The minimum is $25K. Although I'm a little hesitant to recommend it at that level. You would only have one position at $25K up to (I think, off the top of my head) about $80K. If you happened to get unlucky and get a position that went into a long winter, it would be pretty frustrating. The method puts you into an ETF in a one position account so as to eliminate the possibility of bankruptcy. Honestly, I don't know of anything else I would recommend in place of the method. I'd probably still do it at that level. But I'm a little squeamish recommending it to someone else with a small account. With $100k, you'd probably have two positions, maybe three. That gets more into my comfort zone.