
Study Abroad Content Specialist
CAS Letter UK or Confirmation of Acceptance for Studies Letter: A CAS (Confirmation of Acceptance for Studies) is an electronic document that UK universities issue once you accept an unconditional offer and pay the required acceptance/ deposit. It contains a unique CAS number and key details including your name, program, course dates and the university’s sponsorship information. You must include a CAS Letter in your UK student visa application. Without it, your visa application will be rejected. UK Universities only issue a CAS letter after you have met their academic and financial conditions. Hence, a CAS letter for UK is treated as an official confirmation that, you have been offered a place to study in the UK.
Check Out: Requirements for Study Visa in UK

What is a CAS Letter?
A UK CAS letter is an electronic document that contains a 14-digit reference number unique to each student. Issued by the university after you accept an unconditional offer and complete the necessary financial procedures, the CAS letter includes the following information:
- Student details: Full name, date of birth, passport number.
- Course details: Program title, course duration, and start/end dates.
- Financial details: Tuition fees, payments already made, scholarships (if applicable).
- Academic qualifications: Previous academic credentials and English language proficiency scores (e.g., IELTS, TOEFL).
CAS Letter Components
Here’s a breakdown of the components of the CAS letter:
- 14-digit CAS reference number
- Sponsor Licence Number (SLN) of your university
- Sponsor’s address (university location)
- Academic qualifications that secured your admission
- Course start and end dates
- Your passport details (number and full name as in passport)
- Official course title
- Tuition fees (for the first year or full course)
- Tuition fees already paid to the university
- Accommodation fees already paid, if any
- English language proficiency evidence (IELTS/ TOEFL or equivalent)
A CAS Letter UK sample is given below
Additionally, there’s a Combined CAS number that is issued to students enrolled in more than one course at the same university. This number allows the student to apply for one visa that covers both courses.
Why is a CAS Letter Required?
A CAS letter is a mandatory requirement for a UK student visa (previously Tier 4). Here’s why it’s crucial:
- Confirms you are a genuine student.
- Proves your relationship with the sponsoring university.
- Serves as an official document required by UK Visas & Immigration (UKVI) for processing your UK student visa.
CAS Letter UK Requirements and Validity
To apply for a CAS letter, you must meet certain requirements:
- Academic transcripts and mark sheets.
- A valid passport.
- Proof of sufficient funds (financial documents).
The CAS letter is valid for six months and should be used for the visa application within that period. It’s important to note that the CAS can only be used for one visa application.
CAS Letter UK Processing Time
The time it takes to receive your CAS letter depends on the university’s policies:
- Standard processing: 2-5 working days.
- Peak season (June-September): Up to 2 weeks.
- Emergency requests: 24-48 hours (based on university policies).
CAS letters are issued 90 days before the course starts, depending on the university. For example, Coventry University CAS letter time is around 7 to 10 working days, after offer acceptance. Hence, it’s advisable to apply well in advance to avoid any last-minute complications.
Check Out: UK Student Visa Processing
Understanding the CAS Number
The CAS number plays a significant role in the UK visa process. Here are some key facts about it:
- It’s a 14-digit unique identifier linked to your visa application.
- It can only be used for one visa application.
- It’s directly connected to the UK immigration database, ensuring smooth processing.
General CAS Letter Issuing Procedure
The process for obtaining a CAS letter typically involves the following steps:
- The UK university sends a CAS email to the student’s registered ID.
- Student logs in via the link provided.
- CAS statement option appears on the portal.
- Sometimes, students must request a CAS by uploading required documents (financial proof, academics, TB/ATAS certificates).
- After submission, a link directs them to their CAS statement.
- Students review details, add extra information if needed, and verify accuracy.
- Errors must be reported to admissions via email for correction.
- Once verified, the final CAS statement and CAS number are sent by email.
Applying for a Visa with a CAS Number
It is important to apply for a UK student visa within 6 months of receiving your CAS. Once you have your CAS number, follow these steps to apply for your UK student visa:
- Receive the CAS number from your university.
- Prepare supporting documents, such as financial evidence and academic qualifications.
- Complete the online visa application.
- Schedule a biometric appointment.
- Submit the application package and wait for the visa approval.
Also Check: Travel and Accommodation in UK
What to Do if the CAS Letter is Delayed?
If you face delays in receiving your CAS letter, here’s what you can do:
- Contact your university’s international office immediately.
- Check your email spam/junk folders for any missed communication.
- Ensure you have submitted all required documents.
- Request expedited processing if possible.
- Keep records of all communications with the university.
How to Apply for a CAS Letter?
To apply for a CAS letter, follow these steps:
- Accept the unconditional offer from your university.
- Submit your documents, such as passport details, academic certificates, and proof of English proficiency.
- Complete the pre-CAS interview, if required.
- Pay the deposit (if applicable).
- Wait for the university to process your CAS application and send you the CAS letter.
Must Read: UK University Application Deadlines
Important Insights and Tips
Here are the important things you need to consider while applying and submitting documents required for CAS letter in UK.
- Some universities, particularly for undergraduate programs, don’t require an initial deposit for CAS.
- Pre-CAS interviews are becoming increasingly common, covering topics such as study plans, finances, and career aspirations.
- Document verification can take longer during peak seasons, so apply early to avoid delays.
- CAS deadlines vary based on university intake. For September intake, you should apply by July, for January intake by November, and for May intake by March.
The CAS process is your first step toward studying in the UK. With Indian students having a 98% visa success rate when applying with a valid CAS, thorough preparation is essential. Make sure your UK visa documents are in order, stay in regular contact with your university, and apply as early as possible to minimize any risks of delay. A smooth CAS process ensures a successful visa application, bringing you one step closer to your academic journey in the UK.
FAQs
Ques. What should I do if my CAS letter contains incorrect information?
Ans. If you notice any discrepancies in your CAS letter, contact your university immediately to request corrections. Incorrect information can lead to delays or rejection of your visa application.
Ques. Is the CAS letter enough to prove financial capability for the UK visa application?
Ans. No, while the CAS letter contains details about tuition fees and payments, you still need to provide separate financial documents (like bank statements) showing that you have enough funds to cover your living expenses in the UK.
Ques. Can I use a CAS letter from one university to apply for a visa if I’ve decided to attend another university?
Ans. No, the CAS letter is specific to the university that issues it. If you decide to attend a different institution, you will need a new CAS letter from the new university.
Ques. Do I need to submit the CAS statement with my visa application, or is the CAS number enough?
Ans. You only need to provide the 14-digit CAS number in your visa application. The CAS statement itself is not required but can help you check the details the university submitted to the UKVI.
Ques. Can I apply for my UK student visa without a CAS letter?
Ans. No, you cannot apply for a UK student visa without a CAS letter. The CAS letter is essential for proving that you have been accepted by a recognized UK institution and is required by UKVI.
Ques. Can my CAS letter be used for visa applications if I defer my admission to the next intake?
Ans. No, if you defer your admission, your CAS letter will no longer be valid. You will need to request a new CAS letter from your university for the new intake.

























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