WooCommerce offers several ways of setting the parameters for WooCommerce purchase limit. Although the steps are different, the outcome is often identical. However, I consider the following steps to be very effective. I will use the woocommerce_check_cart_items action provided by WooCommerce to run the functions and execute the code.

Setting a Minimum Weight Requirement For WooCommerce Purchase Limit
Many stores often do not allow their customers to checkout until the weight of the purchase does not exceed a pre-set limit. Minimum weight requirements significantly reduce delivery costs and the process becomes more streamlined. Bear in mind that all weight calculations are carried out in weight units set under WooCommerce – > Settings – > Products.
Place the following code in the functions.php, located in the theme folder.
add_action( 'woocommerce_check_cart_items', 'cldws_set_weight_requirements' );
function cldws_set_weight_requirements() {
// Only run in the Cart or Checkout pages
if( is_cart() || is_checkout() ) {
global $woocommerce;
// Set the minimum weight before checking out
$minimum_weight = 30;
// Get the Cart's content total weight
$cart_contents_weight = WC()->cart->cart_contents_weight;
// Compare values and add an error is Cart's total weight
if( $cart_contents_weight < $minimum_weight ) {
// Display our error message
wc_add_notice( sprintf('<strong>A Minimum Weight of %s%s is required before checking out.</strong>'
. '<br />Current cart weight: %s%s',
$minimum_weight,
get_option( 'woocommerce_weight_unit' ),
$cart_contents_weight,
get_option( 'woocommerce_weight_unit' ),
get_permalink( wc_get_page_id( 'shop' ) )
),
'error' );
}
}
}
Setting a Minimum Dollar Amount per Order
A minimum dollar amount is another important restriction on the store. Minimum dollar amounts are often used to keep all transactions at a common base value per transaction. To set this limit, use the following code
add_action( 'woocommerce_check_cart_items', 'cldws_set_min_total');
function cldws_set_min_total() {
// Only run in the Cart or Checkout pages
if( is_cart() || is_checkout() ) {
global $woocommerce;
// Set minimum cart total
$minimum_cart_total = 100;
// A Minimum of 100 AUD is required before checking out.
$total = WC()->cart->subtotal;
// Compare values and add an error is Cart's total
if( $total <= $minimum_cart_total ) {
// Display our error message
wc_add_notice( sprintf( '<strong>A Minimum of %s %s is required before checking out.</strong>'
.'<br />Current cart\'s total: %s %s',
$minimum_cart_total,
get_option( 'woocommerce_currency'),
$total,
get_option( 'woocommerce_currency') ),
'error' );
}
}
}
Conclusion
WooCommerce permits you to utilize actions and filters to change the ordinary checkout process. I hope that you will implement these two limits to your WooCommerce store. If you need clarification or wish to contribute to the discussion, please leave a comment below.
Owais Khan
Owais works as a Marketing Manager at Cloudways (managed hosting platform) where he focuses on growth, demand generation, and strategic partnerships. With more than a decade of experience in digital marketing and B2B, Owais prefers to build systems that help teams achieve their full potential.