Not taxable for a single member LLC. The LLC is basically an extension of you. I also loaned it to the LLC at fair market value repayable in Bitcoin or cash. This effectively let's me get the cash back out tax free leaving the LLC the Bitcoin to borrow against and fly wheel indefinitly. Plus LLC received the Bitcoin at my cost basis and could sell at long term capital gains rates if it wanted too..
Say you donate 1M worth of Bitcoin to your LLC. The first 1M you take back out is simply a return of capital.
There is basically zero issue doing this for a single member LLC. Its a different story for a C-corp but still not impossible to do a capital contribution, but you then lose all LTCG benefits and simple pay corporate tax rates.
