Auto-Enrolment Contributions, 3% Employer / 5% Employee Maths
- Atlas Tax
- 2 days ago
- 13 min read
Updated: 35 minutes ago
Auto-Enrolment Contributions: The 3% Employer / 5% Employee Maths Explained for 2026/27
The minimum auto-enrolment contribution in 2026/27 is 8% of an employee's qualifying earnings, split as at least 3% from the employer and 5% from the employee. Those percentages do not apply to a worker's full salary. They apply only to earnings between £6,240 and £50,270 per year, which is what "qualifying earnings" means in practice, and that distinction changes the real numbers considerably.
Most confusion I see from small employer clients comes from assuming the 5% and 3% work the same way as payroll tax rates. They do not. Getting this right matters both for cost budgeting and for avoiding underpayments that The Pensions Regulator can penalise.
What "Qualifying Earnings" Actually Means
The qualifying earnings band for 2026/27 runs from £6,240 at the bottom to £50,270 at the top. You calculate contributions on the slice of pay that falls within that band, not on the total gross wage.
So for an employee earning £28,000 a year, the qualifying earnings figure is £28,000 minus £6,240, which gives £21,760. The 8% minimum applies to that £21,760, not to the full £28,000.
Earnings that count within this band include basic salary, wages, bonuses, commission, overtime, statutory sick pay, and statutory maternity, paternity, and adoption pay. That last point catches employers out fairly often. If you are running payroll manually and excluding bonuses from the pension calculation, you may already be non-compliant without realising it.
The £6,240 lower limit and the £10,000 enrolment trigger are separate figures and serve different purposes. The £10,000 trigger determines whether a worker must be automatically enrolled at all. The £6,240 figure is purely the point from which contributions are measured once enrolment applies.
The Enrolment Trigger and the Contribution Band Are Not the Same Thing
An employee earning between £6,240 and £10,000 in 2026/27 does not have to be automatically enrolled, but they are entitled to opt in if they choose, and if they do, the employer must contribute. An employee earning exactly £10,001, by contrast, must be enrolled, but contributions still only apply on earnings above £6,240.
This creates a situation worth noting for businesses with part-time staff, seasonal workers, or workers on irregular hours, all of which are common in the Greater Manchester hospitality and retail sectors. An employee may dip above and below the £10,000 trigger in different pay periods. Employers need to assess eligibility at each pay reference period, not once at the start of employment.
The Actual Maths: Three Worked Calculations
The most practical way to understand these rules is to run through the numbers at different salary levels. I will use three common income points.
Employee Earning £22,000
Qualifying earnings: £22,000 minus £6,240 = £15,760
Employer contribution (3%): £472.80 per year / £39.40 per month Employee contribution (5%): £788 per year / £65.67 per month Total going into the pension: £1,260.80 per year
The employee's 5% contribution includes the 1% basic-rate tax relief the pension provider reclaims from HMRC under relief at source, which is the default method used by most auto-enrolment providers including NEST. The employee therefore actually pays 4% from their net pay and the government adds 1%. On £15,760 of qualifying earnings, the employee's direct cost is £630.40 per year. That is the figure most workers do not see clearly.
Employee Earning £35,000
Qualifying earnings: £35,000 minus £6,240 = £28,760
Employer contribution (3%): £862.80 per year / £71.90 per month Employee contribution (5%): £1,438 per year / £119.83 per month Total: £2,300.80 per year
A construction business in Bolton paying a site operative at this salary level is putting just under £863 into that worker's pension each year at minimum. When you have a small workforce of, say, six people all on similar wages, that is over £5,000 per year leaving the business before you have addressed any voluntary matching.
Employee Earning £50,270 or More
The qualifying earnings cap means contributions do not increase further once gross pay reaches £50,270. At the cap, qualifying earnings are £50,270 minus £6,240 = £44,030.
Employer minimum (3%): £1,320.90 per year Employee minimum (5%): £2,201.50 per year Total: £3,522.40 per year
For any employee earning, say, £65,000 or £90,000, the minimum auto-enrolment contribution is identical to the figures above. The excess above £50,270 is simply outside the calculation. Many employees and employers are genuinely surprised by this. It does not mean a higher earner is receiving proportionally less generous provision, but it does mean they are likely to need voluntary contributions above the minimum if a pension of meaningful size is the goal.
