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Is Main Street Capital the Best Monthly Dividend Stock to Buy Now?

By Rich Duprey Published Apr 25, 9:25AM EDT

Quick Read

Main Street Capital (MAIN) trades at a 1.6x to 1.8x price-to-NAV premium with a ~6.5% yield and above-100% NII coverage, outperforming peers like Gladstone Investment (GAIN) and Gladstone Capital (GLAD) on consistency despite offering lower yields than Ares Capital (ARCC). The premium valuation reflects the BDC’s track record of NAV growth, conservative underwriting, and internally managed operations.
Investors are willing to pay a premium for Main Street’s dependable monthly dividend income and reliable coverage over time, making it attractive for long-term income portfolios in a high-rate environment.
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Is Main Street Capital the Best Monthly Dividend Stock to Buy Now? — © wsf-s / Shutterstock.com

The market has spent much of 2026 stuck between two competing forces — stubbornly high interest rates and a growing expectation they’ll eventually fall. That tension has left income investors asking a simple question: where can you still find a reliable yield without taking on outsized risk?

Monthly dividend stocks are an obvious place to look. But not all of them are built the same. So where does Main Street Capital (NYSE:MAIN | MAIN Price Prediction) fit in — and could it really be the best monthly dividend stock to buy right now?

Why BDCs Play by Different Rules

Let’s start with the structure, because it matters. Main Street Capital is a business development company (BDC). That’s a fancy way of saying it provides financing — primarily debt and some equity — to lower middle-market companies that don’t have easy access to traditional bank funding. In exchange, it earns interest income and occasionally equity upside.

Here’s what separates BDCs from typical dividend stocks:

They must distribute at least 90% of taxable income to shareholders, similar to real estate investment trusts (REITS)
That leads to higher yields, but also limits retained earnings
Earnings are best measured by net investment income (NII), not EPS

That last point is critical. Traditional metrics like P/E ratios can mislead investors because they don’t reflect how cash actually flows through a BDC. Instead, savvy investors focus on NII per share, net asset value (NAV), and dividend coverage ratio.

That’s the lens we need to evaluate MAIN properly.

How MAIN Stacks Up Against Its Peers

Let’s not box Main Street into a single comparison because it doesn’t fit neatly into one. If you’re buying the BDC for monthly income, you need to compare it to the few BDCs that actually pay monthly. But if you’re judging whether its premium valuation is justified, you also need to see how it stacks up against the highest-quality BDCs overall.

Let’s look at both — because each answers a different question.

Monthly Dividend BDCs: The True Income Comparison

There aren’t many — which is exactly why MAIN stands out.

Metric	Main Street Capital	Gladstone Investment (NASDAQ:GAIN)	Gladstone Capital (NASDAQ:GLAD)
Dividend Frequency	Monthly	Monthly	Monthly
Base Yield	~6.5%	~6%	~8%
Price/NAV	~1.6–1.8x	~1.2–1.3x	~1.0–1.1x
Specials	Yes (semi-regular)	Yes (frequent)	Occasional
NII Coverage	>100%	Variable	Less consistent

Here’s what the numbers tell us:

Gladstone Investment comes closest to Main Street’s hybrid model of income plus equity upside, but its results have been less consistent.
Gladstone Capital offers a higher yield, but that income has shown more variability and weaker coverage at times.

Main Street Capital doesn’t lead on yield, but it does lead on consistency and coverage, which is what income investors rely on when the market gets choppy.

Best-in-Class BDCs: The Valuation Reality Check

Now let’s zoom out. Because monthly payments don’t mean much if the underlying business isn’t strong.

Metric	Main Street Capital	Ares Capital (NASDAQ:ARCC)
Dividend Yield	~6.5% base	~9%
Price/NAV	~1.6–1.8x	~1.1x
Dividend Frequency	Monthly	Quarterly
NII Coverage	>100%	~100%
Scale	Lower middle market focus	Large-cap sponsor-backed deals

Here’s what stands out: Ares Capital offers a higher yield and trades closer to NAV, while Main Street trades at a 50% to 70% premium — and has for years.

Key Takeaway

That premium isn’t random. It reflects the BDC’s long history of NAV growth, more conservative underwriting, and internally managed operations that keep costs lower over time. That suggests investors are willing to accept a lower yield in exchange for greater reliability.

However, valuation still matters. At current levels, Main Street looks like a solid buy for long-term income investors, and if shares pull back closer to 1.4x NAV or below, that would signal a more aggressive entry point. In any case, the stock’s premium has been durable — and justified by performance.

Yet, investors should be realistic. You’re not buying Main Street for maximum income today. You’re buying it for dependable income over time. If the stock dips, lean in more aggressively. If it doesn’t, it still deserves a place on a watchlist — or in a diversified income portfolio.

When all is said and done, Main Street Capital may not be the cheapest BDC — but it makes a strong case as one of the best.

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About the Author Rich Duprey →

After two decades of patrolling the dark corners of suburbia as a police officer, Rich Duprey hung up his badge and gun to begin writing full time about stocks and investing. For the past 20 years he’s been cruising the markets looking for companies to lock up as long-term holdings in a portfolio while writing extensively on the broad sectors of consumer goods, technology, and industrials. Because his experience isn’t from the typical financial analyst track, Rich is able to break down complex topics into understandable and useful action points for the average investor. His writings have appeared on The Motley Fool, InvestorPlace, Yahoo! Finance, and Money Morning. He has been featured in both U.S. and international publications, including MarketWatch, Financial Times, Forbes, Fast Company, and USA Today.