The visa sponsorship process is a two-track sequence: the employer must first secure a sponsor licence from the Home Office, then issue a Certificate of Sponsorship (CoS) to the worker, who then applies for their visa. Understanding how these two tracks connect — and where each one can fail — is the difference between a smooth hire and a costly delay.
Who This Guide Is For
This article serves both tracks equally. If you are an employer — an HR manager, a hiring director, or a small business owner — this guide walks you through every stage of building and using your sponsorship infrastructure. If you are a job seeker looking for visa-sponsored work, this guide shows you exactly what your prospective employer must do, what documents you will need to supply, and what happens at each stage of the visa application.
Where a step applies only to one party, this is clearly indicated. Where a decision turns on your specific eligibility or a compliance risk, you should consult a licensed immigration solicitor or an OISC-regulated adviser. This guide provides practical information only — it is not immigration legal advice, and it does not predict outcomes.
The Sponsorship Process at a Glance
Before going deep, here is the full sequence mapped against both parties.
| Stage | Employer action | Worker action |
|---|---|---|
| 1 | Apply for sponsor licence | Identify licensed sponsors / apply for roles |
| 2 | Receive licence; set up Sponsor Management System (SMS) access | Receive a job offer from a licensed sponsor |
| 3 | Confirm role meets eligibility criteria | Supply personal documents to employer |
| 4 | Assign Certificate of Sponsorship (CoS) | Receive CoS reference number |
| 5 | Pay Immigration Skills Charge | — |
| 6 | — | Submit visa application (online) and pay visa fee + IHS |
| 7 | Prepare for right to work check | Attend biometrics appointment if required |
| 8 | Conduct right to work check on day one | Receive visa decision; travel if entry clearance |
| 9 | Maintain ongoing compliance duties | Begin employment |
Each stage is covered in full below.
Stage 1: The Employer Applies for a Sponsor Licence
What the sponsor licence is and why it comes first
No employer can legally sponsor an overseas worker under the UK Skilled Worker route — or most other work routes — without first holding a valid sponsor licence granted by the Home Office's UK Visas and Immigration (UKVI). The licence is the legal permission that allows an employer to issue a Certificate of Sponsorship.
Applications are submitted online via the gov.uk Sponsor Management System. The employer must demonstrate that it is a genuine trading entity, that it has appropriate HR systems to meet sponsor duties, and that the key personnel named on the application (the Authorising Officer, Key Contact, and Level 1 User) are suitable.
Our detailed guide on how to apply for a UK Skilled Worker Sponsor Licence covers the application form and portal in step-by-step detail.
Documents the employer needs
The Home Office publishes a list of documents it requires to verify the business. For most employers this includes evidence of trading (VAT registration, bank statements, HMRC correspondence), proof of the premises, and identity documents for the Authorising Officer. The full current list is available in Appendix A of the Home Office's sponsor guidance document. Our sponsor licence application documents checklist sets out the standard requirements in a usable format.
Fees and processing time
The sponsor licence application fee is tiered by employer size. As an indicative figure at the time of writing, small sponsors and charities pay £536 and medium or large sponsors pay £1,476. These figures change — verify the current fee schedule at gov.uk/uk-visa-sponsorship-employers before submitting. A priority service, where available, reduces the standard processing time of approximately eight to twelve weeks to around ten working days. See our timeline guide at UK Sponsor Licence Application Timeline: How Long It Takes.
If you are concerned about the common reasons applications are rejected before you submit, our article Why Sponsor Licence Applications Get Refused is worth reading first.
Stage 2: Receiving the Licence and Setting Up SMS Access
Once the licence is granted, UKVI adds the employer to the Register of Licensed Sponsors — a public list that any worker or member of the public can search. Workers looking for legitimate sponsoring employers should always verify against this register.
The Authorising Officer receives login credentials for the Sponsor Management System, the web-based platform through which all sponsorship activity is managed: assigning CoS, reporting worker activity, and managing user access. The Level 1 User role typically handles day-to-day operational tasks within the SMS.
At this stage, the employer should also review their HR and record-keeping systems to ensure they can meet ongoing compliance duties before they bring any worker in. Sponsor Licence Compliance Duties After Approval sets out what those duties look like in practice.
Stage 3: Confirming the Role Qualifies
Before assigning a CoS, the employer must confirm that the specific job:
- Appears on the Skilled Worker eligible occupations list (identified by its Standard Occupational Classification, or SOC, code)
- Meets the general salary threshold (currently subject to change following the Migration Advisory Committee's ongoing reviews — verify at gov.uk/skilled-worker-visa/your-job)
- Meets the going rate for the specific occupation
- Is a genuine vacancy that cannot be straightforwardly filled from the settled workforce (though the Resident Labour Market Test no longer applies under the current rules, the vacancy must be real)
Where the role sits close to a salary threshold or uses an unusual SOC code, legal advice is strongly recommended before proceeding. Assigning a CoS for a non-qualifying role is a compliance breach.
