diff --git a/includes/class-wc-discounts.php b/includes/class-wc-discounts.php
index 15b32a138b4..a99cfb74ce3 100644
--- a/includes/class-wc-discounts.php
+++ b/includes/class-wc-discounts.php
@@ -379,7 +379,7 @@ class WC_Discounts {
 				}
 			}
 
-			$discount       = wc_cart_round_discount( min( $discounted_price, $discount ), 0 );
+			$discount       = wc_round_discount( min( $discounted_price, $discount ), 0 );
 			$cart_total     = $cart_total + $price_to_discount;
 			$total_discount = $total_discount + $discount;
 			$applied_count  = $applied_count + $apply_quantity;
@@ -389,7 +389,7 @@ class WC_Discounts {
 		}
 
 		// Work out how much discount would have been given to the cart as a whole and compare to what was discounted on all line items.
-		$cart_total_discount = wc_cart_round_discount( $cart_total * ( $coupon_amount / 100 ), 0 );
+		$cart_total_discount = wc_round_discount( $cart_total * ( $coupon_amount / 100 ), 0 );
 
 		if ( $total_discount < $cart_total_discount && $adjust_final_discount ) {
 			$total_discount += $this->apply_coupon_remainder( $coupon, $items_to_apply, $cart_total_discount - $total_discount );
diff --git a/includes/wc-cart-functions.php b/includes/wc-cart-functions.php
index 4eff33189ec..a89786ea4e0 100644
--- a/includes/wc-cart-functions.php
+++ b/includes/wc-cart-functions.php
@@ -374,13 +374,7 @@ function wc_cart_totals_shipping_method_label( $method ) {
  * @return float
  */
 function wc_cart_round_discount( $value, $precision ) {
-	if ( version_compare( PHP_VERSION, '5.3.0', '>=' ) ) {
-		return round( $value, $precision, WC_DISCOUNT_ROUNDING_MODE );
-	} elseif ( 2 === WC_DISCOUNT_ROUNDING_MODE ) {
-		return wc_legacy_round_half_down( $value, $precision );
-	} else {
-		return round( $value, $precision );
-	}
+	return wc_round_discount( $value, $precision );
 }
 
 /**
diff --git a/includes/wc-core-functions.php b/includes/wc-core-functions.php
index 6822904ec20..7bdba1ed0a3 100644
--- a/includes/wc-core-functions.php
+++ b/includes/wc-core-functions.php
@@ -2060,3 +2060,20 @@ function wc_decimal_to_fraction( $decimal ) {
 
 	return array( $numerator, $denominator );
 }
+
+/**
+ * Round discount.
+ *
+ * @param  double $value Amount to round.
+ * @param  int    $precision DP to round.
+ * @return float
+ */
+function wc_round_discount( $value, $precision ) {
+	if ( version_compare( PHP_VERSION, '5.3.0', '>=' ) ) {
+		return round( $value, $precision, WC_DISCOUNT_ROUNDING_MODE );
+	} elseif ( 2 === WC_DISCOUNT_ROUNDING_MODE ) {
+		return wc_legacy_round_half_down( $value, $precision );
+	} else {
+		return round( $value, $precision );
+	}
+}