Accountants for Contractors | IR35 Specialists

Contracting made clear

Maximise your take-home, stay on the right side of IR35

Contracting through your own limited company can be highly tax-efficient — if it's set up right. IGI handles your company compliance, reviews your IR35 status on every contract, and structures your pay so you keep as much as legally possible.

You get a dedicated accountant who understands day rates, expenses and umbrella vs limited, plus a slick app that turns timesheets into invoices in seconds.

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What's included

IR35 status reviews on every new contract
Take-home pay optimisation via salary & dividends
Year-end accounts, CT600 & confirmation statement
Same-day invoicing app & expense tracking
Free company formation if you're just starting out

Get started from £75/mo

Why contractors choose IGI

Built for the way you work

IR35 confidence

We assess each engagement against the off-payroll rules, flag risks early, and help you keep evidence that supports your status — inside or outside IR35.

More in your pocket

We optimise how you draw money from your company, claim every legitimate expense, and plan ahead so there are no nasty surprises at year end.

Invoice in seconds

Raise professional invoices from your phone, track who's paid, and see your real-time take-home — all in the IGI app and Client Hub.

Inside vs outside IR35

Outside IR35 — you're genuinely in business on your own account and can pay yourself tax-efficiently through your company.
Inside IR35 — the engagement looks like employment, so tax is handled differently. We make sure you're compliant and still as efficient as allowed.
Contract reviews — send us a new contract and we'll review the working practices and wording before you sign.

Get a contract reviewed

IR35, in plain English

We take the guesswork out of off-payroll rules

IR35 decides whether HMRC sees you as genuinely self-employed or as a "disguised employee" for a contract. Get it wrong and the tax bill can be significant.

Your IGI accountant reviews each contract's wording and your actual working practices — control, substitution and mutuality of obligation — then gives you a clear status view and a record to back it up. No jargon, just a straight answer and a plan.

Contractor pricing

Fixed monthly plans for contractors

billed monthly · no tie-ins. New clients save 40% for 3 months.

Essential

Single-contract limited company.

£75/ mo

Year-end accounts & CT600
Director's Self Assessment
Invoicing app & software
Dedicated accountant
IR35 contract reviews

Choose Essential

Contractor

Our promises to every client

A fixed fee, in writing

Your monthly price and exactly what it covers are set out in your letter of engagement before any work starts. No hourly billing and no surprise invoices.

One named accountant

You deal with the same person who knows your business, by phone, email or video, instead of a different call-centre voice each time.

Free, handled switching

We contact your previous accountant, collect your records and take over your deadlines, so moving to us costs nothing and takes little of your time.

Good to know

Contractor FAQs

IR35 (the off-payroll rules) determines whether a contract is genuine self-employment or effectively employment for tax purposes. It affects most contractors working through a limited company. We review each engagement so you know your status and stay compliant.

If your contracts are typically outside IR35, your own limited company is usually the most tax-efficient route. For short or inside-IR35 engagements, an umbrella can be simpler. We'll talk you through the trade-offs for your situation — no pressure.

Depending on your circumstances and IR35 status, this can include travel and accommodation, equipment, software, professional subscriptions, training and a portion of home-office costs. Your accountant makes sure you claim everything you're entitled to.

Yes. On our Pro plan we provide accountant's certificates and income references for mortgage and rental applications — lenders often prefer these from a qualified, regulated accountant.

Contractors

Accountants for contractors & IR35

Specialist fixed-fee accounting for UK contractors — IR35 status reviews, take-home pay optimisation, a same-day invoicing app and a dedicated accountant who knows contracting inside out.

IR35, made clear

IR35 is the single biggest factor in whether your contracting income is tax-efficient. We review your contracts and working practices, give you a clear inside/outside status view in writing, and keep the evidence you’d need if HMRC ever asked — see our complete IR35 guide.

Whether you work inside or outside IR35, we build the right financial plan around it.

Maximise your take-home pay

Outside IR35, a tax-efficient salary and dividend split through your own limited company keeps more in your pocket. We optimise your pay, handle your company compliance and give you a same-day invoicing app so you get paid faster.

Both. We assess each engagement, give you a clear written status view and structure your finances appropriately either way.

Many contractors use a limited company for efficiency outside IR35; others use an umbrella. We advise on the best route for your contracts and form your company free when you join.

Our contractor plans start from £75/month, including IR35 reviews, company compliance and unlimited support.

Accountants for contractors & freelancers