The ISTQB® Certified Tester Foundation Level (CTFL®) v4.0 is a vendor-neutral software testing certification issued by ISTQB and recognised worldwide. It targets anyone involved in or affected by software testing, has no prerequisites, and is awarded after a closed-book exam of 40 multiple-choice questions in 60 minutes with a 65 percent pass mark. The certificate does not expire.
At a glance
| Item | Detail |
|---|---|
| Certification | Certified Tester Foundation Level (CTFL) v4.0 |
| Syllabus version | v4.0 (content release) and v4.0.1 (copyright and logo maintenance update, content unchanged) |
| Released | 21 April 2023 (v4.0); 15 September 2024 (v4.0.1) |
| Stream | Core |
| Prerequisite | None |
| Exam length | 60 minutes |
| Questions | 40 multiple-choice questions |
| Pass mark | 65 percent, equal to 26 out of 40 |
| Question style | Multiple choice covering K1 (remember), K2 (understand), and K3 (apply) levels |
| Time extension for non-native speakers | 75 minutes (an additional 25 percent) when the exam is not in the candidate’s native language |
| Languages | Multiple. Each ISTQB Member Board may translate the syllabus and exam into its national language |
| Delivery | Online proctored or test centre, depending on Exam Provider |
| Fee | Not published on the central ISTQB certification page at the time of writing. Verify with your local ISTQB Member Board or Exam Provider before booking. |
| Validity | Lifetime. No renewal cycle stated by ISTQB |
What is the ISTQB CTFL v4.0?
ISTQB® Certified Tester Foundation Level (CTFL®) v4.0 is a foundation-level professional certification offered by ISTQB that certifies a candidate’s understanding of core software testing concepts, terminology, techniques, and the role of testing across the software development lifecycle.
CTFL sits at the entry point of the ISTQB Core stream and is the gateway to every other ISTQB qualification that requires a Foundation Level certificate. The v4.0 syllabus was released on 21 April 2023 and replaced v3.1. Holders of earlier CTFL versions remain certified and no re-take is required, although they may take v4.0 to evidence the updated competencies. The English-language sunset of CTFL v3.1 syllabus, exams, and accredited training was 9 May 2024.
A maintenance update, v4.0.1, was released on 15 September 2024. It is a copyright and logo update only and does not change examinable content.
Who should take CTFL v4.0?
CTFL v4.0 targets people who need a shared, vendor-neutral vocabulary for software testing. Typical candidates include:
- Software testers, test analysts, test engineers, and test consultants
- Test leads and test managers building or hiring teams
- Developers and tech leads who own quality alongside coding
- Business analysts, product owners, and project managers working with QA
- User acceptance testers and quality managers in regulated industries
- Career changers entering QA from support, business analysis, or development
Who should not take it. Senior testers already at advanced or expert level, or those who already hold ISTQB Advanced Level certificates, will find CTFL too broad. Engineers seeking role-specific depth (test automation engineering, performance testing, AI testing) should look at the relevant ISTQB Specialist module instead.
Prerequisites and eligibility
There are no mandatory prerequisites for CTFL v4.0. You do not need a prior ISTQB certificate, a computer science degree, or a minimum number of years in QA to sit the exam. ISTQB recommends, but does not require, some practical exposure to software development or testing before attempting the exam. Identity verification is required at the exam, both at test centres and during remote proctoring.
Exam structure and rules
Format and length
The exam is a one-hour, closed-book paper of 40 multiple-choice questions. No notes, books, or electronic devices are permitted. Simple non-programmable calculators are allowed and must be supplied by the candidate.
Summary: 60 minutes, 40 questions, closed book.
Question types and K-level distribution
Most questions have a single correct answer. A small number may explicitly state that more than one answer is correct. The syllabus classifies learning objectives into K1 (remember), K2 (understand), and K3 (apply). K3 questions, which appear mainly in chapters 4 and 5, are the most time-consuming and typically expect candidates to apply techniques such as equivalence partitioning, boundary value analysis, decision tables, or state transition testing.
Summary: 40 single-mark MCQs mixing K1, K2, and K3 questions.
Passing score
The pass mark is 65 percent, which equals 26 correct answers out of 40. Each question is worth exactly one point regardless of K-level.
Summary: 26 out of 40 is the minimum passing score.
Time extension policy
Candidates taking the exam in a language that is not their native language are entitled to an additional 25 percent of exam time, giving 75 minutes in total. A paper-based translation dictionary is also permitted in that scenario.
Summary: 75 minutes is granted for non-native language candidates.
Languages available
ISTQB publishes the syllabus in English. Member Boards translate and release the syllabus and exam in their national languages. Availability differs by region, so check your local Member Board before booking.
Summary: CTFL v4.0 is available in many languages through local Member Boards.
