What Is a CAS Letter and How Do Pakistani Students Get One for the UK? (2026)

What exactly is a CAS?

A CAS is a Confirmation of Acceptance for Studies, an electronic record and reference number generated by a UK university licensed to sponsor international students. It proves to the UK Home Office that a recognised institution has offered you a place on a specific course and has confirmed you meet its academic and English requirements.

People still call it a CAS letter out of habit, but it is not really a letter anymore. Your university enters your details into the sponsorship system and sends you a CAS statement that shows the reference number, your course, your fees, and your personal details. You then enter that CAS number into your Student visa application. Without it, the visa system will not let you proceed.

Think of the CAS as the bridge between your admission and your visa. Your offer letter shows the university wants you. The CAS shows the university has formally sponsored you and told the Home Office so. Understanding this early saves a lot of confusion, especially when you are also budgeting for the whole journey using our guide on how much it costs to study in the UK from Pakistan.

Why do Pakistani students need a CAS?

The UK requires every international student to be sponsored by a licensed institution. The CAS is the proof of that sponsorship. When you fill in your Student visa application, one of the first things you enter is your CAS reference number. The Home Office uses it to pull up your course details, confirm your sponsor is licensed, and check that your file is genuine.

No CAS means no visa application. It is that simple. This is why the CAS sits at the centre of the whole UK process, and why the timing of your CAS affects your entire plan, including your bank statement for a UK student visa, which must meet strict maintenance rules tied to the fees shown on your CAS.

What information does a CAS contain?

Your CAS statement pulls together the key facts the Home Office needs. Check every field carefully, because an error here can sink your visa. A typical CAS includes:

• A unique CAS reference number.
• Your full name, date of birth, and nationality, exactly as in your passport.
• The name of your course and its level.
• Course start and end dates.
• Total tuition fee and any deposit you have already paid.
• Whether the course includes a work placement.
• The English language evidence the university accepted.
• Details of any scholarship or financial sponsorship.
• The university’s sponsor licence number.

If any detail is wrong, for example a misspelled name or an incorrect fee, ask the university to correct and reissue the CAS before you apply. A mismatch between your CAS and your passport or your bank statement is a classic reason for refusal.

How do Pakistani students get a CAS, step by step?

You get a CAS by accepting an unconditional offer, meeting every offer condition, paying any required deposit, and passing the university’s pre-CAS checks, after which the university issues your CAS number. Here is the full sequence for a Pakistani applicant.

1. Apply and receive an offer. Submit your application and receive either a conditional or unconditional offer from a UK university that holds a sponsor licence.
2. Meet the conditions. A conditional offer lists requirements such as a final transcript, a minimum English score, or a deposit. Clear each one to turn it into an unconditional offer.
3. Accept your place. Formally accept the unconditional offer and confirm you plan to enrol.
4. Pay the tuition deposit. Most universities ask for a deposit, often between 2,000 and 6,000 pounds, before they issue a CAS.
5. Complete the pre-CAS interview or check. Many universities run a short credibility interview or a document review to confirm you are a genuine student. Take this seriously.
6. Provide final documents. Share your passport copy, English test result, and any other requested evidence.
7. Receive your CAS. The university issues your CAS statement with its reference number, usually by email.
8. Apply for your Student visa. Enter the CAS number in your visa application within its validity window.

The pre-CAS interview surprises many applicants. It often covers why you chose the course, how you will fund your studies, and your plans after graduation. Preparing answers here overlaps closely with wider visa interview preparation, so it pays to be ready.

What does a university check before issuing a CAS?

Universities are careful with CAS numbers because their sponsor licence depends on only sponsoring genuine students. Before issuing your CAS, they usually confirm:

Academic eligibility

They verify your transcripts and degrees meet the course entry requirements. If you have a study gap, be ready to explain it clearly. Our guide on whether a study gap is acceptable for studying abroad from Pakistan helps you frame this well.

English language ability

They confirm your IELTS, PTE, or other accepted evidence meets both the university and Home Office requirements. Make sure your test is one the university accepts for visa purposes.

