A business development company lends to middle-market borrowers and passes almost all the income back to shareholders. Owned well, it delivers a high, covered yield. Owned badly, it prints a yield that dissolves the first time the credit cycle turns.
A BDC is, in substance, a pass-through credit fund with a public listing. Regulated to distribute the bulk of its taxable income, it offers a yield well above ordinary equities — but the underwriting, leverage, and portfolio concentration behind that yield are what decide whether it is durable. The framework below is a six-point screen: pass all six, and the BDC is investable; fail one, and it usually isn't.
01The six-point framework
For every BDC, work through the same six tests. Present the current data, a pass or fail against the threshold, and a short note on quality or concern.
Dividend yield
Threshold ≥ 8%Yield = Annual DPS ÷ Share Price
The entry-level yield test. A BDC below 8% is usually being priced as a premium credit franchise and rarely compensates for the underlying risk. A BDC well above 10% — particularly one whose yield has risen because the price fell — demands closer scrutiny of the other five tests before the yield is treated as real.
Dividend growth
Consistent over 5–10 yearsDPS trajectory — flag cuts, freezes, special top-ups
Plot dividends per share across at least the last five years, preferably ten. Look for a stable or rising base dividend. Distinguish the base dividend from supplemental "special" distributions — those come and go; the base is what pays the bill. A cut or freeze in the base is a material signal about either underwriting or leverage.
NAV per share trend
Rising or stable over 5–10 yearsNet Asset Value ÷ Shares Outstanding, charted by year
NAV per share is the scorecard of the whole franchise. A BDC that pays an attractive dividend while its NAV per share erodes year after year is returning capital, not compounding it. Identify any multi-year NAV decline and read the annual letters — sometimes it reflects a single cycle, often it reflects structural under-pricing of credit risk.
Credit quality & portfolio risk
Senior secured ≥ 90% · Non-accruals < 2% · No position > 5%Three sub-tests sit inside this one. First, the share of the portfolio in first-lien or senior secured loans should be at least 90% — these sit at the top of the capital stack and recover more in default. Second, the non-accrual rate and annualised loss rate should run below 2% through the cycle. Third, single-position concentration should stay below 5% of total assets; a blow-up in one borrower should inconvenience the portfolio, not break it.
Dividend sustainability
NII coverage > 1.0×Coverage = Net Investment Income per Share ÷ Dividend per Share
Net investment income — interest income less financing and operating costs — is what actually funds the dividend. A coverage ratio at or above 1.0× means the base dividend is earned, not borrowed or returned from capital. Below 1.0× for more than a quarter or two almost always precedes a cut. Special supplemental distributions should be excluded from this test; the question is whether the base dividend stands on its own.
Financial strength & leverage
Debt-to-equity ≤ 1.5×D/E = Total Debt ÷ Total Equity
BDCs are permitted to run meaningful leverage, and many do. A debt-to-equity ratio at or below 1.5× keeps the franchise inside a tolerable risk envelope. Above 2.0× the NAV becomes very sensitive to marking cycles; a modest drop in asset values can pressure the balance sheet into forced action. Complement this with the maturity schedule — short-dated, concentrated maturities in a rising-rate window are a separate and important risk.
02Reading the results
Two common patterns show up when the six tests are applied:
- High-quality franchise, fully priced. Strong senior-secured share, low non-accruals, stable NAV, NII coverage comfortably above 1×, moderate leverage — but a yield near or below the 8% floor. The right action is to add to the watchlist and wait for a wider discount to NAV or a broader credit-cycle sell-off.
- Attractive yield, thin coverage. Headline yield of 10% or more, but coverage near 1× or below, single-name concentrations above 5%, and a second-lien share creeping higher. The right action is usually to pass — the yield is a forecast of a cut, not a payment schedule.
NAV per share declining for three years or more, non-accrual rate rising above 3%, NII coverage below 1.0× for two consecutive quarters, or a portfolio in which second-lien and equity exposures collectively exceed 15% — any of these is usually enough to walk away, regardless of the printed yield.
03Valuation discipline
BDCs are typically valued against net asset value. A useful working framework:
- Discount to NAV. The preferred entry — buying a portfolio of senior-secured loans for less than their carried value, with the income stream attached.
- Premium to NAV up to ~10%. Acceptable only when all six framework tests are passed, NAV has been rising, and dividend coverage is above 1.1×. A quality franchise earns a modest premium; beyond that, the margin of safety erodes.
- Premium above ~20%. Almost never worth paying. The embedded credit risk does not support a large premium over the underlying book.
04Summary scorecard
| Criterion | Threshold | Pass / Fail |
|---|---|---|
| Dividend yield | ≥ 8% | — |
| Dividend growth | Consistent, 5–10y | — |
| NAV per share trend | Stable / rising | — |
| Senior secured exposure | ≥ 90% | — |
| Non-accrual rate | < 2% | — |
| Single-position concentration | < 5% of assets | — |
| NII dividend coverage | > 1.0× | — |
| Debt-to-equity | ≤ 1.5× | — |
| Price vs. NAV | Discount / modest premium | — |
Four verdicts follow:
- Buy — passes all six framework tests and trades at a discount or a modest premium to NAV.
- Watch — passes every test except price; monitor for a wider discount.
- Avoid — fails one or more of credit quality, NAV trend, coverage, or leverage thresholds.
- Sell / do not hold — multiple failures, or a yield that is mathematically uncovered by NII.
BDCs are credit funds dressed as equities. The analysis is primarily about underwriting, leverage, and coverage — not narrative. When the six-point framework and the price are aligned, the BDC is a useful piece of an income portfolio. When they are not, a high yield is a warning, not an invitation.
Six rules for buying a BDC
- Require an 8% or higher yield — but never treat a headline yield as real until the other five tests pass.
- Dividend growth and NAV per share should point in the same direction: upward, or at minimum stable.
- Demand at least 90% senior-secured exposure and non-accruals below 2%.
- No single borrower should exceed 5% of total assets.
- NII coverage above 1.0× is non-negotiable. A dividend not earned is a dividend not paid for long.
- Cap leverage at debt-to-equity of 1.5×. Above that, the balance sheet is priced for a benign credit cycle that rarely lasts.