With personal taxation and rising costs continuing to influence financial planning decisions, many employees are looking more closely at how they can make the most of their earnings and pension contributions. For those with access to a salary sacrifice pension scheme, one option may be to exchange part of their salary for an employer pension contribution.
Depending on your circumstances and the scheme offered by your employer, salary sacrifice can provide a tax-efficient way to contribute towards retirement. By reducing the salary on which certain deductions are calculated, it may reduce the amount you pay in Income Tax and National Insurance while directing more money towards your pension.
However, salary sacrifice is not automatically the right choice for everyone. It can affect more than your monthly pay packet, with potential implications for benefits, borrowing and other areas of your finances.
In this guide, we will explain how salary sacrifice pensions work, explore the potential savings with practical examples and highlight the important points to consider before deciding whether it could be suitable for you.
What is a salary sacrifice pension?
A salary sacrifice pension is an arrangement between you and your employer that changes the way pension contributions are made. You agree to give up part of your contractual salary, and your employer pays an equivalent amount directly into your pension instead.
For example, if you earn £60,000 a year and agree to sacrifice £5,000, your contractual salary would usually reduce to £55,000, with your employer paying the £5,000 into your pension. As your salary is lower, the amount of earnings subject to Income Tax and National Insurance may also be reduced.
This differs from making an ordinary employee pension contribution. With a standard contribution, you receive your salary and make a pension contribution from it, with tax relief applied according to the type of pension scheme. With salary sacrifice, you give up the agreed amount of salary before it is paid to you and the pension contribution is made by your employer.
Salary sacrifice therefore changes both your contractual pay and the way money reaches your pension. This distinction is important because it is what creates the potential National Insurance advantages that we will explore later in this guide.
How can a salary sacrifice pension affect your take-home pay?
At first glance, giving up part of your salary might seem as though it would reduce your take-home pay by exactly the same amount. However, this is not usually how salary sacrifice works.
When you sacrifice part of your salary in exchange for an employer pension contribution, the agreed amount is taken from your gross salary before Income Tax and employee National Insurance are calculated. As a result, you may pay less of both.
This means that sacrificing £100 of gross salary does not necessarily leave you £100 worse off in your monthly take-home pay. Part of that £100 may otherwise have been lost through tax and National Insurance, so the actual reduction in the amount reaching your bank account may be lower.
The precise effect will depend on factors including your earnings, tax position and the terms of your employer’s salary sacrifice pension scheme. However, the principle is relatively simple: more of the money that would otherwise have formed part of your taxable salary can instead be directed towards your pension.
Later in this guide, we will look at some worked examples to show how this can affect both take-home pay and pension contributions in practice.
How can salary sacrifice increase pension contributions?
Salary sacrifice can also provide an opportunity to increase the amount being paid into your pension without necessarily increasing the cost to you by the same amount.
As we have seen, sacrificing part of your gross salary may reduce the Income Tax and National Insurance you pay. This can make salary sacrifice a more efficient way of directing money towards your pension than simply contributing the same amount from your take-home pay.
There may also be an additional benefit. Employers pay National Insurance on employees’ salaries, so reducing your contractual salary can lower your employer’s National Insurance bill as well. Some employers choose to pass some or all of this saving on by adding it to the employee’s pension contribution.
They are not required to do this, however, and the way salary sacrifice schemes operate varies between employers. It is therefore important to understand the terms of your particular scheme before assessing the potential benefit.
Where an employer does share its National Insurance saving, the result can be particularly valuable: a greater amount may reach your pension without requiring an equivalent reduction in your take-home pay.
Tax and National Insurance savings explained
The potential tax advantages of a salary sacrifice pension come from reducing the amount of salary you receive in exchange for an employer pension contribution.
As the sacrificed amount does not form part of your taxable salary, it can reduce the Income Tax and employee National Insurance payable on your earnings.
For the 2026/27 tax year, most employees in England, Wales and Northern Ireland pay Income Tax at 20% on income within the basic-rate band and 40% within the higher-rate band.
