Employer pension contributions: the full guide
Every UK employer must pay at least 3% of an eligible worker's qualifying earnings into a workplace pension, and those earnings are the slice of pay between £6,240 and £50,270 for the 2026-27 tax year [1]. Because employer contributions are usually an allowable business expense, they reduce a company's taxable profit as well [4].
Employer pension contributions are a legal duty for some workers, a tax-efficient reward for others, and a compliance risk when they are paid late or calculated on the wrong figure. The rules sit across auto-enrolment law, the corporation tax code, and National Insurance treatment, which is why they are easy to get partly wrong.
This article sets out what the law requires an employer to pay, how those contributions are taxed, how salary sacrifice changes the National Insurance position, the deadlines for handing money to the scheme, and the specific case of company directors paying through their own business.
Key takeaways
- Employers must pay at least 3% of qualifying earnings for eligible jobholders.
- The total minimum contribution is 8%, with the employee funding the balance.
- Employer contributions are usually deductible against corporation tax.
- Salary sacrifice can cut an employer's National Insurance bill on the sacrificed pay.
- Contributions must reach the scheme by the 22nd of the following month if paid electronically.
- A salary sacrifice National Insurance reform takes effect from 6 April 2029.
What the law requires employers to pay
Auto-enrolment law sets a floor, not a ceiling. The statutory minimum total contribution is 8% of qualifying earnings, of which the employer must fund at least 3% [1]. The employee makes up the difference, including the tax relief the government adds [2].
Paying below the statutory minimum is a breach of the employer duty, and The Pensions Regulator can respond with compliance notices, unpaid-contribution notices and escalating penalties [2]. Getting the base figure right is therefore the first control every payroll needs.
The 3% minimum and qualifying earnings
The employer contribution is calculated on qualifying earnings, not on full salary. Only the band between £6,240 and £50,270 counts, so the maximum qualifying earnings figure for the 2026-27 tax year is £44,030 [1]. Pay below the lower limit and above the upper limit is excluded from the calculation entirely [8].
The statutory split between the employer, the employee and tax relief is fixed at the minimum, though many employers choose to pay more than 3% as a recruitment benefit [10].
| Contribution | Minimum rate | Basis |
|---|---|---|
| Employer | 3% | Qualifying earnings |
| Employee (including tax relief) | 5% | Qualifying earnings |
| Total | 8% | Qualifying earnings |
An employer can also certify an alternative basis that measures pay differently, provided the resulting contribution meets a quality test. The detail of the band sits in the guide to qualifying earnings, which every payroll administrator should read before the first run.
Who the employer must contribute for
The duty to contribute attaches to eligible jobholders: workers aged 22 or over but under State Pension age who earn above the £10,000 earnings trigger [2]. These workers are enrolled automatically and the employer must contribute from the first qualifying pound [1].
The duty also extends to non-eligible jobholders who choose to opt in, and those workers attract the same minimum employer contribution as anyone auto-enrolled [8]. The mechanics of who falls into which category are covered in the guide to auto-enrolment, and the assessment must be run every pay period because a worker can move between categories as their pay changes [2].
How employer contributions are taxed
Employer pension contributions carry a double tax advantage that direct salary does not. They are not treated as a benefit in kind, so the employee pays no income tax or National Insurance on them, and the employer can usually deduct them against corporation tax [4]. This is what makes an employer contribution a more efficient reward than the equivalent gross salary [1].
There is a timing rule attached. A contribution is only deductible in the accounting period in which it is actually paid, with cleared funds, so an accrued but unpaid liability does not qualify [4]. Where employer contributions rise sharply from one period to the next, HMRC may require the relief to be spread across several years rather than taken in one [4].
The wholly and exclusively test
Corporation tax relief on employer contributions is not automatic. The contribution must be paid wholly and exclusively for the purposes of the employer's trade, the same test applied to other staff costs [4]. For ordinary employees this is rarely in doubt, because pension contributions form part of the cost of employing them [4].
The test becomes relevant for director-shareholders, where HMRC looks at whether the total remuneration package is commercially justifiable [4]. A contribution that is reasonable as part of the overall reward for the work done will normally pass, which is why most owner-managed businesses can contribute for their directors without difficulty [1].
Salary sacrifice and employer National Insurance
Salary sacrifice changes how a pension contribution is routed and, with it, the National Insurance position. Under the arrangement the employee gives up part of their gross salary in exchange for a larger employer pension contribution, which reduces the pay on which both parties calculate National Insurance [5].
