diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..50c6e15
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "tax_api"]
+	path = tax_api
+	url = https://github.com/mechjook/DemostrationTaxAPI.git