Imagine receiving your university offer and realising that one document stands between you and your dream to study in the UK. That document is the Confirmation of Acceptance for Studies (CAS).
Getting accepted into a UK university is exciting, but your journey does not move forward until you receive this crucial document. Without a CAS number, you cannot submit your student visa application, no matter how strong your admission offer may be.
For international students, the CAS is a key step between receiving an offer letter and being able to apply for a student visa and travel to the UK. Universities issue the CAS only after confirming your admission, verifying your documents, and ensuring that you meet the immigration requirements set by UK Visas and Immigration.
This is why understanding the CAS process is so important. From knowing when universities issue a study CAS to preparing your visa application months before your course starts, every stage plays an important role in your study abroad journey.
In this guide, you will learn how to get a CAS letter, the eligibility requirements, expected timelines, required documents, and practical tips to help you complete your visa application smoothly and prepare to travel to the UK with confidence.
Also read: UK Study Guide for Indian Students (2026)
Table of Contents
What Is a CAS Letter for a UK Student Visa?
The Confirmation of Acceptance for Studies (CAS) is an electronic record issued by a UK university once a student receives and accepts an unconditional offer.
The CAS contains a unique reference number that must be entered when you submit your UK student visa application. Immigration officers use this number to verify that a licensed institution is sponsoring your studies.
The CAS is issued under the rules of UK Visas and Immigration, which regulates all visa applications for international students who want to study in the UK.
In simple terms, the CAS confirms the following:
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- A licensed UK university has offered you a place
- You have accepted the offer and met the admission requirements
- The university will act as your official sponsor during your studies
- You are eligible to apply for your visa
It is important to understand that the CAS is not a traditional letter. It is an electronic document linked to your visa application, and it contains detailed information about your course and admission.
What Information Is Included in a CAS?
When a university issues a CAS, it records detailed information about the student and the programme being undertaken. Immigration authorities review this information carefully during visa processing.
Your CAS statement typically includes several important sections.
1. Personal Details
This section contains key information about the student, including:
- full name
- passport number
- nationality
- date of birth
These details must match the information used in your visa application.
2. Course Information
The CAS also confirms the course you will study in the UK. This section includes:
- course title
- qualification level
- course duration
- course start and end date
- study mode
The course details are important because they determine the duration of your UK student visa.
3. Financial Details
Universities also include information about tuition fees and payments made by the student. This section may include:
- total tuition fees for the first year
- tuition deposit already paid
- accommodation fees paid to the university
These details help immigration officers assess the financial requirements for your visa.
4. Academic and English Language Requirements
The CAS also lists the academic documents used to assess your application. This may include:
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- previous academic qualifications
- transcripts or certificates
- proof of English language proficiency
Because your CAS and visa application must match exactly, students should always check the documents carefully before submitting their visa application.
Also read: IELTS vs TOEFL vs PTE: Which Is Best for the UK in 2026?
Why Is the CAS Important for a UK Student Visa?
The CAS plays a central role in the UK student visa process. Without it, international students cannot proceed with their visa application.
There are several reasons why the CAS is so important.
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It Is Required for Visa Applications
When you complete your visa form, you must enter the CAS number issued by your university. The immigration system uses this number to verify your admission.
Without a CAS number, it is not possible to apply for your visa.
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It Confirms Your Unconditional Offer
The CAS confirms that you have received an unconditional offer and that you meet all academic and language requirements for your chosen programme.
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It Allows Immigration Authorities to Verify Your Details
When reviewing visa applications, immigration officers use the CAS to confirm:
- The authenticity of the university sponsor
- The details of the course
- The academic qualifications submitted by the student
Because of these checks, universities require several compliance steps before issuing a CAS.
Who Is Eligible to Receive a CAS?
Not every applicant receives a CAS immediately after applying to a university. The CAS is issued only after certain eligibility conditions are satisfied.
You Must Have an Unconditional Offer
Most students first receive a conditional offer. This means they must still meet certain requirements, such as submitting final transcripts or English test results.
Once these requirements are fulfilled, the university converts the offer into an unconditional offer. Only then can the CAS be issued.
You Must Accept Your Offer
Students must confirm that they intend to enrol at the university. Undergraduate applicants typically do this through UCAS, while postgraduate applicants accept the offer directly through the university portal.
You Must Pay a Tuition Fee Deposit
Many universities ask international students to pay part of their tuition fees before issuing a CAS. This payment confirms that the student intends to join the course.
You Must Submit Academic Documents
Universities also verify the academic documents used during the admission process. These documents typically include:
- transcripts
- degree certificates
- passport copy
You Must Meet English Language Requirements
International students must demonstrate their ability to study in English through recognised tests such as IELTS or other approved exams.
Step-by-Step Process to Get a CAS Letter
Understanding the CAS process helps students prepare in advance and complete their visa applications without delays.
Step 1: Apply to a UK University
The process begins when you submit an application for a course at a UK university.
Many students seek expert guidance during this stage. Career Launcher’s UK study abroad experts help students shortlist universities, prepare applications, and submit complete documentation for UK admission.
You may also find it helpful to read Career Launcher’s guide on ow to Apply for UK Student Visa, which explains the entire process in easy steps.
Step 2: Receive and Meet Offer Conditions
Most students receive a conditional offer first. Universities may request additional documents, such as final academic transcripts or updated English language scores.
