diff --git a/.gitignore b/.gitignore
index 86fde0f..a157914 100644
--- a/.gitignore
+++ b/.gitignore
@@ -95,9 +95,29 @@ temp/
 ehthumbs.db
 Thumbs.db
 
-# Data files (optional - remove if you want to include sample data)
+# Data files - NEVER commit sensitive business data
 *.csv
+*.xlsx
+*.xls
 *.pdf
+*.json
+!package.json
+!package-lock.json
+!tsconfig*.json
+!tailwind.config.js
+!vite.config.ts
+!postcss.config.js
+
+# Business documents and statements
+*statement*
+*Statement*
+*transaction*
+*Transaction*
+*business*
+*Business*
+*tracker*
+*Tracker*
+LayerXLayer*
 
 # Local development files
 .vscode/settings.json
\ No newline at end of file
diff --git a/LayerXLayer_Business_Tracker.xlsx b/LayerXLayer_Business_Tracker.xlsx
deleted file mode 100644
index d76a0e7..0000000
Binary files a/LayerXLayer_Business_Tracker.xlsx and /dev/null differ