AACOMAS Application Timeline (2026-2027): Deadlines & Tips

Applying to osteopathic medical schools requires far more than filling out forms. The AACOMAS application timeline determines when admissions committees review your file, when interview spots fill, and ultimately when students start medical school.

Because most osteopathic medical schools use rolling admissions, applicants who apply early in the AACOMAS application cycle significantly increase their chances of acceptance.

This expert guide breaks down the AACOMAS application timeline (2026-2027), including key dates, strategy for the medical school application process, and tactical advice from admissions professionals.

Read: Top 10 Medical Schools in the U.S.

AACOMAS Application Timeline (2026-2027)

AACOMAS (American Association of Colleges of Osteopathic Medicine Application Service) is a centralized application platform used by students applying to colleges of osteopathic medicine in the United States. It simplifies the process of applying to multiple schools by allowing applicants to submit their materials (personal statements, transcripts, test scores, and more) through a single portal. Unlike the application process for MD schools, which uses the AMCAS system, AACOMAS is specifically designed for osteopathic medical schools.

Understanding exactly when the AACOMAS application cycle opens, when schools begin receiving applications, and when deadlines occur can dramatically improve your chances in the rolling admissions process.

Below are the confirmed and estimated key dates for the 2026-2027 AACOMAS application cycle.

The rolling admissions process means admissions committees review applications as they arrive rather than waiting for a single deadline. Many schools interview strong candidates within weeks of submission.

Expert Tip: Applying early is important because many schools use a rolling admissions process, reviewing applications as they’re received. The earlier you apply, the higher your chances of admission because the more spots there are available in the class.

DO Program Deadlines

Here are a couple of schools' deadlines to give you an idea of the timeline. However, to reiterate: with rolling admission deadlines, it is important that you apply as soon as you can. If possible, aim for the first two weeks in June to maximize your chances of getting in.

Early Decision (EDP Programs)

Some DO programs offer early decision, where applicants apply early and are informed about the outcome of their application early enough to apply to other schools through the regular process. EDP applicants only apply to one medical college through the process and, if offered an EDP acceptance, they must attend that college.

Here are the colleges that offer EDP programs:

• A.T. Still University Kirksville COM (ATSU-KCOM)
• Campbell University Jerry M. Wallace SOM (CUSOM)
• Marian University Tom and Julie Wood COM (MU-WCOM)
• Rocky Vista University College of Osteopathic Medicine (RVUCOM)
• Rocky Vista University - Montana College of Osteopathic Medicine (RVU-MCOM)
• Rowan-Virtua SOM (Rowan-Virtua SOM)
• Touro College of Osteopathic Medicine (TouroCOM-NY/MT)
• University of North Texas Health Science Center/Texas COM (UNTHSC/TCOM)
• Edward Via COM (VCOM)

On its site, AACOM provides the following guidance on EDP programs: The decision to apply through the EDP should be made carefully. While criteria vary among the colleges regarding their requirements, a frequent standard is that only those applicants who display exceptional credentials are admitted through the EDP process. Applicants considering an EDP application should contact the medical college admissions office for more specific information.

Ideal AACOMAS Application Timeline (Year-by-Year Strategy)

The application process begins long before AACOMAS opens. Below is a realistic preparation plan if you’re going to apply in 2027, which means you’re technically beginning soon.

Summer Before Applying (June-August)

During this early stage of the application process, focus on strengthening experiences and preparing for the AACOMAS application cycle.

Key priorities:

• Gain clinical hours through volunteering or paid employment
• Start clinical work, such as becoming a medical assistant, EMT, or scribe
• Build relationships with physicians practicing osteopathic medicine
• Continue community service and leadership activities
• Begin preparing to take the MCAT

Students who want to start medical school successfully should track all extracurricular activities during this period.

Fall Before Applying (September-December)

In the fall, the focus shifts toward preparation for the upcoming medical school application.

Key tasks include:

• Finalize your school list of colleges of osteopathic medicine
• Build relationships with science professors
• Connect with potential letter writers
• Consult your pre-health committee or pre-health office
• Research the mission of each osteopathic school

Students applying to both DO and MD schools should also consider the differences between MD programs and osteopathic medical training.

Winter Before Applying (January-March)

Winter is the time to complete the core academic elements of the AACOMAS application.