Once these conditions are satisfied, the university upgrades the offer to unconditional.
Step 3: Accept the Offer
Students must formally accept the offer to confirm their intention to study in the UK.
For undergraduate courses, this is usually done through UCAS.
Also read: UCAS Application Guide for Indian Students (2027 Intake)
Step 4: Pay Tuition Fee Deposit
After accepting the offer, students are often required to pay part of their tuition fees. This payment helps the university confirm enrolment and initiate the CAS request process.
Step 5: Submit CAS Request
Students are then asked to complete a CAS request through the university’s online portal. In this stage, students may need to:
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- Confirm personal details
- Upload financial documents
- Submit your passport and academic information
Step 6: Pre-CAS Checks and Credibility Interviews
Some universities conduct additional pre-CAS checks before issuing the CAS. These checks may include credibility interviews.
During these interviews, students may be asked about:
- their academic background
- reasons for choosing the course
- future career plans
These interviews help universities confirm that applicants genuinely intend to study in the UK.
Step 7: Receive Your CAS Number
After completing all verification steps, the university issues the CAS statement containing the unique CAS number.
Students can then proceed to apply for their UK student visa.
CAS Timeline: When Will You Receive It?
Planning your timeline correctly is essential for smooth visa processing.
When Universities Issue CAS
According to immigration rules, universities cannot issue a CAS more than six months before your course start date.
Most universities begin issuing CAS numbers three to six months before your course begins.
CAS Processing Time
CAS processing time varies depending on the university and the number of applications being reviewed.
In most cases, the process takes a few working days to two weeks after all required documents are submitted.
Delays may occur if:
- documents are incomplete
- financial evidence is missing
- additional verification is required
When You Can Apply for a Visa
Students outside the UK can submit their visa applications up to six months before the course start date.
Students applying from inside the UK can submit their application three months before the programme begins.
Documents Required for a CAS
Preparing documents early helps prevent delays in the CAS process.
International students typically need to provide:
- passport copy
- academic documents and transcripts
- English language test results
- financial documents showing proof of funds
- tuberculosis test certificate if required
- ATAS certificate for specific courses
Need Help with Your CAS Documents?
Career Launcher counsellors guide you in organising and verifying all required documents before starting your CAS request, ensuring a smooth and error-free process.
Book a 1-to-1 Session with a UK Expert →Financial Requirements for CAS
Some universities may request financial documents during the CAS stage to ensure that students meet immigration requirements.
These documents confirm that students can pay:
- their tuition fees
- living expenses in the UK
In many cases, funds must remain in the account for 28 consecutive days to meet the rules set by UK Visas and Immigration.
What Is a Pre-CAS Interview?
A pre-CAS interview is a credibility assessment conducted by some universities before issuing the CAS.
The interview helps confirm that the student understands the course and genuinely plans to study.
Students may be asked questions about:
- their academic background
- why they chose the university
- their future career goals
Preparing well for these credibility interviews can significantly improve the chances of receiving a CAS quickly.
Tips to Get Your CAS Faster
A few simple strategies can help speed up the CAS process.
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Accept Your Offer Early
Students who confirm their place early often receive their CAS sooner.
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Prepare Documents in Advance
Keep all academic documents and financial documents ready before starting the CAS request.
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Respond Quickly to University Requests
If the university requests additional information, responding quickly helps prevent delays.
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Check Your CAS Statement Carefully
Students should review their CAS statement carefully before submitting their visa applications to ensure that there are no errors.
Understanding the CAS process is an important step for any student planning to study in the UK. Once you receive your CAS number, you can confidently apply for your visa, complete your visa application, and prepare for your academic journey abroad.
How Career Launcher Helps You Study in the UK
Applying to universities abroad involves multiple steps, including university selection, application submission, CAS processing, and visa applications.
Career Launcher’s Study Abroad experts guide students throughout the process.
- university and course selection
- application and documentation support
- guidance for CAS request procedures
- assistance with UK student visa applications
Not Sure Where You Stand for UK Admissions?
Get a free profile analysis from Career Launcher experts and understand your chances, best-fit universities, and next steps for your UK application.
Book Free Profile Analysis →Recommended Reads
- How to Apply to UK Universities
- Understanding UK Intakes: September vs January vs May
- UK Application Deadlines & Timeline for 2027 Intake
- What to Pack for the UK: The Ultimate Checklist for Indian Students
Frequently Asked Questions (FAQs)
1. What is the CAS number used for?
The CAS number is required when submitting your UK student visa application. Immigration authorities use it to verify your admission and course details.
2. How long is a CAS valid?
A CAS is usually valid for six months from the date of issue, but it can be used only once for a visa application.
3. Can a university refuse to issue a CAS?
Yes. Universities may refuse to issue a CAS if documents are incomplete, financial requirements are not met, or the student does not pass credibility checks.
4. Can you apply for a UK student visa without a CAS?
No. The Confirmation of Acceptance for Studies (CAS) is mandatory for all international students applying for a UK student visa.
5. How long does CAS processing take?
If all documents are complete, universities usually issue a CAS within a few working days to two weeks.
6. What happens if there is a mistake in the CAS?
Students should immediately inform the university if they notice an error in the CAS statement before submitting their visa application.