What this Widget is About: This interactive calculator takes the guesswork out of the UK’s 2026/27 auto-enrolment pension rules by showing exactly how your contributions are worked out. Many people wrongly assume that the 3% employer and 5% employee minimums apply to their entire wage, but this tool clearly illustrates how they only apply to a specific slice of your pay known as "qualifying earnings". To use the widget, simply type your gross annual salary into the input box or adjust the interactive slider to match your current income. As you change the numbers, the colour-coded bar instantly updates to reveal which part of your salary is excluded, whilst the calculation boxes below break down the exact monthly and yearly amounts you and your employer will pay. Whether you are a business owner budgeting for payroll or an employee planning for retirement, this visual guide will help you quickly understand the true value of your workplace pension.
The 1% Tax Relief Detail and Why the Method Matters
The statutory 5% employee contribution is described as including basic-rate tax relief. The reason for that phrasing matters.
Under a relief at source scheme, the employee pays contributions from net (post-tax) pay. The scheme provider claims basic-rate relief at 20% directly from HMRC and adds it to the pot. So the employee effectively contributes 4% of qualifying earnings from their own pocket and the government makes up the final 1%.
Under a net pay arrangement, contributions are deducted from gross pay before income tax is applied. The employee gets relief automatically because taxable pay is reduced. The employee's actual cash cost appears higher in the payslip, but they pay less income tax, so the net effect is broadly similar for taxpayers.
The important difference arises for employees who earn below the income tax personal allowance, which in 2026/27 remains at £12,570. Under a net pay arrangement, a worker who pays no income tax receives no pension top-up at all from the government, because there is no tax to relieve. HMRC introduced a top-up payment system from 2025 to address this, paying affected workers directly, but it operates on an annual basis and requires the individual to be identified.
If you run a scheme using net pay and you have low-paid workers, you need to be aware of this. The Pensions Regulator's guidance distinguishes between the two methods and your choice of scheme should take the make-up of your workforce into account.
Salary Sacrifice: A Third Route
Salary sacrifice is not a legal requirement of auto-enrolment, but it is increasingly offered alongside it as an alternative contribution method. Under a salary sacrifice arrangement, the employee agrees to reduce their contractual gross salary by the pension contribution amount, and the employer pays the equivalent into the pension directly. Because the employee's gross pay falls, both income tax and employee National Insurance are calculated on the lower figure.
For a basic-rate taxpayer, saving National Insurance at 8% in addition to income tax at 20% means the total benefit is 28% rather than the 20% available under relief at source.
The employer also saves at the employer National Insurance rate of 15% on the sacrificed amount. A business with several employees running salary sacrifice arrangements can accumulate a meaningful NI saving each year, and many employers pass some or all of it back into the pension as an enhanced contribution. If you have not discussed this with your payroll provider or accountant, it is worth raising.
The one caveat with salary sacrifice is that it reduces the employee's contractual salary, which can affect mortgage applications, redundancy calculations, and statutory payments based on average earnings. For employees close to a threshold for any of those purposes, the arrangement deserves a careful conversation before implementation.
Not Sure About Auto-Enrolment Contributions?
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Where Employers Commonly Go Wrong
Applying the Percentage to Full Gross Pay
The most common error in self-managed payrolls is calculating 3% and 5% on the entire gross wage rather than on qualifying earnings only. This will usually lead to over-contribution rather than under-contribution, but it distorts costs and can cause problems with the scheme's records if contributions are reconciled against declared qualifying earnings.
Not Updating Earnings Mid-Year
Qualifying earnings must be assessed at each pay reference period. A worker who is promoted, receives a bonus, or changes hours part-way through the year will have different qualifying earnings for different periods. The band applies to the actual pay in each period, converted to the relevant frequency. The Pensions Regulator publishes the weekly, fortnightly, four-weekly, and monthly equivalents of both the £6,240 lower limit and the £50,270 upper limit, and these should be applied in payroll software consistently.
For 2026/27, the monthly equivalent of the lower limit is £520 and the monthly upper limit is £4,189. These are the figures to apply in a monthly pay run.
