October or January: which TMUA sitting to take
The TMUA runs twice, in October and January. Most students sit in October, and the data says they're right to.
Why October is the main event
Three reasons.
Some universities only take October. Cambridge doesn't accept the January sitting at all, so for some courses the choice is already made.
October results land in time. Your score comes back before most admissions decisions, so it can actually help this cycle. January results arrive later and mostly work as a second chance.
The scale favours October. Scoring is anchored on the October sitting, and nationally the January cohort scores well below it, by more than half a standard deviation lately. Partly that's who sits in January (more retakers and deferrals), but since January is still graded on October's scale, that weaker field shows up in the scores. January isn't the soft option it looks like.
When January makes sense
It's the right call if you were ill or underprepared in October, if you need a retake, or if October genuinely wasn't possible. Just go in knowing it tends to be the harder sitting to score well in, and that it won't work for every course.
Plan back from October
Most students should aim at October. Booking opens in summer and closes in September, so treat October as your deadline and build back from it. For context, a lot of universities cluster offers around a score of 5.0 and up, though a score is only ever part of the decision. Pick your sitting early, book early, and give yourself a proper run-up. Not started yet? Begin with the practice tools on tmua.fyi.
Frequently asked questions
Can I sit the TMUA in both October and January?
You may sit once per cycle, so it is one or the other in a given year. Choose the sitting that fits your universities and your preparation.
Is January easier because fewer people sit it?
No, if anything the opposite. January is scored on October's scale and draws a lower-scoring field, so it tends to be a harder context in which to achieve a high score.