Workplace Pension Auto-Enrolment for UK Limited Companies: The Complete Guide

Every UK employer must offer a workplace pension. Not eventually. Not once they hit a certain headcount. From the very first payday. The Pensions Regulator (TPR) has issued over 40,000 compliance notices and fixed penalties since auto-enrolment rolled out, and the companies caught most often are not rogue operators — they are small limited companies whose founders simply did not realise the obligation existed.

If you have already registered for PAYE, you are most of the way there. But PAYE registration and pension auto-enrolment are two separate duties, enforced by two different regulators — HMRC and The Pensions Regulator respectively — with two different penalty regimes. Miss one and the other will not catch it for you.

This guide covers everything a UK founder needs to know: who must be enrolled, how much you must contribute, how to choose a scheme, the penalties for getting it wrong, and how auto-enrolment fits alongside your director salary and dividend strategy.

What is workplace pension auto-enrolment?

Auto-enrolment is the legal requirement for every UK employer to automatically enrol eligible workers into a qualifying workplace pension scheme and make minimum contributions. It was introduced by the Pensions Act 2008 and phased in between 2012 and 2018. Today, every employer — regardless of size — has these duties from the moment they first employ someone.

The idea is simple: workers are enrolled by default and must actively opt out if they do not want to participate. Behavioural economics in action. The practical consequence for founders is that you need a pension scheme in place before your first payday, not after.

Who must be auto-enrolled? The three worker categories

Not every worker triggers identical duties. The Pensions Act splits workers into three categories based on age and earnings. Understanding these categories tells you exactly what you owe.

Eligible jobholders — automatic enrolment is mandatory

A worker is an eligible jobholder if they meet all three conditions:

• Aged between 22 and State Pension age
• Earning more than £10,000 per year (the auto-enrolment earnings trigger)
• Ordinarily working in the UK

You must automatically enrol these workers into your pension scheme and start making contributions from their first qualifying payday. There is no discretion here — it is a strict legal duty.

Non-eligible jobholders — they can opt in

Workers who fall just outside the eligible category — either because they are aged 16–21 or State Pension age to 74 and earn above £10,000, or they are aged 22 to State Pension age but earn between £6,240 and £10,000 — are non-eligible jobholders. You do not have to auto-enrol them, but if they ask to join, you must let them in and pay employer contributions.

Entitled workers — they can opt in, but you need not contribute

Workers aged 16 to 74 who earn below £6,240 per year are entitled workers. If they ask to join your pension scheme, you must provide access, but you are not legally required to make employer contributions for them.

Director-only companies: do you need a pension scheme?

This is the question that trips up the largest number of founder-directors. The answer depends on whether the director has an employment contract.

A sole director with no contract of employment is not a “worker” for auto-enrolment purposes, even if they draw a salary through PAYE. In that scenario, auto-enrolment duties do not apply. Many single-director companies fall into this category — the director takes a small salary below the National Insurance threshold and tops up with dividends. No employment contract, no auto-enrolment duty.

However, if the director does have a contract of employment (even one they wrote themselves), they become a worker, and the normal auto-enrolment rules apply based on their age and earnings. The same logic applies to any company with multiple directors who have employment contracts.

The practical takeaway: if you are a sole director paying yourself a small PAYE salary with no written employment contract, you likely have no auto-enrolment duties. The moment you hire someone else — even a part-time assistant — the duties kick in and you need a scheme.

How much must you contribute? Minimum rates explained

Since 6 April 2019, the minimum contribution rates have been:

• Employer minimum: 3% of qualifying earnings
• Employee minimum: 5% of qualifying earnings (including tax relief)
• Total minimum: 8% of qualifying earnings

Contributions are calculated on qualifying earnings — the slice of gross pay that falls between the lower limit of £6,240 and the upper limit of £50,270 per year. These thresholds are reviewed annually by the government. Qualifying earnings include salary, wages, bonuses, commission, overtime, and statutory payments such as sick pay, maternity pay, and paternity pay.

A worked example

Suppose you pay an employee £30,000 per year. Their qualifying earnings are £30,000 minus £6,240 = £23,760. The minimum employer contribution is 3% of £23,760 = £712.80 per year (£59.40 per month). The employee’s share is 5% = £1,188 per year. Together, that is £1,900.80 — the 8% total minimum.

You are free to contribute more than the minimum. Many employers match higher contributions as a benefit to attract talent. But the legal floor is the 3% employer share.

No employer contribution below the earnings threshold

If a worker earns £520 per month or less (£120 per week, £6,240 per year), you are not required to make employer contributions even if they opt into the scheme.

Setting up auto-enrolment: the six-step process

Whether you are hiring your first employee or you have just incorporated and plan to pay yourself a salary under an employment contract, the process follows six steps.

