How salary sacrifice pension changes will hit contractors

In last month's not-so-surprising Budget 2025, Rachel Reeves announced a fairly hefty raid on salary sacrifice pension contributions from April 2029.

The chancellor's raid will come as a blow to the UK's contractors, who have been taking advantage of this retirement savings strategy to reduce the increased tax and National Insurance Contributions burden by being inside IR35.

Reeves just in effect announced 'While Stocks Last'

It's worth noting that salary sacrifice isn't changing until April 6th 2029, which means contractors have this current tax year (2025-26), plus an additional three tax years, to make the most of the current rules, writes Angela James, founder of contractor financial planning advisory Yolo Wealth.

Therefore, like all good 'While Stocks Last' sales, if you are not currently taking advantage of salary sacrifice, now may be the time to assess your finances to see what tax-efficient pensions contributions you can start making.

So make use of this NIC saving, which isn't to be sniffed at, while it is still available. Remember, your pension allowance is not affected by these changes, meaning you will continue to have the same £60,000 annual pension allowance post-April 2029. Provided this too isn't 'raided' at a future budget of course!

How is salary sacrifice changing?

Like any big change at a budget, the devil is in the detail. And while there is some guidance from the government available, more is likely to come as we edge closer to the 2029-30 commencement date.

But for now, let's work with what we do know, and I'll try to explain what this could mean for contractors.

From April 2029, only the first £2,000 of employee pension contributions through salary sacrifice will be exempt from NIC.

Will pensions remain tax-efficient for contractors?

All contributions up to your usual annual pension allowance will continue to be exempt from income tax, and the tax relief is not changing. Pensions will remain the single most tax-efficient investment available to contractors.

Therefore, employees and employers can continue to make salary sacrifice contributions — but the employee contribution above £2,000 will be subject to both Employee and Employer NIC, just like any other form of pension contribution.

How to think about the salary sacrifice pension changes if contracting via an umbrella company

To fully understand the salary sacrifice changes, contractors operating through an umbrella company must keep the following in mind.

You are effectively both the employee and the employer, given that your employer deductions are taken from the gross contract invoiced income, and then your employee deductions are then taken from that net amount.

To paraphrase the government announcement of the changes, 'From April 2029, all employer contributions will continue to be free from NIC.'

In my view, this is the ambiguous part, and I'll cover what I think on this aspect below.

But crucially, employees and employers will pay NIC on the salary sacrifice contribution amounts above £2,000.

Salary sacrifice raid: how umbrella company contractors are hit

If you are a brolly contractor, most umbrella companies will only facilitate salary sacrifice to your own private pension arrangements, as opposed to their Automatic Enrolment (AE) pension option.

Umbrella companies' AE solutions are usually simple, compliant options such as NEST, and this straightforwardness is done for the benefit of the umbrella meeting its legal obligations to AE.

Most of the AE pension solutions are what's called "relief at source," meaning the employer pays in their gross pension contributions for you (a 3% requirement), and then you pay in your bit (a 5% requirement), with the tax relief applied to the pension for you at the basic rate.

If you're an umbrella contractor, these contributions are deducted from your gross pay after tax and NIC. Your employer's contribution to the AE pension is usually deducted from your invoiced contract income.

Is the government guidance on the salary sacrifice changes clear?

Unfortunately, there is some ambiguity in the official guidance on these salary sacrifice changes, so contractors will have to wait until more information becomes available.

For now, it's most likely the safest bet to assume that the part the contractor is electing to sacrifice is relevant to the proportion that the 'employee' themselves is electing to contribute/sacrifice.

My current view (pending clarification from the government) is that the new salary sacrifice rules will apply to the actual proportion of salary that the employee is electing to give up, or "sacrifice," for the pension.

How much is the salary sacrifice tax-free allowance from April 2029?

And then, £2,000 of this will be your new 'salary sacrifice tax-free allowance,' and the remainder will be subject to NIC in the same way it would be should it be taken as income.

According to the government, "All employer contributions will continue to be free from NIC under salary sacrifice."

The meaning behind 'employer'

Please note here as a contractor, that your employer — the umbrella — will not make any salary sacrifice pension contributions on your behalf, as they do not make employer contributions for you as part of a remuneration package, so, as a result, it's not likely to be quantified as 'employer' in the sense I imagine the guidance is dictating.

Looking at the government's wording ("All employer contributions…"), I take this to mean that the amount the employer has stated as their scheme-committed contributions for all employees.

Where does the minimum 3% from Auto Enrolment come into play?

Under most umbrella companies, this would be the minimum 3% for AE, which most do not pay into contractors' private arrangements under salary sacrifice. Anything over and above this 3% threshold will likely fall under employee contributions. As an umbrella contractor, this means £2,000 of the contributions that you arrange under salary sacrifice will save you NIC, and then the rest will be subject to NIC as if it were not being sacrificed for pension.

You will continue to gain full tax relief on the contributions.

The meaning behind 'employee'

Today, any pension contributions arranged under salary sacrifice are paid into your pension as full employer contributions before tax and NIC.

However, the amount you arrange to sacrifice I would determine as 'employee' under the new rules.

Salary sacrifice is an arrangement where you, the employee, agree to forego an amount of your gross salary in return for that foregone money going into a pension instead, and the employer arranges for it to be paid by them as an employer contribution.

The remainder of your then 'new' salary is paid through payroll and subject to tax and NIC in the normal way.

The Employee Sacrifice

Currently, if you are making salary sacrifice through your umbrella company, this is usually all termed and considered the 'Employee Sacrifice.'

Let me outline to contractors what this saves currently under the existing salary sacrifice regime.

(N.B. Calculations are based on a gross income of £10,000 p/m with a £5,000 pension contribution).

Moving to the new salary sacrifice regime from April 2029, if you elect to forego an amount of your gross contract income, this is likely to all be considered "employee contributions" for the determination of the new rules (as outlined above).

This means that if you were doing the same as the above, i.e. contributing £60,000 p/a into your pension under salary sacrifice, only the first £2,000 would be exempt from NIC, which is approximately an allowance of £166.66 p/m.

I estimate this to increase the NIC burden by £821.67p/m (based on the calculations herein).

Don't throw the pension out with the bathwater

While this will no doubt deal a hefty financial blow, the pension still has the significant advantage of reducing your 'taxable pay down.'

As you can see from the two scenarios above, the taxable amount is still the salary minus the pension contribution.

If you were to not make any pension contribution whatsoever, the income tax liability to HMRC would be a severe £3,286, compared to £952.66.

Therefore, still a saving of £2,333, roughly.

Contractors, gain a deeper understanding of the impact of salary sacrifice changes

The changes coming to salary sacrifice can feel confusing to contractors, and they are yet to be made crystal clear by the government.

If you feel that, even with the much-needed clarifications from the government, you will still probably be unsure about how your pension contributions will be hit from April 6th 2029, or you just want to plan now for your future tax and NIC liabilities, then join me for a free consultation. I can help you understand the impact of the salary sacrifice changes on your contractor take-home pay and individual circumstances.

Approver Quilter Financial Services Limited December 2025.