TL;DR: The Immigration Skills Charge is a mandatory levy paid by UK sponsors when assigning a Certificate of Sponsorship. Rates differ by employer size: £364 per year for small/charitable sponsors and £1,000 per year for medium and large sponsors. Certain occupations are exempt.
Understanding the Immigration Skills Charge for UK Sponsors
For any UK employer holding a sponsor licence, the Immigration Skills Charge (ISC) represents one of the most significant upfront costs associated with hiring overseas workers. Introduced under the Immigration Skills Charge Regulations 2017, the levy was designed to incentivise employers to invest in domestic skills and training. It is not optional — with limited exceptions, the charge must be paid in full at the point a sponsor assigns a Certificate of Sponsorship (CoS) to a worker.
Unlike the visa application fee, which is paid by the worker, the Immigration Skills Charge is the sole financial responsibility of the sponsoring employer. The total amount owed depends on two key variables: the size and type of the sponsoring organisation, and the length of permission being requested. For multi-year appointments, these costs accumulate quickly and must be factored into workforce planning and recruitment budgets long before a job offer is made.
This reference guide sets out the current ISC rates, explains how the charge is calculated, identifies occupations that are exempt from the levy, and clarifies exactly when and how payment is collected during the sponsorship process.
What Is the Immigration Skills Charge?
The Immigration Skills Charge is a statutory levy paid by UK-licensed sponsors to the Home Office when assigning a Certificate of Sponsorship to an eligible overseas worker under certain visa routes, most notably the Skilled Worker route and the Senior or Specialist Worker route (Global Business Mobility). The charge is calculated on a per-year basis according to the length of the visa being sponsored and the size of the sponsoring organisation. Funds collected contribute to government skills and apprenticeship programmes in the UK.
What Are the Current Immigration Skills Charge Rates?
The Immigration Skills Charge is tiered according to the classification of the sponsoring employer. The two tiers are:
Small or Charitable Sponsors
Organisations that qualify as small sponsors under the Companies Act 2006 — broadly, those meeting at least two of the following three criteria: fewer than 50 employees, annual turnover of no more than £10.2 million, and a balance sheet total of no more than £5.1 million — pay a reduced rate. Registered charities also qualify for this lower tier regardless of size.
Small or charitable sponsor rate: £364 for the first 12 months of the visa, plus £182 for each additional six-month period.
Medium or Large Sponsors
All other sponsors — including public bodies, large private sector employers, and organisations that do not meet the small company thresholds — pay the standard rate.
Medium or large sponsor rate: £1,000 for the first 12 months of the visa, plus £500 for each additional six-month period.
How Is the Total Charge Calculated?
The charge is not a flat fee. It scales with the length of leave being granted. A sponsor assigning a CoS for a three-year visa would pay as follows:
- Small sponsor: £364 (year one) + £182 (six months) + £182 (six months) = £728 total
- Large sponsor: £1,000 (year one) + £500 (six months) + £500 (six months) = £2,000 total
For a five-year Skilled Worker visa sponsored by a large employer, the total ISC reaches £5,000. These figures can represent a substantial line item in recruitment costs, particularly for organisations sponsoring multiple workers simultaneously.
Where a visa is granted for a period that is not a clean multiple of six months, the Home Office rounds up to the next six-month increment for the purposes of calculating the charge.
Which Occupations Are Exempt from the Immigration Skills Charge?
Not all sponsored workers trigger the ISC. The Home Office maintains a list of occupations that are exempt from the charge. According to the official guidance, the following categories are not subject to the Immigration Skills Charge:
PhD-Level Occupations
Workers being sponsored in roles that appear on the shortage occupation or immigration salary list at PhD level — specifically those classified under SOC codes designated as requiring doctoral-level qualifications — are exempt from the charge.
Government Authorised Exchange Workers
Workers sponsored under the Government Authorised Exchange (GAE) route, which covers approved exchange programmes, are also exempt.
Students Switching Into Work Routes
In certain circumstances, students transitioning from a Student visa to a work route may benefit from an exemption, provided the conditions specified in the regulations are met.
High Potential Individual and Global Talent Route Holders
Individuals sponsored on certain prestigious talent-focused routes fall outside the scope of the ISC, reflecting the government’s policy to attract high-value migrants without imposing additional cost burdens on their sponsors.
International Agreement Workers
Workers entering the UK under international treaty obligations — for example, private servants in diplomatic households — are similarly exempt from the levy.
Sponsors are advised to verify the applicable SOC code and visa route category against the official exemption list before assuming the ISC does not apply. Incorrect assumptions at the CoS assignment stage can delay processing.
When and How Is the Immigration Skills Charge Paid?
