diff --git a/02/x/4 - Payment Calculator.py b/02/x/4 - Payment Calculator.py
new file mode 100644
index 0000000..6e10e3f
--- /dev/null
+++ b/02/x/4 - Payment Calculator.py	
@@ -0,0 +1 @@
+print(min(max(10, balance*0.021), balance))