Useful reference: Income Tax rates and allowances for current and previous tax years
Employee National Insurance is generally charged at 8% on earnings between the primary threshold and upper earnings limit, falling to 2% on earnings above this level.
The amount you could save will depend partly on the rate of Income Tax and National Insurance you would otherwise pay on the salary you sacrifice. For example, someone paying higher-rate Income Tax may make a greater tax saving on the same amount of sacrificed salary than someone paying the basic rate.
Employers can also benefit because employer National Insurance is generally charged at 15% on earnings above the relevant threshold.
Useful reference: Rates and thresholds for employers 2026-2027
Reducing an employee’s contractual salary can therefore reduce the employer’s National Insurance liability. As explained earlier, some employers choose to add some or all of this saving to the employee’s pension, although they are not required to do so.
It is important to distinguish salary sacrifice from making a personal pension contribution and claiming tax relief.
Under salary sacrifice, the employee gives up part of their salary and the employer makes the pension contribution instead. The tax advantage therefore arises through the reduction in taxable salary rather than through the employee subsequently claiming tax relief on the sacrificed amount.
Tax rates, thresholds and individual circumstances can vary, so the actual savings will depend on your earnings, tax position and the terms of your employer’s scheme.
What could salary sacrifice look like in practice?
Sometimes the easiest way to understand salary sacrifice is to see what happens to the money. The following simplified examples use 2026/27 Income Tax and National Insurance rates for employees in England, Wales and Northern Ireland. Actual savings will depend on individual circumstances.
Example 1: A basic-rate taxpayer
Maria earns £40,000 a year and decides to sacrifice £4,000 of her salary into her pension.
If taken as salary, that £4,000 would incur approximately £800 in Income Tax and £320 in employee National Insurance. So in reality, only around £2,880 of that £4,000 would actually reach Maria’s take-home pay.
This means that Maria gets £4,000 extra paid into her pension, but only loses around £2,880 in take-home pay.
Example 2: A higher-rate taxpayer
James earns £60,000 a year and decides to sacrifice £5,000 of his salary into his pension.
If James received that £5,000 as salary, approximately £2,000 would be deducted in Income Tax and £100 in employee National Insurance. This would leave him with around £2,900 in take-home pay.
Instead, James sacrifices the £5,000 and his employer pays that amount into his pension.
James may have sacrificed £5,000 of his salary towards his future retirement, but in reality, he is only giving up approximately £2,900 of take-home pay.
| Maria | James | |
| Original salary | £40,000 | £60,000 |
| Salary sacrificed | £4,000 | £5,000 |
| New contractual salary | £36,000 | £55,000 |
| Approximate reduction in take-home pay | £2,880 | £2,900 |
| Amount paid into pension | £4,000 | £5,000 |
| Difference | £1,120 | £2,100 |
The examples above do not include any additional contribution an employer might choose to make from its own National Insurance saving. If an employer passes some or all of this saving into the pension, the amount contributed could be higher.
These are simplified illustrations rather than personalised calculations. The actual effect of salary sacrifice will depend on factors including your earnings, tax position and the terms of your employer’s scheme.
Salary sacrifice is not right for everyone
Although a salary sacrifice pension can offer valuable tax and National Insurance advantages, it is important to consider the wider implications before deciding whether it is suitable for you.
Some of the key points to consider include:
- Your contractual salary: Salary sacrifice reduces your contractual pay. This may be relevant where your salary is used to calculate other financial entitlements or benefits.
- National Minimum Wage: Salary sacrifice cannot reduce an employee’s cash earnings below the applicable National Minimum Wage or National Living Wage rate.
- Mortgages and other borrowing: Some lenders may consider your reduced contractual salary when assessing affordability, although lending criteria vary. If you are planning to apply for a mortgage or other significant borrowing, it may be worth checking how salary sacrifice could be treated.
