Academic Calendar

CU Boulder Academic Calendar 2026‑2027: Important Dates

By eriq elikplim
CU Boulder Academic Calendar, Important Dates.

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The CU Boulder Academic Calendar 2026‑2027 is your all‑in‑one roadmap for every critical milestone, from CU Boulder enrollment and registration windows, tuition payment due dates, and course add/drop periods to campus holidays and final exam schedules.

By checking the University of Colorado Boulder academic calendar, Buffs can lock in CU Boulder term dates, navigate the CU Boulder exam schedule, track CU Boulder registration deadlines, and never miss the last day to withdraw without a “W”, ensuring seamless academic and financial planning at CU Boulder.

CU Boulder operates on a traditional semester system enhanced by flexible summer and winter offerings, so whether you’re wondering how long a semester is at CU Boulder, planning around the CU Boulder winter term, or deciding which CU Boulder summer session fits your goals, the calendar has all the dates you need:

  • Fall Semester: A 15‑week term (14 instructional weeks + one finals week), kicking off in late August and concluding before the Thanksgiving and winter recesses.
  • Spring Semester: Mirrors Fall with 15 weeks of instruction plus finals, beginning after Martin Luther King Jr. Day and wrapping up in early May—with a mid‑semester Spring Break.
  • Winter Term: A short, intensive 3‑week session in January for accelerated or makeup coursework, with its own add/drop and exam deadlines.
  • Summer Sessions: Three flexible formats…Session A (6 weeks), Session B (6 weeks), and the Full Summer Session (12 weeks)—each with distinct registration, add/drop, and billing deadlines for catching up, getting ahead, or lightening your semester load.

Keep the CU Boulder Academic Calendar 2026‑2027 front and center so you can focus on thriving both in the classroom at Norlin Quad and beyond on the Boulder Flatirons.

CU Boulder Academic Calendar Fall 2026

  1. Fall 2026 main campus registration begins for incoming fall transfer students by assignment on Wednesday, June 17, 2026.
  2. The last day to submit a petition for Colorado residency for Fall 2026 is Friday, July 10, 2026.
  3. Fall 2026 main campus schedule adjustment begins for continuing and readmitted undergraduate, partnership program, and new transfer students on Tuesday, July 21, 2026.
  4. The last day to sign up for the 5-payment plan for Fall 2026 is Tuesday, August 4, 2026, at 11:59 p.m. MT.
  5. The deadline to set up direct deposit for refunds for Fall 2026 is Sunday, August 9, 2026.
  6. The Fall 2026 IUT application is due on Monday, August 10, 2026, at 11:59 p.m.
  7. The last day to complete immunization requirements for Fall 2026 is Monday, August 10, 2026, at 5:00 p.m.
  8. Fall 2026 main campus open enrollment begins for all students on Thursday, August 13, 2026.
  9. Fall 2026 main campus registration begins for nondegree employees on Thursday, August 13, 2026.
  10. Fall 2026 tuition and fee bills become available online on Thursday, August 13, 2026.
  11. The domicile qualifying date for Fall 2027 residency petitions is Tuesday, August 18, 2026.
  12. The last day to add or swap a class for Fall 2026 is Friday, August 28, 2026, at 11:59 p.m.
  13. The last day to be automatically enrolled from a waitlist for Fall 2026 is Friday, August 28, 2026, at 11:59 p.m.
  14. The last day to waitlist for a closed class for Fall 2026 is Friday, August 28, 2026, at 11:59 p.m.
  15. CU Boulder Housing move-in for Fall 2026 takes place from Friday, August 14, 2026, to Tuesday, August 18, 2026.
  16. Fall Welcome for Fall 2026 occurs from Sunday, August 16, 2026, to Saturday, September 5, 2026.
  17. The first day of classes for Fall 2026 is Thursday, August 20, 2026.
  18. The last day to select or waive student health insurance for Fall 2026 is Tuesday, September 1, 2026, at 11:59 p.m.
  19. The Fall 2026 IUT drop deadline is Friday, September 4, 2026, at noon.
  20. The last day to change variable and no-credit status for Fall 2026 is Friday, September 4, 2026, at 11:59 p.m.
  21. The last day to drop a class without a W notation for Fall 2026 is Friday, September 4, 2026, at 11:59 p.m.
  22. The last day to sign up for the 4-payment plan for Fall 2026 is Friday, September 4, 2026, at 11:59 p.m. MT.
  23. The last day to withdraw from the semester with a 100% refund for Fall 2026 is Friday, September 4, 2026.
  24. Payment for Fall 2026 tuition and fees is due on Saturday, September 5, 2026, at 11:59 p.m. MT.
  25. Fall 2026 courses post to transcripts on Tuesday, September 8, 2026, at 5:00 p.m.
  26. Fall 2026 waitlists are canceled on Tuesday, September 8, 2026, at 11:59 p.m.
  27. The first day to sign up for the 3-payment plan for Fall 2026 tuition and fees is Wednesday, September 9, 2026.
  28. Fall 2026 tuition and fee bills for new and/or unpaid charges become available online on Thursday, September 10, 2026.
  29. Labor Day, when the campus is closed, falls on Monday, September 7, 2026.
  30. The midsemester reading day for Fall 2026 is Thursday, October 8, 2026.
  31. Fall Break for Fall 2026 takes place from Monday, November 23, 2026, to Wednesday, November 25, 2026.
  32. Thanksgiving, when the campus is closed, occurs from Thursday, November 26, 2026, to Friday, November 27, 2026.
  33. The last day of classes for Fall 2026 is Friday, December 4, 2026, with the campus following the Monday class schedule.
  34. End of term reading days for Fall 2026 are held from Saturday, December 5, 2026, to Sunday, December 6, 2026.
  35. Final exams for Fall 2026 take place from Monday, December 7, 2026, to Friday, December 11, 2026.
  36. The degree conferral date for Fall 2026, with no campuswide ceremony, is Friday, December 11, 2026.

