Auto-Enrolment Basics For Small Employers: When Duties Start And How To Stay On Top Of Them

Something A Lot Of Small Employers Get Wrong

Auto-enrolment has been running since 2012, and yet it still catches small employers off guard, particularly those who are new to taking on staff or who have recently incorporated.

The rules are not especially complicated once you understand them, but they do carry real consequences if you ignore them or get the timing wrong.

The Pensions Regulator can issue compliance notices, fixed penalties, and escalating daily penalties to employers who fail to meet their workplace pension duties. Many of the employers affected are small businesses. The good news is that staying on the right side of the rules is genuinely straightforward once you know what to do and when.

This guide covers the essentials for small employers: when your duties begin, who you need to enrol, what contributions look like, and what ongoing compliance actually involves day to day.

What Auto-Enrolment Actually Is

Auto-enrolment is the legal requirement for employers to automatically enrol eligible workers into a workplace pension scheme and make minimum employer contributions into it.

Workers can opt out if they choose to, but eligible workers must usually be automatically enrolled first. You cannot simply ask them in advance whether they want to join and use that as a way of avoiding your duties.

The intention behind the legislation is to increase pension saving across the working population by making pension participation the default position. It has had a major impact, with millions of workers enrolled into workplace pensions since the scheme began.

For you as an employer, it means an ongoing legal obligation that sits alongside PAYE, RTI, payroll, and employment record-keeping. It cannot be opted out of at the employer level, and it does not go away once it is set up. It requires active management throughout.

When Do Your Duties Start?

This depends on when you started employing people.

For employers who were already operating before 2017, a staging date was assigned. Most of those staging dates are now long past.

For new employers who first employ staff on or after 1 October 2017, auto-enrolment duties begin on the day the first member of staff starts work. This is known as your duties start date.

That does not necessarily mean every worker must be enrolled on day 1, because you can use postponement in some circumstances for up to 3 months. However, your legal duties still begin from the first day of employment. You must assess your staff, communicate with them properly, and meet the relevant deadlines.

This is one of the things that catches first-time directors and new business owners most off guard. If you have just set up a limited company and you are about to take on your first employee, your auto-enrolment duties begin immediately. The same applies if you have been a sole trader and then incorporate and start running payroll properly.

If you are at that stage, working with an accountant for startup business who can help you set up payroll and pension administration from the outset is well worth doing before your first payroll date rather than after it.

Who Do You Need To Enrol?

Not everyone you pay needs to be automatically enrolled, but you do have obligations towards most workers. The rules divide people into different categories.

Eligible jobholders are workers who must usually be automatically enrolled. To fall into this category, a worker must:

• Be aged between 22 and State Pension age
• Earn above the automatic enrolment earnings trigger, which is £10,000 per year
• Work or ordinarily work in the UK

These workers must be enrolled without needing to ask you first.

Non-eligible jobholders are workers who do not meet all the eligible jobholder criteria but still have the right to opt in. This can include workers aged 16 to 21 or State Pension age to 74 who earn above the earnings trigger, or workers aged 16 to 74 who earn above the lower qualifying earnings threshold but below the earnings trigger. If they opt in, you must usually make employer contributions.

Entitled workers are workers aged 16 to 74 who earn below the lower qualifying earnings threshold. They have the right to join a pension scheme, but you are not required to make employer contributions for them.

In practice, for many small businesses with full-time staff, the majority of employees will be eligible jobholders who need to be automatically enrolled. But it is still important to assess each worker properly rather than assuming.

Minimum Contribution Rates

Once you have enrolled eligible workers, you need to make minimum contributions.

The current minimum automatic enrolment rates are:

• Employer contribution: at least 3% of qualifying earnings
• Employee contribution: usually 5% of qualifying earnings, including tax relief where applicable
• Total minimum: 8% of qualifying earnings

For the 2026/27 tax year, qualifying earnings are those between £6,240 and £50,270 per year. It is only the earnings within that band that contributions are calculated on if your scheme uses qualifying earnings.

So, for an employee earning £28,000 a year, qualifying earnings would be £28,000 minus £6,240, which equals £21,760. The employer’s 3% contribution would be £652.80 per year, and the employee’s 5% contribution would be £1,088 per year, including tax relief where the scheme operates that way.

Some employers choose pension schemes that calculate contributions on total pay rather than qualifying earnings. This can simplify the calculation and may result in higher contributions. Either approach can be acceptable, provided the scheme meets the automatic enrolment minimum requirements.

It is worth factoring employer pension contributions into your payroll cost modelling. Combined with employer National Insurance changes that took effect from April 2025, including the higher employer NI rate and lower secondary threshold, the total employment cost per member of staff is higher than many new employers expect. Our post on employer National Insurance increases covers the NI side of this in more detail if you want to understand the full picture.

Choosing A Pension Scheme

You need a pension scheme that is ready when your duties apply. The scheme must be a qualifying workplace pension scheme under the auto-enrolment rules.

