Credit Card Sign-Up Bonuses – This one might not seem like a source of income but ever since I discovered how lucrative churning credit cards can be I consider it part of my income. Just last year alone, I made over $10,000 tax free in travel, cash and gift cards from various sign-ups. It’s not as simple as just signing up for a card though, it requires a lot of research and some maintenance every couple weeks.
It is always fun (when things are going well!) to look back at the various streams to see what’s working and what’s not. I found that a lot of my angel investing just wasn’t working well, fortunately it wasn’t a lot! Side businesses are always nice, vs. pure investments, because of actual control. Plus you can shut it down if things go south… hard to tell someone (and convince them when you’ve only kicked in a few bucks) that it’s time to close up shop and return some capital.
Portfolio income can come from multiple sources – interest/bond coupons, stock dividends, financial strategies including derivatives and capital growth.  Each offers some cash flow and some also offer potential capital gain with some risk from liquidity and volatile prices.  In this low-yield environment, many investors rely too heavily on cash flows and to pursue this are venturing further into riskier areas than they’d normally consider.