If I have $80,000 of capital to generate a monthly income, there are several options to consider. The choice will depend on various factors such as risk tolerance, investment goals, and time horizon. Here's a detailed answer with examples and references:

1. High-Yield Savings Account: One option is to place a portion of the capital in a high-yield savings account. These accounts typically offer relatively low risk and higher interest rates compared to traditional savings accounts. As of August 2021, the average annual percentage yield (APY) for high-yield savings accounts is around 0.5% to 1.0% (source: Bankrate). Assuming an average APY of 0.75%, the monthly income generated from $80,000 would be approximately $50.

2. Dividend-Paying Stocks: Another option is to invest a portion of the capital in dividend-paying stocks. Dividends are regular cash payments made by companies to their shareholders. Some companies have a long history of consistently paying dividends, making them attractive for income-focused investors. For example, if you invest in a stock with a 3% dividend yield, the annual income generated would be $2,400 ($80,000 * 0.03). Dividing this by 12 months, the monthly income would be approximately $200.

3. Bond Funds: Investing in bond funds can provide a steady income stream. Bond funds pool investors' money to invest in a diversified portfolio of bonds issued by governments, municipalities, or corporations. These funds generate income through regular interest payments from the underlying bonds. The income generated by bond funds can vary depending on the prevailing interest rates and the credit quality of the bonds held. As of August 2021, the average yield of intermediate-term bond funds is around 2.5% (source: Morningstar). Assuming this yield, the monthly income generated from $80,000 would be approximately $166.

4. Real Estate Investment Trusts (REITs): REITs are companies that own, operate, or finance income-generating real estate. By investing in REITs, investors can earn a share of the income produced by these properties. REITs can provide attractive dividend yields, often higher than those of traditional stocks. However, they can be subject to market fluctuations and may have specific risks associated with the real estate sector. The dividend yield of REITs can vary significantly, but assuming an average yield of 4%, the annual income generated would be $3,200 ($80,000 * 0.04). Dividing this by 12 months, the monthly income would be approximately $267.

5. Diversification: It's important to note that diversifying the capital across multiple income-generating assets can help mitigate risk and maximize potential returns. By combining different investment options, such as a mix of high-yield savings accounts, dividend-paying stocks, bond funds, and REITs, one can create a diversified portfolio that generates a consistent monthly income.

It's worth mentioning that the examples provided are hypothetical and based on current market conditions, which can change over time. It's crucial to conduct thorough research, consult with a financial advisor, and consider one's individual circumstances and risk tolerance before making any investment decisions.

References:
- Bankrate: www.bankrate.com
- Morningstar: www.morningstar.com