diff --git a/erpnext/accounts/doctype/subscription/subscription.py b/erpnext/accounts/doctype/subscription/subscription.py
index 8c4d21ac3fb..623073c7e45 100644
--- a/erpnext/accounts/doctype/subscription/subscription.py
+++ b/erpnext/accounts/doctype/subscription/subscription.py
@@ -483,18 +483,23 @@ class Subscription(Document):
 
 		return invoice
 
-	def get_items_from_plans(self, plans: list[dict[str, str]], prorate: bool | None = None) -> list[dict]:
+	def get_items_from_plans(self, plans: list[dict[str, str]], prorate: int = 0) -> list[dict]:
 		"""
 		Returns the `Item`s linked to `Subscription Plan`
 		"""
-		if prorate is None:
-			prorate = False
 
+		prorate_factor = 1
 		if prorate:
 			prorate_factor = get_prorata_factor(
 				self.current_invoice_end,
 				self.current_invoice_start,
-				cint(self.generate_invoice_at == "Beginning of the current subscription period"),
+				cint(
+					self.generate_invoice_at
+					in [
+						"Beginning of the current subscription period",
+						"Days before the current subscription period",
+					]
+				),
 			)
 
 		items = []
@@ -511,33 +516,19 @@ class Subscription(Document):
 
 			deferred = frappe.db.get_value("Item", item_code, deferred_field)
 
-			if not prorate:
-				item = {
-					"item_code": item_code,
-					"qty": plan.qty,
-					"rate": get_plan_rate(
-						plan.plan,
-						plan.qty,
-						party,
-						self.current_invoice_start,
-						self.current_invoice_end,
-					),
-					"cost_center": plan_doc.cost_center,
-				}
-			else:
-				item = {
-					"item_code": item_code,
-					"qty": plan.qty,
-					"rate": get_plan_rate(
-						plan.plan,
-						plan.qty,
-						party,
-						self.current_invoice_start,
-						self.current_invoice_end,
-						prorate_factor,
-					),
-					"cost_center": plan_doc.cost_center,
-				}
+			item = {
+				"item_code": item_code,
+				"qty": plan.qty,
+				"rate": get_plan_rate(
+					plan.plan,
+					plan.qty,
+					party,
+					self.current_invoice_start,
+					self.current_invoice_end,
+					prorate_factor,
+				),
+				"cost_center": plan_doc.cost_center,
+			}
 
 			if deferred:
 				item.update(
diff --git a/erpnext/accounts/doctype/subscription/test_subscription.py b/erpnext/accounts/doctype/subscription/test_subscription.py
index b1e5653e8da..1d906fb9276 100644
--- a/erpnext/accounts/doctype/subscription/test_subscription.py
+++ b/erpnext/accounts/doctype/subscription/test_subscription.py
@@ -8,6 +8,7 @@ from frappe.utils.data import (
 	add_days,
 	add_months,
 	add_to_date,
+	add_years,
 	cint,
 	date_diff,
 	flt,
@@ -555,6 +556,33 @@ class TestSubscription(FrappeTestCase):
 		subscription.reload()
 		self.assertEqual(len(subscription.invoices), 0)
 
+	def test_invoice_generation_days_before_subscription_period_with_prorate(self):
+		settings = frappe.get_single("Subscription Settings")
+		settings.prorate = 1
+		settings.save()
+
+		create_plan(
+			plan_name="_Test Plan Name 5",
+			cost=1000,
+			billing_interval="Year",
+			billing_interval_count=1,
+			currency="INR",
+		)
+
+		start_date = add_days(nowdate(), 2)
+
+		subscription = create_subscription(
+			start_date=start_date,
+			party_type="Supplier",
+			party="_Test Supplier",
+			generate_invoice_at="Days before the current subscription period",
+			generate_new_invoices_past_due_date=1,
+			number_of_days=2,
+			plans=[{"plan": "_Test Plan Name 5", "qty": 1}],
+		)
+		subscription.process(nowdate())
+		self.assertEqual(len(subscription.invoices), 1)
+
 
 def make_plans():
 	create_plan(plan_name="_Test Plan Name", cost=900, currency="INR")