Set Minimum Order Amount in WooCommerce

If you want to require a minimum order amount in your WooCommerce store, add the following code to your functions.php file. The code displays a notice in the cart and prevents checkout. For more on WooCommerce hooks.

add_action( 'woocommerce_checkout_process', function() {
	$minimum = 50;
	if ( WC()->cart->get_subtotal() < $minimum ) {
		wc_add_notice(
			sprintf( 'The minimum order amount is %s. Your current cart total is %s.',
				wc_price( $minimum ),
				wc_price( WC()->cart->get_subtotal() )
			), 'error'
		);
	}
} );

add_action( 'woocommerce_before_cart', function() {
	$minimum = 50;
	if ( WC()->cart->get_subtotal() < $minimum ) {
		wc_print_notice(
			sprintf( 'The minimum order amount is %s. Please add more products to your cart.',
				wc_price( $minimum )
			), 'notice'
		);
	}
} );

Replace 50 with your desired minimum amount.