public function get_subtotal_to_display( $compound = false, $tax_display = '' ) {
		$tax_display = $tax_display ? $tax_display : get_option( 'woocommerce_tax_display_cart' );
		$subtotal    = $this->get_cart_subtotal_for_order();

		if ( ! $compound ) {

			if ( 'incl' === $tax_display ) {
				$subtotal_taxes = 0;
				foreach ( $this->get_items() as $item ) {
					$subtotal_taxes += self::round_line_tax( $item->get_subtotal_tax(), false );
				}
				$subtotal += wc_round_tax_total( $subtotal_taxes );
			}

			$subtotal = wc_price( $subtotal, array( 'currency' => $this->get_currency() ) );

			if ( 'excl' === $tax_display && $this->get_prices_include_tax() && wc_tax_enabled() ) {
				$subtotal .= ' <small class="tax_label">' . WC()->countries->ex_tax_or_vat() . '</small>';
			}
		} else {
			if ( 'incl' === $tax_display ) {
				return '';
			}

			// Add Shipping Costs.
			$subtotal += $this->get_shipping_total();

			// Remove non-compound taxes.
			foreach ( $this->get_taxes() as $tax ) {
				if ( $tax->is_compound() ) {
					continue;
				}
				$subtotal = $subtotal + $tax->get_tax_total() + $tax->get_shipping_tax_total();
			}

			// Remove discounts.
			$subtotal = $subtotal - $this->get_total_discount();
			$subtotal = wc_price( $subtotal, array( 'currency' => $this->get_currency() ) );
		}

		return apply_filters( 'woocommerce_order_subtotal_to_display', $subtotal, $compound, $this );
	}