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Expert IR35 Guidance – Your guide to IR35 beyond April 2021

IR35 affects everyone and is a term that every Limited Company contractor and their contracting accountant need to be familiar with. With big changes now in effect, what does this legislation mean for Limited Company contractors?

In this guide, we look at what IR35 actually is, what it means to be found ‘inside’ and ‘outside’and the tax implications your status has on your take-home pay.


IR35 is tax legislation introduced to combat tax avoidance by workers supplying their services to clients/hirers via an intermediary, such as a limited company, or in contracting terms a ‘Personal Services Company’ (PSC), who would otherwise be an employee. HMRC refers to these individuals as “disguised employees”.

If ‘inside’ IR35, you’re considered a permanent employee and will be taxed as such, either via payroll or an Umbrella Company. If ‘outside’ IR35, you’re considered to be self-employed and will be entitled to structure your remuneration so as to benefit from the lower rates of tax that apply to dividend income.


Trading as a Limited Company and working outside of IR35 can result in higher take-home pay than PAYE or an Umbrella Company agreement, which is why so many contractors prefer to work this way.

Essentially, outside of IR35 you are able to split your income between salary and dividends in order to keep your Tax and National Insurance contributions to a minimum. You can thereby achieve higher take-home pay than a full-time employee earning the same base pay.

As a ‘deemed employee’ working on a contract inside IR35, you are expected to pay the same amount of Tax and National Insurance contributions as a full-time employee whether that’s via your Limited Company, through your client’s payroll or via an Umbrella Company. Your take-home pay would therefore be lower than if your contract was outside IR35.

Most contractors are at pains to avoid working inside IR35 for these reasons.


HMRC have a set of rules to determine if you are working inside or outside of the IR35 legislation. The rules relate to the way you work as well as the actual contract details. The rules aim to identify whether you are actually working and behaving as you would if you were permanently employed doing the same job:

  1. Personal service/substitution
    If your Limited Company has the right to provide someone other than yourself to deliver the services that it is contracted to provide, then this would strongly indicate that you are operating outside of IR35.
  2. Control
    The level of control that your client has a right to exercise over your working practices impacts on whether you will be inside or outside of IR35. If you are in charge of when and where but most importantly how you work, you are less likely to fall inside IR35.
  3. Mutuality of obligation
    As an employee you are obliged to go to work at certain times and days of the week and there is an obligation to pay you even if the work dries up. If this describes you, then you could be ‘deemed employed’. A higher level of obligation implies that the effects of IR35 might apply. 


It’s all very well having these rules and tests, but whose responsibility is it to apply them on a day-to-day basis in order to determine the IR35 status of your contracts? 


Hirers will have to determine the employment status of the contractors they engage. Having determined the contractor’s status, hirers will then have to inform the “fee payer” (often the supplying agency) whether the contractor should be paid net or gross of tax.

Who decides on IR35 status should be carried out on a case-by-case basis (as mandated by HMRC). However, decisions on IR35 are still more likely to be risk-averse and some contractors remain wary of Public Sector assignments for this reason.

So it’s important to remember that although some contractors remain wary of assignments, they don’t mean you’ll automatically be working inside IR35.



There’s no getting away from the fact that contracts inside IR35 could impact on your take-home pay compared with one on the same day rate that is outside IR35. There’s always the option to negotiate a higher day rate to counter this, and there’s more to life than money, right? So if the project looks great, the timing works for you, the experience is going to look cracking on your CV, and there’s no negotiating over terms or the IR35 status, then ask yourself if the money really is a deal-breaker.

Before turning down a contract based purely on IR35 status, take the time to consider what the project means for you and whether the other benefits make it worth proceeding.


If you find yourself temporarily needing to work on a PAYE basis, one of the ways of doing so is through an Umbrella Company – or ‘Professional Employer Organisation’ as they are also known (especially in the US). An Umbrella Company effectively creates an overarching contract between you and the hirer and deals with your admin, tax and payroll. The hirer pays your Umbrella Company who deducts their fee, National Insurance and income tax and passes what’s left on to you. You’re effectively taxed as an employee.

That said, IR35 is really nothing more than a different basis used to calculate tax when certain conditions apply. Unquestionably, the tax liabilities inside IR35 are higher than those outside IR35 but they are also less than the tax liabilities incurred as an Umbrella Company. So if you are ‘deemed employed’, and therefore inside IR35, you will still be better off trading through a Limited Company than an Umbrella (and it’s worth pushing back with any agency or client trying to push you down the Umbrella route for their own convenience). You will pay the tax and National Insurance contributions required based on your ‘deemed salary’ (your contracting accountant can help you with this).

Rightly or wrongly, there will always be clients who insist that they will only engage with you via an Umbrella Company, so if you do find yourself having to make the switch for a contract, it’s worth ensuring that you’re with an accountant like Intouch who makes that easy for you.

Intouch IR35 support – all part of the service
Switch between Limited and Umbrella
• Minimum disruption – just one call
• Finances kept up to date and in one place


If you are involved in a contract that falls inside of IR35 then a calculation is made each year to determine the ‘deemed salary’. Your contractor accountant can do this for you. An IR35 deemed salary is simply a calculation of the Income Tax and National Insurance due. You do not have to actually pay yourself the deemed salary, but you do have to pay the calculated PAYE and National Insurance contributions to HMRC.

If a public sector body has confirmed that you are inside IR35, then the fee payer (usually the agency) will deduct the NI and tax, and pay the Ltd Company the net income after tax. This can be taken straight out of the company, with no additional tax implications.

IR35 deemed salary calculations follow the tax year (6th April to 5th April) rather than your company year. Contractors with contracts inside IR35 may choose to pay a small salary throughout the year or request their contractor accountant to estimate what their deemed salary will be and pay a monthly salary in line with that. The benefit is that deemed taxes due will be spread evenly throughout the year, and you will have a smaller balancing payment each April.


Our specialist IR35 accountants are here to help ensure that you and your hirer continue to work together compliantly and in a way that supports your working arrangements. All of our IR35 support services are free to all of our clients

Unlimited IR35 contract and working practices reviews

We understand that IR35 status is a big concern for contractors. A move to PAYE or Umbrella could see a drop of 20-25% in your take-home pay. So, at Intouch, we offer unlimited IR35 Contract and Working Practices reviews with practical reports and advice to help you understand if your review is correct.

Although the final decision is out of your hands, you’ll get advice on your contract and working practices in a format that you can easily use for discussion with your hirer. We can even offer legal support to hirers who are struggling to apply the ‘reasonable care’ that’s expected of them by HMRC.

Switch between Limited and Umbrella with Flex

Contractors may find themselves needing the flexibility to switch between their Limited Company and an Umbrella Company and back again at short notice.

Our Flex service gives you the safety net to switch between your Limited Company and an Umbrella Company (if required) with minimum disruption. Flex will keep the daily tasks of your Limited Company active while you use Intouch Umbrella (powered by Brookson). You’ll still have visibility of your finances in the Intouch portal and a direct line to your Personal Accountant. When it’s time to switch back to your company, just let us know – everything will be up to date and waiting for you.

IR35 specialist law firm support

We’re supported by our group company Brookson Legal – the only SRA-regulated law firm that focuses on IR35 for agencies and end hirers. They have been advising on IR35 since its introduction in April 2000 and members of their team have sat on HMRC’s IR35 Forum.


Get in touch today for more information about how our expert contracting accountants can help you with understanding IR35 and much more.

t: 01202 901 385

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