Myujth

I want to remove the Subtotals from Cart, Checkout, Order Received, Order Details and the emails. I don't want to use CSS, as it won't remove the reference from the order details page and emails. I have tried this code:

add_filter( 'woocommerce_get_order_item_totals', 'adjust_woocommerce_get_order_item_totals' );

function adjust_woocommerce_get_order_item_totals( $totals ) 
 unset($totals['cart_subtotal'] );
 return $totals;

It isn't working, the Subtotal is visible on the Cart and Checkout pages.

Is there any other function or do I have to create a separate woocommerce folder under my active theme and delete any reference of "Subtotal" from the templates.

1) For All orders pages and email notifications (Order received, Order pay, Order view and emails)

Your code works and remove the subtotal line from totals lines:

add_filter( 'woocommerce_get_order_item_totals', 'remove_subtotal_from_orders_total_lines', 100, 1 );
function remove_subtotal_from_orders_total_lines( $totals ) 
 unset($totals['cart_subtotal'] );
 return $totals;

Code goes in function.php file of your active child theme (active theme). Tested and works.

2) For cart and checkout pages:

You need to create a separate "woocommerce" folder under your active theme for the following templates:

For cart - cart/cart-totals.php | remove the code block from line 32 to 35:

<tr class="cart-subtotal">
 <th><?php _e( 'Subtotal', 'woocommerce' ); ?></th>
 <td data-title="<?php esc_attr_e( 'Subtotal', 'woocommerce' ); ?>"><?php wc_cart_totals_subtotal_html(); ?></td>
</tr>

For checkout - checkout/review-order.php | remove the code block from line 58 to 61:

<tr class="cart-subtotal">
 <th><?php _e( 'Subtotal', 'woocommerce' ); ?></th>
 <td><?php wc_cart_totals_subtotal_html(); ?></td>
</tr>

Save both templates… You are done.