How to Remove Plagiarism from Your Thesis: Step-by-Step Guide for Indian Students (2026)

Your thesis submission date is weeks away, and your Turnitin report just came back above the safe threshold. It happens to nearly every Indian PhD scholar at some point — and usually at the worst possible time. The good news: plagiarism in a thesis isn’t always intentional, and it’s almost always fixable. Whether your similarity score is 25% or 65%, there are specific, proven steps you can take before submission and after review. This guide walks you through exactly what to do, in the right order, based on UGC 2018 requirements.

Key Takeaways

• UGC 2018 classifies thesis similarity into four levels; anything above 40% carries serious academic consequences including mandatory resubmission or debarment
• Most similarity problems come from paraphrasing gaps and missing citations — both are fixable before final submission
• Manual paragraph-by-paragraph rewriting consistently outperforms automated spinning tools for passing Shodhganga and institutional checks

Table of Contents

1. What You Need Before You Start
2. Step-by-Step: How to Remove Plagiarism from Your Thesis
3. Common Mistakes That Keep Your Score High
4. What to Do If Your Similarity Score Is Still Too High
5. Conclusion

What You Need Before You Start

Jumping straight into rewriting without the right materials is the single biggest time-waster in thesis plagiarism removal. Under the UGC (Promotion of Academic Integrity and Prevention of Plagiarism in HEIs) Regulations 2018, Indian universities must check thesis submissions using approved detection software before evaluation. You need four things in front of you before you touch a single sentence.

Your full similarity report. Don’t guess — get the actual report from Turnitin, Drillbit, or iThenticate, whichever your institution uses. A full report shows exactly which sections are flagged, which sources matched, and what percentage came from web content versus published papers versus the student submissions pool. If you don’t have direct access, ask your guide or department administrator — most will share it once they know you’re actively working on it.

Your institution’s accepted threshold. Most Indian universities set ≤10% total similarity for PhD theses per UGC 2018. Some are stricter; some have separate rules for literature review chapters. Mumbai University and DU, for instance, treat this differently from central universities. Confirm the exact number with your supervisor before starting — the target changes everything about how much rewriting is actually required.

A working bibliography of your actual sources. If you’ll be adding or fixing citations, you need to know which sources you genuinely read and used. Compile this in Zotero or Mendeley (both free) before you start. This step also surfaces citation gaps — sources you drew on but never formally credited, which often turn out to be the main driver of your similarity score.

Enough time. Proper plagiarism removal takes 3–5 days for a full 150-page thesis if you’re working independently. If your deadline is under 48 hours, skip ahead to the section on professional help.

Step-by-Step: How to Remove Plagiarism from Your Thesis

Step 1: Understand where your similarity is actually coming from

Not every matched section is a genuine problem. Open your similarity report and review the source breakdown before rewriting anything. Turnitin allows you to exclude the bibliography, properly formatted quotations, and small matches below a set threshold. Many students find their apparent 35% score drops to under 15% once these standard exclusions are applied. Work on what remains — that’s your real problem, not the full reported percentage. Start here, not with the rewriting.

Step 2: Prioritise your highest-matching sections first

Your similarity report colour-codes matches by section. Start with the highest-percentage areas — typically the literature review and methodology chapters, where students often summarise published work too closely. Fixing these two sections first commonly brings the total score down by 15–25 percentage points. Don’t scatter your effort across the whole thesis before you’ve addressed the biggest contributors — that’s how people spend four days working and still submit above threshold.

Step 3: Rewrite flagged content in your own words

For each matched paragraph, close the source material and write from memory what the idea means. Don’t look at the original while you write — that’s the technique that produces genuinely different phrasing. After you’ve drafted your version, check it against the source for factual accuracy. This note-then-write approach is what professional academic editors use. It takes longer than a paraphrase spinner, but it works where spinners don’t.

Step 4: Fix citation gaps before rewriting anything

In our experience, citation gaps account for roughly a third of flagged content in Indian theses. If a sentence is flagged because you used a concept from a published paper without referencing it, the fix is simple: add the citation. You don’t need to rewrite the sentence at all. Always check flagged sections against your bibliography first. Rewrite only what can’t be resolved with a correct reference.

Step 5: Use direct quotation correctly for content that can’t be paraphrased

Definitions, legislation, and precise statistical findings often can’t be meaningfully paraphrased without losing accuracy. Use direct quotes for these — but format them properly. A quote under 40 words goes in inverted commas with an in-text citation. A quote over 40 words is formatted as a block quote: indented, no quotation marks, with a citation. Most similarity tools can be configured to exclude correctly formatted quotations from the similarity count.

Step 6: Audit and repair your bibliography

Reference list errors affect your similarity score, but they’re also academic misconduct independently of the score. Verify that every source you cited in the text appears in the bibliography, and that every bibliography entry corresponds to at least one in-text citation. Use your institution’s preferred style guide or the citation formatting service for your target journal to resolve inconsistencies. A clean bibliography signals academic rigour to examiners beyond what any software score shows.

