I have sent inventory to a new client on consignment In other words he will pay for it as he sells it (weekly). How do I deal with this?

Cheers to your new client partnership, jf17. You'll need to establish the consignors as suppliers and set up classes, consignment income, and item accounts. Then, record the sales using the Invoice/Sales receipt. I'll guide you through the steps to begin this in QuickBooks Online (QBO).

First, enable the class tracking feature to track the records created. Here's how:

1. Go to the Gear icon.
2. Select Account and Settings.
3. Choose Advanced.
4. Select the Edit/ Pencil icon to open the fields in the Categories section.
5. Click Track classes.
6. Tap Save, then select Done.

The next step is to enter your consignors as suppliers:

1. Go to Expenses and select Suppliers.
2. Click New Supplier.
3. Enter the Supplier Information dialog in the field to use the consignor's information.
4. Hit Save.

Assign each of your consignors to a Class for reporting purposes:

1. Go to the Gear icon.
2. Under Lists, select All lists.
3. Select the Classes item to open the Classes page.
4. Click New.
5. Enter the consignor's Name in the Class dialog.
6. Tap Save.

Create two accounts to track consignment sales and payouts:

1. Go to the Gear icon and select Chart of Accounts.
2. Click New. In the Account dialog, choose Income from the Account Type dropdown list.
3. From the Detail Type dropdown list, select Sales of Product Income.
4. In the Name field, enter Consignment Sales.
5. Select Save and Close. Return to the Chart of Accounts.
6. Tap New.
7. In the Account dialog, select Income from the Account Type dropdown list.
8. From the Detail Type dropdown list, select Sales of Product Income.
9. Enter Consignment Payouts in the Name field. Then, Choose the Is sub-account checkbox and the Consignment Sales income account you set up.
10. Select Save and Close.

The next step is to create an item for consignment sales, here's how:

1. Go to the Gear icon.
2. Under Lists, select Products and Services.
3. Create a new Product/Service:
   1. Select New.
   2. From the Product/Service information panel, choose the appropriate option.
   3. Enter all the necessary information.
   4. From the Income account dropdown list, select Consignment Sales.
   5. Click Save and close.

Lastly, enter the invoices or sales receipts and then record the payouts. Please remember the following:

• Sales: When you create an Invoice/Sales receipt, use the Consignment item for the sale and select the appropriate consignor in the Class field.
• Payouts: When you record a payment by cheque to a consignor, ensure that the Consignment Payout account used to record the payout amount includes the consignor's Class on the same line as the payout account.

For reference, view this article for more details: Record consignment sales.

Moreover, to track your total sales, check out this article for future use: Use reports to see your sales and inventory status.

I'm ready to assist if you have any other concerns or questions besides recording consignment sales. Feel free to add a reply to this thread. Have a nice day.

Your answer seems to be for the company acting as the consignee.
However, what the questioner and I want to ask is that, as a consignor, we sell a large number of goods to the customer (without issuing an invoice). Only after the customer sells the goods will we issue an invoice for the actually sold part. In this case, as a consignor, how should we do the accounting, especially for the treatment of inventory?