Letters of Intent vs. Letters of Interest: What Each One Promises
I've talked to hundreds of successful applicants, and one of the most common questions I get every cycle, usually starting right around now and running through the spring, is some version of "should I send a letter of intent?" Most people asking that question don't realize they're conflating two different tools that serve two very different purposes. Getting this wrong doesn't just waste an email. It can put you in a genuinely awkward position with a school, or worse, box you into a commitment you didn't mean to make.
So let's get the definitions straight first, because the confusion between these two letters is where almost every mistake starts.
Three Letters, Three Very Different Promises
A letter of interest expresses genuine enthusiasm for a school with no commitment attached. You're telling them this program is high on your list and giving them a reason to keep you near the top of their pile, but you're not promising anything. You can send a letter of interest to as many schools as you're seriously considering, and there's nothing unethical about doing that, provided each one is genuine and specific to that program.
A letter of intent is a different animal entirely. It's a statement that you will attend this school if admitted, full stop, and it's treated as an ethical commitment even though there's no legal contract behind it. Adcoms talk to each other. A student who sends letters of intent to three different schools and then picks one anyway is the kind of story that gets remembered, and not in a way that helps future applicants from your school or your advisor's reputation. Because of this, the rule that pre-health advisors repeat every year is simple: send a letter of intent to exactly one school, and only when you mean it.
An update letter is the third category people forget about, and it's honestly the one you'll use most often. It carries no commitment language at all. It just reports something real that's changed since you applied or interviewed: a new clinical role, a completed set of hours, a grade posted, an abstract accepted. Most applicants will send two or three of these across a cycle, and they're low risk because there's no promise embedded in them, just new information.
Once you separate these three in your head, the timing questions get a lot easier to answer.
Timing: When Each One Belongs in Your Cycle
Update letters can go out whenever you have something genuinely worth reporting, and a loose but useful rhythm many advisors recommend is roughly one in the fall, one around the turn of the year, and one in early spring if you're still waiting to hear back from schools. Three over a full cycle is a reasonable ceiling. Sending an update every few weeks just to stay visible reads as exactly what it is, and it tends to annoy an admissions office rather than help you.
Letters of interest belong after your interview in most cases. Sending one before you've interviewed, especially right after submitting a secondary, tends to look like you're trying to jump the line before the school has had a real chance to evaluate you. The exception is a school you haven't heard from in six to eight weeks after submitting a complete secondary, where a brief, genuine note of continued interest can be reasonable. After an interview, though, a letter of interest to any school still seriously in the running is fair game, and you can send more than one.
A letter of intent is the one that requires patience. The general guidance is to hold off until late spring, often April or May, once you've been through most or all of your interviews and have a real, informed sense of where your top choice sits. Committing to a school in December because it's the first one that made you feel wanted, only to realize in April that a different program was your real best fit, is the exact scenario this rule exists to prevent. If you're on a waitlist at a school you'd genuinely attend over anywhere else you've been accepted, that's typically the moment a letter of intent does the most good.
One more wrinkle worth knowing if you're applying through TMDSAS to Texas schools: because that system uses a ranked-match algorithm rather than individual rolling decisions, a written letter of intent sent in November or December carries very little practical weight, since your intent is already communicated through how you rank your schools. Post-match communication with Texas programs follows the same etiquette as everywhere else.
What Belongs Inside the Letter
All three letters share a similar skeleton, and the differences come down to a few key sentences rather than a completely different structure. Open with a clear statement of purpose, whether that's continued interest, an update, or, for a letter of intent, an explicit statement that you will attend if accepted, including your application ID and interview date so the office can find your file quickly.
From there, give three to five reasons that are specific to that program: something about the curriculum structure, a clinical site, a faculty member whose work connects to your interests, or the school's mission, not the weather or the city's reputation. Generic praise that could apply to any school on your list is the fastest way to make the letter feel like a form template, and admissions staff read enough of these to notice immediately.
Then include real updates with real numbers. "I've continued clinical work" says nothing. "I've completed 240 additional clinical hours since my November interview and had an abstract accepted for presentation in March" says everything a busy reader needs to know in one sentence. Close professionally, keep the whole thing to one page, single spaced, in a standard eleven or twelve point font, and resist the urge to pad it out. A tight, specific half page does more work than a long letter full of restated application content.
Check the School's Policy Before You Send Anything
This is the step people skip most often, and it's the one that can undo an otherwise well-written letter. Roughly a quarter of medical schools explicitly do not accept post-submission letters of any kind, and sending one anyway signals that you didn't do the basic homework of reading their admissions page. Some schools that do accept updates require them through a specific secondary application portal rather than email, so an email sent to the general admissions inbox may never reach the file at all. Other schools are open to either method. Before you write a single word, check the specific school's website or reach out to their admissions office directly to confirm both whether they accept these letters and how they want to receive them.
A Few Mistakes Worth Avoiding
Don't send a letter of intent before you've interviewed everywhere it matters to you. Once it's sent, walking it back is a much worse position to be in than simply waiting another few weeks. Don't send more than one letter of intent in a cycle, even if two schools both start to feel like your top choice at different points. And don't let an AI tool write the letter for you word for word. Admissions staff read hundreds of these every cycle, and generic, overly polished language stands out for the wrong reasons. Write in your own voice, be specific, and say only what's true about where things stand for you right now.
Every applicant's situation is a little different, and figuring out exactly when to send which letter, and to which school, depends on details specific to your list and your timeline. If you want help thinking through your own strategy for this, click below and we'll walk through it together.
You can also reach us directly at success@admitmd.com, or call or text 512-693-9228.
Comments