Payment at CoS Assignment Stage
The Immigration Skills Charge is collected at the moment a sponsor assigns a Certificate of Sponsorship through the Sponsor Management System (SMS). The charge cannot be deferred, split across instalments, or paid retrospectively — it must be settled in full before the CoS is formally assigned and its reference number generated.
This timing has a practical implication for sponsors: budget approval for the ISC must be secured before the CoS assignment process begins, not at the point the visa application is submitted by the worker. Any delay in payment will stall the CoS assignment and, in turn, delay the worker’s ability to apply for their visa.
Refund Provisions
The Home Office does operate a partial refund mechanism in certain circumstances. If a visa application is refused, or if the worker does not take up the role, sponsors may be entitled to a refund of the ISC. Similarly, if a worker’s employment ends before the period covered by the charge expires, a proportionate refund of the unused portion may be available.
Refund claims must be made through the Sponsor Management System. Sponsors should retain accurate records of employment start and end dates to support any refund request.
Who Bears the Cost?
Under the Immigration Skills Charge Regulations, it is unlawful for a sponsor to pass the Immigration Skills Charge on to the sponsored worker, either directly or indirectly. The full cost must be borne by the employer. Sponsors found to have recouped the ISC from workers risk enforcement action and potential revocation of their sponsor licence.
Implications for Sponsors and Employers
The Immigration Skills Charge adds a meaningful financial dimension to every overseas recruitment decision. For large employers sponsoring workers on five-year visas, the ISC alone — before visa application fees, legal costs, or relocation support — can reach £5,000 per worker. Organisations with high-volume international recruitment programmes must incorporate ISC projections into annual workforce budgets.
Small businesses and charities benefit meaningfully from the reduced rate tier, which roughly halves the charge compared to medium and large organisations. Verifying that the organisation genuinely qualifies as a small company under the Companies Act 2006 criteria before each sponsorship is therefore commercially significant.
Sectors relying heavily on roles that qualify for ISC exemption — such as research-intensive industries employing PhD-level occupations — may find their total sponsor cost profile materially lower than organisations in other sectors.
Frequently Asked Questions
Q: How much does the Immigration Skills Charge cost for a large employer sponsoring a three-year Skilled Worker visa? A: A medium or large sponsor would pay £1,000 for the first year, plus £500 for each subsequent six-month period. For a three-year visa, this amounts to £1,000 + £500 + £500 + £500 + £500 = £3,000 in total.
Q: Can the Immigration Skills Charge be reclaimed from the sponsored worker? A: No. Under the Immigration Skills Charge Regulations, sponsors are prohibited from passing this cost to the worker. Doing so constitutes a breach of sponsor licence obligations and may result in enforcement action by the Home Office.
Q: Which visa routes attract the Immigration Skills Charge? A: The charge primarily applies to the Skilled Worker route and the Senior or Specialist Worker (Global Business Mobility) route. Some other sponsored work routes may also attract the charge depending on the specific circumstances. Sponsors should consult the official guidance to confirm whether the charge applies to a specific route.
Q: What is the ISC exemption for PhD-level occupations? A: Workers sponsored in roles classified at PhD level under the relevant Standard Occupational Classification codes are exempt from the Immigration Skills Charge. Sponsors must ensure the assigned SOC code accurately reflects the role to rely on this exemption.
Q: Are Immigration Skills Charge refunds available if a worker leaves early? A: Yes. If the sponsored worker leaves before the end of the period covered by the ISC, the sponsor may be entitled to a proportionate refund for the unused portion. Refund requests are made through the Sponsor Management System, and the Home Office will calculate the refundable amount based on the remaining period.
Key Takeaways
- The Immigration Skills Charge is a mandatory levy paid by UK sponsors at the point a Certificate of Sponsorship is assigned, not when the visa application is submitted.
- Small sponsors and registered charities pay £364 for the first year plus £182 per additional six months; medium and large sponsors pay £1,000 plus £500 per additional six months.
- Certain occupations — including PhD-level roles and Government Authorised Exchange workers — are exempt from the ISC.
- The charge cannot lawfully be passed on to the sponsored worker and must be fully funded by the sponsoring employer.
- Partial refunds are available if a visa is refused or if employment ends before the sponsored period expires, claimed through the Sponsor Management System.
Conclusion
The Immigration Skills Charge is a core component of UK sponsor cost planning. Understanding the applicable rate tier, correctly identifying whether an occupation qualifies for an ISC exemption, and ensuring payment is ready at the CoS assignment stage are all essential steps in a well-managed sponsorship process. According to the Home Office’s official guidance, sponsors remain fully responsible for this charge throughout the sponsorship lifecycle. Organisations managing active sponsor licences should review their ISC obligations regularly to ensure compliance and accurate financial forecasting.