- Statutory payments and benefits: A lower salary can potentially affect earnings-related entitlements, such as Statutory Maternity Pay and Statutory Paternity Pay, depending on your circumstances and level of earnings.
- Employer-specific rules: Not every employer offers salary sacrifice, and schemes can operate differently. For example, some employers may calculate certain workplace benefits using your original salary before sacrifice, while others may use your reduced salary.
It is therefore important to look beyond the immediate tax and National Insurance savings. The value of salary sacrifice should be considered in the context of your overall remuneration, workplace benefits and wider financial circumstances.
Salary sacrifice pension rules are changing from April 2029
The National Insurance advantages of pension salary sacrifice are due to change from 6 April 2029. Under the new rules, only the first £2,000 of employee pension contributions made through salary sacrifice each year will be exempt from National Insurance.
Salary sacrifice contributions above this amount will still be possible, but both employee and employer National Insurance will apply to the amount above £2,000. The contributions will continue to be exempt from Income Tax, subject to the usual pension tax rules and limits.
Employer pension contributions made outside a salary sacrifice arrangement will continue to be exempt from National Insurance.
These changes do not affect the 2026/27 examples in this guide, which are based on the rules currently in force. However, anyone considering salary sacrifice as part of a longer-term pension strategy should be aware that its National Insurance advantages are scheduled to become more limited from 6 April 2029.
Further reading on the forthcoming changes to salary sacrifice pensions from April 2029
Salary sacrifice as part of wider financial planning
Salary sacrifice can be an effective way to increase pension contributions, but maximising the amount paid into a pension is not necessarily the right priority for everyone.
Money contributed to a pension is generally intended to fund later life and cannot usually be accessed until the relevant minimum pension age is reached.
It is therefore important to consider how increased pension contributions fit alongside your current income needs, accessible savings and investments, family commitments and other financial objectives.
Your wider tax position and existing pension savings may also influence how much it is appropriate to contribute. Pension allowances and tax rules can change, making it important to consider salary sacrifice as part of a broader financial strategy rather than in isolation.
A structured approach to retirement planning can help you consider how pension contributions support the lifestyle and income you want in later life. For those with more complex financial circumstances, integrating pension decisions into a wider wealth management strategy can also help ensure that different elements of your finances continue to work together towards your long-term objectives.
Making a salary sacrifice pension work for your wider financial goals
Salary sacrifice can offer an effective way to direct more of your earnings towards retirement while potentially reducing the Income Tax and National Insurance you pay. For some employees, the benefits may be enhanced further if their employer chooses to add some or all of its own National Insurance saving to their pension.
However, the potential tax savings are only part of the picture. Your current and future income needs, pension savings, workplace benefits and wider financial objectives should all be considered before deciding whether salary sacrifice is appropriate for you.
Understanding both the advantages and the potential drawbacks can help you assess how salary sacrifice might fit into your wider retirement strategy, while regular reviews can ensure your approach continues to reflect your circumstances and changes to pension and tax rules.
Considering salary sacrifice as part of your retirement planning? Talk to Partridge Muir & Warren.
Deciding how much to contribute towards your pension involves balancing your plans for later life with your financial priorities today.
At Partridge Muir & Warren, we help individuals and families take a considered approach to retirement and wider financial planning. By looking at pensions alongside investments, income needs, tax considerations and long-term objectives, we can help you understand how different financial decisions work together.
If you would like to explore whether salary sacrifice could form part of your wider retirement strategy, get in touch with PMW to discuss your circumstances and long-term financial goals.
Related retirement and pension guides
If you are planning for retirement or looking to make more of your pension savings, you may also find our related guides helpful:
- Early retirement planning: A complete overview
- How to plan for retirement in your 20s and 30s
- How inflation can affect your retirement planning
- Retirement planning for couples: Strategies for success
- Everything you need to know about pension tax relief
- How much money do you need to retire in the UK?
- Five ways to maximise your retirement savings
- Pension drawdown vs annuity