public static function calc_inclusive_tax( $price, $rates ) {
		$taxes          = array();
		$compound_rates = array();
		$regular_rates  = array();

		// Index array so taxes are output in correct order and see what compound/regular rates we have to calculate.
		foreach ( $rates as $key => $rate ) {
			$taxes[ $key ] = 0;

			if ( 'yes' === $rate['compound'] ) {
				$compound_rates[ $key ] = $rate['rate'];
			} else {
				$regular_rates[ $key ] = $rate['rate'];
			}
		}

		$compound_rates = array_reverse( $compound_rates, true ); // Working backwards.

		$non_compound_price = $price;

		foreach ( $compound_rates as $key => $compound_rate ) {
			$tax_amount         = apply_filters( 'woocommerce_price_inc_tax_amount', $non_compound_price - ( $non_compound_price / ( 1 + ( $compound_rate / 100 ) ) ), $key, $rates[ $key ], $price );
			$taxes[ $key ]     += $tax_amount;
			$non_compound_price = $non_compound_price - $tax_amount;
		}

		// Regular taxes.
		$regular_tax_rate = 1 + ( array_sum( $regular_rates ) / 100 );

		foreach ( $regular_rates as $key => $regular_rate ) {
			$the_rate       = ( $regular_rate / 100 ) / $regular_tax_rate;
			$net_price      = $price - ( $the_rate * $non_compound_price );
			$tax_amount     = apply_filters( 'woocommerce_price_inc_tax_amount', $price - $net_price, $key, $rates[ $key ], $price );
			$taxes[ $key ] += $tax_amount;
		}

		/**
		 * Round all taxes to precision (4DP) before passing them back. Note, this is not the same rounding
		 * as in the cart calculation class which, depending on settings, will round to 2DP when calculating
		 * final totals. Also unlike that class, this rounds .5 up for all cases.
		 */
		$taxes = array_map( array( __CLASS__, 'round' ), $taxes );

		return $taxes;
	}