If you do not have an existing occupational pension scheme, one common option for small employers is the National Employment Savings Trust, known as NEST. It is a government-established scheme designed to be available to employers of all sizes.

Other options include master trust and workplace pension schemes offered by providers such as Legal & General, Scottish Widows, Aviva, NOW: Pensions, The People’s Pension, and others. Some payroll software providers also integrate with pension schemes, which can make administration easier.

When choosing a scheme, look at:

• The charges applied to members
• How well the scheme integrates with your payroll software
• How easy it is to submit contribution data
• The quality of support available for small employers
• Whether the scheme is suitable for the type of workforce you have
• A cheap or familiar provider is not always the best fit if the administration is difficult or the payroll integration is poor.

Registering And Declaring Compliance

Once you have assessed your staff, enrolled those who need to be enrolled, and set up the relevant pension arrangements, you must complete a Declaration of Compliance with The Pensions Regulator.

This must be completed within 5 months of your duties start date.

The declaration is completed online through The Pensions Regulator’s website. It confirms that you have met your duties, sets out details of the scheme you are using, and records how many workers you have enrolled or assessed.

Missing the declaration deadline, or failing to complete it properly, is one of the most common reasons employers receive compliance notices and fixed penalty fines.

A fixed penalty is £400. If the issue is not resolved, escalating daily penalties can apply. These vary by employer size, starting at £50 per day for employers with 1 to 4 staff and rising to as much as £10,000 per day for the largest employers.

Re-Enrolment: The Bit That Catches People Out 3 Years In

Auto-enrolment is not a one-off exercise. Every 3 years, you are required to re-enrol eligible workers who have previously opted out or ceased active membership of the scheme. This is called re-enrolment, and it comes with its own re-declaration of compliance.

Re-enrolment usually applies to eligible workers who opted out more than 12 months before your re-enrolment date. If they want to opt out again, they can, but they must first be formally re-enrolled and given the opportunity to make that choice.

Many small employers set up auto-enrolment properly in year 1 and then forget about re-enrolment entirely until The Pensions Regulator sends a reminder. By then, the deadline may be close.

Putting your re-enrolment date in your calendar is a simple but effective precaution.

Opting Out: What You Can And Cannot Do

Workers have the right to opt out of auto-enrolment within 1 month of being enrolled. If they opt out during this window, any contributions already made must usually be refunded.

What you cannot do is:

• Encourage or pressure workers to opt out
• Make opting out a condition of employment
• Offer workers incentives to opt out
• Handle the opt-out process for the worker in a way that influences their decision
• Enrol workers and then process an opt-out before they have had a proper chance to decide for themselves
• The Pensions Regulator takes inducement to opt out seriously, and complaints from workers can trigger investigations. The rules exist to protect workers’ pension savings, not to be worked around.

Record Keeping

You are legally required to keep records relating to auto-enrolment. Most records must be kept for 6 years, although opt-out notices must be kept for 4 years.

This includes:

• Details of the pension scheme used
• Records of which workers were enrolled, opted out, opted in, or joined voluntarily
• Contribution amounts and payment dates
• Opt-out notices received
• Communications sent to workers
• Worker assessment records

These records need to be available if The Pensions Regulator requests them as part of a compliance review. Keeping them in your payroll software, or in a documented system that integrates with your bookkeeping, is the most practical approach.

Good records also make re-enrolment much simpler, since you will need to know which workers previously opted out and when.

For businesses using cloud-based accounting software, maintaining payroll and pension records alongside your bookkeeping in one integrated system keeps everything accessible. Working with xero accountants Nottingham who are experienced in payroll integration means your records are organised from the outset rather than scattered across different systems. Our post on why accurate bookkeeping is crucial for business success is worth a read for the broader case for keeping records in good order from day 1.

Common Mistakes Small Employers Make

Starting payroll before setting up a pension scheme is one of the most common mistakes. Your duties begin immediately when your first member of staff starts work, so the pension position needs to be dealt with from the beginning.

Missing the Declaration of Compliance deadline is another frequent issue. Five months can pass quickly when you are busy running a business.

Getting worker categories wrong can also create problems. Failing to enrol eligible workers is a compliance issue, but incorrectly dealing with non-eligible or entitled workers can also create confusion.

Calculating contributions incorrectly is another common weak point. Employers need to know whether their scheme uses qualifying earnings, pensionable pay, or another certified basis.

Forgetting re-enrolment is especially easy because it usually falls 3 years after the initial setup.

Not keeping opt-out notices can cause problems later if a worker queries their pension record.

Using a pension scheme that does not meet auto-enrolment requirements can also create serious issues, even if contributions have been paid somewhere.

