IELTS Writing Task 1 Task 2 Weighting: Two Thirds One Third Explained
Of the two tasks in the IELTS Writing test, Task 2 carries more weight than Task 1. Specifically, Task 2 accounts for two thirds of your Writing band score and Task 1 accounts for one third. This 2:1 weighting is fixed across both Academic and General Training versions of the test and has been in place since the modern IELTS scoring framework was introduced (Cambridge Assessment English, 2024).
The practical consequence is significant: a strong Task 2 performance can partially offset a weaker Task 1, but the reverse is not true to the same degree. Candidates who invest equal time in both tasks are systematically undervaluing Task 2. This guide explains exactly how the weighting works, how examiners convert task scores into a final band, and how to restructure your preparation and exam timing to reflect the 2:1 priority.
For a detailed breakdown of what examiners look for within each task, see the guide to IELTS Writing Task 2 band descriptors and scoring criteria. For essay structure help, see the IELTS Writing Task 2 essay structure guide.
How the IELTS Writing Band Score Calculation Works
Both Task 1 and Task 2 are marked on a band scale of 0–9 in 0.5-band increments. Each task is assessed against four criteria, each worth 25% of that task’s marks:
- Task Achievement (Task 1) / Task Response (Task 2)
- Coherence and Cohesion
- Lexical Resource
- Grammatical Range and Accuracy
The four criteria scores are averaged to produce a task band score (rounded to the nearest 0.5). The final Writing band score is then calculated as a weighted average:
| Task | Weight in final score | Example task score | Weighted contribution |
|---|---|---|---|
| Task 1 | 1/3 (33.3%) | 6.0 | 2.0 |
| Task 2 | 2/3 (66.7%) | 7.0 | 4.67 |
| Final Writing band | — | — | 6.67 → rounded to 6.5 |
IELTS final band scores are rounded to the nearest 0.5. So 6.67 rounds down to 6.5, while 6.75 rounds up to 7.0. The rounding point is exactly halfway between two half-bands. British Council (2024) confirms that the official rounding rule is to round to the nearest 0.5 band, with 0.25 intervals rounding up.
The Weighting Difference: Scenario Comparison Table
The table below illustrates how different combinations of Task 1 and Task 2 scores produce the final Writing band. It demonstrates the asymmetric impact of Task 2 performance — a one-band improvement in Task 2 moves the final score significantly more than the same improvement in Task 1.
| Task 1 score | Task 2 score | Unrounded average | Final Writing band |
|---|---|---|---|
| 5.0 | 5.0 | 5.00 | 5.0 |
| 6.0 | 5.0 | 5.33 | 5.5 |
| 5.0 | 6.0 | 5.67 | 5.5 |
| 7.0 | 5.0 | 5.67 | 5.5 |
| 5.0 | 7.0 | 6.33 | 6.5 |
| 6.0 | 6.0 | 6.00 | 6.0 |
| 6.0 | 7.0 | 6.67 | 6.5 |
| 7.0 | 6.0 | 6.33 | 6.5 |
| 6.0 | 8.0 | 7.33 | 7.5 |
| 7.0 | 7.0 | 7.00 | 7.0 |
| 8.0 | 7.0 | 7.33 | 7.5 |
| 7.0 | 8.0 | 7.67 | 7.5 |
| 8.0 | 8.0 | 8.00 | 8.0 |
Key takeaway from the table: a Task 1 score of 5.0 combined with a Task 2 score of 7.0 produces a final band of 6.5. A Task 1 score of 7.0 combined with a Task 2 score of 5.0 produces a final band of only 5.5. That is a full band difference from having the same two scores in reversed order — clear proof of the two-thirds one-third weighting asymmetry.
IELTS Writing Task 1 Task 2 Weighting: Two Thirds One Third — Time Allocation Implications
IELTS Writing gives you 60 minutes for both tasks. The recommended time split — and the split used by virtually every band 7+ candidate — is 20 minutes for Task 1 and 40 minutes for Task 2. This reflects the two-thirds weighting exactly: Task 2 is worth twice as much, so it receives twice the time.
Cambridge Assessment English examiners (2024) note that one of the most common mistakes among candidates scoring band 5.5–6.0 in Writing is spending 30 minutes on Task 1, leaving only 30 minutes for Task 2. This effectively inverts the weighting: the candidate spends equal time on a task worth one-third of their score and a task worth two-thirds of their score. The result is a Task 2 that is rushed, underdeveloped, or both.
The 20/40 rule in practice
- Minutes 0–20 (Task 1):Spend 3 minutes analysing the data or letter prompt, 15 minutes writing, and 2 minutes reviewing. Aim for 150–180 words — exceeding this does not earn extra marks and wastes Task 2 time.
