How Much Code Coverage Is “Good Enough”?

[Sophie Lane]

When teams talk about improving test quality, code coverage often comes up as a benchmark. But one question keeps popping up: how much coverage is actually “good enough”?

While aiming for 100% coverage might sound ideal, it’s not always realistic — or even necessary. Coverage simply tells you which lines of code are executed during testing, not whether your tests validate the right behavior. In fact, you could have high coverage but still miss critical bugs if the tests aren’t meaningful.

From experience, most teams settle around 70–85% as a healthy balance. The key is to combine coverage metrics with other quality practices:

Focus on critical paths (e.g., payment flows, authentication).

Use mutation testing to measure test strength, not just execution.

Don’t chase numbers blindly — context matters more than the metric itself.

Some modern tools also integrate [url=https://keploy.io/blog/community/understanding-code-coverage-in-software-testing]code coverage[/url] insights into CI pipelines, flagging risky areas with low code coverage. This helps teams prioritize where to add meaningful tests without slowing delivery.

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