How are you supposed to calculate the gains on a transaction that may be spending hundreds of small inputs mined over several years?
You don't. There's no taxable event unless you sell. Costs offset sales. There is no need to do maths on the btc. You just expense all the usd outflows and accrue all the usd inflows. The difference is your gain or loss. This is a very favorable situation for hoarders.
aminorex, DeathAndTaxes, anyone else - I've got a question. Any advice will of course be taken in the IANAL context, but any guidance or direction that could be given would be sincerely appreciated. If this has a clear answer, I just have a lot of data to go back to my records, find, and properly format.
If the answer to this question is unclear, I may need to pull in a tax attorney or something else in addition to the CPA I just grabbed.
What about selling a casascius coin in exchange for electronic BTC?
My interpretation of the IRS guidance (and preliminary interpretation of my still-trying-to-absorb-the-info CPA) is that this qualifies as a taxable event, I need to consider that an exchange, note the value of the BTC at the time of exchange, and pay tax on the appreciated value of the BTC from the time of acquisition.
I would love to be wrong on this.
For example, let's say I bought a 1 BTC casascius coin directly from Mike when they were worth $5.
If I were to exchange that 1 BTC coin for 3 BTC, and the current spot price is $500, then at the time of the trade:
value of goods received = 3*500=$1500.
cost = $5.
Profit = $1495, taxes due on this amount.
Cost basis for the newly acquired 3 BTC = $500.
Or this example (No-one would ever do this, but it makes a point):
I buy a 1 BTC casascius coin, acquisition cost: $5.
I exchange that 1 BTC coin for 0.25 BTC, and the current spot price is $500.
Profit = value of goods received - cost, so ($500*.25)=$125, subtract acquisition cost of $5, taxes due on $120.
Cost basis for the newly acquired 0.25 BTC = $125
Does this seem correct?
The exchange of the goods is a taxable event?