The honest answer
Yes — for the right person. A 120-hour TEFL course typically costs £100–300. Most teachers recoup this in their first month of teaching. Over a two-year stint in Thailand or Vietnam, a TEFL certificate directly unlocks earning potential that pays back the course cost hundreds of times over.
That said, TEFL is not for everyone. If you are not genuinely interested in teaching, working with people or living abroad, the certificate alone will not make it worthwhile. But if you want to live and work in SE Asia, East Asia or the Middle East — and earn while you do it — TEFL is one of the most effective qualifications you can have.
The numbers: what TEFL actually costs vs earns
At $1,200/month in Thailand with low living costs, a teacher can realistically save $400–700/month. A £149 course investment is recovered in less than two weeks of work.
Who TEFL is right for
Ready to make the investment?
The 120-hour course takes 4–6 weeks and pays for itself in your first month of teaching.
Frequently asked questions
How quickly can I start earning after a TEFL course?
Most teachers find their first role within 4–8 weeks of completing their certificate. From starting your TEFL course to your first paycheck is typically 10–16 weeks.
Is TEFL demand growing or shrinking in 2026?
Demand remains strong across SE Asia, the Middle East and East Asia. Vietnam, Thailand, Indonesia and the UAE are all active markets. Online teaching has also expanded the global market significantly.
Can TEFL lead to a long-term career?
Yes — many TEFL teachers build careers spanning 10–20 years, progressing from language centres to international schools, teacher training roles, materials development and academic management.
What if I complete the course and decide not to teach?
The communication, cross-cultural and planning skills developed in a TEFL course have value beyond the classroom. Many former TEFL teachers cite it as valuable for business, project management and client-facing roles.