What Happens If You Get Auto-Enrolment Wrong? Penalties, Fixes and Best Practice

Getting auto-enrolment wrong can lead to financial penalties, compliance investigations, and unnecessary disruption to your business.

The Pensions Regulator (TPR) actively monitors employers and will step in if duties aren’t being met, whether that’s failing to enrol eligible staff, missing contributions, or not keeping proper records. For many businesses, getting support with auto-enrolment compliance early on helps avoid these issues and keeps everything running smoothly as you grow.

Auto-enrolment mistakes aren’t just minor admin issues, they can escalate quickly.

Even small oversights, like missing an employee’s eligibility date or calculating contributions incorrectly, can trigger enforcement action.

Beyond fines, mistakes can:

• Damage employee trust
• Create payroll complications
• Lead to time-consuming corrections

For growing businesses, these issues often appear when internal processes haven’t kept pace with expansion.

Failing to assess staff correctly is one of the most common compliance issues.

This often happens when:

• Employees cross earnings thresholds or reach age 22
• Staff change working hours
• Payroll isn’t reviewed regularly

Errors in contribution calculations can result in underpayments that must be corrected.

Even small mistakes can build up over time and become more complex to fix.

Employers are required to re-enrol eligible employees every three years.

Missing this deadline is a common and avoidable compliance failure.

Without accurate records, it becomes difficult to demonstrate compliance if reviewed by TPR.

Even if everything else is done correctly, failing to submit your declaration can still result in penalties.

Even if everything else is done correctly, failing to submit your declaration can still result in penalties.

The Pensions Regulator applies penalties based on how serious the issue is and how long it goes unresolved.

• £400 fine
• Issued if you fail to act after initial warnings

If non-compliance continues, daily fines can apply:

• £50 per day (small employers)
• Up to £10,000 per day (large employers)

In more serious cases, TPR may:

• Take legal action
• Recover unpaid contributions
• Publicly name non-compliant employers

Review your payroll and pension setup to spot:

• Missing employees
• Incorrect contributions
• Missed deadlines

If contributions are wrong:

• Calculate what’s owed
• Pay back contributions promptly
• Keep clear records of corrections

Be transparent with affected staff and explain:

• What happened
• How it’s being resolved

Fixing the issue is only part of the solution,  you also need to prevent it happening again.

If you’re unsure where to start, following a structured approach like a step-by-step checklist for auto-enrolment compliance can help ensure nothing is missed.

A growing business hires multiple employees over a short period but doesn’t regularly reassess eligibility.

As a result:

• Two employees aren’t enrolled on time
• Contributions are missed for several months

The outcome:

• Backdated contributions must be paid
• A fine is likely to be issued
• Additional admin time is required to fix the issue

To avoid penalties and keep everything running smoothly:

• Regularly assess your workforce
• Automate payroll processes where possible
• Keep clear and organised records
• Track re-enrolment deadlines
• Review compliance as your business grows

Many businesses choose external support to reduce risk and free up internal time.

Auto-enrolment mistakes can be costly, but they’re also avoidable with the right systems in place.

If you want peace of mind that everything is handled correctly, explore how HWWA Consulting support businesses with auto-enrolment compliance, from initial setup through to ongoing management.