It depends on a setting you never see. When an instructor creates a Turnitin assignment, they choose one of three "Submit papers to" options: your paper goes into Turnitin's global repository, into your institution's private repository, or into neither. All three still produce a Similarity Report. Only the storage outcome changes, and nothing in the student-facing submission screen tells you which one was picked.
That single distinction is the whole answer, and it's also the thing every top-ranking page on this question gets past without naming. We read Turnitin's own guides live rather than trusting a summary, and checked what the top of Google actually says in response to the same question. The two didn't match.
Does Turnitin keep a record of checked papers?
Sometimes, and it's decided per assignment, not per student or per institution. Turnitin's own "Optional Standard (Classic) assignment settings" guide, read live on 23 September 2026, lists the submission setting as "Submit papers to" with three choices: Standard paper repository, Institution paper repository, or Do not store the submitted papers. The first two store your paper; the third generates a Similarity Report and stores nothing.
The instructor sets this when creating the assignment. It can differ from one assignment to the next inside the same class, and the student submission flow gives no indication of which option is active. If you want to know for a specific assignment, the only reliable route is to ask the instructor directly, because nothing in the interface discloses it to you.
This is a different question from whether Turnitin can see what you changed while writing. For that, see our separate piece on whether Turnitin can see your edit history, which is about draft tracking inside one document rather than storage across submissions.
What's the difference between 'Submit papers to' and 'Compare against'?
They sound like the same control and they are not. "Submit papers to" decides what happens to your own paper going forward. "Compare against" is a separate setting that decides what your paper gets checked against right now: the student repository, the institution's repository, the live and archived internet, and licensed periodicals and journals.
An instructor could, in principle, check your paper against every one of those sources while also selecting "Do not store" for the submission itself. Your paper gets compared against everything and stored nowhere. Or the reverse: an instructor could store your paper in the standard repository while deselecting some comparison sources for that particular run. The two settings move independently, and conflating them is where most of the confident-sounding answers on this topic go wrong.
Can a stored paper be deleted from Turnitin?
Yes, but not by you, and not instantly. Turnitin's "Requesting the deletion of submissions" guide, also read live on 23 September 2026, describes a four-step process. The instructor opens the assignment inbox, selects "Request permanent deletion" from the submission's options menu, picks a reason, and types DELETE to confirm. The request then sits pending, shown by a trashcan-and-clock icon, with no stated turnaround time in the guide. An administrator at the institution approves or rejects it. Turnitin Support cannot action a deletion directly, and a student cannot file the request at all; it has to go through the instructor and then the administrator.
There's a specific edge case worth knowing if a class changes settings mid-term: if an assignment's repository option is switched to "No repository" after a paper was already stored under "Standard," the guide states that the setting has to be restored to "Standard paper repository" before a deletion request for that earlier paper can even be submitted. Changing the setting going forward doesn't retroactively clear what was already stored.
How long does Turnitin keep a paper?
No fixed number is published. Turnitin's Services Privacy Policy, last updated 4 February 2026 and read live the same day as the guides above, states that retention "varies depending on its type and use," without giving a duration for submitted papers specifically. It also notes that certain records may be retained even after a deletion request, where the institution or Turnitin is legally required to keep them.
That's a real gap for anyone hoping for a specific figure, and it's also the honest answer. A paper stored under "Standard" or "Institution" repository stays there for an unspecified length of time unless someone runs the deletion process above; there is no stated automatic expiry.
This is the same shape of answer we found when we checked how long the similarity-checking step itself takes, which also has no single published number: see how long does Turnitin take for that separate question.
Why do sites disagree about whether Turnitin stores your paper?
Because most of them are answering a yes-or-no question that only has a three-way answer, and they're doing it without linking to Turnitin's own settings documentation. We searched the exact query "does turnitin keep record of checked works" on 23 September 2026, and no turnitin.com or guides.turnitin.com page appears anywhere on the first page of results.
Of what does rank: turnitin0.com states as a flat, universal fact that Turnitin stores submitted papers indefinitely by default. plagaireport.com states the opposite, that files are analyzed but not stored. aiturnitinchecker.com lands closest with a hedged "usually yes, most assignments keep a record," but still never names the three-option mechanism that would explain why the other two disagree in the first place.
All three write with more confidence than the primary source supports. The accurate answer isn't a single yes or no, it's "depends on a setting picked per assignment, invisible to you, with three possible outcomes." None of the ranking pages say that, which is a plainer explanation for the disagreement than assuming one of them did worse research than the others.
