NOWHERE does it say that you are taxed for income when you produce goods. You are ONLY taxed when you sell the goods you produce!
Agreed. I looked at the rules for inventories when trying to figure out bitcoin taxation. I didn't see an indication that inventories are taxable prior to sale. Rather, it seems that tax is due on income when goods are sold. The income is reduced by the "cost of goods sold". For a retailer, that would primarily be the amount paid for the goods, and for a manufacturer, the cost of manufacturing and raw materials.
That said, the first question is whether bitcoins are inventory or a capital asset. That affects whether they are eligible for the more favorable capital gains tax rate and whether there is a limit on deducting losses. I found an interesting discussion of the distinction in the context of real estate:
http://www.nysscpa.org/cpajournal/2007/707/essentials/p42.htmProperty is a capital asset unless it meets one of the specific definitions of a noncapital asset, one of which is "Stock in trade, inventory, and other property you hold mainly for sale to customers in your trade or business."
If you mine bitcoins and sell them all on Mt. Gox, it may be true that they are held "mainly for sale" but I would question whether they are for sale "to customers". If you sell via an exchange or market without even knowing who bought them, and without any advertising, salespeople, etc., it hardly seems that you are in the business of selling to customers. I found some discussion of what constitutes a "customer" in this article (search for "customer"):
http://www.chapman.com/media/news/media.858.pdfIf you are running a business like Bitcoin4Cash (in the U.S.), it's a different story and the bitcoins are likely inventory. If you advertise bitcoins for sale on #bitcoin-otc, it's more of a gray area. If you mine coins and hold them as an investment, they do not seem to be held "mainly for sale". If you sell some and hold some, it's another gray area.
Information is for entertainment purposes only, this is not tax advice, etc.