UK Pension Auto-Enrolment: Common Mistakes to Avoid

Auto-enrolment has been mandatory for UK employers since 2012, yet The Pensions Regulator (TPR) still issues thousands of compliance notices every year. Most of them trace back to a small set of recurring, avoidable errors.

Missing the re-enrolment date

Every three years, employers must re-assess and re-enrol eligible staff who previously opted out. It's easy to miss because it isn't tied to a payroll event — it's tied to your original staging date. Put it on a calendar the moment your scheme starts, not when TPR reminds you.

Assessing age and earnings incorrectly

Eligibility depends on age (22 to State Pension age) and qualifying earnings (currently above £10,000 a year, pro-rated per pay period). Doing this assessment manually in a spreadsheet is where most errors creep in, especially for employees with variable hours or multiple pay elements.

Treating opt-outs as permanent

An opt-out only lasts until the next re-enrolment date, or until the employee asks to re-join sooner. Some payroll processes mistakenly treat an opt-out as a permanent flag, silently excluding staff who should have been re-assessed.

Late or incorrect declaration of compliance

The declaration of compliance to TPR is due within five months of your staging or re-enrolment date. Missing it is one of the most common reasons employers receive a fixed penalty notice, even when the underlying scheme itself was set up correctly.

How Atlanduz HRM helps

Atlanduz HRM automates age and earnings assessment every pay run, tracks your staging and re-enrolment dates automatically, and generates the reports you need for your declaration of compliance — removing the manual spreadsheet step where most mistakes happen.