Modify the tax behavior for deposits

modify-tax-behavior-for-deposits.php

add_filter('woocommerce_calculated_total', 'exclude_tax_from_deposits', 10, 2);
function exclude_tax_from_deposits($total, $cart) {
    if (class_exists('WC_Deposits_Cart_Manager') && WC_Deposits_Cart_Manager::is_deposit_enabled_for_cart()) {
        $total -= WC()->cart->get_taxes_total(); // Exclude taxes from deposit
    }
    return $total;
}