Caltech Admission Guide 2027: Requirements, Deadlines, Aid and Costs for International Students
Caltech admission is small, scientific and very selective: only a few hundred students enrol each year. This Caltech Admission Guide 2027 explains the Restrictive Early Action and Regular Decision rounds, the required SAT or ACT, what the need-aware rule means for international families, the 2026–27 cost of attendance and the visa steps, using Caltech and other official sources checked in October 2026. For rankings and a quick overview, see our Caltech profile page.
Caltech QS Ranking 2027 and Why Size Matters
Caltech is 7th in the QS World University Rankings 2027, and it reaches that position with fewer than 1,000 undergraduates. Its research profile is out of proportion to its size, and it manages NASA’s Jet Propulsion Laboratory. Small classes and close contact with researchers are the main reasons applicants choose it over larger schools such as the MIT route.
Compare it with every other top university in our World’s Top 100 Universities directory.
What Is the Caltech Acceptance Rate?
Caltech’s own Class of 2029 figures show 427 admitted students from 11,285 applicants, which is about 3.78%. A small class means every place is contested, and international applicants face an extra aid constraint (below).
Caltech Admission Requirements for International Students
- Application: submitted through the Common Application with Caltech’s own questions.
- SAT or ACT: required for first-year applicants.
- Strong mathematics and science: Caltech expects advanced work in maths, physics and chemistry or biology.
- Recommendations: teacher evaluations that speak to your curiosity and problem solving.
- International interview: Caltech recommends an InitialView interview for all international applicants.
- Translations: non-English documents need translations.
SAT, ACT and English Proficiency for Caltech
Caltech requires either the SAT or the ACT and has dropped the old Subject Test requirement. International applicants are also expected to show English proficiency; check the international page for the accepted tests. Practise with our IELTS preparation guides and the Word Bank.
How to Apply to Caltech: Step by Step
- Register for the SAT or ACT and plan a retake window.
- Decide on aid first. Caltech requires aid requests at the time of application, so decide before you submit.
- Complete the Common Application and the Caltech supplement.
- Book the InitialView interview if you are an international applicant.
- Collect recommendations and the school report.
- Prepare scans with the PDF Toolkit.
Explore Related Guides & Rankings
Caltech Application Deadlines 2027
| What | Date |
|---|---|
| Restrictive Early Action application | 1 November 2026 |
| Early decisions released | Mid-December 2026 |
| Regular Decision application | Early January 2027 (5 January in the last published cycle; confirm the 2027 date) |
| Regular decisions released | Mid-March 2027 |
| Reply date | 1 May 2027 |
Caltech Tuition and Cost of Attendance
For 2026–27 Caltech’s on-campus estimate is US$98,622, excluding the optional US$5,388 student health plan.
| Item (2026–27) | US$ |
|---|---|
| Tuition | 68,574 |
| Fees | 2,655 |
| Housing | 12,711 |
| Food | 9,285 |
| Books | 1,428 |
| Personal | 3,969 |
| Total | 98,622 |
Four years at that rate is about US$394,500 before aid (our calculation). International and domestic students pay the same tuition.
Caltech Financial Aid and the Need-Aware Rule
- Need-aware for international applicants: Caltech says its international aid budget is limited, so need can be a factor in admission decisions for international citizens.
- Full need met if offered aid: Caltech meets 100% of demonstrated need for the students it offers aid to, with no loans in the standard package.
- Request aid at first application. If you do not request it then, you generally cannot add it later.
- If you are not offered aid, you must be able to pay the full cost before committing.
- No aid for international transfers.
Families earning under about US$100,000 are generally not expected to pay tuition or fees, according to Caltech-based figures, but confirm current thresholds on its financial aid site.
F-1 Visa and Life in Pasadena
International students enter the US on an F-1 visa using the I-20 that Caltech issues after you accept and show funding. Caltech is in Pasadena, California, and houses undergraduates on campus in its House system. After graduation, F-1 students may apply for Optional Practical Training, with an extension for STEM degrees, but visa and work rules change.
Mistakes That Cost Caltech Applicants
- Not requesting aid at first application and losing the chance later.
- Assuming need-blind treatment applies to international applicants.
- Choosing Restrictive Early Action without checking its limits.
- Treating a small class as an easier one.
- Skipping the international interview that Caltech recommends.
Frequently Asked Questions About Caltech Admission
They apply through the Common Application with Caltech’s supplement, SAT or ACT scores, recommendations and English proficiency evidence, in Restrictive Early Action or Regular Decision.
Restrictive Early Action closes on 1 November 2026, and Regular Decision closes in early January 2027 (5 January in the last published cycle).
Yes. Caltech requires SAT or ACT scores from first-year applicants.
No. Caltech is need-aware for international citizens because its international aid budget is limited, so need can affect admission decisions.
Caltech’s published on-campus estimate is US$98,622, made up of tuition of US$68,574, fees, housing, food, books and personal expenses.
For the Class of 2029, Caltech admitted 427 of 11,285 applicants, about 3.78%.
Caltech is 7th in the QS World University Rankings 2027.
No interview is compulsory, but Caltech recommends InitialView for all international applicants.
Caltech Admission for Pakistani Students
Pakistani applicants follow the same process as other international applicants. The most important decision is about financial aid, so read this table before applying.
| Area | What Pakistani applicants should do |
|---|---|
| School records | Send transcripts and recommendations through your school; submit originals with an official translation if needed |
| Tests | Plan the SAT or ACT early. Caltech also expects English proficiency evidence. See our IELTS preparation guides |
| Interview | Book the recommended InitialView interview in good time |
| Funding | Decide on aid before you submit. Caltech is need-aware for international applicants and rarely adds aid later. Convert family income from PKR to USD and keep a backup plan |
| Visa | Apply for the F-1 visa after admission. Visa decisions are made by US authorities, so check State Department rules and appointment wait times for Pakistan early |
| Start time | Begin 12 to 18 months before intake: test dates, attested documents, recommendations and visa slots all take time |
More PHL EDU University Admission Guides
Comparing universities? Every guide in this series follows the same plan: ranking, requirements, deadlines, costs, funding, visa and a Pakistan checklist. Browse them all, or open the full World’s Top 100 Universities directory for rankings and profiles.
Free tools that help with your application: AI Language Studio, PDF Toolkit, Word Bank, One Word, One Page, IELTS preparation guides, fully funded scholarships for 2027 and the PHL EDU blog.
Disclaimer: This article uses Caltech’s official admissions and financial aid pages, other public sources and the QS World University Rankings 2027, last checked in October 2026. Fees, deadlines, scholarships, test rules and visa rules change, and no admission, funding, visa or job outcome is guaranteed. Always confirm details with Caltech and the relevant government before applying.
