Income-based methods can be used to estimate your start-up's future cash flows and discount them to their present value, reflecting your start-up's profitability, growth potential, and risk profile. However, this approach requires a lot of assumptions, projections, and calculations, which can be difficult for early-stage start-ups. Two examples of income-based methods are discounted cash flow (DCF) and capitalization of earnings. DCF projects your start-up's free cash flow for a certain period (usually 5 to 10 years) and discounts it to its present value using a discount rate. On the other hand, capitalization of earnings applies a multiple to your start-up's normalized earnings based on the expected growth rate and risk. For instance, if your start-up's free cash flow is projected to be $1 million in year 1, $1.2 million in year 2, $1.4 million in year 3, $1.6 million in year 4, and $1.8 million in year 5 with a discount rate of 20%, and normalized earnings are $500,000 with a multiple of 15x based on a growth rate of 10% and a risk factor of 0.5, then the valuation would be $4.7 million and $7.5 million respectively.