IELTS Computer-Delivered (CDI) 2026: Complete Guide to the New Format, One Skill Retake & Video Speaking

Quick answer: By 2026, IELTS has moved decisively from paper to Computer-Delivered IELTS (CDI). The British Council and IDP are phasing out most paper sessions. The good news: scoring criteria are identical — same 9-band scale, same rubrics, same task types. Reading, Listening and Writing are now on computer; Speaking is still face-to-face with a human examiner (or via Video Call). The biggest practical wins: results in 3-5 days (vs 13 for paper), and the new One Skill Retake lets you retake just one of the four skills within 60 days. Fees are typically the same as paper. Strong typists (5-15% faster Writing) and visa-deadline candidates benefit most. Free CDI-style practice at English AIdol.

By Alfie Lim, TESOL-certified founder of English AIdol. Last reviewed 30 April 2026.

Why IELTS is moving from paper to computer

For nearly 30 years IELTS was a paper test. Computer-Delivered IELTS launched in 2019 and expanded gradually. By 2026, the British Council and IDP have phased out most paper sessions in major markets. Some smaller centres still offer paper for now, but the direction is clear: the future of IELTS is digital. The reasons:

• Faster results — 3-5 days for CDI vs 13 days for paper
• More test slots — computers reset between sessions in hours; paper logistics take days
• One Skill Retake only works on CDI
• Lower test centre overhead — fewer printed materials, faster scoring
• Better fraud prevention — digital activity logs and timing

What is Computer-Delivered IELTS exactly?

Computer-Delivered IELTS (CDI) is the same IELTS exam, but Reading, Listening and Writing are taken on a computer at the test centre. Speaking is unchanged — you still meet a human examiner face-to-face (or by Video Call, see below). The total test length is the same as paper: 2 hours 45 minutes including all four skills.

What is the same as paper

• Scoring criteria — identical 9-band scale
• Rubrics — Writing and Speaking marked by trained human examiners against the same criteria as paper
• Question types — same matching, multiple choice, gap-fill, summary, opinion essay, etc.
• Test structure — same sections, same number of questions, same time per section
• IELTS Academic vs General Training — both available on CDI

What is different

• Highlighter and notes are digital — you click to highlight text or add a sticky note, instead of writing on paper
• You type Writing answers — Tasks 1 and 2 are typed, not handwritten
• Listening audio is delivered through headphones with adjustable volume
• Reading passages are scrollable on screen rather than printed booklets
• Time-on-task is displayed on screen (a small countdown clock per section)
• No transferring Listening answers — you type them directly during the test (paper IELTS gives 10 extra minutes to transfer answers; CDI does not, because you are already typing into the answer box)

The biggest practical advantage: results in 3-5 days

This is the single biggest reason students choose CDI. Paper IELTS results take 13 days; CDI results arrive in 3-5 days. For students with university or visa deadlines, that gap matters. If your CAS letter, I-20, or PR visa application has a 7-day window, paper IELTS may be too slow — CDI is the only option.

One Skill Retake — the most important new feature

One Skill Retake (OSR) was introduced in 2023 and expanded globally in 2026. The feature lets you retake just one of the four skills if you scored well on three but want to improve one (commonly Writing or Speaking). You then receive a new TRF showing your higher score on the retaken skill, with the original scores for the other three skills.

One Skill Retake rules (2026)

• CDI only — not available for paper IELTS
• Within 60 days of your original test
• Same test centre as your original
• Only one skill can be retaken (you cannot retake two)
• Cost: typically 70-80% of a full IELTS fee, depending on country (e.g. USD $180-200 in the US, AUD $310 in Australia)
• You only have one chance at OSR per original test — if your retake score is lower, you can choose to keep the original score on the new TRF (universities will see whichever you choose)
• Both TRFs are valid for 2 years from the original test date
• Recognised by: all major Australian, Canadian, UK universities and migration agencies. US universities increasingly accept it. Some institutions (a small minority) still want a single sitting — verify with the specific institution.

OSR is one of the most student-friendly changes in IELTS history. Before OSR, if you scored 7.0 / 7.0 / 6.0 / 7.5 (Writing weak), you had to retake all four skills and risk losing the strong scores. Now you retake just Writing.

Video Call Speaking — same scoring, less anxiety

Video Call Speaking became globally available alongside CDI. Instead of meeting an examiner in the test centre, you sit in a private room and speak to a certified examiner over a video link. The exam is otherwise identical: 11-14 minutes, three parts, same questions and rubric.

Why students choose Video Call Speaking

• Reduced anxiety — no eye contact pressure
• More slot availability — Video Call examiners can be assigned from anywhere globally
• Better focus on speech — some students find body-language distractions disappear

Why some students still prefer in-person Speaking

• Easier to read examiner cues — body language helps with timing and conversation flow
• No tech anxiety — no risk of microphone/connection issues
• More natural conversation for some test takers

Both formats are scored identically by trained Cambridge examiners. There is no scoring difference whatsoever — the choice is purely personal preference.