Key priorities:

• Take the MCAT
• Prepare for your preferred MCAT test date
• Begin drafting your personal statement
• Request official transcripts
• Confirm letter writers

Many applicants schedule test dates during this period, so MCAT scores are available before submission. Strong candidates aim to take the MCAT early enough that their MCAT scores are ready when the AACOMAS application opens.

Spring Before Applying (March-April)

As the AACOMAS application cycle approaches, applicants should finalize their materials.

Recommended tasks include:

• Edit your AACOMAS personal statement
• Finalize your school list
• Prepare secondary application essays
• Confirm letter writers
• Ensure all official transcripts directly arrive from registrars

You should also verify your academic history, including:

• community college courses
• transfer credits
• summer courses

Missing official transcripts is one of the most common delays in the verification process.

Early Summer (May-June)

Early summer is the most important period in the AACOMAS application timeline.

The AACOMAS application opens in May, but submission begins in early June.

Your priorities should be:

• Enter academic history
• Upload program materials
• Finalize your personal statement
• Request transcripts if not completed
• Send official test scores and MCAT scores

Strong candidates apply early and submit the primary application within the first two weeks.

Mid-Late Summer (June-August)

After submitting your AACOMAS application, the next stage of the application process begins.

During this stage:

• Schools send secondary application requests
• Applicants submit secondary applications
• Applicants complete secondary application essays

Many schools send the secondary application automatically once the primary application is verified. Applicants should aim to complete secondary essays within 7-10 days.

Fall Through Spring (Interviews and Decisions)

From late summer through spring, admissions committees evaluate applicants.

Key steps include:

• preparing for interviews
• continuing to monitor AACOMAS application status
• communicating with the medical college admissions office if needed

Many schools conduct interviews through March before selecting accepted students.

Application Requirements, Tips, and Deadlines: Step-by-Step

Understanding the entire medical school application process helps applicants avoid costly mistakes. Here’s a breakdown of the full AACOMAS application process.

Read: Medical School Requirements: What You Need to Get In

1. Take the MCAT

Deadline: Anytime from the summer before the year you apply to the following winter. Typically, the earlier you can get it done, the better.

At the very latest, aim to take the MCAT by April or May to ensure your MCAT score is available for early submission in June. If possible, schedule your test even earlier to allow time for a retake if needed.

MCAT test dates fill up quickly, especially during the spring and early summer, so register as early as you can. Registration typically opens several months in advance, so secure your preferred date and location as soon as possible. Many prospective applicants choose to take the test in their junior year so they don’t have to stress about getting the right score in the months leading up to the application.

Expert Tip: A good study plan can make or break your MCAT score. There are three core pillars to think about as you prep for the test:

• Focus on high-yield topics (e.g., biochemistry pathways, organic chemistry reactions, and critical analysis) to get the most out of your practice. Focusing on the areas that come up the most frequently has the highest chance of boosting your results.
• Begin taking full-length practice exams under timed conditions about 6-8 weeks before your test date. Prioritize AAMC official practice exams as they most closely mimic the actual test.
• Use those practice test results to identify weak areas and dedicate extra time to improve those sections. At this point, focus on what you most need to improve instead of studying more broadly. It’s a waste of time to study what you’ve already mastered.

Read: MCAT Score Range & Average of the T50 Medical Schools (2026) and explore: The Best 50+ Free Resources for the MCAT Exam

2. Research Schools and Build Your Application List

Deadline: Finalize school list and track AACOMAS requirements in the fall before the application year. That way, you can make sure you have all the prerequisites taken care of, and it gives you adequate time for research.

There are over 40 DO programs across the U.S., each with its own mission, curriculum structure, and selection priorities. One of the most common mistakes AACOMAS applicants make is applying to schools without a clear sense of fit. You want to go to a DO program that best fits your goals, values, lifestyle, and culture; schools want students who also fit what they’re looking for. You should also consider factors like geographic location, financial aid, prerequisites, and competitiveness levels to ensure you’re applying strategically.

Use the AACOMAS Program Directory as your base, but do your homework on top of that. Visit each school’s website. Read the mission statement. Look at where students do their rotations. Research the OMM curriculum emphasis. Many schools lean heavily into rural health, primary care, or community medicine; others offer more flexibility for specialties.

