You can change your ACT test date or test center through MyACT before the late registration deadline closes, but ACT charges a change fee each time—and fee waivers do not cover it. Plans shift, and ACT builds in flexibility, but the cheapest move is still to register carefully the first time. Start with how to register for the ACT if you have not signed up yet.
What you can change
Through MyACT, you can typically switch your test date, move to a different test center, or adjust your test option (like adding or dropping the Writing section or changing formats). Each change triggers the change fee, so batch your decisions when you can instead of making several small updates.
When the change deadline closes
You must request changes before the late registration deadline for your target date—not after. Once that window closes, you cannot swap dates or centers through the normal process. Check the deadline for your date on the ACT test dates calendar and on act.org.
What the change fee costs
ACT charges a flat change fee per modification, on top of any difference in registration cost between dates or options. The exact amount changes from year to year. For current numbers alongside late and standby fees, see how much the ACT costs.
Fee waivers do not cover changes
A fee waiver covers your registration fee, including optional Science and Writing add-ons, but it does not pay for change fees. If you used a waiver and need to move your date, budget for the change charge out of pocket—or pick your date carefully upfront using when to take the ACT so you are less likely to need a swap.
The bottom line
Changing your registration is straightforward through MyACT, but it costs money and must happen before the late deadline. Register with a date and center you are confident about, and treat changes as a backup plan rather than the default.
Start practicing
Start with a free diagnostic, then drill your weak spots with 15-question quizzes and track how you're doing across Reading, English, and Math. Compare plans whenever you're ready to go further.
This article offers general ACT prep guidance. The ACT can change from year to year, including its format, scoring, policies, test dates, and fees, so always confirm the latest details on the official ACT website at act.org before you make decisions. ACT® is a registered trademark of ACT, Inc. thirty-six is not affiliated with, endorsed by, or sponsored by ACT.