2026 Interactive Cost & ROI Calculator
| Plan | Effective / Mo | 1-Year Total | 3-Year Total | Plagiarism & AI Limit | Action |
|---|---|---|---|---|---|
Grammarly Free Free Forever | $0/mo | $0/yr | $0 | 100 prompts/mo Plagiarism: No | Try Grammarly Free |
Grammarly Pro Best for Teams, Business & Academic | $12/mo | $144/yr | $432 | 2,000 prompts/mo Plagiarism: Yes (Pro-Archive & web scan) | Try Grammarly Pro (Save 60% Annual) |
ProWritingAid Premium Best for Fiction & Long Manuscripts | $10/mo | $120/yr | $360or $399 once (Lifetime) | 25+ in-depth manuscript & pacing reports Plagiarism: Paid add-on credits | Try ProWritingAid |
LanguageTool Premium Best for Multilingual & Budget | $5/mo | $60/yr | $180 | Unlimited style & paraphrasing in 30+ languages Plagiarism: No | Compare LanguageTool |
Cost takeaway: Paying monthly for Grammarly Pro costs $360/year ($30/mo), whereas switching to annual billing drops the price to $144/year ($12/mo), saving you $216 per year. If you plan to keep an editor for 3+ years, compare Grammarly Pro ($432 over 3 years) against ProWritingAid Annual ($360 over 3 years).
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Last verified: October 19, 2026. For a full walkthrough of the tool, see our Grammarly review.
Grammarly does not run traditional promo codes. You will not find a working coupon to paste at checkout, and any coupon site advertising one is guessing. What actually lowers the price is the billing cycle you choose, student verification, and seasonal sales.
The single biggest year-round saving is built directly into the billing tiers: paying annually ($12/month, billed at $144/year) instead of monthly ($30/month, or $360/year). Choosing annual billing cuts your effective monthly cost by 60% and saves $216 over twelve months. Use the interactive calculator above to compare your exact 1-year and 3-year cost across every tier.
| Deal | What it saves | How to get it |
|---|---|---|
| Annual billing vs monthly | 60% off ($12/mo vs $30/mo, save $216/yr) | Choose annual billing at checkout |
| Student & educator discount (.edu / UNiDAYS) | 25% to 50% off Pro (or free via campus license) | Verify your .edu email or UNiDAYS account |
| Free trial / Free forever tier | $0/mo (100 AI prompts + core grammar) | Start on Grammarly Free |
| Black Friday / Cyber Monday | 40% to 50% off annual upgrades | Create a free account first; upgrade in late November |
If you are a college student, graduate researcher, or faculty member, never pay the full $30 monthly rate. There are three ways to claim a Grammarly student discount in 2026:
.edu or institutional email address. If your school holds a site license, your account unlocks Grammarly Pro automatically at $0 cost.Grammarly’s deepest public promotion runs during the last week of November for Black Friday and Cyber Monday, plus an occasional Back-to-School promotion in late August and September.
Here is the trick to getting the steepest discount: Grammarly emails its best 40% to 50% upgrade offers to existing Free-tier users. If you want the lowest price without paying $30 for a single month today, create a free Grammarly account now, install the browser extension, and wait for the in-app upgrade banner or email promotion to trigger.
Grammarly’s lineup is now Free, Pro, and Enterprise. In late 2024 the company renamed its paid Premium plan to Grammarly Pro and retired the old standalone Business tier; Pro now covers both individuals and teams, with the custom-priced Enterprise plan for larger organisations. If you are weighing the upgrade, our Grammarly Free vs Pro comparison breaks down every feature and prompt limit.
Affiliate disclosure: the Grammarly links above are affiliate links. We may earn a commission at no extra cost to you. It does not change the price you pay.
Yes. Students with a valid school email (.edu) or a verified UNiDAYS account can get 25% off Grammarly Pro, and many universities provide Grammarly Pro free through a campus-wide Grammarly for Education license. Always check with your university library or IT portal before paying out of pocket.
No. Grammarly does not use checkout promo codes. Discounts are applied directly through billing tier selection (60% off on annual billing compared to monthly), verified student portals, or seasonal sales like Black Friday.
Grammarly Pro costs $30 per month when billed monthly ($360/year), $20 per month when billed quarterly ($240/year), and $12 per month when billed annually ($144/year). Annual billing saves $216 over twelve months.
Yes. Every late November, Grammarly runs a Black Friday and Cyber Monday promotion offering 40% to 50% off upgrades from Free to Grammarly Pro.
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