

From SOC code verification to Appendix D record-keeping, here is where Jobbatical removes the compliance risk from your CoS process.
Jobbatical reviews the job description against live Appendix Skilled Occupations tables to confirm the correct SOC 2020 code, the single most common cause of CoS rejection and compliance investigations in 2026.
We cross-check the offered salary against the going rate for the SOC code, and verify compliance with the new April 2026 rule requiring the salary minimum to be met in every individual 3-month payroll period.
Jobbatical manages the Defined and Undefined CoS request and assignment process directly via the Home Office Sponsor Management System, ensuring every field is accurate before the reference number is generated.
We audit your Appendix D compliance records: payslips, contracts, right-to-work checks, and the new 2026 requirement for rolling induction and handbook acknowledgement records, so your sponsor licence stays protected during UKVI compliance visits.

A Certificate of Sponsorship (CoS) is an electronic record , not a physical document , generated by a licensed UK employer through the Home Office Sponsor Management System (SMS). It is a mandatory prerequisite that allows an overseas worker to apply for a UK Skilled Worker visa or other sponsored work routes. The CoS contains the worker's job title, SOC 2020 occupation code, start date, salary, and work location, which the Home Office uses to assess visa eligibility.
There are two types: a Defined CoS (for workers applying from outside the UK, requires Home Office pre-approval) and an Undefined CoS (for in-country switches or extensions, drawn from a pre-allocated pool). The CoS must be used by the worker within three months of assignment, and the worker cannot apply more than three months before the job start date. Assigning a CoS is not a guarantee of visa approval , the worker must independently meet all visa requirements, and the CoS details must precisely match the visa application.
Applications are submitted by the employer via the Sponsor Management System (SMS). As of 2026, the CoS assignment fee is £525 per certificate, payable by the employer.
Everything your organisation must have in place before assigning a CoS
What your sponsored worker needs to apply for their UK Skilled Worker visa using the CoS reference number
Download a simple reference PDF with all 18 document and compliance items , useful for briefing your HR team, employment counsel, or the worker themselves. For nationality-specific requirements, TB test obligations, ISC calculations, and end-to-end CoS submission support, talk to the Jobbatical team.
Document names only , no nationality-specific details
Get the full tailored checklist →SOC code review · ISC calculation · Rejection prevention
The CoS process is deceptively administrative , but errors in SOC code selection, salary compliance, or payroll period reporting (new from April 2026) can trigger UKVI investigations that put your entire sponsor licence at risk. Jobbatical handles the end-to-end CoS workflow so your team doesn't have to carry the compliance exposure alone.
These are the most common reasons UKVI refuses or returns CoS requests and visa applications , and what your HR team must verify before submission.
| Rejection risk | Risk level | What goes wrong | Prevention |
|---|---|---|---|
| Incorrect SOC 2020 code | Critical | Job duties don't match the chosen SOC code; or code is below RQF Level 6 (now required from July 2025) | Use CASCOT and Appendix Skilled Occupations to match duties, not job title. Document your selection rationale |
| Salary below going rate or failing per-period payroll rule | Critical | Salary meets annual threshold but dips below minimum in a 3-month payroll period (new April 2026 rule) | Verify salary against both the annual going rate AND each individual 3-month payroll period before assignment |
| Name mismatch between CoS and passport | Critical | Abbreviated name (e.g. "Rob" vs "Robert"), name order differences, or typos in personal data | Copy passport details character-by-character. Verify with the worker before SMS submission |
| Speculative Defined CoS request | High | Applying for a Defined CoS before a specific worker is identified , now explicitly rejected under March 2026 guidance | Submit a Defined CoS request only after a specific worker is selected and all their details confirmed |
| B1 English certificate submitted instead of B2 | High | Worker submits a pre-April 2026 B1 test certificate; requirement has increased to B2 CEFR | Verify the worker's English test result meets B2 (not B1); confirm the provider is on the UKVI approved list |
| ISC charged to the worker | High | Immigration Skills Charge deducted from salary or invoiced to the employee , a compliance breach that risks licence revocation | Pay ISC from the employer's account. Keep payment confirmation as Appendix D evidence |
| Appendix D record gaps | Medium | Missing payslips, unsigned contracts, or no record of staff handbook acknowledgements , a key focus of 2026 compliance visits | Maintain rolling records per the updated March 2026 Home Office guidance; audit every 6–12 months |
| Missing TB test certificate | Medium | Worker from a TB-listed country submits application without a valid certificate from an approved clinic | Check GOV.UK list of TB-required nationalities early; allow 2–4 weeks for the test and certificate |
| Not sure if your CoS is compliant? Book a compliance review with Jobbatical → | |||
The March and April 2026 Home Office guidance changes have raised the compliance bar for every UK sponsor. Jobbatical's CoS service is built to absorb that risk:
Use these alongside the CoS checklist , the CoS is one step in a broader UK immigration process for each hire.
Disclaimer: This checklist is for general guidance only and does not constitute legal or immigration advice; requirements may change without notice. UK Certificate of Sponsorship rules, salary thresholds, SOC code eligibility, payroll compliance requirements, and sponsor duties are updated regularly by the Home Office , verify against current official guidance (GOV.UK Sponsor a Skilled Worker guidance, Appendix Skilled Occupations, and Appendix D) before assigning any Certificate of Sponsorship. Jobbatical accepts no liability for visa refusals, sponsor licence downgrades, suspension or revocation, delays, or complications arising from reliance on this checklist. For a complete, case-specific CoS and compliance review, consult the Jobbatical immigration team.
