UK Student Visa Funds in 2026: 7 Evidence Mistakes to Avoid

Current UK Student visa maintenance figures, the 28-day rule, and seven evidence mistakes that can put an otherwise strong application at risk.

Source check completed: 13 July 2026

Preparing the financial evidence for a UK Student visa is not simply a matter of showing a positive bank balance. The amount, timing, source and wording of the evidence all matter.

The current UK rules require most applicants to show enough money for any outstanding course fees stated on their Confirmation of Acceptance for Studies (CAS), plus living costs of:

• £1,529 per month for study in London, for up to nine months; or
• £1,171 per month for study outside London, for up to nine months.

For a course lasting nine months or longer, that means up to £13,761 for London or £10,539 outside London, before adding any outstanding course fees. The exact amount depends on your circumstances, so use the figures and instructions on the current GOV.UK pages rather than an old checklist or social-media post.

Here are seven avoidable mistakes that can weaken or derail an application.

1. Budgeting with an old maintenance figure

Visa figures change. A bank balance that met an older threshold may no longer be enough when you apply.

Start with the current monthly figure, multiply it by the number of months in your course up to a maximum of nine, and then add any course fees still outstanding on your CAS. If the course includes part of a month, the rules round that period up to the next full month.

Do the calculation again shortly before the 28-day holding period begins. This gives you time to correct a shortfall without rushing the application.

2. Breaking the 28-day holding period

Where the 28-day rule applies, the required funds must be held for 28 consecutive days. The end of that period must also fall within 31 days before the date of the visa application.

A single day below the required amount can break the period. Common causes include bank charges, standing orders, exchange-rate movement or moving funds between accounts too late.

Keep a safety margin above the minimum. If the balance drops below the requirement, restart the count and wait until a new complete 28-day period has passed before applying.

3. Treating every bank document as acceptable evidence

A screenshot of a mobile-banking balance, an informal letter or an account that does not meet the official evidence rules may not prove what you think it proves.

Before relying on an account or document, check the current financial evidence guidance for Student visa applicants. Make sure the evidence identifies the account holder and financial institution, shows the required dates and balances, and comes from an acceptable source.

If any document is not in English or Welsh, check the official requirements for translations. Do not edit a bank document yourself or submit anything that could appear altered.

4. Forgetting to reconcile the evidence with the CAS

Your financial calculation begins with the course fees shown on the CAS. If you have already paid some tuition fees, the payment normally needs to be recorded on the CAS or supported by an acceptable receipt from the student sponsor.

Do not assume a payment automatically reduces the amount you must show. Compare the CAS, receipts and bank evidence line by line before submitting the application.

Accommodation payments also have specific rules and limits. Only make a deduction when the current rules clearly allow it and the payment is properly evidenced.

5. Assuming “differential evidence” means “no evidence needed”

Some applicants do not have to upload financial evidence at the start because they qualify under the differential evidence arrangements. However, UK Visas and Immigration can still ask for it before making a decision.

If this applies to you, prepare the evidence anyway and keep it available. Do not spend the required funds immediately after applying without first understanding the rules that apply to your case.

6. Using an incomplete loan or sponsorship letter

Student loans and official financial sponsorship can meet the financial requirement, but the supporting letter must contain the required information.

For example, the current Appendix Finance rules say a student-loan letter must be no more than six months old and must confirm details including the loan amount, that the loan is to the applicant, the nature of the lender and when the funds will be available. Official sponsorship must also be evidenced in the required way, such as through the CAS or a confirmation letter.

Ask the lender, sponsor or university to correct missing wording before you apply. A genuine source of funding can still create a problem if the document does not prove it in the required form.

7. Preparing the finances but not the genuine-student explanation

A Student visa application is not assessed on money alone. The Immigration Rules require the applicant to be a genuine student. A caseworker may consider the application and, where applicable, answers given in a credibility interview.

Be ready to explain in your own words:

• why you chose the course and institution;
• how the course fits your previous study or experience;
• how it supports a realistic career plan;
• how you will fund tuition and living costs; and
• what you understand about the course and study destination.

Do not memorise a script supplied by someone else. Inconsistent or vague answers can undermine an otherwise well-prepared file.

A practical pre-application check

Before submitting, complete this final review:

1. Recalculate the requirement using the current GOV.UK figures.
2. Check the outstanding course-fee amount on the CAS.
3. Confirm the full 28-day period and 31-day timing window where applicable.
4. Check that every bank, loan or sponsorship document meets the current format rules.
5. Keep copies of the evidence, even if differential evidence arrangements mean it is not requested initially.
6. Review your course choice, funding plan and career explanation in your own words.
7. Check whether you also need evidence such as a valid tuberculosis certificate or ATAS approval for your circumstances.

Official sources

• GOV.UK: Student visa — money you need
• GOV.UK: Financial evidence for Student and Child Student visa applicants
• GOV.UK: Immigration Rules — Appendix Student
• GOV.UK: Immigration Rules — Appendix Finance
• GOV.UK: Student and Child Student caseworker guidance

Rules can change after publication. Always recheck the official sources for the requirements in force on the date you apply. UniDoxia provides educational guidance and application support, not legal advice, and no adviser can guarantee a visa outcome.

Talk to the UniDoxia team about preparing your study-abroad application.