These are all avoidable with the right systems in place. If you are managing payroll yourself and auto-enrolment is adding complexity, it may be the right time to look at whether outsourcing makes sense. An outsourced finance services arrangement can cover payroll, pension administration, bookkeeping, and associated compliance filings as a single integrated function, reducing the risk of things being missed.

Auto-Enrolment And Your Other Payroll Obligations

Auto-enrolment sits within the broader payroll compliance picture. It interacts with several other areas.

RTI submissions: payroll data submitted to HMRC via Real Time Information should reflect pension contributions correctly. Our post on RTI reporting covers what RTI involves and what can go wrong.

Salary sacrifice arrangements: some employers run pension contributions through salary sacrifice. This can reduce employee and employer National Insurance in some cases, but it must be set up correctly and documented properly.

The National Minimum Wage: salary sacrifice arrangements must not reduce a worker’s cash pay below the National Minimum Wage or National Living Wage. This is a common area for mistakes.

Benefits in kind: employer pension contributions are generally treated favourably for tax and National Insurance purposes, which is one reason pensions remain an important part of a remuneration package.

Getting all of these to work together cleanly is one of the reasons many small employers benefit from having payroll managed by someone who understands the full picture, rather than relying on basic software and hoping for the best.

If you are a landlord employer, perhaps employing a property manager or administrator, the same duties apply. Working with accountant for landlords specialists means your employment obligations are handled alongside your rental income and tax position rather than treated in isolation.

For property management companies or commercial property businesses that employ staff, commercial property accounting specialists who understand the sector will be familiar with the full cost structure of property management, including employment costs, pension contributions, and how they interact with service charge budgeting and financial reporting.

And if you are navigating multiple compliance obligations as a new business, including payroll, pensions, VAT, Corporation Tax, and bookkeeping, bookkeeping Nottingham based or remote services that are integrated with your accountant can help make sure nothing falls through the gaps between different systems or providers.

For property investors who also have a separate business or consulting operation, understanding how employment costs and pension obligations interact with your overall tax position is something a property tax accountant with broader business experience can help you model clearly.

And as businesses that started out as a sole trader consider whether to incorporate, with all the payroll and pension obligations that may bring, our post on sole trader vs limited company is a useful reference for understanding exactly what changes and what does not when you make that transition.

Frequently Asked Questions

Do Auto-Enrolment Duties Apply If I Am The Only Director With No Other Employees?

If you are a single-director company with no other staff, auto-enrolment duties generally do not apply. However, once you take on your first worker, or if there is more than 1 director with contracts of employment, duties may apply. It is worth confirming your specific position with an accountant before assuming you are exempt.

What Happens If I Miss The Declaration Of Compliance Deadline?

The Pensions Regulator can issue a compliance notice and, if the issue is not corrected, a fixed penalty notice of £400. Continued non-compliance can lead to escalating daily penalties. These start at £50 per day for the smallest employers and increase depending on staff numbers.

Can I Use The Same Pension Scheme For All Employees?

Yes, provided it is a qualifying scheme under auto-enrolment regulations and you are meeting the minimum contribution requirements for all relevant workers. Most small employers use a single scheme for simplicity.

What If An Employee Is On A Variable Hours Contract And Their Earnings Fluctuate?

You need to assess their eligibility each pay period. If their earnings exceed the relevant pay period trigger, they may become eligible and need to be automatically enrolled if they have not already been enrolled. For 2026/27, the annual earnings trigger remains £10,000, with equivalent thresholds for weekly, fortnightly, 4-weekly, and monthly pay periods.

Can I Offer A Higher Employer Contribution Than The Minimum?

Yes. Many employers do, particularly where they are trying to attract or retain staff. A higher employer pension contribution can be a valuable benefit and may be tax-efficient for the business, but it should be properly budgeted and documented.

Does Auto-Enrolment Apply To Part-Time Workers?

Yes, provided they meet the age and earnings criteria. The earnings trigger applies regardless of whether someone is full-time or part-time. A part-time worker earning above the relevant threshold and aged between 22 and State Pension age must usually be automatically enrolled.

Make Sure Your Auto-Enrolment Is Handled Correctly

Auto-enrolment is one of those compliance obligations that can feel low priority until The Pensions Regulator issues a penalty notice. At that point, it becomes urgent very quickly.

Getting the scheme set up, contributions calculated, records maintained, and declarations filed correctly from the start is always easier than correcting a backlog of errors.

FHP Accounting supports small employers across Nottingham and nationally with payroll, pension administration, and the full range of employer compliance obligations. As experienced accountancy firms in Nottingham, we make sure your auto-enrolment duties are handled properly alongside everything else, so you can focus on your business rather than your paperwork.

Get in touch today to find out how we can support you with payroll and pension compliance.

Kellee Quigley

I lead FHP Accounting, an accountancy practice specialising in Commercial and Residential Property Accounting. Our goal is to make the administration of running property portfolios easier for landlords, managers, and investors — allowing you to focus on what you do best, while we take care of everything behind the scenes.