diff --git a/Makefile b/Makefile
index 1403a2a..6530353 100644
--- a/Makefile
+++ b/Makefile
@@ -110,6 +110,8 @@ test-billing: ## Run the billing-tagged tests (skipped by plain `go test ./...`)
 test-race: ## Run tests with race detector
 	@echo "→ Running tests with race detector..."
 	go test -race ./...
+	@echo "→ Running billing-tagged tests with race detector..."
+	go test -race -tags billing ./pkg/billing/...
 
 test-verbose: ## Run tests with verbose output
 	@echo "→ Running tests with verbose output..."