Selling items at a loss after claiming them as a business expense?

[Erik1]

If I am self-employed and bought an item 100% for business I would claim it as a business expense.

But if I later sold that item at a loss do I still have to pay taxes on that income, or claim that income, since I sold it at a loss?

And if I do have to claim that sale at a a loss as income, can I put down the original higher price I paid for the item as my cost-basis, even though I already claimed it as a business expense separately?

Thank you.

[Opus 17]

If you have deducted the cost of goods as a business expense, then any amount you receive for selling them is taxable income.  

By deducting your cost, you reduced your "basis" in the items to zero.  (One way of describing basis is that it is the amount of already-taxed dollars you have invested in something.  By deducting the cost, you now have zero after-tax dollars invested in the items.)  Any item you sell for more than it's basis is either ordinary income, or capital gains, depending on how long you owned the item and why you originally purchased it.  In the case of selling items that were purchased as inventory, the income is ordinary taxable income.

If you never deducted the cost as business expense, then your basis is the price you paid.  Selling personal items never creates a loss you can deduct, but you don't owe tax unless you sell for more than the basis.

[Erik1]

Thank you very much for your help Opus 17. That makes sense now.