Expert Tip: If you can, talk to current students and alumni of these programs to learn about their experiences. What did they like and dislike about the school? Where did they get the most value? What would they have done differently?

Read: Research Hours for Medical School: How Many You Need & How to Get Them

3. Contact Your Letter Writers

Deadline: You should be building relationships with your recommenders throughout your time in school. Ideally, you should see if they’re willing to write your letters in November-January, then follow up as the deadlines get closer. You can ask later as well, but more time is typically better, so that they are aware and have adequate time to do a great job.

Again, it’s important to start early. Reach out to your letter writers in the fall before you apply, well before the application cycle opens. Common letter writers include science professors, physicians (preferably DOs), research mentors, and pre-health committee advisors.

Get letters that are specific to osteopathic medicine; admissions committees want proof that you understand and are committed to the field, that you know what you’re getting into, and that you will succeed. A letter from a DO who can speak to your curiosity, empathy, and alignment with osteopathic principles carries significant weight. If you’re struggling to get a DO letter, consider virtual shadowing platforms, osteopathic associations, or asking your pre-health office for alumni connections.

Expert Tip: Provide your letter writers with a recommender prep doc that includes the following. It will help them write the strongest possible letters that have great anecdotes and are personal to you and your journey into medicine.

• Resume
• Draft personal statement
• Summary of experiences with that recommender (e.g., "In your class, I led the community health case study and wrote my final paper on X...") and a couple of stories/examples
• Any other context on your application that may be helpful
• Clear instructions for AACOMAS or Interfolio
• Deadline (aim for June 1, remind them by May 1)

Read: Medical School Letter of Recommendation Guide (With Example)

4. Brainstorm & Draft Your Personal Statement

Deadline: Spend some time reflecting in the fall, but begin more seriously brainstorming in the early winter months. Try to get the first draft done by March at the latest, so you have time to get feedback, rewrite, and polish. Typically, the more iterations, the better. Your first draft is almost never the version that you’ll want to submit, and it takes more time than most applicants think.

One of the most important pieces of the application, the personal statement, is your chance to show who you are, not just what you’ve done. The best statements show 1) a deep understanding of osteopathic philosophy (e.g., mind-body-spirit, OMM, preventive care), 2) genuine motivation rooted in patient interaction or healthcare exposure, and 3) qualities like empathy, humility, adaptability, and a community-first mindset. Your personal statement should also be specific to you - if any other applicant could submit the same essay, it’s not personal enough. Spend the requisite time on reflection and dig deep.

Here are some questions to think through as you start brainstorming:

• What first drew you to DO vs. MD?
• How has shadowing or working with a DO shaped your understanding?
• When have you taken a holistic approach to solving a problem - either medically or otherwise?
• When have you helped someone by seeing the person, not just the symptoms?

Personal statements are super important. Here are a couple more tips to help you draft really powerful essays:

1. Show, don’t tell your understanding of osteopathic medicine. Don’t just say you believe in “holistic care” or that you’re “drawn to the DO philosophy.” Instead, show how those principles have shaped your path. Describe a moment shadowing a DO where the connection between lifestyle, mental health, and physical well-being became clear - and how that changed your outlook on medicine. Admissions readers want to see that you understand osteopathic medicine beyond surface-level language.
2. Anchor your narrative in a DO-specific experience. Whether it was through shadowing, mentorship, or patient interaction, your personal statement should feature a moment that’s uniquely osteopathic. Highlight how you saw hands-on care, OMM, or the emphasis on prevention and long-term patient relationships in action. That story will do far more to convince the committee than generic lines about passion or empathy.
3. Weave in the tenets of osteopathic medicine through your own story. If you learned about structural-function interdependence through your work with physical therapy patients, or if you witnessed self-healing capacity during a family member’s recovery, connect that organically. These principles should show up in your experiences, not your buzzwords.
4. Balance personal vulnerability with professional clarity. Your statement should reflect emotional intelligence, but not overshare. Use one or two personal stories to highlight resilience, curiosity, or values, and then connect those to your work in clinical, volunteer, or research settings. The best statements feel both authentic and grounded in evidence that you’re ready for med school.
5. Demonstrate evolution, not just a single spark. Strong applicants don’t rely on a childhood story or one pivotal moment. You can still have that initial impetus, but then show how your interest in medicine (and specifically osteopathic medicine) has deepened over time. The narrative arc should reflect growth: curiosity → exposure → reflection → commitment. That trajectory is far more compelling to admissions officers than a single childhood moment that changed everything.
6. Make your final paragraph future-facing and DO-specific. The conclusion should tie together your values, experiences, and vision for the kind of physician you want to become, and why the DO path is essential to that. Mention the type of impact you hope to have, and how the osteopathic lens will shape your care and career over time.
7. Edit ruthlessly, and get DO-specific feedback. Ask mentors, advisors, or admissions consultants who understand AACOMAS to review your draft. Remove vague language, overused phrases, and repetition. A great personal statement is concise, vivid, and impossible to copy-paste into an MD application without sounding off. Get an expert’s perspective on a third-person perspective who can help you understand how your essay may come off to an admissions committee.

