Sponsor Licence vs EOR vs Contractor: Which Is Best for Hiring International Talent in the UK?
Hiring international talent in the UK typically involves either a Sponsor Licence or engaging workers as contractors. A sponsor licence is the only compliant way to employ non-UK residents who require a visa, giving you full control but requiring setup and ongoing compliance. An Employer of Record (EOR) can simplify payroll and employment in some cases, but cannot sponsor visas on your behalf in the UK, so it is not a solution for hiring overseas candidates who need immigration permission. Contractors offer speed and flexibility, but come with tax and misclassification risks under IR35. The right approach depends on whether the worker needs a visa, your hiring scale, and your risk tolerance.
Dhruti Thakrar
Dhruti Thakrar is a leading UK immigration solicitor and partner at Keystone Law, with over 28 years of experience advising multinationals, blue-chip firms, startups, and high-net-worth individuals. Recognized by The Legal 500, she specializes in both corporate and personal immigration law, sponsor licence compliance, and complex casework.
Hiring someone in the UK sounds straightforward until you start looking into it.
One search leads to another. Sponsor Licence. Employer of Record. IR35. Right to work checks. Certificate of Sponsorship. Suddenly what felt like a simple hire looks like a compliance minefield.
You are not alone. Thousands of overseas businesses face exactly this every year, and most get their first call wrong because they did not know the options before they committed.
There are three routes available to you: applying for a UK Sponsor Licence, using an Employer of Record (EOR), or engaging someone as a contractor. Each works differently, costs differently, and carries different immigration and legal obligations.
This guide explains all three in plain English, flags the common mistakes, and helps you work out which route fits your situation before you spend a penny.
Quick Comparison: Sponsor Licence vs EOR vs Contractor
Sponsor Licence
- Right to work: Yes (visa required)
- Control over hire: Full control
- Speed to hire: 8–12 weeks
- Compliance: You manage
- Immigration route: Skilled Worker Visa
- Cost: Moderate–High
- Best for: Long-term, permanent hires
Employer of Record (EOR)
- Right to work: Yes (via EOR)
- Control over hire: Shared
- Speed to hire: 2–4 weeks
- Compliance: EOR manages
- Immigration route: No visa needed
- Cost: High (EOR fees)
- Best for: Testing the UK market
Contractor
- Right to work: Check IR35
- Control over hire: Limited
- Speed to hire: Immediate
- Compliance: Worker manages
- Immigration route: No visa (if genuine)
- Cost: Low–Moderate
- Best for: Project-based work
Not sure which route is right for you? Read on where we break down each option in full below.
Option 1: Apply for a UK Sponsor Licence
What is a Sponsor Licence?
A Sponsor Licence is official permission from the UK Home Office for your organisation to hire overseas workers. Without one, you cannot lawfully sponsor someone on a Skilled Worker visa, which is the most common work visa route for overseas hires.As an overseas company, you can absolutely apply for a UK Sponsor Licence. You do not need a UK entity in all cases, though having a UK presence (or establishing one) is typically required to demonstrate genuine UK operations.
How it works
• You apply to the Home Office for a Sponsor Licence
• Once approved, you issue a Certificate of Sponsorship (CoS) to your employee
• Your employee uses the CoS to apply for a Skilled Worker visa
• They can then legally work for you in the UK
Timeline
Standard processing: 8 weeks
Priority processing: 10 working days (additional fee applies)
Costs
• Sponsor Licence application fee: £536 (small/charitable sponsors) or £1,476 (medium/large)
• Certificate of Sponsorship fee: £239 per worker
• Immigration Skills Charge: £364/year (small) or £1,000/year (large) per worker
• Skilled Worker visa fee: paid by the employee (£719–£1,639 depending on length)
Ongoing responsibilities
Holding a Sponsor Licence comes with compliance obligations. You must:
• Keep records for every sponsored worker
• Report changes to their role, salary, or circumstances to the Home Office
• Carry out right-to-work checks
• Cooperate with any Home Office audits
I-Migrator tip: Many overseas employers are put off by the compliance requirements but with the right platform and guidance, it's very manageable. I-Migrator's solicitors handle the full application and set you up with ongoing compliance tools.
Best for
• Companies making long-term, permanent hires
• Businesses scaling a UK team over time
• Roles that are highly skilled and meet the salary threshold. See our Skilled Worker Visa Salary Calculator to check the minimum salary required for your employee.
Option 2: Use an Employer of Record (EOR)
What is an Employer of Record?
An Employer of Record is a third-party organisation that legally employs your worker in the UK on your behalf. You direct the work; the EOR handles employment contracts, payroll, tax, and legal compliance.
This means the worker doesn't need a visa sponsored by you and they're employed by the EOR, which already has the legal infrastructure in place.
