Immigration Salary List (ISL): Common Myths and Mistakes for UK Workers

Introduction

The immigration salary list (ISL) is a key part of the Skilled Worker visa route, allowing certain occupations to qualify for a reduced salary threshold. However, many UK workers and job seekers misunderstand how it works, leading to costly mistakes. This article clears up common myths and explains what the ISL really means for your pay.

What is the Immigration Salary List (ISL)?

The ISL is a list of occupations published by the Home Office where the minimum salary requirement for a Skilled Worker visa is set at 80% of the usual minimum rate. This means employers can sponsor workers in these roles at a lower salary than other skilled occupations. The list includes jobs from care workers to biological scientists, each with a specific occupation code and salary threshold.

According to GOV.UK guidance, the annual salaries are based on a 37.5-hour working week and must be pro-rated for other working patterns. There are two columns: the "standard rate" for those who got their first certificate of sponsorship after 4 April 2024, and the "lower rate" for those who qualify under earlier rules.

Common Myth 1: The ISL is the Same as the National Minimum Wage

A frequent mistake is confusing the immigration salary list with the National Minimum Wage (NMW) or National Living Wage (NLW). They are entirely different. The NMW/NLW are statutory minimum hourly rates that apply to almost all workers in the UK, regardless of visa status. For 2026, the NLW for those aged 21 and over is £12.71 per hour, the NMW for 18–20 is £10.85, and for under 18s and apprentices it is £8.00 per hour, as confirmed by the National Minimum Wage (Amendment) Regulations 2026.

In contrast, the ISL thresholds are annual salaries set per occupation, often much higher than the NMW. For example, a biological scientist on the ISL has a standard rate of £40,300 per year, which equates to about £20.67 per hour – far above the NLW. So if you are a UK worker, your minimum pay is governed by the NMW, not the ISL. The ISL only applies to sponsored visa applications.

Common Myth 2: All Jobs on the ISL Qualify Across the Whole UK

Another misconception is that every job on the list is eligible nationwide. In reality, some occupations are restricted to specific areas. For instance, chemical scientists in the nuclear industry and fishing boat masters only qualify in Scotland. Similarly, boat and ship builders and repairers are only eligible in Scotland. Always check the "Areas of the UK which qualify" column in the official list to see if your location is covered.

Common Myth 3: The Listed Salary is What You Will Take Home

The ISL shows the minimum annual salary that must be offered, but this is not take-home pay. Deductions for tax, National Insurance, and pension contributions will reduce the net amount. Additionally, the salary must be pro-rated if you work fewer than 37.5 hours per week. For example, a care worker on the ISL with a standard rate of £33,400 per year working 30 hours a week would have a pro-rated minimum of about £26,720 per year. Always check your contract and use the pay guides on our site to calculate your expected take-home pay.

How the ISL Relates to General Salary Thresholds

The Migration Advisory Committee (MAC) provides technical notes on how salary thresholds are set. For the Skilled Worker route, the general threshold is calculated at the 30th percentile of full-time earnings for eligible occupations, which using ASHE 2025 data gives a figure of £44,000 per year. Occupation-specific thresholds are set at the 25th percentile of earnings for that specific job. The ISL occupations benefit from a reduced threshold, meaning employers can offer 80% of the usual minimum, which can be significantly lower than the general threshold.

Practical Tips for Workers and Job Seekers

• If you are being sponsored for a Skilled Worker visa, confirm your occupation code and check the ISL to see if a reduced salary applies.
• Remember that the salary must be at least the higher of the ISL rate and the National Minimum Wage for your age. For most ISL jobs, the ISL rate is higher.
• Use the pay data section on our site to compare salaries for your role across different regions.
• If you are a UK worker not on a visa, the ISL does not affect your minimum pay – the NMW is your baseline.

Conclusion

The immigration salary list (ISL) is a useful tool for employers sponsoring skilled workers, but it is often misunderstood. By separating it from the National Minimum Wage, understanding regional restrictions, and knowing how pro-rating works, you can avoid common mistakes. For more detailed guidance, visit our topics page.