diff --git a/erpnext/accounts/doctype/subscriptions/subscriptions.py b/erpnext/accounts/doctype/subscriptions/subscriptions.py
index 7796daa..15e4611 100644
--- a/erpnext/accounts/doctype/subscriptions/subscriptions.py
+++ b/erpnext/accounts/doctype/subscriptions/subscriptions.py
@@ -7,7 +7,7 @@
 import frappe
 from frappe import _
 from frappe.model.document import Document
-from frappe.utils.data import nowdate, getdate, cint, add_days, date_diff, get_last_day, add_to_date
+from frappe.utils.data import nowdate, getdate, cint, add_days, date_diff, get_last_day, add_to_date, flt
 
 
 class Subscriptions(Document):
@@ -304,7 +304,7 @@
 			)
 
 		elif plan_items:
-			prorate_factor = get_prorata_factor(self.current_invoice_end, self.current_invoice_start)
+			prorate_factor = self.get_prorata_factor(self.current_invoice_end, self.current_invoice_start)
 
 			item_names = frappe.db.sql(
 				'select item as item_code, cost * %s as rate from `tabSubscription Plan` where name in %s',
@@ -420,6 +420,18 @@
 		else:
 			frappe.throw(_('You cannot restart a Subscription that is not cancelled.'))
 
+	def get_prorata_factor(self, period_end, period_start):
+		diff = flt(date_diff(nowdate(), period_start) + 1)
+		plan_days = flt(date_diff(period_end, period_start) + 1)
+		prorate_factor = diff / plan_days
+
+		return prorate_factor
+
+	def get_precision(self):
+		invoice = self.get_current_invoice()
+		if invoice:
+			return invoice.precision('grand_total')
+
 
 def process_all():
 	"""
@@ -456,14 +468,6 @@
 			frappe.db.commit()
 
 
-def get_prorata_factor(period_end, period_start):
-	diff = date_diff(nowdate(), period_start) + 1
-	plan_days = date_diff(period_end, period_start) + 1
-	prorate_factor = diff/plan_days
-
-	return prorate_factor
-
-
 @frappe.whitelist()
 def cancel_subscription(name):
 	"""
diff --git a/erpnext/accounts/doctype/subscriptions/test_subscriptions.py b/erpnext/accounts/doctype/subscriptions/test_subscriptions.py
index 4452e63..fb92d86 100644
--- a/erpnext/accounts/doctype/subscriptions/test_subscriptions.py
+++ b/erpnext/accounts/doctype/subscriptions/test_subscriptions.py
@@ -6,8 +6,7 @@
 import unittest
 
 import frappe
-from erpnext.accounts.doctype.subscriptions.subscriptions import get_prorata_factor
-from frappe.utils.data import nowdate, add_days, add_to_date, add_months, date_diff
+from frappe.utils.data import nowdate, add_days, add_to_date, add_months, date_diff, flt
 
 
 def create_plan():
@@ -275,6 +274,11 @@
 		subscription.delete()
 
 	def test_subscription_cancellation_invoices(self):
+		settings = frappe.get_single('Subscription Settings')
+		to_prorate = settings.prorate
+		settings.prorate = 1
+		settings.save()
+
 		subscription = frappe.new_doc('Subscriptions')
 		subscription.subscriber = '_Test Customer'
 		subscription.append('plans', {'plan': '_Test Plan Name'})
@@ -287,18 +291,22 @@
 		self.assertEqual(len(subscription.invoices), 1)
 
 		invoice = subscription.get_current_invoice()
-		diff = date_diff(nowdate(), subscription.current_invoice_start) + 1
-		plan_days = date_diff(subscription.current_invoice_end, subscription.current_invoice_start) + 1
-		prorate_factor = diff/plan_days
+		diff = flt(date_diff(nowdate(), subscription.current_invoice_start) + 1)
+		plan_days = flt(date_diff(subscription.current_invoice_end, subscription.current_invoice_start) + 1)
+		prorate_factor = flt(diff/plan_days)
 
 		self.assertEqual(
-			get_prorata_factor(subscription.current_invoice_end, subscription.current_invoice_start),
-			prorate_factor
+			flt(
+				subscription.get_prorata_factor(subscription.current_invoice_end, subscription.current_invoice_start),
+				2),
+			flt(prorate_factor, 2)
 		)
-		self.assertEqual(invoice.grand_total, prorate_factor * 900)
+		self.assertEqual(flt(invoice.grand_total, 2), flt(prorate_factor * 900, 2))
 		self.assertEqual(subscription.status, 'Canceled')
 
 		subscription.delete()
+		settings.prorate = to_prorate
+		settings.save()
 
 	def test_subscription_cancellation_invoices_with_prorata_false(self):
 		settings = frappe.get_single('Subscription Settings')
@@ -333,11 +341,11 @@
 		subscription.cancel_subscription()
 
 		invoice = subscription.get_current_invoice()
-		diff = date_diff(nowdate(), subscription.current_invoice_start) + 1
-		plan_days = date_diff(subscription.current_invoice_end, subscription.current_invoice_start) + 1
-		prorate_factor = diff/plan_days
+		diff = flt(date_diff(nowdate(), subscription.current_invoice_start) + 1)
+		plan_days = flt(date_diff(subscription.current_invoice_end, subscription.current_invoice_start) + 1)
+		prorate_factor = flt(diff / plan_days)
 
-		self.assertEqual(invoice.grand_total, prorate_factor * 900)
+		self.assertEqual(flt(invoice.grand_total, 2), flt(prorate_factor * 900, 2))
 
 		settings.prorate = to_prorate
 		settings.save()