How it works
• You identify the person you want to hire
• The EOR employs them under a UK-compliant contract
• You pay the EOR a monthly fee (typically the worker's salary + 15–25% markup)
• The EOR handles PAYE, National Insurance, pension contributions, and HR admin
Timeline
Typically 2–4 weeks to get someone started, which is much faster than a Sponsor Licence
Costs
EOR services are more expensive on a per-head basis than direct employment. Expect to pay:
• £400–£800/month per employee in EOR fees (on top of salary and employer NI)
• Some EORs charge a setup fee per hire
Limitations
• You don't directly employ the worker, which can create friction around culture, loyalty, and IP ownership
• Less control over employment terms
• Not cost-effective for large teams or long-term hires
• The EOR may not specialise in immigration, and if the worker needs a visa, you're back to square one
Important: EOR works well when the person you're hiring already has the right to work in the UK (e.g. British citizen, settled status). If they need a work visa, an EOR won't solve the immigration problem, you'll still need a Sponsor Licence.
Best for
• Testing the UK market before committing to a full entity
• Hiring one or two people quickly
• Workers who already have UK right to work
Option 3: Hire as a Contractor
What is contractor hiring?
Rather than employing someone, you engage them as a self-employed contractor or through their limited company. The contractor is responsible for their own tax, National Insurance, and employment status.
The IR35 problem
This is where many overseas companies get caught out. IR35 is UK tax legislation designed to prevent 'disguised employment', where someone is effectively an employee but paid as a contractor to avoid tax.
If your contractor engagement looks and feels like employment (same hours, same supervision, same role), HMRC may rule it inside IR35 making you liable for unpaid PAYE and NI contributions, plus penalties.
Immigration considerations
Contractors with a genuine right to work in the UK can work freely. However:
• A foreign national on a Student Visa or Visitor Visa cannot legally work as a contractor
• Someone on a Skilled Worker Visa tied to another employer cannot work for you without a change of sponsorship
• There is no contractor-specific visa route in the UK
Bottom line: Contractor arrangements are genuinely useful for project-based, short-term engagements with UK-based workers who have the right to work. They are not a shortcut around immigration requirements.
Best for
• Short-term or project-based work
• Specialists with clearly defined deliverables
• Workers who are genuinely self-employed and already have UK right to work
Which Option Is Right for You?
Choose a Sponsor Licence if...
• You want to hire a specific person who needs a UK work visa
• You're building a permanent UK team
• You want full control over employment terms and HR
• The role meets the Skilled Worker salary threshold
Choose an EOR if...
• The person you're hiring already has UK right to work
• You want to move quickly and test the UK market
• You only need one or two hires in the short term
• You don't want to deal with UK payroll and employment law directly yet
Choose contractor if...
• The engagement is genuinely project-based and time-limited
• The contractor is clearly self-employed and has UK right to work
• You've taken proper IR35 advice
Common Mistakes Overseas Employers Make
• Assuming EOR solves the visa problem. It doesn't — EOR and immigration are separate issues.
• Underestimating IR35 exposure. HMRC actively pursues overseas companies with UK contractors.
• Starting the Sponsor Licence process too late. The 8-week timeline means planning ahead is essential.
• Not registering with HMRC. Even if you use an EOR, you may have UK tax obligations as an employer.
• Sponsoring a role below the salary threshold. The Skilled Worker visa has strict minimum salary requirements that vary by occupation code.
How I-Migrator Can Help
I-Migrator is a UK immigration platform built by SRA-regulated solicitors with over 30 years of experience. We specialise in helping businesses, including overseas companies and navigate the UK immigration system with confidence.
For employers pursuing the Sponsor Licence route, we offer:
• Full Sponsor Licence application support
• Certificate of Sponsorship guidance
• Skilled Worker visa assistance for your new hire
• Ongoing compliance tools to keep your licence in good standing
• Expert document review with feedback
Our platform is designed to make a complex process straightforward, so you can focus on building your UK team, not navigating Home Office paperwork.
Ready to Hire in the UK? I-Migrator's SRA-regulated immigration solicitors can guide you through the sponsor licence process from start to finish.
Apply for a Sponsor Licence → Start your Sponsor Licence Eligiblity Check.
Frequently Asked Questions
Can an overseas company get a UK Sponsor Licence without a UK office?
Technically yes, but the Home Office will expect to see evidence of genuine UK operations. Having a UK entity or registered address strengthens your application considerably. i-migrator can advise on the right setup for your circumstances.
How long does a Sponsor Licence last?
A Sponsor Licence is granted for four years initially, after which you renew it. As long as you maintain compliance, renewal is straightforward.
Can I use an EOR and a Sponsor Licence at the same time?
Yes, some businesses use an EOR for workers who already have right to work, while simultaneously applying for a Sponsor Licence for workers who need visa sponsorship. This lets you hire quickly now while building longer-term infrastructure.
What is the minimum salary for a Skilled Worker visa in 2026?
The general threshold is £41,700 per year, or the 'going rate' for the specific occupation code, whichever is higher. Some shortage occupations have different thresholds. I-Migrator's Skilled Worker Salary Calculator will give you an instant answer based on the specific role.
What happens if I get IR35 wrong?
HMRC can issue retrospective tax demands, penalties, and interest. As the 'end client', an overseas company engaging UK contractors can be held liable for unpaid PAYE and National Insurance. Always take specialist advice before engaging contractors.