Does resubmitting the same paper count as self-plagiarism because Turnitin remembers it?
It can, but only under the two storage options that keep a copy. If a paper was submitted under "Standard" or "Institution" repository, a later resubmission, including a revised version submitted to a different class, can match against the earlier stored copy and show up as a source in the Similarity Report. Whether an instructor treats that match as self-plagiarism is a policy question the report itself doesn't answer; it just surfaces the match.
Under "Do not store," there's nothing to match against later, because the paper was never added to either repository. This is one of the few places where the storage setting has a direct, practical consequence for a student beyond the abstract privacy question: it determines whether your own past work can flag your own future submission.
If the concern is specifically about a paper resurfacing through an institution's separate archive rather than Turnitin's own repositories, that's a different system covered in our piece on SafeAssign's Global Reference Database, which is Blackboard's equivalent and not the same product.
Copyleaks runs a comparable archive under a different name; we measured how its own documentation contradicts itself on this exact storage question in our piece on the Copyleaks Shared Data Hub.
Does any of this change if the paper was written with AI help?
No. The repository and deletion mechanics described here apply to storage and matching, not to how a paper was written. AI-generated or AI-edited text gets stored or not stored under the same three-option rule as anything else; the AI writing indicator is a separate feature layered on top of the same submission.
For how Turnitin's detection of AI-generated text works as its own question, see our piece on whether Turnitin detects ChatGPT, which covers the indicator rather than the storage settings on this page.
If you're trying to understand what actually happens to text run through a humanizer before submission, our AI humanizer page is the tool for that.
Checking the result afterward is a separate step, done with our AI detector; this post is specifically about what happens to the document once it's submitted, not before.
How this was made: the storage and deletion mechanics in this post come from two Turnitin Guides articles, "Optional Standard (Classic) assignment settings" and "Requesting the deletion of submissions," both read live in the browser on 23 September 2026 rather than fetched, per this site's standing sourcing rule, since fetched summaries have been wrong before. The retention statement comes from Turnitin's Services Privacy Policy, last updated 4 February 2026, also read live the same day. The three-way SERP contradiction was measured by searching the exact target query on 23 September 2026 and reading what the top three organic results state in their own text, quoted directly rather than paraphrased into agreement. We have not tested how quickly a deletion request is actually approved in practice, since that depends on an individual institution's administrator and isn't disclosed in Turnitin's public documentation; the guide states the workflow but not a turnaround time, and this post does not invent one. Drafting is AI-assisted with a person verifying each claim against its primary source before publishing.
Frequently asked questions
Does Turnitin automatically delete papers after grading?
No. Nothing in Turnitin's own settings guide describes an automatic deletion after grading, a term, or any fixed period. A paper stored under the Standard or Institution repository option stays stored until someone runs the manual deletion request process, which needs both an instructor to file it and an administrator to approve it.
Can a student request their own paper be deleted from Turnitin?
Not directly. Turnitin's guide describes the deletion request as something an instructor initiates from the assignment inbox, followed by administrator approval. A student who wants a paper removed has to ask the instructor to start that process; there is no student-facing deletion control described in Turnitin's documentation.
If my paper is stored, will it be compared against my own future submissions?
Yes, if it was submitted under the Standard or Institution repository option. A later paper, including a revised version submitted to a different course, can match against the earlier stored copy and appear as a source in the new Similarity Report. Under the "Do not store" option, there is no earlier copy to match against.
Does 'No Repository' mean Turnitin doesn't check the paper at all?
No, and this is a common mix-up. "No Repository" (Turnitin's own guide calls it "Do not store the submitted papers") still generates a full Similarity Report by checking the paper against whatever sources are selected under "Compare against." Only the storage outcome changes; the paper simply isn't added to either repository afterward.
Is there an official published number for how long Turnitin keeps a paper?
No. Turnitin's Services Privacy Policy, updated 4 February 2026, states that data retention "varies depending on its type and use" without giving a specific duration for stored submissions. Any page quoting a fixed retention period for Turnitin papers is not sourcing it from Turnitin's own current policy.
Who decides whether my paper gets stored, and can I find out?
The instructor decides, per assignment, when creating or editing it in Turnitin. The student submission interface does not display which repository option is active. The only reliable way to find out for a specific assignment is to ask the instructor directly.