🇮🇳 India | Additional requirements and notes beyond the standard checklist:
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🇵🇰 Pakistan | Additional requirements and notes beyond the standard checklist:
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🇳🇬 Nigeria | Additional requirements and notes beyond the standard checklist:
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🇵🇭 Philippines | Additional requirements and notes beyond the standard checklist:
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🇨🇳 China | Additional requirements and notes beyond the standard checklist:
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🇿🇦 South Africa | Additional requirements and notes beyond the standard checklist:
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🇧🇩 Bangladesh | Additional requirements and notes beyond the standard checklist:
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🇺🇸 United States | Additional requirements and notes beyond the standard checklist:
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| Not sure what your employee's specific VAC, TB requirement, or nationality exemption status is? Email us at [email protected] or book a call | |
For the full end-to-end UK Certificate of Sponsorship process, see the UK CoS service page.
Requirements verified May 2026. Immigration rules are subject to change — always verify against the latest Home Office guidance before assigning a Certificate of Sponsorship.
Need support beyond this calculator? Our experts handle the full process, from eligibility checks to application and compliance.
Explore Certificate of Sponsorship (CoS)isA: To assign a Certificate of Sponsorship, your organisation must hold a valid, A-rated UK sponsor licence and have access to the Home Office Sponsor Management System (SMS). Before assignment, you need to confirm the correct SOC 2020 occupation code for the role (matched to actual job duties, not just the job title), verify the salary meets both the general threshold and the going rate for that SOC code, and gather the worker's full passport details, PAYE reference, and personal contact information. You also need to have paid the Immigration Skills Charge from the employer's account, and , for workers applying from outside the UK , submit a Defined CoS request to UKVI before the worker can apply. For roles that require an ATAS certificate, this must be obtained before the CoS is submitted.
A: A Defined CoS is used when your employee is applying for a UK visa from outside the country , typically as part of a Skilled Worker entry clearance application. Because the Home Office pre-approves each Defined CoS, the sponsor must request it for a specific, named worker (speculative requests are rejected under the updated March 2026 guidance). An Undefined CoS is drawn from a pre-allocated pool and is generally used for workers already in the UK who are switching visa routes or extending their Skilled Worker permission. Getting the type wrong , for example, assigning an Undefined CoS to a worker who needs entry clearance , will result in the visa application being refused.
A: For Undefined CoS, the assignment is effectively instant once submitted via the SMS , the reference number is generated immediately. For Defined CoS, the Home Office typically responds within 48 hours, though this can extend during high-demand periods. The CoS itself then has a 3-month validity window: the worker must submit their visa application within 3 months of the CoS being assigned, and they cannot apply more than 3 months before the job start date recorded on the CoS. Once the worker submits the visa application, entry clearance decisions typically take 3–8 weeks outside the UK, with priority options available.
A: The leading causes of CoS rejection and subsequent compliance investigations are: (1) incorrect SOC 2020 code , the most common and consequential error, since a wrong code can trigger a full sponsor licence compliance audit; (2) salary that fails to meet the going rate for the assigned SOC code, or falls short during any 3-month payroll period (a new requirement effective April 2026); (3) name mismatches between the worker's passport and the CoS data entered in the SMS; (4) speculative Defined CoS applications submitted before a specific worker is identified (explicitly rejected under March 2026 guidance); and (5) ISC charged to the worker rather than paid by the employer. If your organisation has had a CoS request rejected or is facing a compliance investigation, speak to Jobbatical's immigration specialists immediately.
A: From April 2026, most Skilled Worker applicants must earn at least £41,700 per year, or the going rate for their specific SOC 2020 occupation code , whichever is higher. New entrants (workers under 26, recent UK graduates, or those working towards professional qualifications) may qualify for a reduced threshold of £33,400 or 70% of the going rate, whichever is higher. Roles on the Immigration Salary List carry a general threshold of £33,400, though the ISL is scheduled to be phased out entirely by 31 December 2026. A new payroll compliance rule effective April 2026 also requires the salary to meet the minimum in every 3-month payroll period, not just on an annual average basis , so HR teams must monitor payroll period by period.
A: The Immigration Skills Charge must always be paid by the employer , charging it to the worker, even indirectly via a salary deduction, is a serious compliance breach that can result in sponsor licence downgrade or revocation. The charge is £1,000 per year of sponsorship for small sponsors (50 or fewer employees or annual turnover of £10.2 million or less), and £1,239 per year for medium and large sponsors. It is calculated based on the full visa duration: for example, a 3-year visa for a large employer costs £3,717. Payment confirmation must be retained as part of the employer's Appendix D compliance records.
A: Workers applying for a Skilled Worker visa from outside the UK must attend a UK Visa Application Centre (VAC) in their country of residence to submit biometric data. The specific VAC and booking process depends on the worker's nationality and location , VFS Global operates most UK VACs across Asia, Africa, and the Middle East, while TLScontact handles a number of European locations. Appointment wait times vary significantly by country and time of year; HR teams should advise workers to book appointments as soon as the CoS reference number is available, as delays at the VAC stage are a common source of unexpected timeline overruns.
A: If your organisation's sponsor licence is downgraded to B-rated, you lose the ability to assign new Certificates of Sponsorship until you complete a time-bound action plan , which also carries a £1,476 fee , and return to A-rated status. Workers already sponsored under your licence are not immediately affected, but you cannot bring in new hires during this period. If the licence is revoked, sponsored workers' visas are typically curtailed (usually to 60 days to find a new sponsor or leave the UK). This makes compliance maintenance a business-critical concern, not just an HR task. Jobbatical provides proactive compliance monitoring to prevent licence downgrades before they occur.
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Complete UK Certificate of Sponsorship checklist for 2026: 18 employer & employee documents, SOC code verification, ISC compliance rules, and rejection causes. Free guide download for HR and Employer teams by Jobbatical.
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