Read: Crafting a Powerful AMCAS Most Meaningful Experience Essay and Medical School Personal Statement Guide (With Examples & Analysis)

5. Get Your Extracurricular Activities Together

Deadline: Throughout school, internships, shadowing, research, etc., you should be keeping records of what you’re doing and learning and how it’s changed you. Get a final list of everything you’ve done by April, so you have about a month to finalize what you want to prioritize and draft the descriptions.

If you’re applying this cycle, you’re at the point where you’re showing what you’ve already done in the most strategic, reflective, and DO-aligned way possible. Admissions committees want to see substance, growth, and a track record of patient-facing experience that proves you're ready for the demands of osteopathic training. Fewer experiences that are deeper and more tied to your goals and who you are are much stronger than a long list of things you did lightly or for no reason other than the application.

A couple of other things to note:

• Some level of clinical exposure is typically a non-negotiable, especially for highly-ranked programs, because it shows the AdComs that you understand what’s different about the osteopathic model and that you’re more likely to stick it out in school.
• Hands-on roles are powerful. Working as a medical scribe, EMT, CNA, or medical assistant is one of the best ways to prove your clinical readiness. Highlight moments where you collaborated with providers, witnessed patient outcomes, or saw holistic care in action. And again, you should use your AACOMAS entries to demonstrate how you grew, not just what you did.
• Service matters, but reflection matters even more. Hospitals, shelters, clinics, schools - wherever you’ve volunteered, admissions committees want to know: What did you learn? Who did you serve? How did this shape your character? Osteopathic medicine is rooted in community care and empathy. If you’ve worked with underserved populations, reflect that in your entries. Take time to think about the impact these experiences had on you and how you are a different person moving forward.
• Research can be a differentiator. While not required, medically relevant research (especially related to public health, anatomy, or neuroscience) can add depth. What questions were you exploring? What did you learn about the scientific process and about yourself?
• Organize, then optimize. Before you start inputting your AACOMAS experiences, do a full audit. Track every activity in a spreadsheet and include dates, hours, supervisors, and notes on impact or takeaways. You’ll want to categorize them clearly (e.g., “Patient Care,” “Leadership,” “Research,” “Community Service”) and write concise, thoughtful descriptions with results or reflections built in. This is where many applicants lose points for being generic or vague. Specificity wins. And it makes sure you don’t leave out any important experiences you may have forgotten about.

Read: The Best Medical School Extracurriculars for Admission

6. Create Your AACOMAS Account and Understand the Platform

Deadline: Open your account by early April 2026 so you can explore the platform, track requirements, and begin uploading materials before the May 5, 2026 AACOMAS application opening for the 2026-2027 application cycle.

The AACOMAS application portal can feel overwhelming if you wait until the last minute. Create your account even before you have all your materials ready so you can start getting comfortable with the layout, terminology, and submission tools. Use this time to input basic information and map out your task list.

Familiarize yourself with the four core sections:

• Personal Information - Demographics, contact info, and background.
• Academic History - Every college attended and all coursework. Precise course entry is essential for timely verification.
• Supporting Information - This includes your experiences, achievements, letters of recommendation, and your personal statement.
• Program Materials - Each DO program may ask for additional questions or uploads here.

