September has a well-earned reputation as a rough month for equities, which is exactly why income-focused investors tend to load up on cash-flow machines heading in. Monthly dividend payers smooth the ride: they compress reinvestment lag, front-load income, and let holders keep clipping checks regardless of what the broader market does. Below are five US-listed monthly payers with September-relevant declarations already on the books, each with a data-verified bull case and one caveat worth watching.
Realty Income (NYSE: O)
Realty Income (NYSE:O | O Price Prediction) is a net lease retail REIT and the self-styled "Monthly Dividend Company," with a track record of 331 total dividend records stretching back to 1999. Shares closed at $62.60 on August 21, 2026, and the stock is up 14.44% year to date. The most recent declared monthly dividend is $0.271 per share, with an ex-dividend date of August 31, 2026 and a payment date of September 15, 2026.
The bull case is coverage plus growth. Q2 AFFO per share rose 3.8% to $1.09, and management lifted full-year AFFO guidance to $4.44 to $4.45 alongside a bumped $10 billion investment target. Occupancy sits at 98.8% with rent recapture at 102.7%. Risk: leverage has drifted, with net debt to EBITDA at 5.4 times, and the stock has slipped 3.33% over the past month.
Main Street Capital (NYSE: MAIN)
Main Street Capital (NYSE:MAIN) is a business development company (BDC), meaning it must distribute at least 90% of taxable income to shareholders, which structurally supports its monthly payout. Shares last traded at $58.29, up 9.16% over the past month. September is a supplemental month: the board declared a $0.30 per share supplemental dividend payable in September, its 20th consecutive quarterly supplemental, with a payment date of September 28, 2026.
The engine here is realized gains funneled into supplementals. Main Street booked $33 million of net realized gains in Q2, and management flagged the potential for another significant supplemental dividend payable in December 2026. Q4 regular monthly dividends were declared at $0.265 per share, a 3.9% increase from Q4 2025. Risk: dividend income from portfolio companies fell $10.4 million year over year, and non-accruals sit at 1.1% of the total investment.
Agree Realty (NYSE: ADC)
Agree Realty (NYSE:ADC) is a net lease retail REIT that pays monthly. The most recent declared dividend is $0.267 per share, representing a 4.3% year-over-year increase, with an ex-dividend date of August 31, 2026 and a September 15, 2026 payment date. Shares closed at $73.87.
The pitch is a fortress portfolio buying hand over fist. Agree posted $501.70 million of Q2 acquisitions across 102 properties at a 7.0% weighted-average cap rate, with portfolio occupancy at 99.8% and 73.2% investment-grade tenant ABR. Management raised 2026 AFFO guidance to $4.57 to $4.59. Risk: interest expense expanded to $40.3 million from $32.3 million, and the stock has fallen 7.59% over the past month.
STAG Industrial (NYSE: STAG)
STAG Industrial (NYSE:STAG) is a single-tenant industrial REIT that historically paid monthly. Investors need to know about a schedule change: the latest declarations show a quarterly frequency of $0.3875 per share, with the next payment dated October 15, 2026. Prior 2025 payments ran monthly at $0.124167 per share. Shares closed at $36.67.
Fundamentals remain solid. Q2 core FFO grew 3.2% year over year to $0.65 per share, Same Store Cash NOI expanded 3.4%, and cash rent change on new leases hit 19.8%. STAG has addressed 91.7% of 2026 leasing at a 20.5% cash rent uplift. CEO Bill Crooker cited "stabilizing industrial fundamentals". Risk: the shift to a quarterly cadence removes the monthly-pay appeal for income seekers, and shares are down 11.21% over the past month.
EPR Properties (NYSE: EPR)
EPR Properties (NYSE:EPR) is an experiential net lease REIT paying $0.31 monthly, up from $0.295 previously, with an ex-dividend date of August 31, 2026 and a September 15, 2026 payment. The dividend yield sits at 5.94%, the highest of this group, and shares are up 25.61% year to date.
The coverage math is the story: CFO Mark Peterson said the "common dividend continues to be very well covered with an AFFO payout ratio of 65% for the second quarter". Q2 AFFO per share rose 15.3%, the portfolio is 99% leased or operated, and rent coverage held at two times. Management raised FFOAA guidance to $5.41 to $5.57. Risk: tenant concentration. Topgolf and AMC are the largest tenants, and near-term debt maturities loom.
Positioning across these five delivers income diversified across net lease retail, industrial, experiential, and lower middle market private credit, with every check landing on a different day of the month (we rounded up seven of our favorite every-30-days payers in a free report here). That is exactly the kind of cash-flow architecture that lets an investor sit through a historically choppy September without flinching.
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