— visa rules and processing details change without notice; this article covers process and evidence, not rules that can go stale.
Applicants often ask which English test is "easiest," as if that were the right question. It isn't. The right question is which test is actually accepted by the specific institution and the specific immigration authority you're applying to, because a strong score on a test that isn't accepted for your purpose is a wasted effort — however well you performed. Start from acceptance, then pick the format that suits you within the tests that qualify.
What each test is generally used for
IELTS is the most broadly recognised test across academic institutions and immigration authorities worldwide, and remains the safest default where you're unsure what's accepted. PTE Academic has grown in acceptance considerably, particularly for university admissions, and its fully computer-marked format appeals to some applicants for its consistency. The Duolingo English Test is accepted by a growing number of institutions, especially for admissions purposes, but its acceptance by immigration authorities specifically is far less universal — never assume it will satisfy a visa requirement just because a university accepted it for admission. OET is different again: it's built specifically for healthcare professionals — nursing, medicine, dentistry, and related fields — and uses profession-specific material, so it's the wrong choice outside that context.
Format differences worth knowing before you choose
The tests differ in delivery method, how speaking is assessed (a live conversation with an examiner versus a recorded response scored by a computer or reviewer), and how the sections are structured and timed. Some people perform noticeably better speaking to a person than into a microphone alone, or vice versa — if you have a strong preference either way, it's worth weighing in your choice, provided the test is actually accepted for your purpose.
Check acceptance before you register, not after
This is the step most commonly skipped. Before booking any test, confirm directly with the specific institution (for admission) and the specific immigration authority (for the visa) that the test and the score band you're aiming for will actually be accepted for your intended purpose. Requirements vary by course, by visa category, and by destination, and they change. A test that satisfied a visa requirement for a friend's application is not confirmation it will satisfy yours.
Retakes and how long a score stays valid
If your first attempt falls short, most tests can be retaken, though how soon and how often varies by test provider. Test results also generally carry a validity period beyond which institutions and authorities will no longer accept them — always check the current validity period directly with the test provider and the receiving institution or authority, since this is exactly the kind of detail that shifts over time and shouldn't be assumed from memory.
If you need the test for more than one purpose
Some applicants need a single test result to satisfy both a university admission requirement and a separate visa requirement. Where that's the case, checking acceptance matters twice over — a test accepted by the university you're applying to isn't automatically accepted by the immigration authority handling your visa, and the reverse is equally true. If one test genuinely covers both purposes for your specific situation, it saves you sitting two separate exams; confirm that dual acceptance directly rather than assuming it from one side alone.
Registering with enough lead time
Test dates and locations can book out, particularly around peak application periods when many applicants in your area are testing at once. Once you've settled on the right test, register with enough lead time that a fully booked date near you doesn't force a rushed test just before your own deadline, or a long journey to a testing centre further away.
Choosing the right test is less about which one is reputed to be easier and more about matching your circumstances — your intended destination, your field, your comfort with each format — against what's actually accepted for the specific application you're making.