IELTS vs TOEFL vs Duolingo English Test: Which One Should You Take in 2026?
Published on February 20, 2026 • 7 mins read
Three English proficiency tests. Wildly different price tags. And every student I've ever taught has asked me the same question: which one actually matters? The honest answer is that the right test depends entirely on where you're going - and knowing the difference upfront can save you hundreds of dollars and months of misdirected prep.
This guide covers IELTS, TOEFL, and the Duolingo English Test (DET) - the three tests that between them dominate the "which English exam should I take" decision in 2026. If you're only reading comparisons of the first two, you're missing the story.
IELTS vs TOEFL 2025: Where You're Applying Decides the Test
Here's the shortest answer I can give you: if you're applying to universities in the UK, Australia, or New Zealand, IELTS is almost always the safer choice. UK visa authorities require what they call a Secure English Language Test (SELT), and IELTS Academic is on that list. TOEFL is not. That alone makes the decision easy for a large portion of students.
If you're heading to the United States or Canada, TOEFL has the longer institutional history - it's been around since 1964 - and is accepted essentially everywhere. But IELTS has closed that gap significantly over the past decade and is now accepted by virtually all US universities too. For Canada, both work for university admissions, and the SELT issue for student visas doesn't apply the same way it does in the UK.
The practical tip: don't pick a test based on geography alone. Check the admissions page of your target program directly. Some US STEM graduate programs specify minimum TOEFL scores with no IELTS equivalent listed. Some UK programs that accept both will specify an IELTS band with no DET equivalent. Always verify.
The Duolingo English Test Is No Longer the "Easy Alternative" - It's a Real Option
Most IELTS vs TOEFL comparison articles completely ignore the Duolingo English Test. That's a mistake, because the DET has quietly become one of the most accepted English proficiency tests in the world. As of 2025, it's accepted by over 6,000 institutions across 110+ countries, including all Ivy League undergraduate programs, MIT, Stanford, and a growing number of UK universities like Imperial College London and the University of Southampton.
The cost difference is significant. IELTS and TOEFL typically run $200–$260 depending on your country and test centre. The DET costs $65. For a student in Nigeria, Vietnam, or Brazil who may need to retake the test, that gap is not trivial - it's the difference between being able to afford a second attempt or not.
Results arrive in 48 hours. The test is taken at home on your own computer, with no travel to a test centre. And the format - adaptive, 45–60 minutes - feels more like a language workout than a sit-down exam. For students who freeze up in formal testing environments, this matters.
Here's the catch: the DET is not on the UK's SELT list, which means it usually cannot be used for UK student visa applications. If you're going to the UK specifically, this is a dealbreaker for most applicants - check your specific situation with the institution before registering. Australia also has restrictions on DET for visa purposes at certain university levels.
Which Test Is Actually Easier? An Honest Answer by Section
Every student asks this, and most guides dodge it. I won't.
Reading: TOEFL reading passages are longer and more academic than IELTS, with multiple-choice questions that test inference and passage structure. IELTS reading includes more varied task types - matching headings, True/False/Not Given, sentence completion - and many learners find the True/False/Not Given section particularly confusing because "Not Given" is a different judgment than "False." Neither is objectively harder, but learners trained in multiple-choice formats often find TOEFL more familiar.
Listening: TOEFL listening uses North American accents almost exclusively, often in academic lecture formats. IELTS uses a much wider range of accents - British, Australian, South African - across both conversational and academic scenarios. If you've trained primarily on American content, TOEFL listening tends to feel more natural at first. If your input has been diverse, IELTS is not harder, just different. If this is a gap in your prep, the complete guide to advanced English listening skills is worth reading before you start either test's official practice materials.
Speaking: This is where the tests diverge most. TOEFL speaking is done into a microphone. You record your response to a prompt, and a human scorer reviews it later (sometimes supported by AI scoring tools). IELTS speaking is a face-to-face interview with a certified examiner, lasting 11–14 minutes, covering personal topics, a short monologue, and a discussion. Most learners I've taught find the IELTS speaking interview more nerve-wracking initially, but also more rewarding - it feels like a real conversation, and strong conversational ability is easier to demonstrate than in a recorded prompt response.
Writing: TOEFL writing involves an integrated task (reading + listening → essay) and an extended academic discussion post. IELTS Academic writing includes a Task 1 that requires describing a graph, chart, map, or diagram - a task type many students never encounter in regular study. This specific task trips up more learners than any other section across all three tests.
