Can anyone enlighten me whether we, individual traders, can use part of our earnings to contribute to a traditional IRA? I heard that our income is not "earned" and therefore does not qualify, but I'm not sure. How about a Roth IRA or other similar retirement-related schemes? Where can I look to get the definitive answer or some authentic information source that does not cost $hundreds per hour? Any suggestions or insights will be very welcome. TIA.