What TEFL Certifications Do Online Companies Actually Accept?
Platform Requirements Are Not All the Same
One of the most common sources of confusion for new online English teachers is the assumption that any TEFL certificate will satisfy any platform. This is wrong — and finding out after you've completed a course is frustrating and expensive.
Online English teaching platforms vary significantly in their certification requirements, and understanding those differences before you choose your course saves money and time.
Here's a platform-by-platform breakdown of what the major companies actually need.
Cambly
Minimum requirement: None formally stated (for most tutor roles). Cambly's entry barrier is intentionally low — US/UK/Canadian/Australian native English speakers can apply without any formal certificate.
With a TEFL certificate: Having any TEFL certificate puts you in a stronger position for Cambly Plus (the more structured, session-based tier) and generally results in slightly higher student ratings due to more structured conversations.
Verdict: If Cambly is your primary platform, a TEFL certificate isn't strictly required — but the low bar is reflected in the pay (~$10.20/hr). Use Cambly as a supplemental income stream while building credentials for higher-paying platforms.
iTalki
Community Tutor: Requires "proof of English teaching or tutoring experience OR a teaching certificate." A 120-hour TEFL certificate satisfies this. Community tutors set their own rates (typically lower) and are not required to hold a formal teaching degree.
Professional Teacher: Requires a formal teaching qualification (degree in education or CELTA/Trinity equivalent). Professional teachers can charge higher rates and appear in a separate search category.
Verdict: For most new teachers, the Community Tutor track is accessible with a standard 120-hour TEFL certificate. Progressing to Professional Teacher status requires more advanced qualifications.
Preply
Minimum requirement: A TEFL, TESOL, or CELTA certificate, OR a teaching degree, OR demonstrated tutoring experience. The platform does interview applicants and reviews their credentials.
What Preply prefers: Evidence of structured teaching experience and a professional-looking profile. A genuine 120-hour accredited TEFL certificate generally satisfies their requirements.
Commission structure: Note that Preply takes a significant commission (initially 33%) that reduces as you accumulate hours with each student. This front-load commission model means your effective hourly rate starts lower than advertised.
Verdict: Standard 120-hour TEFL from an accredited provider is accepted. Apply with a detailed profile and professional intro video.
Outschool
Minimum requirement: US-based platform for K-12 classes. No specific TEFL certificate is required, but teachers must pass a background check and demonstrate qualifications appropriate to the classes they want to teach.
For ESL/English classes: A TEFL certificate is useful supporting evidence for English language classes. Many successful Outschool teachers in ESL niches have TEFL certificates alongside their profiles.
Verdict: More entrepreneurial than standard tutoring — you create your own class listings and market them. A TEFL certificate helps but isn't mandatory. Best for teachers comfortable with self-promotion.
Verbling
Minimum requirement: A teaching certificate (TEFL, TESOL, CELTA) or a formal teaching qualification from an accredited university.
What they check: Verbling has a more thorough vetting process than some platforms, including a sample lesson submission and interview. Quality standards are higher.
Verdict: Accessible with a quality 120-hour TEFL certificate, but expect a more thorough screening process. Higher average student quality and rates than entry-level platforms.
What About Platforms That Have Stopped Hiring?
Several large platforms that previously hired large numbers of online TEFL teachers — most notably VIPKid and GoGoKid — significantly reduced or suspended hiring of foreign teachers following Chinese regulatory changes in 2021 (the "double reduction" policy). Some have pivoted to adult learners or other markets.
If you encounter recommendations for specific Chinese K-12 platforms from guides written before 2022, verify whether they are still actively hiring foreign teachers before applying.
What Certificate Features Matter Most to Platforms?
Across platforms, the key attributes of an acceptable TEFL certificate are:
Accreditation: The certificate should be from a recognised awarding body, not self-certified by the provider. Most platforms don't specify which accreditation body, but they can verify legitimacy if they choose to.
Hour count: 120 hours is the most commonly cited minimum. Shorter certificates (40–60 hours) are often insufficient for professional teacher tiers on major platforms.
Observed teaching practice: While not always specifically required by platforms in their job listings, observed practice gives you verifiable teaching experience to list on your profile.
Recency: Certificates older than 5 years may trigger additional questions from some platforms. Ongoing CPD (professional development) demonstrates continued commitment.
Summary: Quick Reference by Platform
| Platform | Minimum Certificate | Ideal Certificate |
|---|---|---|
| Cambly | None required | Any TEFL cert |
| iTalki (Community) | TEFL or experience | 120hr accredited |
| iTalki (Professional) | Formal qualification | CELTA / degree |
| Preply | TEFL/TESOL/CELTA | 120hr accredited |
| Verbling | TEFL / teaching qual | 120hr+ with practice |
| Outschool | Background check | TEFL helpful |
The safest investment is a 120-hour accredited TEFL certificate from a recognised provider — it satisfies requirements across all major platforms and gives you flexibility to work across multiple simultaneously.