Residual income is income received on a regular basis with little effort required to maintain it. It can come from affiliate marketing where one is paid commissions for selling other companies' products, network marketing where one receives commissions for sales of products as well as sales by recruits, or internet marketing by selling one's own products or services online. While residual income requires initial work to generate, the money continues coming in despite only working on it once, allowing one to potentially earn six figures with affiliate marketing commissions and network marketing teams.