Delivery options
CTFL v4.0 can be taken at an approved physical test centre or by online proctored delivery, depending on the Exam Provider in your country. Identity checks, environment scans, and webcam monitoring apply to remote proctoring.
Summary: Both test centre and online proctored options exist, subject to your Exam Provider.
Retake policy
ISTQB does not publish a global retake limit on the central certification page. Retake rules and cooling-off periods are set by individual Exam Providers and Member Boards. Verify with your provider before booking a retake.
Summary: Retake conditions are set by the Exam Provider.
Cost
The CTFL v4.0 exam fee is not published on the central ISTQB certification page at the time of writing. Fees are set by individual Member Boards and Exam Providers and vary by country and delivery mode. Some regions bundle the exam with mandatory accredited training. Verify on your local Member Board page before booking.
Summary: Fees vary by region; check your local Member Board for the exact price.
Certificate validity and renewal
The CTFL v4.0 certificate has no expiry date and no recertification requirement. Holders of earlier CTFL versions also remain certified.
Summary: CTFL is a lifetime certification with no renewal cycle.
Syllabus breakdown, chapter by chapter
The v4.0 syllabus is structured into six examinable chapters. For accredited training, the syllabus requires a minimum of 1,135 minutes (18 hours and 55 minutes) of instruction, distributed as below. The syllabus covers 14 Business Outcomes and 64 Learning Objectives in total.
Chapter 1: Fundamentals of Testing
Suggested study time: 180 minutes.
This chapter establishes the vocabulary used throughout the syllabus: what testing is, why it is necessary, the seven testing principles, the high-level test process and its testware, the difference between testing and debugging, and the testing role itself. It also separates testing as quality control from quality assurance as a process activity.
These ideas underpin everyday QA work. When a defect is found in production, the team needs to separate the failure (the visible symptom), the defect (the fault in code or document), and the error (the human mistake behind it). Getting this language right is the difference between blaming a developer and running a useful root cause analysis.
Examinable mostly at K1 and K2. Expect questions that ask you to recall the seven principles or distinguish between testware items rather than design tests.
Chapter 2: Testing Throughout the Software Development Lifecycle
Suggested study time: 130 minutes.
Covers how testing fits sequential, iterative, and incremental SDLC models, plus test-first approaches (TDD, ATDD, BDD), DevOps, the shift-left approach, and retrospectives as a process improvement mechanism. It also defines the five test levels (component, component integration, system, system integration, acceptance) and the four test types (functional, non-functional, black-box, white-box), and contrasts confirmation testing with regression testing.
In practice this chapter is what lets a tester explain why running a single automated regression suite at the end of a sprint is not the same thing as shifting testing left. It also helps a hiring manager judge whether a candidate genuinely understands acceptance testing or is repeating a slogan.
Mostly K2, with a few K1 questions on test-level definitions and DevOps practices.
Chapter 3: Static Testing
Suggested study time: 80 minutes.
The shortest examinable chapter. Covers static testing basics, what static testing can find that dynamic testing cannot, the value of early reviews, the generic review process activities (planning, initiation, individual review, communication and analysis, fixing and reporting), the principal review roles, and the four common review types: informal review, walkthrough, technical review, and inspection.
This is the chapter most candidates underestimate. Static testing finds entire classes of defects, such as ambiguous requirements and unreachable code, that dynamic testing struggles with. Knowing the four review types and their formality also helps in real work, where teams routinely mislabel walkthroughs as inspections.
Mostly K1 and K2 questions. Expect to match a review type to a scenario.
Chapter 4: Test Analysis and Design
Suggested study time: 390 minutes.
The largest chapter, and the most heavily weighted in the exam. Covers black-box techniques (equivalence partitioning, boundary value analysis in 2-value and 3-value forms, decision tables, state transition testing), white-box techniques (statement and branch testing with their coverage measures), experience-based techniques (error guessing, exploratory testing, checklist-based testing), and collaboration-based approaches (user story writing, acceptance criteria formats, and ATDD).
This is where most real test design happens. A tester who can build a decision table from a plain-English business rule, or apply 3-value BVA to a range check, will find defects others miss. White-box coverage is also where many candidates lose marks if they confuse statement and branch coverage.
K3 (apply) questions concentrate here. Expect to derive test cases from a small specification or a state diagram under time pressure.
Chapter 5: Managing the Test Activities
Suggested study time: 335 minutes.
The second-largest chapter. Covers test planning and the test plan, entry and exit criteria, estimation, test case prioritisation, the test pyramid and testing quadrants, risk management (project vs product risk, product risk analysis and control), test monitoring and control, test metrics and reports, configuration management, and defect management including writing useful defect reports.
This chapter separates a tester who can run tests from a tester who can lead a release. Risk-based testing in particular is what most senior interviewers probe, and a candidate who can explain a risk register or sketch a test pyramid will stand out.
