USA I-20 vs UK CAS 2026: Pakistani Students’ Ultimate Guide
Planning to study abroad in 2026? Pakistani students often get confused between the USA I-20 and the UK CAS. Both documents are important for student visa applications, but they work differently. This guide explains what I-20 and CAS mean, how they affect your visa, what documents you need, and which route may be better for your profile.
USA I-20
Issued by a SEVP-approved school after admission. It supports your F-1 or M-1 student visa application.
UK CAS
Issued by a UK licensed student sponsor. It is required before applying for a UK Student Visa.
Main Rule
I-20 or CAS is not a visa approval. Your visa still depends on funds, documents and credibility.
What Is the USA I-20?
The I-20 is a Certificate of Eligibility for Nonimmigrant Student Status. It is issued by a SEVP-approved school in the United States after you receive admission and the school enters your information into SEVIS. Pakistani students normally use the I-20 to apply for an F-1 student visa for academic study or an M-1 visa for vocational study.
Your I-20 contains important information such as your school name, SEVIS ID, course level, programme start date, estimated tuition, living expenses and funding details. You must keep your I-20 safe because it may be required for your visa interview, travel and student status record.
What Is the UK CAS?
CAS means Confirmation of Acceptance for Studies. It is issued by a UK licensed student sponsor after you meet the university’s conditions, pay the required deposit if applicable, and the university is ready to sponsor your Student Visa application.
Your CAS includes your course details, university licence information, tuition fee, payment or scholarship details, English language assessment and your personal information. UKVI uses the CAS to verify that you have a genuine offer from a licensed institution.
USA I-20 vs UK CAS: Quick Comparison for Pakistani Students
```| Point | USA I-20 | UK CAS |
|---|---|---|
| Full Meaning | Certificate of Eligibility for Nonimmigrant Student Status | Confirmation of Acceptance for Studies |
| Issued By | SEVP-approved school in the USA | UK licensed student sponsor/university |
| Visa Type | F-1 or M-1 student visa | UK Student Visa |
| System | SEVIS-based student record | UKVI sponsorship system |
| Visa Application Form | DS-160 for nonimmigrant visa | UK Student Visa online application |
| Main Extra Fee | SEVIS I-901 fee plus visa application fee | Visa fee plus Immigration Health Surcharge |
| Financial Focus | Ability to pay tuition, living and travel costs | Course fee plus required maintenance funds |
| Visa Interview | Usually required for Pakistani applicants | Credibility interview may be required in some cases |
| Document Guarantee? | I-20 does not guarantee F-1 visa approval | CAS does not guarantee Student Visa approval |
Which One Is Easier: USA I-20 or UK CAS?
```I-20 Route
The USA route can be attractive because of strong universities, research opportunities, scholarships and Optional Practical Training options. However, the visa interview is very important. You must clearly explain your academic plan, funding source, university choice and intention to return after studies.
CAS Route
The UK route is popular because many master’s degrees are one year, the process can be more structured, and post-study options are clear through the Graduate Route if eligible. However, your CAS, funds, TB test and documents must be accurate.
Simple answer: USA may be better for students looking for research, scholarships and long-term academic growth. UK may be better for students who want a shorter study route, structured visa process and faster course completion.
```USA I-20 Process: Step-by-Step
```Apply to a SEVP-Approved School
First, you apply to a school that is approved to enrol international students. After admission, the school reviews your academic documents and financial proof.
Receive Your Form I-20
Once the school accepts you and enters your information into SEVIS, it issues your I-20. You should check your name, date of birth, programme, start date and funding details carefully.
Pay SEVIS I-901 Fee
Before your visa interview, you normally pay the SEVIS I-901 fee. Keep the receipt because it may be required during the visa process.
Complete DS-160 and Book Visa Interview
After receiving your I-20, you complete the DS-160 form, pay the visa application fee and schedule your F-1 visa interview at the U.S. Embassy or Consulate.
