Are there any ETers who are doing this? A couple of relatives asked me to trade some of their money in my account in exchange for a cut of the after-tax profits. At the time we all thought it would be easiest to just treat all the profit as my own for tax purposes and then not bother my "silent partners" with the tax burdens associated with their share of the profits (since there was no way to show that the profits belonged to them to begin with). This works well with small profits, however, as our combined profits grow, then I'll be pushed more quickly into a higher tax bracket than if we were to split the profits pre-tax, making this approach less and less tax efficient. If I wanted to instead spread the tax burden over myself and my two relatives (without having to go through the complicated hassles of LLPs or incorporated investment clubs, etc.) would it be easier to just do a joint tenancy in common account? It looks like that would be the most pain-free way to take advantage of everyone's lower marginal tax rates. Are there easier ways of accomplishing my stated goal of being as tax efficient as possible with minimal hassles? Any help would be greatly appreciated.