Thesis and Dissertation Editing: A Guide for Non-Native English PhD Students

A PhD thesis is often the longest document a researcher will ever write — and for many international students, it is written in their second or third language. Professional editing can make the difference between a smooth examination and a list of corrections. Here is what you need to know.

What does thesis editing include?

Ethical thesis editing works on the expression of your ideas, not the ideas themselves. A good editor will correct grammar, spelling and punctuation; improve clarity, sentence flow and academic tone; make terminology, abbreviations, numbering and referencing consistent across all chapters; and flag passages where your meaning is unclear, using comments rather than rewriting your argument.

Is it allowed to have my thesis edited?

Most universities permit professional editing of language and presentation, but many set limits — for example, prohibiting changes to content or structure, or requiring you to acknowledge the editor. Read your graduate school’s policy and discuss it with your supervisor before you order. At GlobalEdico we follow the strictest common standard: we never add content or alter your findings, and every change is visible in Track Changes.

When should I book an editor?

Book three to four weeks before your submission deadline. That allows time for editing (typically 5–12 days for a full thesis), for you to review and accept changes, and for your supervisor’s final read. Express turnaround is available for shorter documents if your deadline is close.

How much does thesis editing cost?

Pricing is per word. Standard English editing starts at US$3.15 per 250 words, with volume discounts of up to 12% for long documents. A 60,000-word thesis is usually quoted individually — email us for a custom quote and timeline. You can also edit chapter by chapter to spread the cost.

How should I prepare my thesis for the editor?

1. Send the most complete draft you have — late changes to edited text are hard to track.
2. Tell us your university’s required English (US, UK, Australian), referencing style and any template.
3. List subject-specific terms or abbreviations that must stay as they are.
4. Mention any sections your supervisor has asked you not to change.
5. Use Microsoft Word or LaTeX source; PDFs can be edited but are slower.

What common errors do editors fix in PhD theses?

• Inconsistent tense between chapters (e.g. present tense in Methods).
• Missing or incorrect articles (“a”, “an”, “the”).
• Very long sentences that combine several ideas.
• Overuse of “very”, “really”, “in order to” and other filler.
• Inconsistent spelling of the same term (e.g. “data set” vs “dataset”).
• Literal translations of expressions from the first language.

See our guide to common English mistakes in research papers for examples and fixes.

Should I choose editing or proofreading for my thesis?

If English is not your first language, choose English language editing. Proofreading is best as a final check after editing and revision. If your examiners or supervisor have commented on structure or clarity, consider substantive editing for the affected chapters.

Ready to start? Upload your thesis or a single chapter, and we’ll match you with an editor with a PhD in your field.

Frequently asked questions