Magento 2.3.5 Estimate Shipping should be apply on Subtotal (Incl.tax)

Question

We're in trouble for a few days.

After upgrade to the latest Magento 2.3.5, we got an issue in estimate shipping calculation on the cart page. Actually shipping takes value Subtotal (Excl. Tax) for calculation but we need to apply on Subtotal (Incl. Tax).

Table Rate Import file setting: Shipping should be 0 (zero) when price greater 40

From below image shipping should be 0 (zero)

Please check the admin store configuration changes.

Shipping Display Setting

Tax Calculation Setting

Table-rate Setting

Table-rate import file price Setting

Answer 1

found this:

vendor\magento\module-tax\Model\Sales\Total\Quote\CommonTaxCollector.php Line 596FF

$address = $shippingAssignment->getShipping()->getAddress();

$address->setBaseSubtotalTotalInclTax($baseSubtotalInclTax);

$address->setSubtotal($total->getSubtotal());

$address->setBaseSubtotal($total->getBaseSubtotal());

removed

$address->setSubtotal($total->getSubtotal());

$address->setBaseSubtotal($total->getBaseSubtotal());

Hope it will work for you.

Answer 2

When table-rates looks at the price it always looks at the tax-exclusive price and ignores promotional discounts as well.

Even though if the client wants to calculate based on subtotal with inclusive tax,

create plugin here, Class \Magento\Quote\Model\Quote\Address method: requestShippingRates

Manipulate the value of $request->setPackageValue($item ? $item->getBaseRowTotal() : $this->getBaseSubtotal());

Thanks