1. Identify your duties start date. This is the date your first member of staff starts work (or the date a director with an employment contract first earns qualifying earnings). It is not the date you registered for PAYE or the date you incorporated — it is the first day someone becomes a worker for your company.
2. Choose a qualifying pension scheme. The scheme must meet the auto-enrolment quality requirements set by The Pensions Regulator. NEST (National Employment Savings Trust) is the government-backed default that cannot refuse any employer — but there are alternatives (more on this below).
3. Assess your workers. Categorise each worker as an eligible jobholder, non-eligible jobholder, or entitled worker based on their age and earnings.
4. Enrol eligible jobholders. Add them to the pension scheme and start deducting contributions from their pay. You must write to each enrolled worker within six weeks of their enrolment date, telling them which scheme they have been enrolled into, how much you and they will contribute, and how to opt out.
5. Set up contribution payments. Pay contributions to the scheme on time — usually by the 22nd of each month (or the 19th if paying by cheque). Late payments are a compliance failure even if enrolment itself was on time.
6. Complete your declaration of compliance. You must submit this to The Pensions Regulator within five months of your duties start date. It confirms you have met your auto-enrolment obligations. Missing this deadline is itself an offence, even if you have done everything else correctly.

Choosing a pension scheme for your company

You need a scheme that meets TPR’s qualifying criteria. The main options are:

• NEST (National Employment Savings Trust) — the government-backed scheme. It must accept every employer, charges no setup fees, and is straightforward for small companies. The drawback: limited investment fund choices and a contribution charge structure that some employees dislike (currently 1.8% on contributions plus 0.3% annual management charge).
• The People’s Pension — a popular alternative with a simpler fee structure (typically a flat annual management charge with no contribution charge). Widely used by small and medium businesses.
• NOW: Pensions — another large auto-enrolment provider with competitive charges and an easy employer portal.
• Smart Pension, Aviva, Royal London, Scottish Widows — various providers offering schemes tailored to different company sizes and needs. Some require minimum employee numbers.

For most founder-led limited companies with fewer than 50 employees, NEST or The People’s Pension are the simplest and cheapest choices. If you use payroll software (Xero, Sage, FreeAgent, BrightPay), check which pension providers integrate directly — it saves hours of manual uploads.

Postponement: buying yourself up to three months

If you are not ready on your duties start date — perhaps you have not chosen a scheme yet — you can use a postponement period of up to three months. You must write to affected workers within six weeks of the postponement start date, explaining the delay and when they will be enrolled. At the end of the postponement period, you must assess and enrol any eligible jobholders. Postponement delays the obligation; it does not remove it.

Common mistakes that trigger fines

The Pensions Regulator is not a passive watchdog. It actively monitors employer compliance using PAYE data from HMRC and will contact you directly if it believes you are falling short. Here are the mistakes we see most often:

1. Not knowing you have duties. Many founders assume auto-enrolment only applies to “big companies.” It applies to every employer — including a limited company with one part-time employee earning above the trigger.
2. Missing the declaration of compliance. You set up the scheme, enrolled the workers, paid contributions — then forgot to tell TPR. The declaration is a separate requirement with its own five-month deadline, and missing it is an offence regardless of whether you did everything else right.
3. Late contribution payments. Contributions must reach the pension provider by the 22nd of each month. It is not enough to deduct them from payroll — they must actually be paid across. Some founders deduct contributions from employee pay but forget (or delay) transferring the money to the scheme. That is a compliance breach.
4. Enrolling workers but not writing to them. The enrolment letter is a legal requirement, not a courtesy. It must be sent within six weeks and must include specific information about the scheme, contributions, and opt-out rights.
5. Forgetting re-enrolment. Workers who opted out must be re-assessed and re-enrolled approximately every three years. If you enrolled workers in 2023, your first re-enrolment duty lands in 2026.
6. Encouraging opt-outs. It is unlawful for an employer to encourage, induce, or coerce a worker to opt out of auto-enrolment. Even a casual “you don’t have to stay in, you know” during onboarding can constitute a breach.

Penalties for non-compliance

The Pensions Regulator has real enforcement powers. Penalties escalate from warnings to fines that can run into thousands of pounds per day:

• Compliance notice — a formal instruction to take specific action (e.g. set up a scheme, enrol workers) within a set deadline. Ignoring it leads to penalties.
• Fixed penalty notice: £400 — issued if you fail to comply with a compliance notice. This is per notice, not per worker.
• Escalating daily penalty — if you still do not comply after the fixed penalty, TPR can impose daily fines based on your company size:
  • 1–4 workers: £50 per day
  • 5–49 workers: £500 per day
  • 50–249 workers: £2,500 per day
  • 250+ workers: £10,000 per day
• Unpaid contributions notice — TPR can require you to pay any contributions you should have made but did not, including the employer share.
• Prohibited recruitment conduct penalty — if you make job offers conditional on opting out, or penalise workers for staying enrolled, TPR can impose additional fines up to £5,000 (for individuals) or £50,000 (for organisations).

