If you sat the August SAT, you are being asked to decide about September before you know how August went. Registration for the September 12 test closes August 28, late registration closes September 1, and your August score is not released until September 4.

That is an awkward order, and it is worth knowing it does not hold all autumn. It bites when the next registration deadline falls inside the roughly two-week wait for your score, which is the case going into September and again going into October. After that it reverses: October 3 scores arrive October 16, a week before November 7 registration closes, so that one you get to decide with the number in hand.

There are two ways out of it, and the better one is usually not the one people reach for.

You can register now and still change your mind

Registering is not the same as committing to sit. You can cancel a registration as late as the Thursday before test day. College Board refunds the registration fee and charges a late-cancellation fee, which fee-waiver students do not pay.

For the September 12 test, that Thursday is September 10. Your August score arrives September 4. So you would have six days with the number in front of you before you have to decide anything.

That is the hedge. Register by August 28 at the normal price, see your August score on September 4, and cancel if it turns out you do not need another sitting. What it costs you if you cancel is the late-cancellation fee, not the whole registration, so the downside is a fee rather than a wasted Saturday.

Or skip September and let October be the decision

The other route is quieter and often better. October 3 registration closes September 18, which is two weeks after your August score arrives.

That means October is the sitting you can choose with full information. You see your August result, decide whether another test is worth it, and register knowing the answer. No hedge, no cancellation fee, no Saturday booked against a number you have not seen.

The cost is three more weeks of waiting, and October 3 is the last fall weekend date whose scores are scheduled to arrive before a November 1 deadline. What the fall calendar leaves you works through which colleges that actually matters for.

When September is worth registering for anyway

Register for September without hedging if you already know the answer. You know it if your August sitting went badly enough that you were retaking regardless, or if you did not sit August at all and need a score on file. You also know it if a scholarship or an early deadline needs a score sooner than October 16, which is when October scores are scheduled.

The thing that makes this easy is having a reason that does not depend on the August number. If you have one, the score release date is irrelevant to you and you should just register.

When to leave it

If nothing about your preparation has changed since August, another sitting three weeks later is a Saturday and a fee for a score that tends to land near the last one. A retake moves when something specific about how you test has changed, not when the calendar offers another date.

The same goes if the honest answer is that you do not know yet. Not knowing is a good reason to take October, which is the date that lets you not know for another two weeks.

Checking these dates against College Board yourself

The registration deadlines and score release dates are from College Board's published 2026-27 dates and deadlines and its score release schedule, checked August 24, 2026. The cancellation window and the late-cancellation fee are from its registration terms. Deadlines move occasionally and College Board's page is the authority rather than this one, so open it before you rely on a date here.

If cost is the deciding factor, what SAT and ACT fee waivers cover sets out what a waiver includes, including the cancellation fee it removes. And if you do register, the free score sends close before you see your score covers the other deadline in this window that catches people.