Mixes K1 and K2 with some K3 questions on estimation and prioritisation. Many candidates run out of time on this chapter because they spent it all on chapter 4 techniques.
Chapter 6: Test Tools
Suggested study time: 20 minutes.
The smallest chapter. Covers tool support for testing, classification of tool types, and the benefits and risks of test automation.
Short, but commonly tested. Expect one or two questions on the risks of automation, such as unrealistic expectations or under-estimating maintenance cost, or on the categories of test tools.
Mostly K1 and K2.
How to prepare for CTFL v4.0
Recommended study plans
The right plan depends on your starting point:
- 4 weeks (full-time tester with hands-on experience). Skim each chapter, drill chapters 4 and 5 with sample questions, then run two full timed sample exams.
- 8 weeks (part-time learner, some QA exposure). Two chapters per fortnight with active recall, then sample exams in the final two weeks.
- 12 weeks (career changer with no QA exposure). One chapter every two weeks with notes and applied exercises (for example, write a decision table from a real product feature), then two weeks of sample exams.
Aim to score 75 percent or higher on at least two full-length sample exams under timed conditions before booking the real exam. The 10-percent buffer over the pass mark absorbs the difficulty step between practice and the real paper.
Official materials
Use the official ISTQB® materials first. The syllabus PDF, the glossary, and the official sample exams are the only sources guaranteed to match the questions you will see. Links are in the Official downloads section below.
Self-study versus accredited training
Self-study works for disciplined learners who already know the basics of software development. ISTQB recommends accredited training because Member Boards review the course materials for syllabus coverage, and trainers can answer K3-style application questions in real time. Accredited training costs more but is a single defensible expense if your employer is paying. Self-study is cheaper but easier to under-prepare with.
Practice exams
The official ISTQB sample exams (multiple versions, with answer keys) are the highest-fidelity practice you can get. Many Member Boards publish additional sample exams on their own download pages. Avoid any provider advertising “real exam questions” or “100 percent pass guarantees”, as these are almost always exam dumps that violate ISTQB exam terms.
How to read the sample exam debrief
Do not just check the score. For each question you got wrong, record the syllabus chapter, the K-level, and the specific concept you missed. Patterns matter more than counts. If you keep failing K3 questions in chapter 4, your gap is technique application, not vocabulary.
Mistakes that cause people to fail
- Skimming chapter 5 because chapter 4 felt harder. Chapter 5 carries roughly the same number of questions.
- Memorising definitions without practising K3 application items on decision tables and state transition testing.
- Misreading qualifier words in the stem (best, most appropriate, least likely, EXCEPT).
- Practising untimed, then losing 10 minutes to nerves on the real paper.
- Confusing statement coverage and branch coverage.
How CTFL v4.0 compares with related certifications
| Item | ISTQB CTFL v4.0 | ISTQB Certified Tester Foundation Level Agile Tester (CTFL-AT) | ASTQB Foundation Level (US member board exam) |
|---|---|---|---|
| Issued by | ISTQB (global) | ISTQB (global) | ASTQB, the United States ISTQB Member Board |
| Prerequisite | None | Active CTFL certificate | None |
| Exam length | 60 minutes | Verify on CTFL-AT page | 60 minutes |
| Audience | Anyone involved in testing | Testers already operating in Agile teams | Same audience as CTFL, with US delivery |
| What it certifies | Core testing knowledge across all SDLCs | Specific Agile testing skills on top of CTFL | The same CTFL syllabus, administered in the US |
CTFL v4.0 is the prerequisite or recommended starting point for almost every ISTQB pathway. The Agile Tester extension requires you to hold CTFL first. ASTQB is not a separate certification; it is the US Member Board that delivers the same CTFL syllabus.
Career impact and recognition
ISTQB certifications appear in job listings for QA Engineer, Test Analyst, Test Lead, SDET, and QA Manager roles on LinkedIn, Indeed, and similar platforms. CTFL is usually listed as “preferred” rather than required, which means it helps your CV pass an initial screen rather than directly raising your salary.
ISTQB does not publish official pass rates or salary data, and most “ISTQB salary statistics” online are not sourced from ISTQB. Treat such claims with caution. The honest framing is that CTFL signals a shared baseline of vocabulary and process awareness, most valuable when you are entering a new team, switching industries, or competing with candidates who are otherwise similar to you.
Official downloads and resources
- Official CTFL v4.0 certification page on istqb.org: see ISTQB Certifications, Certified Tester Foundation Level (CTFL) v4.0
- ISTQB CTFL Syllabus v4.0.1 (PDF) on istqb.org
- ISTQB Glossary on istqb.org
- Official CTFL sample exams (multiple versions, available via ISTQB and ISTQB Member Board download pages)
- ISTQB Accredited Training Provider directory on istqb.org
Frequently asked questions
Is CTFL v4.0 worth it in 2026?
