diff --git a/beetsplug/smartplaylist.py b/beetsplug/smartplaylist.py
index e22a65787..43f957432 100644
--- a/beetsplug/smartplaylist.py
+++ b/beetsplug/smartplaylist.py
@@ -267,7 +267,7 @@ class SmartPlaylistPlugin(BeetsPlugin):
         tpl = self.config["uri_format"].get()
         prefix = bytestring_path(self.config["prefix"].as_str())
         relative_to = self.config["relative_to"].get()
-        if relative_to:
+        if relative_to != "m3u":
             relative_to = normpath(relative_to)
 
         # Maps playlist filenames to lists of track filenames.
@@ -316,6 +316,8 @@ class SmartPlaylistPlugin(BeetsPlugin):
                 item_uri = item.path
                 if tpl:
                     item_uri = tpl.replace("$id", str(item.id)).encode("utf-8")
+                if relative_to == "m3u":
+                    item_uri = "m3u"
                 else:
                     if relative_to:
                         item_uri = os.path.relpath(item_uri, relative_to)
@@ -354,6 +356,17 @@ class SmartPlaylistPlugin(BeetsPlugin):
                         f.write(b"#EXTM3U\n")
                     for entry in m3us[m3u]:
                         item = entry.item
+                        if entry.uri == "m3u":
+                            entry.uri = os.path.relpath(
+                                item.path, os.path.dirname(m3u_path)
+                            )
+                            if self.config["forward_slash"].get():
+                                entry.uri = path_as_posix(entry.uri)
+                            if self.config["urlencode"]:
+                                entry.uri = bytestring_path(
+                                    pathname2url(entry.uri)
+                                )
+                            entry.uri = prefix + entry.uri
                         comment = ""
                         if extm3u:
                             attr = [(k, entry.item[k]) for k in keys]
diff --git a/docs/changelog.rst b/docs/changelog.rst
index 25a0c1365..b3a77f07f 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -552,6 +552,7 @@ New features:
   from the match. It is thus possible to create more general rules, applying to
   many different artists at once.
 
+* Ability to use relative_to as "m3u" to set playlist files as relative to where each playlist is at, including subdirectories.
 Bug fixes:
 
 - Check if running python from the Microsoft Store and provide feedback to