diff --git a/pinaxcon/templatetags/lca2018_tags.py b/pinaxcon/templatetags/lca2018_tags.py
index c2e27d99442de7b60ea791fe0972e71721c67688..e6effd5ff2ead157e5e2c998bfa0021747e5d757 100644
--- a/pinaxcon/templatetags/lca2018_tags.py
+++ b/pinaxcon/templatetags/lca2018_tags.py
@@ -10,6 +10,7 @@ from symposion.conference import models as conference_models
 from symposion.schedule.models import Track
 
 CONFERENCE_ID = settings.CONFERENCE_ID
+GST_RATE = settings.GST_RATE
 
 register = template.Library()
 
@@ -71,7 +72,6 @@ def presentation_bg_number(presentation, count):
 
 @register.filter()
 def gst(amount):
-    GST_RATE = Decimal('0.15')
     value_no_gst = Decimal(amount / (1 + GST_RATE))
     return Decimal(amount - value_no_gst).quantize(Decimal('0.01'))
 
@@ -80,6 +80,7 @@ def gst(amount):
 def conference_name():
     return conference_models.Conference.objects.get(id=CONFERENCE_ID).title
 
+
 @register.filter()
 def day_has_tracks(timetable, day):
     try:
@@ -89,6 +90,7 @@ def day_has_tracks(timetable, day):
         has_tracks = False
     return len(track_names)
 
+
 @register.filter()
 def trackname(room, day):
     try:
@@ -97,6 +99,7 @@ def trackname(room, day):
         track_name = None
     return track_name
 
+
 @register.simple_tag(takes_context=True)
 def ticket_type(context):