Does Duke Require the CSS Profile?
Duke requires the CSS Profile for institutional need-based aid and uses CSS code 5156. Additional tax documents are not automatic for everyone; Duke requests them through the applicant checklist when needed.
CSS Profile
RequiredAll undergraduate aid applicants seeking Duke institutional need-based funding complete the CSS Profile. U.S. citizens and permanent residents also submit the FAFSA; international students skip the FAFSA but must request aid when applying.
CSS school code
5156Duke's CSS Profile code is 5156. Use that code to send the form to Duke University.
Published financial aid deadlines
These are the school's currently published 2026–27 dates. A late or updated application cycle can use different dates, so confirm the deadline shown in your applicant portal.
Which parent files?
When biological or adoptive parents live apart, Duke requires each parent to complete a separate CSS Profile. Duke calculates the parents' contributions separately and offers a waiver review in rare circumstances.
Documents and next steps
Use Duke CSS institutional code 5156. After filing, watch the applicant portal and email: Duke asks only some applicants for tax, wage, or business documents, which those families then submit through College Board IDOC.
Official sources for this answer
- Duke Undergraduate Admissions financial support (checked August 2, 2026)
- Duke institutional aid document guidance (checked August 2, 2026)
Common questions
Does Duke require the CSS Profile?
Yes. Duke requires the CSS Profile for institutional need-based aid and uses CSS code 5156. Additional tax documents are not automatic for everyone; Duke requests them through the applicant checklist when needed.
What is Duke's CSS Profile code?
Duke's CSS Profile code is 5156. Use that code to send the form to Duke University.
When is Duke's financial aid deadline?
Early Decision: November 3; Regular Decision: February 1.
Is the FAFSA enough for Duke?
Not for Duke's institutional aid. Eligible students should file the FAFSA for federal aid, but Duke uses the CSS Profile separately to evaluate its own need-based funding.
Estimate the rest of your aid
The CSS Profile does not tell you what federal aid you may receive. Estimate that separately, then compare the result with each college's net price and your outside scholarship options.