Magento 2 : Add discount and tax in order programmatically

Question

I used below link to place an order, but in that, I cannot get any solution. how to add the tax or discount in order so anyone has done this thing?

please help to solve this issue.

http://www.blogtreat.com/programmatically-create-new-order-in-magento-2%EF%BB%BF/

Answer 1

Here I have share code to apply tax in your custom code:

$subTotal = 121;
$taxRate = .0825;
$taxAmount = $subTotal * $taxRate;
$shippingAmount = 15;
$totalAmount =  $subTotal + $taxAmount + $shippingAmount;

$order->setSubtotal($subTotal);
$order->setBaseSubtotal($subTotal);
$order->setGrandTotal($totalAmount);
$order->setBaseGrandTotal($totalAmount);
$order->setTaxAmount($taxAmount);
$order->setDiscountAmount(0);

If you found answer useful please accept it.