What happens if you submit an assignment late?
Late penalties, locked portals, and grace periods — and what to do right now if you're about to miss a deadline.
Last updated June 1, 2026
It depends almost entirely on how your professor set up the assignment and their late policy. Here's the realistic range of what happens, and what to do if the clock is running out on you tonight.
The usual outcomes, worst to best
Late work generally lands in one of these buckets:
- Zero — the portal locked at the deadline and won't accept the file at all
- Flat penalty — e.g. one letter grade off for being late
- Per-day penalty — e.g. 10% off for each day past due
- Grace period — many professors quietly allow a few hours or a day
- Accepted, no penalty — if you emailed ahead with a reason
What to do if you're about to be late
Email the professor before the deadline, not after. A short, honest note asking for a short extension is far more likely to work than silence followed by a late upload. Submit whatever you have, even if it's rough — a partial submission usually beats a zero.
How to stop this from happening
Most late submissions aren't about the work — they're about forgetting the exact moment it's due. Minutely schedules the submission server-side and fires it at the deadline whether your laptop is on or off, so 'I forgot to hit submit' stops being a way to lose points.
Minutely fires your submission at the exact deadline, server-side — so a forgotten upload or a closed laptop never turns into a late penalty again.
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Frequently asked questions
Can I still submit an assignment after the due date?+
Sometimes. If the professor left the portal open or set a late window, yes — usually with a penalty. If they locked it at the deadline, the system won't accept it and you'll need to email them directly.
How much do late penalties usually take off?+
Commonly one letter grade for being late, or around 10% per day. It varies by professor — check the syllabus late policy.
Is it better to submit late or not at all?+
Almost always better to submit late. A penalized grade beats a zero, and it shows the professor you did the work.