CU Boulder Academic Calendar Spring 2027

  1. Housing move-in is to be announced (TBA).
  2. The first day of classes is Thursday, January 7, 2027.
  3. Martin Luther King Jr. Holiday, when the campus is closed, is Monday, January 18, 2027.
  4. Tuition is due on Friday, February 5, 2027.
  5. Midsemester Reading Day is Thursday, February 25, 2027.
  6. CU Boulder Spring Break 2027 runs from Monday, March 15, 2027, through Friday, March 19, 2027, during which the campus is closed.
  7. The last day of classes is Friday, April 23, 2027 (with the campus following a Monday class schedule).
  8. End-of-term Reading Days are Saturday, April 24, 2027, through Sunday, April 25, 2027.
  9. Final exams take place from Monday, April 26, 2027, through Friday, April 30, 2027.
  10. University Commencement Ceremony is held on Saturday, May 1, 2027.
  11. Degree conferral date is Saturday, May 1, 2027.

CU Boulder Academic Calendar Summer 2026

  1. Summer Housing Move-In dates are to be announced (TBA).
  2. The First Day of Classes for Maymester begins Monday, May 4, 2026.
  3. Memorial Day closes the campus on Monday, May 25, 2026.
  4. The First Day of Classes for Sessions A, C, and D begins Tuesday, May 26, 2026.
  5. The Last Day of Maymester Classes is Thursday, May 21, 2026.
  6. Maymester Final Examinations are held on Thursday, May 21, 2026.
  7. Juneteenth closes campus on Friday, June 19, 2026.
  8. The First Day of Classes for Session B begins Tuesday, June 30, 2026.
  9. The Last Day of Session A Classes is Friday, June 26, 2026.
  10. Session A Final Examinations are held on Friday, June 26, 2026.
  11. Independence Day Observed closes campus Friday, July 3, 2026.
  12. The Last Day of Session C Classes is Friday, July 17, 2026.
  13. Session C Final Examinations are held on Friday, July 17, 2026.
  14. The First Day of Classes for Augmester begins Monday, July 27, 2026.
  15. The Last Day of Sessions for B and D Classes is Friday, July 31, 2026.
  16. Sessions B and D Final Examinations are held on Friday, July 31, 2026.
  17. The Last Day of Augmester Classes is Thursday, August 13, 2026.
  18. Augmester Final Examinations are held on Thursday, August 13, 2026.
  19. Summer Degrees are conferred on Thursday, August 13, 2026 (no ceremony).
  20. Summer Tuition Due Dates vary based on registration timing; students should check their billing statements.

For more on the CU Boulder Academic Calendar 2026-2027, visit the University of Colorado Boulder Calendar website.

eriq elikplim
eriq elikplimhttps://acadcalendar.com
Eric Elikplim is the lead editor of AcadCalendar.com. Eriq draws on 10 years of experience in edtech and project management. He has collaborated directly with multiple universities, establishing processes to cross-check term dates, registration deadlines, and exam schedules. Beyond calendar data, Eriq contributes thought leadership on academic productivity: he has authored articles on semester planning, and consulted with student organizations to refine reminder features and user experience.

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