diff --git a/app/models/form/sales/questions/grant.rb b/app/models/form/sales/questions/grant.rb
index 181e2281d..beef93c58 100644
--- a/app/models/form/sales/questions/grant.rb
+++ b/app/models/form/sales/questions/grant.rb
@@ -6,6 +6,7 @@ class Form::Sales::Questions::Grant < ::Form::Question
     @header = "What was the amount of any loan, grant, discount or subsidy given?"
     @type = "numeric"
     @min = 0
+    @max = 999_999
     @width = 5
     @prefix = "£"
     @hint_text = "For all schemes except Right to Buy (RTB), Preserved Right to Buy (PRTB), Voluntary Right to Buy (VRTB)"