For a four-person company that ignores a compliance notice for 60 days after the fixed penalty, the total bill comes to £400 + (60 × £50) = £3,400 — before unpaid contributions are added. That is more than most small employers would spend on pension contributions in an entire year.

Re-enrolment: the three-year cycle most founders forget

Auto-enrolment is not a one-off task. Approximately every three years from your original duties start date, you must re-assess your workforce and re-enrol any eligible jobholders who previously opted out or left the scheme. This is called the re-enrolment duty.

You choose a re-enrolment date within a six-month window — from three months before to three months after the third anniversary of your original staging date. On that date, you must:

1. Identify any workers who opted out or ceased membership and are still eligible jobholders.
2. Put them back into the pension scheme (they can opt out again if they wish).
3. Write to each re-enrolled worker within six weeks.
4. Complete a re-declaration of compliance with TPR.

The re-declaration must be completed even if no one needs re-enrolling. It confirms you assessed your duties. Missing it is a compliance failure.

How auto-enrolment fits your director pay strategy

Most founder-directors of UK limited companies pay themselves a combination of a small salary and dividends. The salary is typically set at or just above the National Insurance Lower Earnings Limit to preserve the State Pension qualifying year without triggering employee NI. In the 2026/27 tax year, many directors set their salary around £12,570 (the personal allowance).

At £12,570, a director with an employment contract earns above the £10,000 auto-enrolment trigger. That means auto-enrolment duties apply. However, qualifying earnings would only be £12,570 minus £6,240 = £6,330, making the employer contribution just 3% of £6,330 = £189.90 per year. It is a small cost, but it is still a legal obligation if an employment contract exists.

The simpler route for many sole directors: do not have an employment contract. A director can be appointed under the company’s Articles of Association without a separate contract of employment. In that case, they are an officeholder, not a worker, and auto-enrolment does not apply. You can still make voluntary pension contributions through a personal pension (SIPP) and claim Corporation Tax relief on employer contributions — often a more tax-efficient approach.

For a fuller breakdown of optimising your director pay, see our guide on how to pay yourself as a UK company director.

Opting out and refunds

Any worker who is auto-enrolled has the right to opt out within one month of their enrolment date. If they opt out within this window, all contributions (both employer and employee) are refunded as if enrolment never happened. After the one-month window, a worker can still leave the scheme, but contributions already made are not refunded — they remain in the pension pot.

As an employer, you must not process an opt-out until you receive a valid opt-out notice from the worker. You cannot pre-emptively exclude someone or accept a verbal opt-out. The notice must come in the prescribed form, typically generated through the pension provider’s system.

Record-keeping obligations

Auto-enrolment creates record-keeping duties that sit alongside your company statutory registers. You must keep records of:

• The names and addresses of every worker enrolled (or who opted out)
• Dates of enrolment, opt-out notices, and contribution payments
• The pension scheme details and evidence the scheme qualifies
• Copies of all enrolment and opt-out communications sent to workers

These records must be kept for six years (four years for opt-out records). TPR can request them at any time during an investigation, and failure to produce them is a compliance breach.

Frequently asked questions

Does a sole director with no employees need a workplace pension?

Not if the director has no contract of employment. A sole director appointed under the Articles of Association, without a separate employment contract, is an officeholder rather than a worker for auto-enrolment purposes. Auto-enrolment duties only apply when the company has workers — employees or directors with employment contracts who meet the age and earnings criteria.

When exactly do my auto-enrolment duties start?

Your duties start date is the first day you have at least one worker. For a new employer, this is typically the start date of your first employee. If you are a director-only company and a director has an employment contract, duties begin on the date they start earning qualifying earnings. You should have a pension scheme ready before the first payday.

Can I use a salary sacrifice arrangement instead of the standard contribution method?

Yes. Salary sacrifice (also called “salary exchange”) is a legitimate and often tax-efficient way to structure pension contributions. The employee agrees to a lower gross salary, and the employer pays the difference directly into the pension. Both parties save on National Insurance. However, the total contribution must still meet the 8% minimum on qualifying earnings, and the arrangement must not reduce the worker’s cash pay below the National Minimum Wage.

What happens if an employee opts out — do I still have duties?

Yes. You must keep records of the opt-out, must not encourage the worker to stay opted out, and must re-enrol them approximately every three years if they are still an eligible jobholder. The re-enrolment duty applies even if the worker opted out voluntarily the first time.

Is the £10,000 earnings trigger based on actual pay or contracted hours?

It is based on actual qualifying earnings, not contracted hours. Qualifying earnings include salary, wages, bonuses, commission, overtime, and statutory payments. If a part-time worker earns below £10,000 in contracted pay but receives overtime or bonuses that push their total above the trigger, they become an eligible jobholder and must be enrolled.

Can I get Corporation Tax relief on employer pension contributions?

Yes. Employer pension contributions are an allowable business expense and are deductible from your company’s profits for Corporation Tax purposes. They are also exempt from employer National Insurance contributions, making them one of the most tax-efficient ways to extract value from your company.