From 6aa1109eeac8410481e24ff99a63f8735cb0463a Mon Sep 17 00:00:00 2001
From: Andrew Williams <andy@tensixtyone.com>
Date: Mon, 4 Jun 2012 17:47:27 +0100
Subject: [PATCH] Fix error if a corp has 0% tax rate.

---
 pacmanager/core/models.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/pacmanager/core/models.py b/pacmanager/core/models.py
index 818a1f7..5952299 100644
--- a/pacmanager/core/models.py
+++ b/pacmanager/core/models.py
@@ -66,7 +66,10 @@ class MonthTotal(models.Model):
         if self.corporation.fixed_value is not None:
             return self.corporation.fixed_value
         threshold = Decimal(managerconf.get('pac.tax_threshold', '200000000'))
-        calc = (self.tax / self.corporation.tax_rate) * int(managerconf.get('pac.tax_rate', '10'))
+        if self.corporation.tax_rate == 0:
+            calc = 0
+        else:
+            calc = (self.tax / self.corporation.tax_rate) * int(managerconf.get('pac.tax_rate', '10'))
         if calc > threshold: return round(calc, 2)
         return threshold