Grammarly is one of those services that needs no introduction. 30 million daily users. And their affiliate program got a refresh in 2025 — it became noticeably more interesting.
The rates look like this: $0.20 for a free account signup and $20 for a Premium conversion. Yes, the free signup payout is tiny — but it works as the top of the funnel. A user installs the extension, gets used to the corrections, and a week later sees a notification saying “you have 42 advanced writing issues, upgrade to Premium” — and they upgrade. Your $20.
Strategy
Grammarly is a service that essentially sells itself. Seriously. Try writing a post without Grammarly and show the side-by-side difference. Or record a video where Grammarly fixes a business email. This is the kind of content that works.
What else performs well:
- Articles for students (“how to write essays without mistakes”)
- Content for non-native English speakers
- Business audiences (professional correspondence, reports)
What Is Not So Great
The $20 Premium commission is not the highest on the market. For comparison — ProWritingAid pays 30% recurring. But Grammarly has a brand that converts without a fight.
Another thing: the cookie lasts 90 days. That is a long time! Users often install the free version first and upgrade a month or two later — and you still get the commission.
Who It Is For
English-language blogs and channels. For non-English-speaking audiences, Grammarly is less relevant, but if your audience is learning English — why not.
Official program site: Grammarly Affiliate Program