Generating $100 a month ($1,200 a year) in dividend income requires building an investment portfolio structured around your total capital and average dividend yield. For example, assuming an average portfolio dividend yield of 4%, you would need an invested capital base of $30,000 distributed across stable, dividend-paying stocks or exchange-traded funds. Alternatively, securing a higher yield of 6% reduces the required principal investment to approximately $20,000. Investors typically select reliable blue-chip dividend growth stocks, real estate investment trusts (REITs), or high-yield dividend ETFs, reinvesting distributions initially to compound growth before drawing regular monthly passive income.