- Minutes 20–60 (Task 2):Spend 5 minutes planning, 30 minutes writing (minimum 250 words, target 270–290), and 5 minutes reviewing for grammar and lexical errors.
If you finish Task 1 in under 20 minutes, do not use the spare time to add more detail to Task 1 — move immediately to Task 2 planning. Every minute spent on Task 1 beyond what is necessary returns one-third of the value of a minute invested in Task 2.
Band 9 Sample: Score Calculation Worked Example
Candidate A receives the following criterion scores from the examiner:
Task 1: Task Achievement 7, Coherence and Cohesion 7, Lexical Resource 6, Grammatical Range and Accuracy 6 → Task 1 average = 6.5
Task 2: Task Response 8, Coherence and Cohesion 7, Lexical Resource 7, Grammatical Range and Accuracy 7 → Task 2 average = 7.25 → rounds to 7.0
Final Writing band = (1/3 × 6.5) + (2/3 × 7.0) = 2.167 + 4.667 = 6.833 → rounds to 7.0
Examiner annotation:Candidate A’s strong Task 2 lifts their final band from what would have been 6.5 (if both tasks were equal weight) to 7.0. The two-thirds weighting on Task 2 is the deciding factor between a 6.5 and a 7.0 overall — the most common score threshold for postgraduate university admission worldwide (IDP Education, 2024).
Vocabulary: Score-Related Language for IELTS Writing Discussions
Weighting and calculation terms
- weighted average— an average where different inputs contribute unequal proportions to the result
- two-thirds / one-third— the exact ratio of Task 2 to Task 1 contribution in the IELTS Writing band score
- band descriptor— the published criterion description that defines what each band level looks like for a given criterion
- rounding convention— the rule by which a decimal band score (e.g. 6.75) is converted to the nearest 0.5 band (7.0)
Examiner criteria terminology
- Task Achievement (TA)— Task 1 criterion: how fully you addressed all parts of the task with accurate data
- Task Response (TR)— Task 2 criterion: how fully and relevantly you addressed the question prompt
- Coherence and Cohesion (CC)— how logically organised and connected your writing is
- Lexical Resource (LR)— range, accuracy, and appropriateness of vocabulary
- Grammatical Range and Accuracy (GRA)— variety and accuracy of grammatical structures
Preparation strategy vocabulary
- time allocation— the deliberate division of exam time across tasks or sections
- score optimisation— structuring effort to maximise the weighted return across criteria and tasks
- compensatory scoring— the degree to which strength in one area can offset weakness in another
Common Mistakes Candidates Make About the 2:1 Weighting
Mistake 1: Treating both tasks as equal priority
Splitting preparation and exam time 50/50 between Task 1 and Task 2 is the most prevalent structural mistake in IELTS Writing preparation. IDP Education (2025) consistently identifies unbalanced time allocation as the primary reason candidates score 0.5–1.0 band below their actual writing proficiency. Allocate preparation time in the 1:2 ratio (Task 1 to Task 2) from day one.
Mistake 2: Compensating for a weak Task 1 with excessive length
Writing 250+ words in Task 1 does not earn extra marks. Task 1 word count penalties apply only below the 150-word minimum — there is no bonus for exceeding it. Every word written above 180 in Task 1 is a wasted opportunity that should have gone into Task 2. Cambridge Assessment English (2024) confirms that the quality and relevance of coverage, not length, determines Task Achievement scores.
Mistake 3: Assuming a perfect Task 1 can save a poor Task 2
Even a Band 9 Task 1 score can only contribute a maximum of 3.0 to the final band score (9.0 × 1/3 = 3.0). If Task 2 produces Band 5.0, the maximum possible final score is 3.0 + 3.33 = 6.33, which rounds to 6.5. There is a hard ceiling on how much Task 1 can compensate for Task 2.
Mistake 4: Not knowing the rounding convention
Some candidates believe that an unrounded score of 6.67 rounds to 7.0. It does not — it rounds to 6.5 (the nearest 0.5 below 6.67 is 6.5, the nearest 0.5 above is 7.0; 6.67 is closer to 6.5). Knowing this prevents unpleasant surprises when a score of 6.5 appears for what felt like very strong writing.
Mistake 5: Confusing Academic and General Training Task 1 weighting
The two-thirds one-third weighting applies to both IELTS Academic and IELTS General Training. In Academic, Task 1 is a data description (chart, graph, or diagram). In General Training, Task 1 is a letter. The marking criteria differ by name (Task Achievement vs Task Response), but the weighting of Task 1 at one-third and Task 2 at two-thirds is identical across both modules (British Council, 2024).