How to programmatically create invoice in magento2

In Magento, we need to generate the invoice of an order automatically when the order is placed, or the payment status is successful for a particular order.

If you want to programmatically create the invoice for a particular order, then please follow the solution below.

Here you can learn how to create an invoice for a particular order or a part of a particular order using item IDs.

Create an invoice for a new order-

Step 1. Create a Controller CreateInvoice.php in your custom module at app / code / { vendorname } / { modulename } / Controller / { Action } /

Write the code below inside your controller file (CreateInvoice.php) :

<?php
/**
 * Webkul Software.
 *
 * @category  Webkul
 * @package   Webkul_Grid
 * @author    Webkul
 * @copyright Copyright (c) 2010-2016 Webkul Software Private Limited (https://webkul.com)
 * @license   https://store.webkul.com/license.html
 */

namespace Webkul\TestBlogs\Controller\Blogs;

class CreateInvoice extends \Magento\Framework\App\Action\Action
{
    /**
     * @var \Magento\Sales\Api\OrderRepositoryInterface
     */
    protected $_orderRepository;

    /**
     * @var \Magento\Sales\Model\Service\InvoiceService
     */
    protected $_invoiceService;

    /**
     * @var \Magento\Framework\DB\Transaction
     */
    protected $_transaction;

    public function __construct(
        \Magento\Framework\App\Action\Context $context,
        \Magento\Sales\Api\OrderRepositoryInterface $orderRepository,
        \Magento\Sales\Model\Service\InvoiceService $invoiceService,
        \Magento\Sales\Model\Order\Email\Sender\InvoiceSender $invoiceSender,
        \Magento\Framework\DB\Transaction $transaction
    ) {
        $this->_orderRepository = $orderRepository;
        $this->_invoiceService = $invoiceService;
        $this->invoiceSender = $invoiceSender;
        $this->_transaction = $transaction;
        parent::__construct($context);
    }
    /**
     * Marketplace order invoice controller.
     *
     * @return \Magento\Framework\View\Result\Page
     */
    public function execute()
    {
        $orderId = 9; //order id for which want to create invoice
        $order = $this->_orderRepository->get($orderId);
        if($order->canInvoice()) {
            $invoice = $this->_invoiceService->prepareInvoice($order);
            $invoice->register();
            $invoice->save();
            $transactionSave = $this->_transaction->addObject(
                $invoice
            )->addObject(
                $invoice->getOrder()
            );
            $transactionSave->save();
            $this->invoiceSender->send($invoice);
            //send notification code
            $order->addStatusHistoryComment(
                __('Notified customer about invoice #%1.', $invoice->getId())
            )
            ->setIsCustomerNotified(true)
            ->save();
        }
    }
}

The above example will let you generate an order invoice for the complete order.

Now, If there are multiple items in your order and you want to generate an invoice for a particular item in your order, then please follow the code below to be able to do so.

Step 1. Create a Controller CreateInvoice.php in your custom module at app / code / { vendorname } / { modulename } / Controller / { Action } /

Create an invoice for a particular item in your order

<?php
/**
 * Webkul Software.
 *
 * @category  Webkul
 * @package   Webkul_Grid
 * @author    Webkul
 * @copyright Copyright (c) 2010-2016 Webkul Software Private Limited (https://webkul.com)
 * @license   https://store.webkul.com/license.html
 */

namespace Webkul\Grid\Controller;

class CreateInvoice extends Magento\Framework\App\Action\Action
{
    /**
     * @var \Magento\Sales\Api\OrderRepositoryInterface
     */
    protected $_orderRepository;

    /**
     * @var \Magento\Sales\Model\Service\InvoiceService
     */
    protected $_invoiceService;

    /**
     * @var \Magento\Framework\DB\Transaction
     */
    protected $_transaction;

    public function __construct(
        \Magento\Framework\App\Action\Context $context,
        \Magento\Sales\Api\OrderRepositoryInterface $orderRepository,
        \Magento\Sales\Model\Order\Email\Sender\InvoiceSender         $invoiceSender,
        \Magento\Sales\Model\Service\InvoiceService $invoiceService,
        \Magento\Framework\DB\Transaction $transaction
    ) {
        $this->_orderRepository = $orderRepository;
        $this->_invoiceService = $invoiceService;
        $this->invoiceSender = $invoiceSender;
        $this->_transaction = $transaction;
        parent::__construct($context);
    }
    /**
     * Marketplace order invoice controller.
     *
     * @return \Magento\Framework\View\Result\Page
     */
    public function execute()
    {
        $orderId = 1; //order id for which want to create invoice
        $order = $this->_orderRepository->get($orderId);
        if($order->canInvoice()) {
            $itemsArray = ['80'=>2]; //here 80 is order item id and 2 is it's quantity to be invoice
            $shippingAmount = '10.00';
            $subTotal = '110.00';
            $baseSubtotal = '110.00';
            $grandTotal = '110.00';
            $baseGrandTotal = '110.00';
            $invoice = $this->_invoiceService->prepareInvoice($order, $itemsArray);
            $invoice->setShippingAmount($shippingAmount);
            $invoice->setSubtotal($subTotal);
            $invoice->setBaseSubtotal($baseSubtotal);
            $invoice->setGrandTotal($grandTotal);
            $invoice->setBaseGrandTotal($baseGrandTotal);
            $invoice->register();
            $transactionSave = $this->_transaction->addObject(
                $invoice
            )->addObject(
                $invoice->getOrder()
            );
            $transactionSave->save();
            $this->invoiceSender->send($invoice);   
            //send notification code
            $order->addStatusHistoryComment(
                __('Notified customer about invoice #%1.', $invoice->getId())
            )
            ->setIsCustomerNotified(true)
            ->save();
        }
    }
}

How to programmatically create an invoice in Magento

In this way, you can create an invoice for a particular product in an order or for a complete order. After creation of the invoice, you can check it in the admin panel’s sales order grid.

You may also check the links below:

• https://webkul.com/blog/how-to-programmatically-create-shipment-in-magento2/
• https://developer.adobe.com/commerce/webapi/rest/tutorials/inventory/create-invoice/

If you require technical support, feel free to email us at support@webkul.com

Additionally, explore a wide array of solutions to boost your store’s capabilities by visiting our Adobe Commerce modules section and Adobe Commerce marketplace addons.

Or looking to improve your store’s speed and overall performance? Check out our Magento 2 Speed & Optimization services.

Get expert support and build customized solutions by hiring skilled Adobe Commerce developers for your project.