diff --git a/README.md b/README.md
index 612ff88..f4ab110 100644
--- a/README.md
+++ b/README.md
@@ -80,6 +80,8 @@ spotify vol up                     Increases the volume by 10%.
 spotify vol down                   Decreases the volume by 10%.
 spotify vol <amount>               Sets the volume to an amount between 0 and 100.
 spotify vol [show]                 Shows the current volume.
+spotify vol inc                    Shows the current volume increment value.
+spotify vol inc <amount>           Sets the volume incrementer to an amount between 0 and 100.
 
 spotify status                     Shows the play status, including the current song details.
 spotify status artist              Shows the currently playing artist.
diff --git a/spotify b/spotify
index f437170..daf67a8 100755
--- a/spotify
+++ b/spotify
@@ -26,7 +26,7 @@
 # CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
-USER_CONFIG_DEFAULTS="CLIENT_ID=\"\"\nCLIENT_SECRET=\"\"";
+USER_CONFIG_DEFAULTS="CLIENT_ID=\"\"\nCLIENT_SECRET=\"\"\nVOL_INCREMENT=10";
 USER_CONFIG_FILE="${HOME}/.shpotify.cfg";
 if ! [[ -f "${USER_CONFIG_FILE}" ]]; then
     touch "${USER_CONFIG_FILE}";
@@ -35,7 +35,7 @@ fi
 source "${USER_CONFIG_FILE}";
 
 # Set the percent change in volume for vol up and vol down
-VOL_INCREMENT=10
+VOL_INCREMENT=${VOL_INCREMENT};
 
 showAPIHelp() {
     echo;
@@ -78,10 +78,12 @@ showHelp () {
     echo "  stop                         # Stops playback.";
     echo "  quit                         # Stops playback and quits Spotify.";
     echo;
-    echo "  vol up                       # Increases the volume by 10%.";
-    echo "  vol down                     # Decreases the volume by 10%.";
+    echo "  vol up                       # Increases the volume by $VOL_INCREMENT%.";
+    echo "  vol down                     # Decreases the volume by $VOL_INCREMENT%.";
     echo "  vol <amount>                 # Sets the volume to an amount between 0 and 100.";
     echo "  vol [show]                   # Shows the current Spotify volume.";
+    echo "  vol inc                      # Shows the current volume increment value.";
+    echo "  vol inc <amount>             # Sets the volume incrementer to an amount between 0 and 100.";
     echo;
     echo "  status                       # Shows the current player status.";
     echo "  status artist                # Shows the currently playing artist.";
@@ -330,6 +332,17 @@ while [ $# -gt 0 ]; do
             break ;;
 
         "vol"    )
+            if [[ $2 = "inc" ]]; then
+            elif ; then
+                if [[ $# -gt 2 ]] && [[ $3 =~ ^[0-9]+$ ]] && [[ $3 -ge 0 && $3 -le 100 ]]; then
+                    VOL_INCREMENT=$3;
+                    echo "CLIENT_ID=${CLIENT_ID}" > $USER_CONFIG_FILE
+                    echo "CLIENT_SECRET=${CLIENT_SECRET}" >> $USER_CONFIG_FILE
+                    echo "VOL_INCREMENT=$3" >> $USER_CONFIG_FILE
+                fi
+                echo "Up/Down commands change volume by $VOL_INCREMENT%";
+                break ;
+            fi
             vol=`osascript -e 'tell application "Spotify" to sound volume as integer'`;
             if [[ $2 = "" || $2 = "show" ]]; then
                 cecho "Current Spotify volume level is $vol.";
@@ -358,12 +371,14 @@ while [ $# -gt 0 ]; do
                 echo "The 'vol' command should be used as follows:"
                 echo "  vol up                       # Increases the volume by $VOL_INCREMENT%.";
                 echo "  vol down                     # Decreases the volume by $VOL_INCREMENT%.";
-                echo "  vol [amount]                 # Sets the volume to an amount between 0 and 100.";
-                echo "  vol                          # Shows the current Spotify volume.";
+                echo "  vol <amount>                 # Sets the volume to an amount between 0 and 100.";
+                echo "  vol [show]                   # Shows the current Spotify volume.";
+                echo "  vol inc                      # Shows the current volume increment value.";
+                echo "  vol inc <amount>             # Sets the volume incrementer to an amount between 0 and 100.";
                 exit 1;
             fi
 
-            osascript -e "tell application \"Spotify\" to set sound volume to $newvol";
+            osascript -e "tell application \"Spotify\" to set sound volume to $(( newvol+1 ))";
             break ;;
 
         "toggle"  )