WooCommerce Tax Filter Not Working

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I'm using the official docs here: and their snippet below to create a threshold trigger so that orders below $110 are not taxed. The problem is, WC()->cart->subtotal seems to always be 0 when this filter fires even with items in cart. Any ideas / insight?

add_filter( 'woocommerce_product_tax_class', 'big_apple_get_tax_class', 1, 2 );

function big_apple_get_tax_class( $tax_class, $product ) {
    if ( WC()->cart->subtotal <= 110 )
        $tax_class = 'Zero Rate';

    return $tax_class;
}

I'm using the official docs here: https://docs.woocommerce/document/setting-up-taxes-in-woocommerce and their snippet below to create a threshold trigger so that orders below $110 are not taxed. The problem is, WC()->cart->subtotal seems to always be 0 when this filter fires even with items in cart. Any ideas / insight?

add_filter( 'woocommerce_product_tax_class', 'big_apple_get_tax_class', 1, 2 );

function big_apple_get_tax_class( $tax_class, $product ) {
    if ( WC()->cart->subtotal <= 110 )
        $tax_class = 'Zero Rate';

    return $tax_class;
}

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Share Improve this question asked Oct 24, 2018 at 20:45 NotaGuruAtAllNotaGuruAtAll 10111 bronze badge

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1 Answer 1

Sorted by: Reset to default 0

You should get the subtotal like this:

global $woocommerce;
$cart_subtotal = $woocommerce->cart->get_cart_subtotal();

From here. So you will can do something like this:

add_filter( 'woocommerce_product_tax_class', 'big_apple_get_tax_class', 1, 2 );

function big_apple_get_tax_class( $tax_class, $product ) {
    global $woocommerce;
    $cart_subtotal = $woocommerce->cart->get_cart_subtotal();
    if ( $cart_subtotal <= 110 )
        $tax_class = 'Zero Rate';

    return $tax_class;
}

I'm using the official docs here: and their snippet below to create a threshold trigger so that orders below $110 are not taxed. The problem is, WC()->cart->subtotal seems to always be 0 when this filter fires even with items in cart. Any ideas / insight?

add_filter( 'woocommerce_product_tax_class', 'big_apple_get_tax_class', 1, 2 );

function big_apple_get_tax_class( $tax_class, $product ) {
    if ( WC()->cart->subtotal <= 110 )
        $tax_class = 'Zero Rate';

    return $tax_class;
}

I'm using the official docs here: https://docs.woocommerce/document/setting-up-taxes-in-woocommerce and their snippet below to create a threshold trigger so that orders below $110 are not taxed. The problem is, WC()->cart->subtotal seems to always be 0 when this filter fires even with items in cart. Any ideas / insight?

add_filter( 'woocommerce_product_tax_class', 'big_apple_get_tax_class', 1, 2 );

function big_apple_get_tax_class( $tax_class, $product ) {
    if ( WC()->cart->subtotal <= 110 )
        $tax_class = 'Zero Rate';

    return $tax_class;
}

• woocommerce-offtopic
• filters

Share Improve this question asked Oct 24, 2018 at 20:45 NotaGuruAtAllNotaGuruAtAll 10111 bronze badge

Add a comment  | 

1 Answer 1

Sorted by: Reset to default 0

You should get the subtotal like this:

global $woocommerce;
$cart_subtotal = $woocommerce->cart->get_cart_subtotal();

From here. So you will can do something like this:

add_filter( 'woocommerce_product_tax_class', 'big_apple_get_tax_class', 1, 2 );

function big_apple_get_tax_class( $tax_class, $product ) {
    global $woocommerce;
    $cart_subtotal = $woocommerce->cart->get_cart_subtotal();
    if ( $cart_subtotal <= 110 )
        $tax_class = 'Zero Rate';

    return $tax_class;
}

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