IR35 Guide for Contractors

Say "IR35" to a room full of contractors—and you'll hear a collective groan.

And for good reason.

IR35 has blurred the line between freelance freedom and permanent employee obligations. Now, more than ever, contractors are asking:

🤔 Am I truly independent… or just taxed like I'm not? 🤯 What if I get reclassified mid-contract? 💸 Is it even worth contracting anymore?

It's enough to make even the most experienced contractor feel uncertain.

But here's the truth:

🔒 IR35 is complex—but it's not a reason to live in fear.

Because the most confident contractors don't ignore it. They understand it. Plan for it. And work within it—without compromising their careers.

Quick Answer

IR35 status comes down to your actual working practices, not just the wording of the contract: inside IR35 means you're taxed like an employee (PAYE), often with fewer benefits; outside IR35 means you operate as a genuine business responsible for your own tax and setup. What determines which one applies is whether you control how/when/where you work, whether you can send a substitute, and whether you're treated as part of the internal team — a contract that says "outside" doesn't protect you if your day-to-day behaviour says "inside".

Written by [Neil Millard](/about), a cloud and automation specialist with 20+ years' experience delivering infrastructure for organisations including Barclays, HMRC, Marks & Spencer, and AXA.

Here's how to move from fear to control:

1. Know the difference between 'inside' and 'outside' IR35

Inside: You're taxed like an employee (PAYE), often with fewer benefits. Outside: You operate as a true business, responsible for your own taxes and setup.

Neither is inherently bad—it depends on the contract and how you manage it.

2. Review your working practices—not just the contract

It's not enough for a contract to say "outside IR35." Your actual day-to-day behaviour matters:

• Do you have control over how, when, and where you work?
• Can you send a substitute?
• Are you part of the internal team or a distinct provider?

HMRC cares more about what you do than what's written down.

3. Get an expert opinion—before it's a problem

Use IR35 review services. Get your contracts checked. Speak to an accountant who understands contractor structures. And don't rely on your client to get this right.

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🎯 That's why The Confident Contractor includes an entire focus on compliance.

Because when you understand how IR35 works, you can:

✔️ Price accordingly ✔️ Negotiate with clarity ✔️ Avoid costly mistakes

Most importantly, you can move forward with confidence—knowing your setup supports your career, not undermines it.

📩 DM me if IR35 has been living rent-free in your head. Let's clear it up and help you contract with confidence.

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