The DET writing and speaking sections are shorter and more fragmented - you get prompts like "Describe what you see in this image" or "Speak about a topic for 90 seconds." The test adapts based on your responses. It's not easier in terms of language skill required, but the format is less intimidating for many test-takers, especially those unfamiliar with formal exam structure.
Bottom line: if you have strong academic writing habits, TOEFL or IELTS Academic will suit you. If you're a strong spontaneous communicator but struggle with formal essay structure, the DET may play to your strengths - assuming your target institutions accept it.
Which Test Are Institutions Most Skeptical Of?
This is the question nobody asks directly, but it's on the minds of admissions committees. Let's be real about it.
The DET has faced scrutiny since its launch. Taking an English test at home, unmonitored, is a fundamentally different security environment from a proctored test centre. Duolingo has invested heavily in anti-cheating technology, including video monitoring, keystroke analysis, and human review - and their certification process flags suspicious results for manual inspection. But some institutions have expressed concerns, and a small number only accept DET as a supplementary measure alongside TOEFL or IELTS, not as a primary credential.
IELTS and TOEFL, taken in person at certified centres, carry decades of institutional trust. For highly competitive programs - top-tier medical schools, law programs, or research-intensive PhDs - the in-person tests still carry more weight in practice, even when the DET is officially listed as accepted.
The counterintuitive truth here: IELTS is harder to "fake" by way of preparation shortcuts than TOEFL, because the speaking interview is live and unpredictable. A learner who has memorized essay templates and practiced recorded responses can game TOEFL writing and speaking to a degree. The IELTS examiner can ask follow-up questions, change direction, and probe inconsistencies in real time. That's actually why many European and South Asian institutions that have the choice prefer IELTS - it's a harder format to game.
Quick Decision Framework: Which Test Should You Register For?
Run through this before you book anything:
→ Applying to UK or Australian universities for visa purposes? Use IELTS Academic. Do not use DET for the visa process. Check if TOEFL is accepted for the specific visa route you need.
→ Applying to US or Canadian universities, flexible on format? All three tests are widely accepted. If budget is a concern, DET is a legitimate option for most programs. If you're targeting a highly selective research program, use IELTS or TOEFL for the institutional credibility advantage.
→ Need results in under a week? DET delivers scores in 48 hours. IELTS UKVI online results take 5–7 days. TOEFL scores typically arrive in 4–8 days.
→ Struggling with formal exam anxiety? DET's shorter, at-home format reduces anxiety for many learners. But do a realistic self-assessment: if you don't have a quiet, private room and a reliable computer, the "convenience" of at-home testing can become a stressor.
→ Want to retake if the score isn't enough? DET allows you to retake immediately with no waiting period. IELTS and TOEFL have minimum gaps between attempts (TOEFL requires 3 days between tests). At $65 per attempt vs $200+, DET makes retakes economically realistic.
Before You Start Prep: Know Your Baseline
One of the most common mistakes I see is students diving into test-specific preparation without knowing where their English actually stands. They spend three months on IELTS reading strategies when their real weakness is vocabulary range, which would have taken six months to address at the root level.
Before committing to test prep, take a level assessment. If you're scoring at B1 on a reading comprehension test, you're not ready for IELTS Academic prep - a B1 typically maps to an IELTS 4.0–5.0, which falls short of the 6.0–6.5 most undergraduate programs require. Check the full score equivalency table to see the gap you're working with.
Use the free CEFR-aligned level tests on esl-tests.com to get your baseline reading and grammar score before you start spending money on preparation materials. The grammar practice tests are also a useful diagnostic - IELTS and TOEFL both penalize grammatical accuracy heavily in the writing and speaking bands, and most learners at B1–B2 have specific recurring errors that, once identified, are fixable within a few weeks.
If your listening comprehension needs work, the listening practice tests on esl-tests.com are aligned to CEFR levels and use the kind of accent variety IELTS requires - which most free listening resources on the internet do not.
Which Test Should You Take? The One-Question Shortcut
Before anything else: where are you applying, and does the visa process constrain your options?
If the answer to that question is "UK visa" or "Australian visa at certain university levels," the decision is largely made for you - IELTS Academic, full stop. If you have genuine flexibility, DET is a financially smart option that now has serious institutional backing. And if you're going to a US university where TOEFL has deep historical relationships with your specific department, it's worth checking whether a strong TOEFL score might carry even marginal weight over a DET score of equivalent proficiency.
Run a quick level check on esl-tests.com first, find your CEFR baseline, then use the IELTS, TOEFL and DET score equivalency table to see exactly what band or score you're targeting at your level - and then invest your prep time where your language actually needs work.