Who benefits most from CDI?

Strong CDI candidates

• Strong typists (40+ wpm). Typing is faster than writing for most students under 30. The 60-minute Writing test feels less rushed if you can type.
• Students with visa or admission deadlines. The 3-5 day results window can save your application.
• Students wanting One Skill Retake protection. If you are gambling 7+ in one weak skill, OSR is a safety net only CDI offers.
• Students who concentrate better on screen. Many digital-native students (under 30) actually read faster on screen than on paper.

Candidates who may still prefer paper (if available)

• Slow typists who hand-write faster than they type
• Older candidates who grew up writing essays by hand
• Students who annotate heavily with arrows, circles and underlines on paper
• Students with screen fatigue issues

How much does Computer-Delivered IELTS cost in 2026?

CDI fees are typically the same as paper IELTS in each country. Country-specific fees in 2026:

• United States: USD $245-249 (very close to paper)
• Australia: AUD $410
• United Kingdom: GBP £200-205
• Canada: CAD $345-350
• India: INR ₹17,000
• South Korea: KRW ₩290,000
• Japan: JPY ¥27,500
• China: CNY ¥2,170
• Vietnam: VND 5,000,000
• Mexico: MXN $4,400

One Skill Retake typically costs 70-80% of a full IELTS fee.

How to prepare for Computer-Delivered IELTS

The most important preparation difference: practice on a computer, not on paper. Even one full mock on computer changes how confident you feel on test day. Specifically:

1. Practise typing under time pressure. Write Writing Task 1 (150 words / 20 min) and Task 2 (250 words / 40 min) on computer at least 5-10 times before test day.
2. Get used to digital highlighting and note-taking in Reading. Most students under-use these tools at first.
3. Use headphones for Listening practice — match the test-day audio environment.
4. Practise typing Listening answers directly — there is no transfer phase in CDI, so accuracy and spelling matter while you are still listening.
5. If you are doing One Skill Retake, focus 80% of prep time on the weak skill, but keep a baseline review of the others so you do not regress.

For free, comprehensive CDI-aligned practice, use English AIdol's IELTS portal — every mock test runs in computer-delivered format, with AI Writing scoring calibrated to Cambridge rubrics, AI Speaking with Video Call simulation, and 20+ full mock tests within ±0.5 band of real IELTS. The platform is built for the digital era of IELTS.

Companion resources:

• IELTS Computer Test 2026 landing page
• One Skill Retake guide
• If you are considering a fully computer-based alternative, see PTE Academic AI prep

Frequently asked questions

Is IELTS still available on paper in 2026?

Yes, but only in some smaller centres and at limited dates. The British Council and IDP are phasing out most paper sessions. Major markets (US, UK, Australia, Canada, India, China, Korea, Japan, Vietnam) now run primarily Computer-Delivered IELTS with paper as exception, not rule.

Computer-Delivered vs paper IELTS — which is better?

Scoring is identical. CDI gives 3-5 day results (vs 13 days), allows One Skill Retake, and suits typists. Paper suits slow typists or those who annotate heavily. For most students under 30, CDI is the better choice.

How does One Skill Retake work?

If you scored well on 3 of 4 skills but want to improve 1, you can retake just that one skill within 60 days at the same centre, for ~70-80% of the full fee. CDI only. You receive a new TRF with the higher score (or the original, if the retake is lower — your choice). Universities and migration agencies in Australia, Canada, UK, NZ, and most US institutions accept it.

What is Video Call Speaking and is it scored differently?

Video Call Speaking is the IELTS Speaking test conducted via secure video link with a certified human examiner. Same questions, same 11-14 minutes, same three-part structure, same rubric and same scoring as in-person Speaking. Many students prefer it for reduced anxiety; some prefer in-person for body-language cues. Pure preference.

How fast do I need to type for CDI Writing?

Most students do well at 30+ wpm. At 40+ wpm typing is faster than handwriting for the same word count, which is why strong typists often see a 5-15% boost in Writing. If you type slower than 25 wpm, practise typing for 2-3 weeks before test day, or consider paper IELTS where available.

Are there free AI tools tailored to CDI?

Yes. English AIdol runs every mock in CDI format with AI Writing/Speaking scoring calibrated to Cambridge rubrics, OSR-aware practice plans, and Video Call Speaking simulation. Free with generous daily limits.

Where to go next

1. Take a free CDI-format diagnostic mock at englishaidol.com/portal/ielts — see how you perform on screen
2. Practise typing Writing Task 1 + Task 2 on computer for at least 5 sessions
3. Read the One Skill Retake guide if you have a weak skill
4. Visit ielts.org to book your CDI session
5. Book your real exam when two consecutive mocks are above your target band

If this guide saved you time, share it with a friend studying for IELTS — sharing keeps the platform free. — Alfie Lim, founder, English AIdol