Financial credibility

Some universities check that you understand the maintenance funds you must show and that your funding looks realistic. This links directly to your visa bank statement.

Genuine student credibility

Through the interview or a written check, they assess whether you are a real student with a clear plan, not someone using the course as a route to something else.

Does a CAS cost money?

The CAS itself does not carry a separate fee. Universities do not charge you simply to generate the number. What you do pay is the tuition deposit that usually must clear before the CAS is issued. That deposit is not an extra cost, it is an advance on your tuition, and it appears on the CAS as an amount already paid, which then reduces the maintenance funds you must show.

Beyond the deposit, your real UK costs are the visa fee and the healthcare surcharge. We break those down fully in our guide on how much a UK student visa costs from Pakistan. Budget for all of these together so the deposit does not catch you off guard.

How long does it take to get a CAS?

Once you have met all conditions and paid your deposit, a CAS usually arrives within a few days to about two weeks, though it can take longer at peak intake times. The delay is rarely the CAS generation itself. It is the steps before it, such as clearing conditions, arranging the deposit, and completing the interview.

Here is a realistic timeline for a September intake:

Because the visa itself also takes time, an early CAS gives you breathing room. See our guide on how long a UK student visa takes from Pakistan to plan the full runway.

Do I have to pay a tuition deposit first?

In most cases, yes. Universities want a financial commitment before they issue a CAS, both to secure your place and to protect their sponsor licence. Deposits commonly range from 2,000 to 6,000 pounds, though some scholarship holders and fully funded students are exempt.

Keep the payment receipt. The deposit amount is recorded on your CAS, and it lowers the maintenance balance you must show for your visa. If a university offers you a scholarship that covers part of your tuition, that will also appear on the CAS and reduce your required funds. For funding options, our list of best scholarships to study in the UK for Pakistani students is worth reading before you pay a large deposit.

What happens after I receive my CAS?

Once your CAS arrives, the clock starts. A CAS is valid for a limited window, usually six months, and you must apply for your Student visa before it expires. After receiving your CAS you should:

1. Check every detail on the CAS against your passport and offer.
2. Prepare your maintenance funds so the balance meets the rule for the fee shown on your CAS.
3. Complete your online Student visa application and pay the visa fee and healthcare surcharge.
4. Book and attend your biometrics appointment at the visa centre.
5. Submit supporting documents such as your bank statement, passport, and English result.
6. Wait for the decision, then plan travel and accommodation.

After you arrive and start studying, you may be able to work part time within visa limits. Our guide on part-time work for Pakistani students in the UK explains how many hours you are allowed.

What mistakes delay or cancel a CAS?

Watch for these common problems:

• Errors on the CAS. A wrong name, date, or fee can cause refusal. Always verify and request corrections early.
• Missing the deposit deadline. No deposit usually means no CAS. Arrange funds before the cut off.
• A weak pre-CAS interview. Vague answers about your course or funding raise doubts about whether you are a genuine student.
• Unaccepted English tests. Using a test the university cannot accept for visa purposes stalls the CAS.
• Applying to unlicensed institutions. Only universities with a sponsor licence can issue a CAS. Confirm this before you commit.
• Leaving it too late. A late CAS squeezes your visa timeline and risks missing the intake.

A realistic example: Bilal from Faisalabad

Bilal, a BSc graduate from Faisalabad, applied to three UK universities for a masters in data science. He received a conditional offer from his first choice, with two conditions: submit his final transcript and score IELTS 6.5. He cleared both by April and accepted the unconditional offer.

The university asked for a 3,000 pound tuition deposit before issuing his CAS. He paid it in early May and kept the receipt. A week later he had a short pre-CAS video interview, where he explained why he chose the course, how his family would fund the studies, and his plan to work in analytics after graduating. He answered clearly and honestly. His CAS arrived four days later. He checked every field, confirmed his name and date of birth matched his passport, and saw that the 3,000 pound deposit was recorded, which lowered the maintenance balance he had to show. He applied for his Student visa the same week, well inside the CAS validity, and received it in time for the September intake.

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