From fe86e0cbfe5fbd659dbe916d134a3f4a1ea1b76c 2018-09-30 21:11:36
From: Tobias <tobias@localhost.localdomain>
Date: 2018-09-30 21:11:36
Subject: [PATCH] Update GST tag

---

diff --git a/pinaxcon/templatetags/lca2018_tags.py b/pinaxcon/templatetags/lca2018_tags.py
index 8620bc10314e8799cb5e75a2d5ca0a1f6d08c39f..be27e8ed2340d6700951039e353b83a8386afff4 100644
--- a/pinaxcon/templatetags/lca2018_tags.py
+++ b/pinaxcon/templatetags/lca2018_tags.py
@@ -71,8 +71,9 @@ def presentation_bg_number(presentation, count):
 
 @register.filter()
 def gst(amount):
-    two_places = Decimal(10) ** -2
-    return Decimal(amount / 11).quantize(two_places)
+    GST_RATE = Decimal('0.15')
+    value_no_gst = Decimal(amount / (1 + GST_RATE))
+    return Decimal(amount - value_no_gst).quantize(Decimal('0.01'))
 
 
 @register.simple_tag()