Pension Auto-Enrolment in the UK: Your 2025-26 Complete Guide
Since 2012, employers have been required to automatically enrol eligible workers into a workplace pension scheme. Auto-enrolment has transformed retirement saving in the UK, bringing millions of workers into pensions who previously had none. Here is everything you need to know about how it works in 2025-26 and what it means for your take-home pay.
What is auto-enrolment?
Auto-enrolment is the legal requirement for employers to enrol eligible workers into a qualifying workplace pension scheme without any action from the employee. You are enrolled automatically — you do not need to apply. If you do not want to participate, you must actively opt out.
Who qualifies for auto-enrolment?
You will be automatically enrolled if you meet all three of the following criteria:
- You are aged between 22 and State Pension age
- You earn more than £10,000 per year (the earnings trigger)
- You work in the UK
Workers earning between £6,240 and £10,000 can ask to be enrolled voluntarily and the employer must still contribute. Workers earning below £6,240 can join a pension scheme but employers are not required to contribute.
Minimum contribution rates 2025-26
| Contributor | Minimum contribution |
|---|---|
| Employee (including tax relief) | 5% of qualifying earnings |
| Employer | 3% of qualifying earnings |
| Total minimum | 8% of qualifying earnings |
The 5% employee contribution breaks down as approximately 3% from your take-home pay plus 2% in tax relief added by the government (for Basic Rate taxpayers). This means your actual out-of-pocket cost is lower than the headline 5% figure suggests.
How auto-enrolment affects your take-home pay
Pension contributions via auto-enrolment are typically made through salary sacrifice or a relief-at-source arrangement, both of which reduce your taxable income. This means you receive income tax relief and National Insurance relief on your contributions.
Example: On a £35,000 salary with a 5% employee contribution:
- Annual pension contribution: £1,750
- Income tax saved (20%): £350
- NI saved (8% on contributions within the NI band): approximately £70
- Net cost to you: approximately £1,330
In other words, a £1,750 pension contribution costs you only around £1,330 in reduced take-home pay — a 24% uplift from tax and NI relief combined.
Can you opt out?
Yes, but it is rarely advisable. You have a one-month opt-out window after being enrolled. If you opt out, you lose your employer's 3% contribution — effectively turning down a significant part of your compensation. Your employer is required to re-enrol you every three years even if you have previously opted out.
Qualifying earnings band
Contributions are calculated on qualifying earnings — the band between £6,240 and £50,270 per year. Earnings below £6,240 are ignored for minimum contribution purposes, as are earnings above £50,270 (though many employers apply contributions to full salary).
Frequently asked questions
Does my employer have to contribute if I earn below £10,000?
If you earn between £6,240 and £10,000 and ask to be enrolled, yes — your employer must contribute. Below £6,240, the employer obligation to contribute does not apply, though they can choose to do so.
What happens to my pension if I change jobs?
Your pension pot stays with you and continues to grow. You can leave it with your previous employer's scheme, transfer it to a new scheme, or consolidate multiple pots — though always check for exit charges and fund options before transferring.