Here are four monthly dividend stocks that currently yield over 4% and have strong foundations to support their ability to produce reliable passive income. The BDC pays out a portion of this recurring income via a monthly dividend set at a sustainable rate. The company's monthly dividend currently yields 4.9%, while the overall yield increases to 6.9% when including its annualized supplemental payments. Top-notch monthly dividend stocksAgree Realty, EPR Properties, Main Street Capital, and Stag Industrial all pay monthly dividends with yields above 4%. All four companies expect to continue increasing their monthly dividends, further enhancing their appeal as ideal monthly dividend stocks to buy for passive income.