diff --git a/.changeset/weak-avocados-lay.md b/.changeset/weak-avocados-lay.md
new file mode 100644
index 0000000..625bf20
--- /dev/null
+++ b/.changeset/weak-avocados-lay.md
@@ -0,0 +1,5 @@
+---
+'@emigrate/plugin-tools': patch
+---
+
+Remove double and trailing underscores in sanitized filenames and lower case the result for consistent filenames
diff --git a/packages/plugin-tools/src/index.ts b/packages/plugin-tools/src/index.ts
index bd296cf..0757898 100644
--- a/packages/plugin-tools/src/index.ts
+++ b/packages/plugin-tools/src/index.ts
@@ -53,4 +53,9 @@ export const getTimestampPrefix = () => new Date().toISOString().replaceAll(/[-:
  * @param name A migration name to sanitize
  * @returns A sanitized migration name that can be used as a filename
  */
-export const sanitizeMigrationName = (name: string) => name.replaceAll(/[\W/\\:|*?'"<>]/g, '_').trim();
+export const sanitizeMigrationName = (name: string) =>
+  name
+    .replaceAll(/[\W/\\:|*?'"<>]+/g, '_')
+    .trim()
+    .replace(/_$/, '')
+    .toLocaleLowerCase();