diff --git a/app/models/order_balance.rb b/app/models/order_balance.rb
index 1e09940808..4940bf18c9 100644
--- a/app/models/order_balance.rb
+++ b/app/models/order_balance.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class OrderBalance
-  delegate :zero?, :abs, :to_s, :to_f, :to_d, :<, :>, to: :amount
+  delegate :negative?, :positive?, :zero?, :abs, :to_s, :to_f, :to_d, :<, :>, to: :amount
 
   def initialize(order)
     @order = order
diff --git a/app/views/spree/orders/_totals_footer.html.haml b/app/views/spree/orders/_totals_footer.html.haml
index 8cdb778fec..7319869eb9 100644
--- a/app/views/spree/orders/_totals_footer.html.haml
+++ b/app/views/spree/orders/_totals_footer.html.haml
@@ -32,7 +32,7 @@
       %td.text-right.total
         %strong
           = order.display_payment_total.to_html
-  - if order.outstanding_balance? && order.outstanding_balance > 0
+  - if order.outstanding_balance.positive?
     %tr.total
       %td.text-right{colspan: "3"}
         %h5.not-paid
@@ -40,7 +40,7 @@
       %td.text-right.total.not-paid
         %h5.not-paid
           = order.display_outstanding_balance.to_html
-  - else
+  - if order.outstanding_balance.negative?
     %tr.total
       %td.text-right{colspan: "3"}
         %h5
@@ -49,7 +49,7 @@
         %h5
           = order.display_outstanding_balance.to_html
 
-  - if order.total_tax > 0
+  - if order.total_tax.positive?
     #tax
       %tr#tax-row.total
         %td.text-right{colspan: "3"}