DELF, DALF, TCF or TEF: Which One Do You Need?

The choice is not really between four exams. It is between two families - diplomas and positioning tests - and the difference between them is not difficulty, it is what the document does afterwards.

DELF and DALF are diplomas. You register for one level, you pass or you fail, and a pass is permanent. TCF and TEF are measurements. There is no pass mark at all, the result simply reports the level you reached, and it expires after two years. Everything else - which version, which centre, which price - follows from that.

What actually separates a diploma from a test?

A DELF or DALF session is an examination at a fixed level. You decide in advance that you are sitting B2, you are tested against the B2 descriptors, and the outcome is binary. Get it and you hold a diplôme national issued by France Éducation international on behalf of the French Ministry of Education, with no expiry date written on it anywhere.

A TCF session is the opposite design. You do not declare a level; the test finds yours. The official candidate manual is explicit that nobody can fail the TCF, because it is built as a measuring instrument. Everyone leaves with an attestation stating a score and a level.

That single distinction answers most of the questions people actually have:

• Aiming too high is free on the TCF and expensive on the DELF. Sit the DELF at B2 when you are a solid B1 and you get nothing. Sit the TCF in the same state and you get a B1 attestation.
• Aiming right is worth more on the DELF. A B2 result on a TCF is a document with a two-year clock. A DELF B2 is a qualification you never think about again.

How is each one scored?

The mechanics matter more than the marketing, because they change what you should prepare.

Two rows deserve more than a glance.

The DELF floor of 5/25. The pass mark is an average, but it is an average with a trapdoor. A candidate at 62/100 who scored 4/25 in speaking has failed. This is the single most common way a well-prepared candidate loses a session, and it punishes exactly the profile self-study produces: strong reading and listening, thin production. The fix is to spend the last month on your worst skill rather than polishing your best. We counted the whole score space for the B2 session and the trapdoor turns out to be structural rather than anecdotal: just above the pass line, it refuses more profiles than the total does.

The TCF’s six bands. The global score runs from 100 to 699 and is cut into six blocks of exactly one hundred points: 100–199 is A1, 200–299 A2, 300–399 B1, 400–499 B2, 500–599 C1, 600–699 C2. The boundaries are fixed and do not move between sessions - what varies is how many items you need to reach them, because the raw score is calibrated for the difficulty of the version you happened to sit. So 400 always means B2, and 399 always does not.

Which version does your procedure accept?

You rarely get a free choice of four. The procedure picks the family, and often the exact version, before you do.

The IRN suffix stands for Intégration, Résidence et Nationalité, and those versions exist because the French administrative procedures need a narrower, cheaper test than the full academic one. Note one recent change that is not yet reflected everywhere: since 1 April 2025 the TEF IRN certifies levels A1 through B2, which is what made it usable for the new B2 naturalisation threshold.

The French thresholds themselves all moved up a step on 1 January 2026 - the detail is in the guide to French levels for citizenship and, for the residence ladder, the guide to French levels for a visa or residence permit. Quebec does not use the CEFR at all, which is covered in Quebec French versus France French.

The university row is narrower than reality too. We read 48 admission requirements published by 28 French universities and found that the level is set by the faculty, not the institution: ten of them publish two different levels depending on the department, and the DELF B2 score demanded ranges from the official 50 out of 100 up to 75.

The Quebec row above is also narrower than reality: the ministry’s list runs to eight accepted documents, DELF and DALF included, and the choice between them is set out in TEFAQ vs TCF Québec.

Why does the two-year clock matter so much?

Because administrative timelines are longer than the document.

A naturalisation file is frequently under review for well over a year. An attestation that was current on the day you filed can quietly expire mid-procedure, and a préfecture that asks for an up-to-date document at that point has sent you back to a test centre - a second registration fee, a second session date, and a second wait.

A DELF diploma cannot do that to you. The preparation is broadly the same amount of work, the fee is in the same range, and the document is permanent. If your procedure accepts both and your deadline is not urgent, the diploma is the strictly better purchase.

There is one jurisdiction where that advantage disappears entirely. Quebec requires your results to be dated two years or less at the date you submit, whether they come from a test or a diploma, so a DELF B2 passed four years ago is still a valid diploma and still will not serve - the exception is explained in TEFAQ vs TCF Québec.

The case for the TCF or TEF is real but narrow: sessions are far more frequent, results come back in weeks rather than months, some procedures accept nothing else, and if you genuinely do not know your level, a test that cannot fail you is the safer instrument.

How much preparation does the level itself take?

Neither format changes the underlying answer, which is a question about the level, not the exam.

These are teaching conventions rather than measurements of you; the arithmetic by study pace is worked through in how long it takes to learn French.

Exam-specific preparation is worth doing, but it is worth much less than people spend on it. Past papers teach you the format - how long the production écrite runs, what the exposé expects - and that is a weekend, not a semester. It does not move your level. What moves your level is the grammar sequence, published unit by unit in French grammar by CEFR level, and volume of input you can mostly follow, which is the method in how to learn French by reading.

The gap worth budgeting for is B1 to B2, the longest single step on the scale and precisely the one the 2026 reform added to the citizenship path - what separates the two levels is a specific and auditable list, not a vague matter of fluency.

What should you do next?

Three questions, in order.

Does your procedure name a version? If it says TCF IRN, TEF Canada or TEFAQ, the decision is made and the rest of this article is background. Check the current list with the authority handling your file rather than with a blog, including this one.

If you have a real choice, do you have a deadline? No deadline means DELF, for the permanence. A deadline inside a few months usually means TCF or TEF, for the session frequency.

Do you know your level well enough to bet a fee on it? If not, sit a positioning test first, or measure yourself against material: read a page at your assumed level and count the stops. More than twice per page and you are a level above yourself.

That last question is the one Gallus is built to remove. The A1 to C1 curriculum is split into 61 levels and 424 grammar points, each taught through graded stories, so the level you are studying at is a known quantity rather than a guess made the week before an exam.