Step 7: Address self-plagiarism from previously published work

If you’ve published a conference paper, journal article, or MPhil chapter before your PhD thesis, that content may appear as a similarity match — even though you wrote it. Under UGC 2018, reusing your own work without attribution counts as self-plagiarism. Fix it by paraphrasing, citing the original publication, or including a formal disclosure statement with your supervisor’s approval. Shodhganga’s ShodhShuddhi system checks against more than 600,000 existing Indian theses, so undisclosed reuse is reliably caught. This is where most thesis supervisors disagree, by the way — UGC rules don’t exempt prior publications, whatever guidance you may have received.

Step 8: Run a fresh similarity check before finalising

After completing your edits, generate a new similarity report and compare it section by section with your original. Confirm the score dropped in the right places. This step catches a common problem: new matches accidentally introduced during rewriting, often from a sentence copied from a style guide, a methodology template, or a departmental writing guide. Many students skip this verification step and submit — only to face a rejection they could have prevented in an hour.

Step 9: Get a second pair of eyes on rewritten sections

Once your score is below the institutional threshold, ask a fellow researcher or academic editor to read the sections you revised. Plagiarism removal edits can break the logical flow of an argument even when the grammar is correct. A fresh reader catches passages that are technically fine but conceptually awkward — a problem examiners notice even if the software doesn’t flag it. Two hours of peer review at this stage can save weeks of post-submission correction.

Step 10: Submit through the official Indian research channels

Indian PhD students must submit through their institutional repository and Shodhganga (operated by INFLIBNET Centre), which houses over 600,000 theses from 950-plus member universities. The ShodhShuddhi software, distributed to more than 1,100 institutions, cross-checks every submission against this entire pool. Make sure your final report is below the accepted threshold before uploading. Once your thesis enters Shodhganga, it becomes part of the comparison database for every future submission across India.

Common Mistakes That Keep Your Score High

Five errors account for the majority of similarity problems that persist after a first round of editing. Each one is avoidable once you know what to watch for — and yet they come up again and again.

Using QuillBot or other paraphrase spinners. These tools change individual words but preserve the original sentence structure. Turnitin’s algorithms are specifically designed to detect this pattern. Beyond the technical failure, machine-spun text reads poorly in a formal thesis — examiners notice the stilted phrasing even before checking the similarity report. The result is a failed similarity check and a thesis that raises questions about your writing.

Deleting citations to lower the score. Some students remove a reference when they see it flagged in the report. This is the wrong move. An uncited match is potential plagiarism; a cited match, once properly formatted, can often be excluded from similarity calculations entirely. Removing references turns a manageable citation gap into a serious integrity problem. Never delete a reference to improve a similarity score.

Rewriting only the highlighted paragraphs. Turnitin shows what it caught, not everything that needs attention. Sections just below the flagging threshold may still contain under-cited content. A proper revision reviews every paragraph, not just the highlighted ones. The goal isn’t to clear the flags — it’s to produce a thesis that genuinely reflects your own analysis and correctly credits its sources.

Underestimating the literature review chapter. Consistently the highest-similarity section in Indian theses. Students often summarise published papers without adequate paraphrasing or critical synthesis, treating the literature review as a catalogue of findings rather than an analytical contribution. In most Indian universities, it takes longer to properly rewrite this chapter than all other sections combined.

Starting too late. Discovering a high similarity score with 24 hours to submission means either a rushed partial fix — which frequently creates new problems — or a formal extension request. Start your similarity review at least one week before your final submission deadline. Not the day before.

What to Do If Your Similarity Score Is Still Too High

If you’ve worked through all ten steps and the score is still above your institution’s threshold, the path forward depends on where the number actually sits.

Score 11–25%, one chapter is driving it. This range is manageable. Identify the single chapter (typically literature review or methodology) and do a focused paragraph-by-paragraph rewrite using the note-then-write method from Step 3. Most students in this range get below 10% in two to three focused sessions of three to four hours each. Take the time and do it properly.

Score 26–40%, spread across multiple chapters. Spot fixes won’t work here. You need a structured chapter-by-chapter edit, working from highest-matching to lowest. If your deadline is within two weeks, consider whether professional editing support is practical — a subject-matched editor can typically reduce a multi-chapter thesis by 20–30 percentage points in 48–72 hours.

Score above 40%, approaching your deadline. Under UGC 2018, this triggers formal consequences. Level 2 (40–60%) means debarment from resubmission for one year. Level 3 (above 60%) means PhD registration cancellation. Don’t attempt a solo last-minute fix at this level — talk to your supervisor immediately and seek professional help.

At Research Experts, our team of 27 subject-matched PhD editors has helped with more than 12,000 thesis documents since 2013. We rewrite manually, preserve your citations and argument structure, and guarantee the result falls under 10% similarity — or we keep working at no additional cost. Turnaround starts at 24 hours for urgent cases. If you’re in that bracket, take a look at how we work before you decide.

Conclusion

Removing plagiarism from your thesis is a technical challenge with clear solutions. Most similarity problems come from citation gaps, close paraphrasing, and undisclosed self-plagiarism — all of them fixable when you catch them early and work through them in order. The UGC 2018 framework is strict, but transparent: stay below 10%, cite everything, and write in your own voice. If the score won’t come down despite your best effort, our plagiarism removal service is built precisely for this situation. Your PhD is too important to risk on a rushed last-minute fix.