For most QA and adjacent roles, yes, as long as you treat it as a baseline credential rather than a career-defining one. It establishes a shared vocabulary recognised globally, costs less than most other industry certifications, does not expire, and is a prerequisite for further ISTQB qualifications. It will not on its own get you a senior role.
How hard is the CTFL v4.0 exam?
Moderate. The exam is 40 questions in 60 minutes with a 65 percent pass mark. The hardest items are K3 application questions in chapters 4 and 5, especially equivalence partitioning, boundary value analysis, decision tables, and state transition testing. Most candidates who take at least two timed sample exams and score above 75 percent pass on the first attempt.
How much does the CTFL v4.0 exam cost?
The fee is not published on the central ISTQB certification page. Each ISTQB Member Board and Exam Provider sets its own price, and fees vary by country and delivery mode. Check your local Member Board’s website or an approved Exam Provider before booking. Some providers bundle the exam fee inside accredited training.
How long does it take to prepare for CTFL v4.0?
Most candidates need 4 to 12 weeks of part-time study. Working testers often need 4 to 6 weeks, while career changers with no QA exposure usually need 10 to 12 weeks. The accredited training course alone requires a minimum of 1,135 minutes of instruction (about 19 hours), and most candidates double that with self-study and sample exams.
Does CTFL v4.0 expire?
No. CTFL is a lifetime certification with no renewal cycle. Holders of earlier CTFL versions remain certified and are not required to re-take the v4.0 exam, although ISTQB notes they may choose to do so to evidence the updated competencies.
Can I take CTFL v4.0 online?
Yes, in most regions. Online proctored delivery is offered by many ISTQB Exam Providers, alongside traditional test centres. Availability and pricing depend on your local Member Board and Exam Provider. Online proctoring involves webcam monitoring, an environment scan, and government-issued ID verification.
What is the pass rate for CTFL v4.0?
ISTQB does not publish official pass rates for CTFL v4.0. Any pass-rate figure quoted by a training provider or content site is their own estimate, not an ISTQB number. The most reliable proxy is your own performance on official sample exams under timed, closed-book conditions.
What is the difference between CTFL v4.0 and CTFL-AT?
CTFL v4.0 is the broad Foundation Level certificate covering testing across all software development lifecycles. CTFL-AT (Certified Tester Foundation Level Agile Tester) is a separate certification focused specifically on testing inside Agile teams, and it requires you to already hold a valid CTFL certificate. Most candidates take CTFL first, then CTFL-AT if they work primarily in Agile environments.
Which book is best for CTFL v4.0?
There are study guides aligned with the 2023 syllabus, but editions change frequently. Before buying any book, confirm that it explicitly covers CTFL v4.0 (released April 2023) and not an earlier version such as v3.1. The safer baseline is the official ISTQB syllabus PDF and glossary plus the official sample exams. Treat textbooks as supplements, not replacements.
Do employers recognise CTFL v4.0?
Yes, broadly. ISTQB is the largest software testing certification scheme worldwide, and CTFL is referenced in QA job listings across most industries and geographies. Recognition is strongest in Europe, India, the United Kingdom, and the Middle East, and is common but not universal in North America. Employers typically treat CTFL as a “nice to have” filter rather than a salary multiplier.
Key takeaways
- ISTQB CTFL v4.0 is the foundational software testing certification in the ISTQB Core stream, released on 21 April 2023.
- The exam has 40 multiple-choice questions, 60 minutes, and a 65 percent pass mark (26 out of 40).
- Non-native language candidates receive 75 minutes (an additional 25 percent).
- The syllabus has six chapters, 14 Business Outcomes, and 64 Learning Objectives, with chapters 4 and 5 carrying the largest share of exam questions.
- CTFL has no prerequisites, no expiry, and no recertification cycle.
- CTFL v3.1 was sunset for English exams on 9 May 2024.
- Fees are set by individual ISTQB Member Boards and Exam Providers, not centrally by ISTQB.
Next steps
If CTFL v4.0 is the right certification for you: download the official syllabus v4.0.1 and the latest sample exams from istqb.org, identify your country’s ISTQB Member Board to confirm fees and language availability, and book your exam through an accredited Exam Provider. If you prefer instructor-led learning, use the ISTQB Accredited Training Provider directory rather than a generic search.
Last reviewed and fact-check note
Last reviewed on 2026-05-21 against https://istqb.org/certifications/certified-tester-foundation-level-ctfl-v4-0/ and the ISTQB CTFL Syllabus v4.0.1.
Disclaimer
istqb.com is an independent educational resource. ISTQB®, CTFL®, and related marks are registered trademarks of the International Software Testing Qualifications Board. This article summarises publicly available information and is not an official ISTQB publication. Always verify exam details on istqb.org before booking.