Attend Interview with Clear Answers
You should be ready to explain why you chose the USA, why this university, why this course, who is funding you and what your future plan is after completing studies.
UK CAS Process: Step-by-Step
```Get Admission from a UK University
You apply to a UK university, submit academic documents, English evidence if required, passport and other documents according to the course requirements.
Meet Conditions and Pay Deposit
If your offer is conditional, you must meet the conditions first. Many universities also require a deposit before issuing CAS.
Receive and Check Your CAS
Check your CAS carefully. Your name, passport number, course title, tuition fee, payments, scholarship and English language information should be correct.
Prepare Funds and Visa Documents
You normally need to show course fee and living cost funds. For UK Student Visa, funds must meet strict timing and evidence rules. Pakistani students also usually need a TB certificate for courses longer than 6 months.
Submit Student Visa Application
After CAS and documents are ready, you submit the online visa application, pay the visa fee and IHS, then complete biometrics or identity verification as required.
Cost Comparison: USA I-20 vs UK CAS Route
| Cost Area | USA I-20 / F-1 Route | UK CAS / Student Visa Route |
|---|---|---|
| Main Visa Fee | F visa category application fee is commonly $185 | UK Student Visa fee is £558 |
| Extra Mandatory Fee | SEVIS I-901 fee for F/M students is commonly $350 | IHS for students is £776 per year |
| Financial Proof | Must show ability to pay educational, living and travel costs | Course fee plus London/outside London maintenance funds |
| Healthcare Cost | Usually depends on university health insurance and state/campus rules | IHS gives access to NHS services after visa starts, with some limits |
| Timeline Pressure | Interview appointment and administrative processing can affect timing | CAS timing, funds timing and decision time can affect intake |
Important Advice for Pakistani Students
Do not treat I-20 or CAS as a final visa approval. Both documents only support your visa application. Your final result depends on your profile, documents, funds, interview answers, immigration history and whether your study plan looks genuine.
Common Mistakes Pakistani Students Should Avoid
```Which Country Should You Choose in 2026?
```| Your Priority | Better Option | Reason |
|---|---|---|
| Shorter master’s degree | UK | Many UK master’s programmes are completed in one year. |
| Research and scholarships | USA | The USA has many universities with research and assistantship opportunities. |
| Structured visa documentation | UK | CAS, funds and documents follow a clear Student Visa route. |
| Strong interview confidence | USA | Good option if you can explain your study plan and funding clearly. |
| Lower uncertainty in travel timing | Depends | Both routes require early planning, correct documents and intake timing. |
Checklist Before Applying
Your course should connect with your previous study and career plan.
Your financial documents should be genuine, clear and easy to explain.
Check name, passport, course, fee, start date and funding details.
Prepare natural answers about university, course, sponsor and future goals.
Keep academic documents, passport, financial proof and translations ready.
Apply early because appointments, CAS, I-20 and decisions can take time.
FAQs: USA I-20 vs UK CAS 2026
```Is I-20 the same as a USA student visa?
No. I-20 is not a visa. It is an eligibility document issued by a SEVP-approved school. You still need to apply for an F-1 or M-1 visa.
Is CAS the same as a UK Student Visa?
No. CAS is not a visa. It is a sponsorship confirmation from a UK licensed student sponsor. You still need to submit and get approval for your Student Visa application.
Which is better for Pakistani students: USA or UK?
It depends on your budget, course, scholarship, career goals and visa profile. USA can be better for research and long-term academic opportunities, while UK can be better for shorter courses and structured study routes.
Can I apply for USA visa without I-20?
For F-1 or M-1 student visa, you need Form I-20 from a SEVP-approved school before applying.
Can I apply for UK Student Visa without CAS?
No. CAS is a required document for the UK Student Visa application.
Watch Full Video Guide
Watch this video for a detailed explanation of USA I-20 vs UK CAS, study abroad planning and student visa guidance for Pakistani students.
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