For workers: if you are looking for sponsored roles in specific sectors, our job guides give a sense of the kinds of roles that typically attract sponsorship. See, for example, Accountant Jobs in the UK with Visa Sponsorship 2026 or Care Assistant Jobs in the UK with Visa Sponsorship 2026 for sector-specific context.
Stage 4: Assigning the Certificate of Sponsorship
What assigning a CoS means in practice
The employer assigns the CoS through the Sponsor Management System, not by posting a document to the worker. The system generates a unique reference number — typically a 14-character alphanumeric string — that is specific to the worker and the job being offered.
The CoS record must include the job title, the SOC code, the gross salary, the start date, and the worker's personal details (full name and date of birth). Once assigned, the CoS has a limited validity window — the worker must use the reference number in their visa application before it expires.
For a full breakdown of what the CoS must contain and how it is assigned, see Certificate of Sponsorship Explained for Employers 2026.
Defined and undefined CoS
There are two types of Certificate of Sponsorship. A defined CoS is used when the worker is applying from outside the UK for entry clearance — it must be requested from UKVI before it can be assigned, and there is an annual allocation system. An undefined CoS is used when the worker is already in the UK and is switching into the Skilled Worker route. Sponsors can hold a bank of undefined CoS and assign them without requesting each one individually, subject to their allocation.
Stage 5: Paying the Immigration Skills Charge
The Immigration Skills Charge (ISC) is paid by the employer when a defined or undefined CoS is assigned. It is calculated per worker per year of sponsorship. At the time of writing, indicative rates are £1,000 per year for medium and large sponsors, and £364 per year for small sponsors and charities. A three-year sponsorship for a medium-large employer would therefore generate a charge in the region of £3,000 — illustrative only; verify the current rates and methodology at gov.uk before committing.
The ISC must never be passed to the worker. It is an employer cost. Similarly, the sponsor licence application fee and the CoS fee (indicatively £239 per CoS) are employer costs. See Immigration Skills Charge Explained for Employers 2026 and the UK Sponsor Licence Cost and Fees Breakdown 2026 for a full cost picture.
Stage 6: The Worker's Visa Application
Once the worker has the CoS reference number, they can submit their visa application. For the Skilled Worker route, this is done online via the UKVI application portal at gov.uk/skilled-worker-visa/apply.
What the worker must submit
- The CoS reference number
- A valid passport or travel document
- Evidence of English language ability (usually a secure English language test from an approved provider, or a qualifying degree taught in English)
- Evidence of funds (unless the employer certifies maintenance on the CoS)
- Biometric information (collected at a Visa Application Centre if outside the UK, or via the UK Visas and Citizenship Application Services if switching inside the UK)
- Payment of the visa application fee and the Immigration Health Surcharge (IHS)
The IHS is paid by the worker (though some employers choose to cover it as part of the employment package — this is a matter for negotiation). At current rates the IHS for a Skilled Worker visa runs to several thousand pounds for a multi-year visa. Verify the current rate using the official IHS calculator at gov.uk/healthcare-immigration-application.
Processing times
UKVI publishes current processing time targets on its website. At the time of writing, the standard target for overseas Skilled Worker applications is three weeks; the priority service reduces this, where available. These targets are not guarantees. Do not book non-refundable travel until a decision has been received.
Stage 7 and 8: Right to Work Checks and the Worker's Arrival
Before the worker starts employment, the employer must conduct a statutory right to work check. For sponsored workers, this means checking that the worker holds a valid visa that permits the work being undertaken, and retaining a record of that check.
The check can be carried out using UKVI's online Employer Checking Service or by checking the worker's Biometric Residence Permit (BRP) or eVisa status. Our guide Right to Work Checks for Sponsored Employees UK 2026 covers the acceptable document types and the record-keeping requirements in detail.
A right to work check conducted before the worker's first day provides a statutory excuse against a civil penalty for illegal working. Failure to check — or failure to check correctly — removes that defence entirely.
Stage 9: Ongoing Compliance
Obtaining the licence and sponsoring the first worker is not the end. Sponsors carry continuous duties for the entire period the worker is employed under sponsorship, and beyond.
These duties include:
- Reporting — changes to the worker's role, salary, working pattern or location must be reported via the SMS within ten working days in most cases
- Record keeping — the employer must retain certain documents for each sponsored worker, including right to work records, contact details, and evidence of absences
- Cooperation with Home Office inspections — UKVI may conduct announced or unannounced compliance visits
- Renewing the licence — sponsor licences are not indefinite; renewal requirements apply
See Sponsor Licence Renewal and Reporting Changes 2026 for the full picture on renewal timelines and what triggers a mandatory report.