The Director Question
Company directors can be tricky. A director who is also an employee has the same auto-enrolment duties applied to them as any other worker, subject to the earnings trigger. A sole director with no other employees is generally exempt from auto-enrolment entirely. But a director with one or more other employees who qualifies for enrolment must be assessed like any other worker, even if they are the majority shareholder.
Directors often pay themselves a low salary topped up with dividends. Dividends do not count as qualifying earnings for auto-enrolment purposes. Only PAYE salary elements count. A director on £12,000 salary and £40,000 dividends has qualifying earnings of £12,000 minus £6,240 = £5,760 for pension purposes, and contributions are based on that £5,760 even though the director's total income is substantially higher.
Opt-Outs and Re-Enrolment
An employee can opt out within the first month of enrolment and receive a full refund. After that window they can stop contributing but cannot recover previous deductions. Employers must re-enrol opted-out workers every three years and notify The Pensions Regulator via re-declaration of compliance. Missing the re-enrolment deadline is one of the more common small employer compliance failures, typically because the three-year cycle falls in a quiet year and no one flags it.
What this Widget is About: This interactive widget demystifies the UK’s auto-enrolment pension rules for the 2026/27 tax year, clearly showing how the minimum 3% employer and 5% employee contributions apply only to qualifying earnings between £6,240 and £50,270 rather than to full salary. It explains the key thresholds, the difference between the earnings trigger and the contribution band, tax-relief methods such as relief at source and salary sacrifice, and the common mistakes that can lead to under- or over-payments. Simply enter an annual gross salary into the calculator to see the precise qualifying earnings figure, the employer and employee amounts (both annual and monthly), and an estimate of the government tax relief. Worked examples at different pay levels, expandable sections and ready-reference tables for weekly, monthly and other pay frequencies make the rules easy to grasp. Created by Atlas Tax Advisors, the tool is designed to help UK taxpayers and employers budget accurately and stay fully compliant.
What the 8% Minimum Does Not Tell You
The statutory minimum is a floor, not a target. On average earnings of around £35,000, the 8% minimum produces a total annual contribution of just under £2,300. Across a working career, compound growth on contributions at that rate will not produce the level of retirement income most people picture when they plan. The widely cited benchmark from the Pensions and Lifetime Savings Association suggests a "moderate" retirement income in 2026 requires roughly £31,300 per year outside London, and the minimum auto-enrolment rates, even over a full career, fall materially short of that.
For employees who want a more informed view of their provision, and for employers who want to design a more competitive benefits package, the qualifying earnings method is worth replacing with a scheme based on total pensionable pay. Many providers allow this, and several employer-led schemes in sectors like professional services and financial advice in Greater Manchester have moved to total pay definitions precisely because they wanted the contribution rate to mean something more meaningful to staff.
The auto-enrolment rules set the legal minimum. They are not a pension plan.
Key Figures for 2026/27 at a Glance
Item | 2026/27 figure |
Earnings trigger (auto-enrolment threshold) | £10,000 per year |
Lower qualifying earnings limit | £6,240 per year |
Upper qualifying earnings limit | £50,270 per year |
Minimum employer contribution | 3% of qualifying earnings |
Minimum employee contribution | 5% of qualifying earnings (inc. 1% tax relief) |
Minimum total contribution | 8% of qualifying earnings |
Monthly lower qualifying earnings limit | £520 |
Monthly upper qualifying earnings limit | £4,189 |
These figures are unchanged from 2025/26. The DWP confirmed the thresholds would be held at 2023/24 levels for a further year. There is no confirmed change for 2027/28 at the time of writing, though the DWP reviews the thresholds annually and any change takes effect from 6 April of the relevant year.
Summary
Auto-enrolment at 3% employer and 5% employee is not a complicated calculation once you understand the qualifying earnings band correctly. The contributions apply to pay between £6,240 and £50,270, not to the whole wage. At a salary of £28,000, the qualifying earnings figure is £21,760 and the total minimum contribution is £1,740.80 per year. At a salary of £50,270 or above, contributions are capped at £44,030 of qualifying earnings regardless of how much above the upper limit the employee earns.