7. Request Transcripts From Every College Attended

Deadline: Start requesting transcripts by mid-to-late April. The goal is to have them received by AACOMAS shortly after you submit in June.

This is one of the easiest parts of the application to mess up. Your transcripts must come directly from the registrar of each institution and must be linked to your application using the official AACOMAS Transcript Request Form.

Contact your registrars early (some schools have long processing times), resolve any holds (unpaid balances, missing paperwork) that could block transcript release, and track delivery via the AACOMAS portal. Transcripts can take several days to be marked as received and even longer to process.

Expert Tip: Do a full audit of your academic history before ordering. Are you including dual enrollment, summer classes, and community college transfer credits? Leaving out a transcript, even for a single class, can cause serious delays in verification.

8. Send Your MCAT Scores

Deadline: Send scores as soon as you have them, and ideally by early June.

MCAT scores must be sent from your AAMC account to AACOMAS, which can take several business days. Make sure your AAMC ID matches your AACOMAS ID exactly. Mismatches are a surprisingly common delay and can affect your verification timeline. If you're planning to retake the MCAT, you can indicate this in your application. Schools are typically willing to wait for the new score as long as they know it's coming, but you have to tell them.

9. Submit Your Primary Application

Deadline: Submit as early as possible after the portal opens - typically between June 1 and June 15.

DO schools use rolling admissions, which means seats are filled as strong applicants apply. The earlier you submit a complete, verified application, the more interview slots and scholarships are available. Again, aim for a submission in the first two weeks of June.

Before you hit submit, confirm that your MCAT scores and all transcripts have been received. Review every section, especially course entries and the activities section, for typos, errors, or formatting issues. Treat your primary submission like a final product. Once it’s in verification, you can’t change most of it. Ask a mentor, advisor, or admissions coach to do a line-by-line review for clarity, tone, and typos. This is a one-time opportunity to make a clean first impression.

Read: How Many Medical Schools Should You Apply To? Experts Weigh In

10. Prepare for and Submit Secondary Applications

Deadline: Ongoing from mid-June through late summer. Turn around most secondaries within 7-10 days of receiving them.

Most osteopathic schools will automatically send you a secondary once your primary is verified. Some are just fee payments, but many include school-specific essays that evaluate fit and commitment.

You should have done this in your school research, but continue to do deep dives into each school’s mission, curriculum structure (e.g., block vs. systems), and clinical training sites so you understand the programs and can reflect that in your answers. Timeliness does matter. Many schools interpret a slow response as a lack of interest. Submit your secondaries quickly, but not sloppily - this is where most applicants lose momentum.

11. Prepare for DO Interviews

Deadline: Begin serious prep as soon as your secondaries are submitted - interviews can begin as early as August and often run through March.

Know that once your application is verified and your secondaries are in, interview invites can come quickly, sometimes within a few weeks. Because osteopathic programs operate on rolling admissions, early interview performance can directly impact your chances of acceptance, financial aid, and scholarship opportunities.

Most DO interviews are either traditional one-on-one or panel-style, though some schools are beginning to experiment with MMI (Multiple Mini Interview) formats. Regardless of structure, the goal is the same: the AdCom wants to understand how you think, communicate, and reflect core osteopathic values.

Here are some key tips for DO interviews:

• Practice in realistic conditions, not just out loud. Mock interviews should mirror the exact format of your real interview, whether it’s virtual or in-person. If you’re doing a virtual interview, set up a quiet space, use a laptop or desktop (not a phone), and record yourself. Pay attention to lighting, background, eye contact, and vocal pacing. Most importantly, simulate follow-up questions. DO interviewers often ask, “Can you say more about that?” or “Why do you think that mattered?” Your answers need to hold up when pressed - this is how they test depth, not just polish. An expert admissions coach can also be very helpful here.
• Use the STAR method, but make your stories values-forward. Structure matters, but so does meaning. For every scenario you prepare (e.g., conflict with a teammate, adapting under pressure), don’t just explain what happened. Show how the story reflects DO-relevant values: compassion, humility, resilience, curiosity, or community commitment. Add a closing reflection: What did you learn, and how will it make you a better osteopathic physician?
• Do a forensic read of your AACOMAS application. Know your personal statement, experience entries, and secondaries inside and out. DO interviewers will often pick one line and ask you to expand. Practice answering: “What was the biggest lesson you took from this experience?” or “How would you approach that situation differently now?” Flag any vague or general phrasing in your application; that’s where your interviewer is likely to dig.
• Present yourself like someone ready for patient care. Whether virtual or in-person, your goal is to convey presence, not just preparedness. This means dressing professionally (business formal, conservative colors); making eye contact, smiling, and listening without interrupting; and saying “thank you” at the end and asking one thoughtful, school-specific question that demonstrates interest and insight. DO interviews weigh emotional intelligence heavily. Your ability to show empathy, listen actively, and express curiosity is as important as your accomplishments.

