Yes, you can keep all the accounting records of the furniture you're selling while doing the interior design in one QuickBooks account. To ensure everything in your books is accurate, you can also work and consult with your accountant.
You can enter them in QuickBooks as inventory (furniture) and service (interior design) items. Here's are the steps to complete the process.
Click the Gear icon at the upper right corner and choose Products and Services.
On the Products and Services screen, click New.
Select Inventory or Service.
Add a name. If you track SKUs, enter a SKU for the product. From the Category ▼ drop-down, select the category that best describes your product or service. Learn more about item categories.
Select the I sell this product/service to my customers checkbox. If you don't sell the item, you can leave it unchecked.
In the Sales information section, enter a description. This is what your customers will see on their sales form.
Enter an amount in the Sales price/rate field. Note: If you charge a variable rate for services, you can leave the Sales price/rate data field blank. Add the price when you fill out the invoice or sales receipt.
Select the Income account ▼ drop-down and the account you want to use to track the sale. Tip: You can use an income account QuickBooks already set up for you. If you need a different account, scroll to the top of the drop-down, and select + Add new.
If you need to track sales tax, select Taxable - standard rate from the a Sales tax category ▼ drop-down. If the item has a special tax rate, select Choose a special category and find the best option.Note: If you don’t see this drop-down, follow the steps to set up sales tax in QuickBooks.