Follow the steps below to enter the income. The products would be counted in Cost of Goods Sold/Inventory or as supplies.
If you use cash method and your total average income for the last 3
years was less than $1,000,000 per year, you don't need to use the cost of goods sold section at all.
Instead, you can just write off
your merchandise under supplies or miscellaneous expenses when you purchase it. In this case, your
merchandise purchase in 2016 would be fully written off then as a business
expense. Your 2018 is written off in 2018.
HOW TO ENTER
without a 1099-Misc
First, sign in to My
TurboTax
Next, click the orange Take me to my return button
On the white bar at the top, click Federal Taxes
Then, Wages & Income
In the Self-Employment section
(you may need to click Show
more), next to Income and Expenses, click Start (or Revisit)
When asked "Did you have any self-employment
income or expenses?" select Yes
You'll see the screen titled "Tell us the type of
self-employment work you do." Enter your description, then Continue
On the next screen "Let's get income for
[description]" select the button Additional income. Includes 1099-K, check/cash
payments and Continue
The next screen will say "Tell us about
additional income for your [description] work." List descriptions and
amounts on this screen
