Chapter 4 – Test Analysis & Design
Decision Coverage – ISTQB Definition
Last Updated: July 12, 2026 · SoftwareTestPilot QA Team
Official ISTQB Definition
The percentage of decision outcomes that have been exercised by a test suite.
In simple words
Percent of decision outcomes (true/false) hit by your tests.
Exam tip
For simple decisions, decision coverage == branch coverage.
Related terms
- Decision TestingDesign tests so each decision point (if / switch) is exercised for every possible outcome.
- Branch CoverageExecuted branches ÷ total branches × 100 — covers both true and false outcomes of each decision.
- Condition CoveragePercent of individual boolean sub-conditions that have been evaluated true and false.
Practice this term in the ISTQB Mock Test
40 CTFL v4.0 questions, 60-minute timer, instant scoring and chapter-wise breakdown.
Practice in Mock Test