Expert Tip: The most competitive DO candidates create connections. Let your curiosity, warmth, and motivation come through. Show the admissions committee not just that you want to be a doctor - but that you’re the kind of doctor they’d want in their program, their profession, and their community.

Read:

• Med School Interview Prep: How to Practice, Prepare, & Stand Out
• Good Questions to Ask Medical School Interviewers (With Examples)
• Hardest Medical School Interview Questions Explained (With Sample Responses)

Final Tips for the AACOMAS Application Timeline

The AACOMAS application timeline rewards preparation and strategy.

Key takeaways:

• Understand the medical school application timeline
• Prepare early for the AACOMAS application cycle
• Take the MCAT early and secure strong MCAT scores
• build a thoughtful school list
• Complete a compelling personal statement
• Submit your primary application early in the rolling admissions process

Students who plan strategically often receive interviews earlier and maximize their chances of acceptance at osteopathic medical schools.

Read: Is Med School Worth It? Weighing the Pros and Cons

Need Help With Your AACOMAS Application?

Applying to medical school can be challenging, but you don’t have to do it alone. Medical school coaches can help you every step of the way, from perfecting your personal statement to preparing for interviews. With personalized advice and insider tips, they'll help you put together the strongest version of your application. You can also explore medical school bootcamps and free events for more helpful insights!

See: The 10 Highest-Rated Med School Coaches

Looking to learn more about the medical school application process? Check out these helpful resources:

• The 25 Best Osteopathic Medical Schools
• MD Application Deadlines of the Top 50 Medical Schools
• Top 15 Medical School Acceptance Rates & Class Profiles
• The Different Types of Medical Careers – and Which One is Right for You
• How Long is Medical School – A Year-by-Year Breakdown
• What GPA Do You Need to Get Into Medical School?
• Medical School Letter of Intent: What It Is & How to Write One (With Examples)
• How to Craft the Perfect Medical School Interview "Thank You" Letter

FAQs - AACOMAS

If I apply to osteopathic medical schools through AACOMAS, can I still apply to MD schools in the same cycle?

• Yes. The AACOMAS application service is separate from AMCAS, which is used for MD schools. Many students apply to both osteopathic medical schools and MD schools in the same application cycle. However, each system has its own application portal, fees, personal statement requirements, and timelines, so you’ll need to manage two parallel application processes.

Do osteopathic medical schools prefer applicants who shadow a DO physician?

• Many colleges of osteopathic medicine strongly prefer applicants who have shadowed a DO physician because it demonstrates that you understand the philosophy of osteopathic medicine. While not every school requires it, direct exposure to osteopathic practice can strengthen your application and may help you secure a more compelling letter of recommendation.

What happens if my AACOMAS application has a mistake after I submit it?

• Once your AACOMAS application is submitted and enters verification, most sections cannot be edited. However, some updates, such as new test scores, updated experiences, or additional schools, can be added later. If you discover a significant error, the best step is usually to notify the medical college admissions office at the schools you applied to and provide the corrected information.

Can I add more schools after submitting my AACOMAS application?

• Yes. Even after submitting your primary application, you can add additional osteopathic medical schools through the AACOMAS portal. When you add a new program, that school will receive your verified application and may send you a secondary application, just like the other schools on your list.

Do osteopathic medical schools care more about GPA or MCAT scores?

• Both matter, but admissions committees evaluate applicants holistically. While strong MCAT scores and GPA are important, many osteopathic medical schools also place significant weight on clinical exposure, community involvement, leadership, and evidence that you understand the principles of osteopathic medicine. A balanced application with strong experiences can sometimes offset slightly lower academic metrics.