Affiliate marketing is a great way to earn passive income. You can find products to share via your social media platforms, website, or through an email blast. Once somebody purchases a product, you are given a 20-70% commission. I like to use Clickbank and find affiliates that correspond with my meditation brand. You can also seek affiliates out directly such as Hay House which offers a 50% commission on any courses sold.
In equity valuation, residual income represents an economic earnings stream and valuation method for estimating the intrinsic value of a company's common stock. The residual income valuation model values a company as the sum of book value and the present value of expected future residual income. Residual income attempts to measure economic profit, which is the profit remaining after the deduction of opportunity costs for all sources of capital.