diff --git a/.coveragerc b/.coveragerc
new file mode 100644
index 0000000000..dc36ebc35d
--- /dev/null
+++ b/.coveragerc
@@ -0,0 +1,28 @@
+[run]
+branch = True
+relative_files = True
+omit =
+    */tests/*
+    */tests.py
+    */test/*
+    */test.py
+    */venv/*
+    */.venv/*
+    */.tox/*
+    */build/*
+    */dist/*
+    */__pycache__/*
+
+[report]
+show_missing = True
+skip_covered = False
+precision = 2
+exclude_lines =
+    pragma: no cover
+    if __name__ == "__main__":
+    if TYPE_CHECKING:
+    raise NotImplementedError
+
+[html]
+directory = build/coverage/html
+title = CodeChecker test coverage
diff --git a/.gitignore b/.gitignore
index b59c2b93c7..2f4aa4c92e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,6 +6,7 @@ build
 build_dist
 venv
 venv_dev
+.coverage
 Makefile.local
 
 /web/server/vue-cli/dist
diff --git a/analyzer/tests/Makefile b/analyzer/tests/Makefile
index 88e85bf67e..8f10be6cb8 100644
--- a/analyzer/tests/Makefile
+++ b/analyzer/tests/Makefile
@@ -54,7 +54,14 @@ run_test_in_env: venv_dev is_TEST_set
 		pytest $(PYTESTCFG) ${TEST} || exit 1
 
 UNIT_TEST_CMD = $(REPO_ROOT) pytest $(PYTESTCFG) tests/unit
-UNIT_TEST_COV_CMD = $(REPO_ROOT) coverage run -m pytest $(PYTESTCFG) tests/unit && coverage report && coverage html
+COVERAGE_CMD = $(REPO_ROOT) $(PYTHON_BIN) -m coverage
+COVERAGE_RCFILE = --rcfile=$(ROOT)/.coveragerc
+ANALYZER_COVERAGE_SOURCE = codechecker_analyzer,codechecker_common
+UNIT_TEST_COV_CMD = mkdir -p build/coverage && \
+	$(COVERAGE_CMD) erase $(COVERAGE_RCFILE) && \
+	$(COVERAGE_CMD) run $(COVERAGE_RCFILE) --source=$(ANALYZER_COVERAGE_SOURCE) -m pytest $(PYTESTCFG) tests/unit && \
+	$(COVERAGE_CMD) report $(COVERAGE_RCFILE) && \
+	$(COVERAGE_CMD) html $(COVERAGE_RCFILE)
 
 test_unit:
 	$(UNIT_TEST_CMD)
diff --git a/web/client/tests/Makefile b/web/client/tests/Makefile
index 9fceab69b8..c899f2eff0 100644
--- a/web/client/tests/Makefile
+++ b/web/client/tests/Makefile
@@ -1,5 +1,12 @@
 CLIENT_UNIT_TEST_CMD = $(REPO_ROOT) BUILD_DIR=$(BUILD_DIR) pytest $(PYTESTCFG) client client/tests/unit
-CLIENT_UNIT_TEST_COV_CMD = $(REPO_ROOT) BUILD_DIR=$(BUILD_DIR) coverage run -m pytest $(PYTESTCFG) client client/tests/unit && coverage report && coverage html
+CLIENT_COVERAGE_CMD = $(REPO_ROOT) $(PYTHON_BIN) -m coverage
+CLIENT_COVERAGE_RCFILE = --rcfile=$(ROOT)/.coveragerc
+CLIENT_COVERAGE_SOURCE = codechecker_client,codechecker_web,codechecker_common
+CLIENT_UNIT_TEST_COV_CMD = mkdir -p build/coverage && \
+	$(CLIENT_COVERAGE_CMD) erase $(CLIENT_COVERAGE_RCFILE) && \
+	$(CLIENT_COVERAGE_CMD) run $(CLIENT_COVERAGE_RCFILE) --source=$(CLIENT_COVERAGE_SOURCE) -m pytest $(PYTESTCFG) client client/tests/unit && \
+	$(CLIENT_COVERAGE_CMD) report $(CLIENT_COVERAGE_RCFILE) && \
+	$(CLIENT_COVERAGE_CMD) html $(CLIENT_COVERAGE_RCFILE)
 
 
 test_unit_client:
diff --git a/web/server/tests/Makefile b/web/server/tests/Makefile
index e048aa400f..23c9801999 100644
--- a/web/server/tests/Makefile
+++ b/web/server/tests/Makefile
@@ -1,5 +1,12 @@
 SERVER_UNIT_TEST_CMD = $(REPO_ROOT) BUILD_DIR=$(BUILD_DIR) pytest $(PYTESTCFG) server server/tests/unit
-SERVER_UNIT_TEST_COV_CMD = $(REPO_ROOT) BUILD_DIR=$(BUILD_DIR) coverage run -m pytest $(PYTESTCFG) server server/tests/unit && coverage report && coverage html
+SERVER_COVERAGE_CMD = $(REPO_ROOT) $(PYTHON_BIN) -m coverage
+SERVER_COVERAGE_RCFILE = --rcfile=$(ROOT)/.coveragerc
+SERVER_COVERAGE_SOURCE = codechecker_server,codechecker_web,codechecker_common
+SERVER_UNIT_TEST_COV_CMD = mkdir -p build/coverage && \
+	$(SERVER_COVERAGE_CMD) erase $(SERVER_COVERAGE_RCFILE) && \
+	$(SERVER_COVERAGE_CMD) run $(SERVER_COVERAGE_RCFILE) --source=$(SERVER_COVERAGE_SOURCE) -m pytest $(PYTESTCFG) server server/tests/unit && \
+	$(SERVER_COVERAGE_CMD) report $(SERVER_COVERAGE_RCFILE) && \
+	$(SERVER_COVERAGE_CMD) html $(SERVER_COVERAGE_RCFILE)
 
 test_unit_server:
 	$(SERVER_UNIT_TEST_CMD)