So as I understand, Long-term classification was the Year + 1 day you were talking about, which is a better investment bracket ? Correct. Long-term Captial gains are taxed at a lower rate than normal gain or income.

How would registering a business affect my investmented taxable amount compared to individual ? Is it a reduction ?If you get in the 'business' of buying/selling it would be similar to a broker in which case you are dealing with self-employment income tax and possible other issues (hobby/loss rules, etc.).

Something else that confuses me, is simply byuing bitcoins through a wallet like Coinbase or Circle from my bank account, holding until the price rises, then selling and making profit considered a capital gain / loss ? Yes.  The IRS considers BTC property which therefore would be a capital gain/loss.

I'll look into Schedule D.