Where employers have complex sponsorship programmes or limited in-house immigration expertise, many engage a corporate immigration services provider. Corporate Immigration Services: What They Do and Cost 2026 explains the service options and what to expect from providers.
Common Mistakes and How to Fix Them
The following mistakes recur across sponsor licence and visa applications. Each has a concrete fix.
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Applying for a sponsor licence without reviewing HR systems first. The Home Office expects to see HR processes capable of supporting sponsor duties before it grants a licence. Fix: audit your HR capability — document retention, absence tracking, right to work procedures — before submitting the application.
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Assigning a CoS for a role that does not meet the salary threshold. If the salary is below the required going rate for the SOC code, the worker's visa application will be refused, regardless of other merits. Fix: cross-reference the salary against both the general threshold and the occupation-specific going rate before assigning the CoS.
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Letting the CoS expire before the worker applies. A CoS has a validity window — typically three months for defined CoS. Fix: communicate the expiry date clearly to the worker and agree a timeline for submitting the application well before expiry.
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Failing to conduct the right to work check before day one. The statutory excuse only applies if the check is done before employment begins. Fix: build the right to work check into the onboarding workflow as a hard prerequisite for starting work.
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Not reporting a change in the worker's circumstances within the required window. Salary increases, location changes, and role changes may all trigger a reporting duty. Fix: create an internal calendar reminder whenever a contract change is agreed, and review the SMS reporting triggers in the Home Office's sponsor guidance.
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Passing sponsorship costs to the worker. Charging a worker — directly or through salary deductions — for the sponsor licence, the CoS fee, or the Immigration Skills Charge is unlawful and constitutes a serious compliance breach. Fix: treat all sponsorship costs as a business overhead from the outset of budget planning. No legitimate employer or agent charges a worker for a job or a visa.
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Using the wrong CoS type. Assigning an undefined CoS for a worker requiring entry clearance (who should have a defined CoS) causes the visa application to fail. Fix: confirm whether the worker is inside or outside the UK at the point of application before assigning any CoS.
Illustrative Example: End-to-End Timeline for a Medium-Sized Employer
The following is a worked illustration and should not be treated as a prediction of your own application's timeline or cost.
Scenario: A medium-sized care provider in England wants to recruit a senior care worker from overseas. The company does not yet hold a sponsor licence.
- Week 1–2: Internal HR audit; documents gathered; online licence application submitted via SMS. Fee paid: £1,476 (medium employer, indicative).
- Week 2–12: Standard processing. UKVI processes the application; a compliance officer may call. Licence granted at week 10.
- Week 11: Company identifies candidate and makes a conditional job offer. The role is checked against the eligible occupations list and the going rate for the SOC code.
- Week 12: Defined CoS requested via SMS. Immigration Skills Charge paid: £1,000 x 3 years = £3,000 (indicative).
- Week 13: CoS reference number sent to the candidate.
- Week 14: Candidate submits online visa application. IHS paid. Biometrics appointment attended at local Visa Application Centre.
- Week 17: Visa granted. BRP collection letter issued to UK address.
- Week 19: Candidate arrives; right to work check completed on day one; employment begins.
Total elapsed time from licence application to first day of work: approximately 19 weeks (roughly five months). Employer-side costs in this example: licence fee plus CoS fee plus ISC, totalling approximately £4,715 before any legal or advisory fees — illustrative only.
A Note for Job Seekers
If you are a worker navigating this process, your primary task during stages 1 through 5 is to supply accurate personal information to your employer quickly and completely. Errors in your name, date of birth, or passport number on the CoS will cause delays or refusals.
Before accepting an offer, use the Register of Licensed Sponsors to confirm your employer holds a current licence. If they claim to be in the process of applying, understand that you cannot submit your visa application until the licence is granted and a CoS is assigned — factor that into your planning.
For guidance on how to approach sponsorship conversations with prospective employers, see How to Ask an Employer About Visa Sponsorship (2026).
Where to Get Help
The Home Office publishes detailed sponsor guidance documents — Worker and Temporary Worker guidance — that set out every duty in full. These documents run to several hundred pages and are updated periodically. They are the primary source.
For questions that turn on eligibility, compliance risk, or complex immigration history, engage a licensed immigration solicitor or an OISC-regulated adviser at Level 2 or above. The Office of the Immigration Services Commissioner (OISC) maintains a searchable register of regulated advisers at gov.uk/find-an-immigration-adviser.
This guide covers the UK Skilled Worker route as its primary focus. Sponsorship processes in other countries — Australia's Temporary Skill Shortage visa, Germany's Fachkräfteeinwanderungsgesetz pathways, Canada's Temporary Foreign Worker Programme — operate under entirely different frameworks with their own sponsoring bodies, forms, and compliance requirements. If you are exploring international options, our country-specific job guides provide entry points into those markets.