The method your scheme uses for tax relief matters, particularly for low-paid workers on net pay arrangements. Salary sacrifice, where an employer offers it, is the most tax-efficient approach for both parties. Opt-outs and the three-year re-enrolment obligation are the most commonly missed compliance points in smaller businesses. And for anyone who takes the 8% minimum as adequate retirement provision, the maths over a career suggests otherwise.
FAQs
Q1: Can someone work out the 3% employer and 5% employee pension amounts using gross pay?
A1: Well, it is worth noting that the legal minimum is usually worked out on qualifying earnings, not simply on every pound of gross pay. For the 2025/26 tax year, the standard qualifying-earnings band runs from £6,240 to £50,270 a year, and the default minimum contribution is 8% in total, made up of at least 3% from the employer and 5% from the worker. That is why a payslip can look slightly lower than someone expects if they have only checked salary rather than the qualifying-earnings band.
Q2: Can someone still be auto-enrolled if their pay goes up and down each month?
A2: Yes. In my experience with clients, fluctuating pay is exactly where payroll mistakes creep in. The Pensions Regulator says contributions must be assessed each pay period, so a worker with overtime one month and a quieter next month can see their pension deductions rise and fall with earnings. That is normal, not an error by itself.
Q3: Can someone be enrolled if they earn less than £10,000 but still want a workplace pension?
A3: Yes, and this is a useful gap people often miss. The automatic-enrolment trigger is generally £10,000 a year, but workers below that level can still ask to join, and employers must usually contribute for people who opt in and meet the scheme rules. I have seen part-time retail staff and delivery-office assistants lose out simply because nobody told them they could join voluntarily.
Q4: Can someone opt out and get their pension money back straight away?
A4: Yes, but only within the opt-out window. If someone opts out within one month of being enrolled, they are usually entitled to a refund of their own contributions, and the employer must refund anything deducted. After that month, the money normally stays in the pension until retirement. That timing catches people out more often than you might think.
Q5: Can someone have more than one workplace pension if they have multiple jobs?
A5: Absolutely. Each employer checks the worker’s pay separately, not the total from all jobs combined. So a person with two part-time jobs could end up with two separate workplace pensions, or only one, depending on each job’s earnings. A common pitfall is assuming the income from Job A stops Job B from auto-enrolling; it does not work like that.
Q6: Can someone’s employer use basic pay only and ignore overtime or bonuses?
A6: Sometimes yes, but only if the scheme rules allow a different pensionable-pay basis. The Pensions Regulator explains that some schemes calculate contributions on pensionable pay rather than qualifying earnings, and pensionable pay may exclude overtime, bonuses or commission. So the key is to check the scheme’s rules rather than assume every payment is included.
Q7: Can someone on a zero-hours or agency arrangement still be auto-enrolled?
A7: Yes. A zero-hours pattern does not automatically stop auto-enrolment, and agency workers can also be entitled to pension enrolment through the agency. The deciding factor is whether they meet the relevant age and earnings conditions in the job, not whether the hours are fixed. I have seen this go wrong where an agency assumed “irregular hours” meant “no pension duty”, which is not safe.
Q8: Can someone check whether 3% employer and 5% employee is being applied to the right amount?
A8: Yes, and this is one of the smartest payroll checks a worker can do. The first thing to verify is whether the employer is using qualifying earnings, pensionable pay, or a different scheme basis, because those methods produce different numbers even when the headline 3% and 5% sound the same. A worker in Birmingham once queried a “missing” contribution, only to discover the scheme was correctly using pensionable pay that excluded commission.
Q9: Can someone ask for auto-enrolment before the normal age threshold if they are younger?
A9: Yes. Automatic enrolment usually starts at age 22, but MoneyHelper says a worker can ask to join from age 16, and employers may need to contribute if the other conditions are met. That is particularly relevant for apprentices and younger part-time staff who think pensions are “not for them yet”.
Q10: Can someone’s pension deductions be wrong if salary sacrifice is used?
A10: Yes, they can be, which is why this needs careful checking. Salary sacrifice changes the amount treated as pensionable pay and also affects pay for tax and National Insurance, so the maths can look different from a simple “3% plus 5% of salary” calculation. In practice, the right approach is to check the payroll basis first and then confirm whether the scheme is using qualifying earnings or a salary-sacrifice structure.
Disclaimer
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