The employer saving is material. With employer National Insurance charged at 15% on earnings above the Secondary Threshold, every pound sacrificed removes 15p of employer National Insurance, a point worth reading alongside the guide to employer National Insurance [5]. The table below shows the employer National Insurance saved on different sacrificed amounts.
| Salary sacrificed | Employer NI rate | Employer NI saved |
|---|---|---|
| £2,000 | 15% | £300 |
| £5,000 | 15% | £750 |
| £10,000 | 15% | £1,500 |
Many employers pass some or all of this saving back into the employee's pension, increasing the pot at no extra cost to the business. The full mechanics sit in the guide to the salary sacrifice pension.
The 2029 reform
This position changes from 6 April 2029. A reform confirmed by the government removes the National Insurance exemption on salary-sacrificed pension contributions above £2,000 a year [5]. Sacrificed amounts above that cap will attract Class 1 National Insurance for both the employee and the employer [5].
The first £2,000 of sacrifice keeps its exemption, so an estimated majority of workers making typical contributions will be unaffected [5]. Higher earners and those sacrificing large sums will see the National Insurance advantage capped, which employers running generous schemes will need to model before the change takes effect [5].
Paying contributions on time
Deducting a contribution is only half the duty. The employer must then pay it across to the pension scheme by a statutory deadline, and late payment is itself a breach [6]. The deadline depends on the payment method.
| Payment method | Deadline |
|---|---|
| Electronic transfer | 22nd of the month after deduction |
| Cheque | 19th of the month after deduction |
If contributions are 90 days or more overdue, the scheme trustees or provider must report the employer to The Pensions Regulator [6]. Persistent late payment can lead to fines and, in the most serious cases, legal action [7]. Because the deduction and the remittance are separate events, HMRC-recognised payroll software that tracks both against the deadline removes a common source of accidental breach.
Employer contributions for company directors
A director paying pension contributions through their own limited company gains an advantage that ordinary personal contributions do not offer. Personal contributions are capped at 100% of relevant earnings, but a company contribution is not tied to the director's salary, so a director drawing a low salary of £12,570 can still have the company contribute far more [4].
The contribution is limited instead by the annual allowance, which stands at £60,000 for the 2026-27 tax year, with the option to carry forward unused allowance from the previous three tax years [9]. A company contribution avoids income tax, employee National Insurance and dividend tax, and reduces the company's corporation tax bill, provided it passes the wholly and exclusively test [4]. This is why paying into a pension from the business is often more efficient for a director than drawing the same sum as salary or dividends, a point that matters to many businesses running payroll for SMEs.
Conclusion
Employer pension contributions sit at the intersection of three separate rulebooks. Auto-enrolment law sets the 3% floor and the deadline for handing money to the scheme, the corporation tax code decides whether the contribution reduces taxable profit, and National Insurance treatment determines whether salary sacrifice adds a further saving. An employer that treats these as one process rather than three is the one most likely to get all of them right.
The base rules are stable for the 2026-27 tax year, but the salary sacrifice reform from 6 April 2029 is a signal that the National Insurance advantage of pension contributions is under review. Employers building generous schemes today have a window to model the change, and the ones that automate the assessment, the calculation and the remittance deadline will absorb it with the least disruption.
Frequently asked questions
How much do employers have to pay into a workplace pension?
The statutory minimum employer contribution is 3% of an eligible worker's qualifying earnings, which are the band of pay between £6,240 and £50,270 for the 2026-27 tax year [1]. The total minimum contribution is 8%, so the employee funds the remaining 5% including government tax relief [2]. Employers can choose to pay more than 3%.
Are employer pension contributions tax deductible?
Usually, yes. Employer contributions to a registered pension scheme are normally an allowable business expense, so they reduce the company's taxable profit and its corporation tax bill [4]. Relief is given in the accounting period the contribution is actually paid, and it must meet the wholly and exclusively test [4].
When must an employer pay pension contributions to the scheme?
Contributions must reach the pension scheme by the 22nd of the month following deduction if paid electronically, or the 19th if paid by cheque [6]. If payment is 90 days or more overdue, the scheme must report the employer to The Pensions Regulator, which can issue fines for persistent failure [7].
Does salary sacrifice reduce an employer's National Insurance?
Yes. Because salary sacrifice reduces the employee's gross pay, it also reduces the pay on which the employer calculates National Insurance, currently charged at 15% above the Secondary Threshold [5]. From 6 April 2029, sacrificed pension contributions above £2,000 a year will lose this exemption and attract Class 1 National Insurance for both parties [5].
