A first Turnitin report usually appears within about 15 minutes, though large files or peak times slow it down. You can resubmit if your tutor allows it, but after the first three submissions each new report takes at least 24 hours, and every resubmission replaces the one before it.
Timing feels unimportant right up until the evening a deadline is due, when a report that will not load, or a 24 hour wait you did not know about, turns into real panic. This guide walks through how long each stage takes and how the resubmission rule works, so you can plan around it instead of discovering it at the worst moment.
How long does the first report take?
For your first submission to an assignment, the Turnitin similarity report is normally ready within a few minutes, often inside 15. Two things slow it down. Large documents take longer to process, and so do peak periods, when thousands of students across different institutions submit at once in the hours before a common deadline. During those windows even the first few reports can take half an hour or more rather than the usual few minutes.
There is a practical lesson in that. The time you most want a fast report, the final hours before submission, is the exact time the queue is longest. Submitting earlier is not just good for your nerves, it genuinely gets you a faster report.
What do the pending statuses mean?
While a report is generating you will usually see a pending state, often shown as a greyed-out icon or a dash where the percentage will appear. That is normal for the first hour. What is not normal is a report that stays pending well beyond that. As a rough guide:
- Still pending after about an hour on a first submission usually points to an upload problem, such as an unsupported file or a corrupted document. It is worth checking with your tutor or support team.
- Still pending after 24 hours on a resubmission is the expected behaviour, not a fault, because of the rule below.
How does the resubmission and 24-hour rule work?
First, resubmitting is only possible if your tutor sets the assignment to allow multiple submissions. Many do not. When it is allowed, three things are true and all three matter:
- Each resubmission overwrites the last. You do not collect a row of scores. The new file and its report replace the previous one entirely, so there is only ever one live version.
- Your submission time is overwritten too. If you resubmit after the deadline, the paper is recorded as late, even if your first version was on time.
- The fourth report onwards takes at least 24 hours. The first three submissions generate at normal speed. From the fourth, Turnitin deliberately delays each new report by at least a day.
That delay is not a glitch. It exists to stop students fine-tuning a paper against the score in real time, resubmitting again and again until the number looks acceptable. Whatever you think of that, it is the single most important timing fact to build your plan around.
Why does this catch students out?
Here is the trap we see most often. A student leaves the first check to the last evening. The report comes back higher than expected. They fix a few things and resubmit, then fix a bit more and resubmit again, burning through their first three quick reports. Now they make one more change, resubmit a fourth time, and the report will not be ready for a full day, which is after the deadline. The file sitting there at the cutoff, score and all, is the one that gets marked.
Reversed, the same student checking two or three days early has all the time they need. One careful report, time to rewrite the passages behind the biggest matches honestly, and a calm final submission. One good early check beats three rushed resubmissions every time.
How can you check a draft without using up submissions?
Not every assignment lets you self-check, and many students never get to see their own report before the real submission. That is the gap an independent pre-submission check fills. You run your near-final draft, read the matches and the AI indicator, and fix what needs fixing, all without touching your institution’s submission count or deadline. Done a few days out, it takes the whole resubmission scramble off the table.
One safety point to look for: make sure any check you run does not store your draft in Turnitin’s repository. If it does, your own earlier draft can come back as a near-100% match against you when you submit, which is exactly the problem we explain in checking my paper and saving it to the Turnitin database. A no-repository check avoids that completely.
What if the deadline passes while a report is pending?
A report still generating when the deadline hits does not undo your submission. Your file is submitted the moment you upload it, and the report catches up afterwards, so a pending report at the cutoff is not the same as a late submission. What does make you late is resubmitting after the deadline, because that overwrites your on-time submission time. The score is also tied to whichever file is in at the cutoff, and it will not change once the deadline passes. So if you have a version in on time, think hard before replacing it in the final minutes for a marginally lower score.
One more thing worth knowing: the timing above is Turnitin’s own. If you submit through Canvas, Moodle, Blackboard or another system, the handoff can add small delays, but the resubmission limit and the 24 hour rule still come from Turnitin underneath. Whatever the platform, submitting your best version comfortably early means a slow queue or a surprise delay cannot cost you the submission itself.
Frequently Ask Questions
How long does Turnitin take to generate a report?
Usually about 15 minutes for a first submission. Large files and busy periods near deadlines can stretch that to half an hour or more.
How many times can you submit to Turnitin?
If your tutor allows resubmissions there is no fixed cap, but from the fourth submission onwards each new report takes at least 24 hours to appear.
Why is my Turnitin report taking 24 hours?
You are past your third submission to that assignment. From the fourth resubmission on, Turnitin delays each report by at least 24 hours by design.
Does resubmitting replace my first score?
Yes. Each resubmission overwrites the previous file, its report and its submission time, so only the latest version exists.
Why has my report been pending for over an hour?
On a first submission that usually signals an upload problem, such as an unsupported or corrupted file. On a resubmission past the third, a wait of up to 24 hours is expected.
