contractor, first year as PSC director

The financial challenges that are specific to contracting.

IR35 uncertainty

Your end client issued an SDS that says inside IR35. Or your agency told you the contract is outside. Or you just do not know. Getting this wrong costs you thousands in extra tax and penalties. We review your contract and actual working practices, not just the paperwork.

Limited company vs umbrella

Umbrella is simpler. A PSC is usually more tax-efficient outside IR35. Inside IR35, the gap closes significantly. Most contractors who call us have never had anyone sit down and model both scenarios for their actual day rate and expenses. We do that.

Director pay and dividends

The optimal salary/dividend split changes every year as rates and allowances shift. Taking too high a salary wastes NI. Taking too low a salary costs you state pension entitlement. Getting it right is a planning exercise, not a guess.

Expenses going unclaimed

The 24-month rule on travel, home office costs, equipment, training and professional subscriptions. Most contractors we speak to are leaving something on the table, either through overcaution or because their accountant does not specialise in contracting.

A generalist accountant handles your compliance. We handle contractor-specific tax.

The rules around IR35, off-payroll working, PSC dividends and contractor expenses are specific enough that a generalist accountant, however competent, will miss things. We see these issues every week across a large contractor client base, so we know where the risks and opportunities are.

How Contractor Tax Accountants handles typical contractor accounting areas
AreaOur approach
IR35 status reviewPer contract, against actual working practices
Off-payroll rules (April 2021)Understood for private and public sector
Corporation tax bands19% / marginal / 25% (modelled for your PSC)
Salary and dividend splitOptimised each tax year
Travel expenses (24-month rule)Applied correctly, not guessed
Pension via PSCEmployer contributions built into planning
CEST and SDS adviceExplained plainly, not just the tool output
Professional accountants in a client consultation

Your accountant should understand how contracting works

IR35 rules, PSC dividends, the 24-month travel rule, off-payroll working. We see these issues every week, so we know where the risks and opportunities are.

Get your contractor finances properly sorted

Book a free call. We will talk through your IR35 position, your current structure and whether there are things worth changing. No hard sell, no obligation.

Contractor specialists only
We do not work with generalist clients
24-hour response time
Usually the same day
Fixed fees, no surprises
Quoted before we start
All conversations are confidential
We never discuss one client's affairs with another

Book your free call

We respond within 24 hours and store your details securely.

Common questions

Do I need a specialist contractor accountant?
Not strictly. But a generalist accountant will rarely know the nuances of contracting: IR35 status testing, off-payroll working rules, PSC dividend planning, the 24-month travel rule, or how to use your limited company to make pension contributions. A specialist saves you money and helps you avoid the risks that a generalist misses.
How do I know if I'm inside or outside IR35?
The three key tests are control (does the client direct how you do the work?), substitution (could you send someone else?), and mutuality of obligation (is there an expectation of continued work?). HMRC's CEST tool gives a result but is not definitive. We review your actual contract and working practices and give you a reasoned opinion.
Is it still worth running through a limited company?
Outside IR35, almost always yes. The tax savings versus umbrella are significant, typically £5,000–£15,000 a year depending on day rate. Inside IR35, the gap narrows but there are still advantages: pension contributions via the PSC, the small salary band, and the option to work on other contracts outside IR35. We model both for every client.
What are your fees?
We work on fixed monthly fees so you always know what you're paying. The exact figure depends on the complexity of your situation: whether you have other income, payroll, VAT, or international exposure. We quote after a short discovery call rather than publishing a price list that won't apply to most clients.

Practical IR35 and contractor tax guides.

Plain English articles on IR35 status, off-payroll rules, limited company tax, expenses, dividends and pension planning. Written by specialist contractor accountants, not content agencies.