BDC Loan Returns: Yield, IRR, Fees and Credit Losses

Private Credit Foundations, Lesson 6. Estimated time: 16 minutes.

A Business Development Company (BDC) loan can boast a 10% coupon and still produce a lousy return.

It can also earn more than 10% without the borrower ever paying a higher coupon. The difference lives in purchase price, fees, timing, Payment-in-Kind (PIK) interest, prepayment and, above all, how much principal eventually comes home.

That is why a credit analyst does not stop at yield. The grown-up question is: what cash went out, what cash came back, and when?

What you will learn

By the end of this lesson, you should be able to:

1. distinguish coupon, current yield and Internal Rate of Return (IRR);
2. explain how Original Issue Discount (OID), fees and PIK affect return;
3. identify why a fast repayment can lift IRR but reduce future income;
4. model a recovery without pretending an accounting mark is cash; and
5. separate a loan's gross return from the return earned by a BDC shareholder.

Start with the cash-flow tape

Consider a three-year loan with $100 of face value and a 10% cash coupon. The lender advances $98 because the loan has 2% OID and receives a $1 closing fee. Its net opening cash outflow is therefore $97.

If the borrower pays $10 of cash interest each year and returns $100 at maturity, the lender cash flows are:

The coupon is 10%. First-year cash income divided by the lender's $97 net outlay is about 10.3%. The annual IRR is about 11.2% because it captures the discount, fee, repayment and timing together.

That 11.2% is not magic alpha. It is arithmetic attached to assumptions.

Put the loan on the return bench

The laboratory is deliberately a gross loan-level model. It does not subtract a BDC's borrowing cost, management fee, incentive fee, operating expenses or taxes. It also does not model the price at which an investor buys or sells BDC shares.

Those omissions are not fine print. They are the distance between a portfolio asset's return and a shareholder's return.

Six return levers

1. Coupon is the rent, not the whole property

The coupon applies to a defined principal balance. A 10% coupon on $100 generally produces $10 of annual contractual interest before considering day count, rate resets, floors and other terms.

It says nothing by itself about the price paid for the loan, closing fees, when principal returns or whether the borrower can pay.

2. OID increases yield by reducing the opening outlay

Original Issue Discount means a loan is issued below its face amount. If a lender funds $98 for a $100 claim that later repays at par, the $2 difference adds to return.

BDC filings commonly accrete OID into interest income over the loan's life. If the loan prepays, remaining unaccreted discount may be accelerated into income. If the loan stops accruing, further accretion generally stops under the issuer's policy.

3. Fees need names and clocks

An upfront fee received at closing reduces the lender's net cash outlay. A commitment fee, amendment fee or prepayment premium arrives under different conditions and may be recurring, episodic or never earned.

Do not pour them into one cheerful bucket called “yield.” Identify who paid each fee, when cash arrived and whether the accounting treatment spreads it across periods.

4. PIK can raise income before it raises cash

Payment-in-Kind interest is added to the loan balance instead of paid currently in cash. If a $100 balance earns 2% PIK, the claim can grow by $2 while the lender's bank balance does not.

PIK can be contractually valuable. It can also be a request for patience from a borrower short on cash. Its return exists only if the enlarged claim is collected or sold for value.

5. Prepayment can make IRR look terrific and create a new problem

If the illustrative loan returns $100 plus a $1 prepayment fee after one year, the lender receives $111 after investing $97. The one-year IRR is about 14.4%.

That is a strong realized loan outcome. It also ends the future coupon stream. The BDC must redeploy the cash, perhaps when new loans offer lower spreads. A fast win can create tomorrow morning's reinvestment problem.

6. Recovery overwhelms cosmetic yield

Suppose the same lender receives $10 in Year 1, no cash in Year 2 and recovers only $65 in Year 3. The modeled IRR is about negative 8.9%.

Several years of handsome reported yield can be erased by a principal loss. In credit, return of capital retains veto power over return on capital.

Gross loan IRR is not shareholder return

A BDC sits between the loan and the investor.

From gross portfolio income, subtract or account for:

• the BDC's own interest and financing expense;
• base management and incentive fees;
• operating expenses;
• realized and unrealized credit outcomes;
• taxes in applicable subsidiaries;
• leverage and share issuance or repurchase effects; and
• the investor's purchase price, dividends and eventual sale price.

The U.S. Securities and Exchange Commission warns that BDC fees reduce investor value and that leverage can increase both returns and losses. A portfolio-weighted yield is useful evidence. It is not a shareholder return forecast wearing a necktie.

Test your return instincts

The underwriting checklist

Before accepting a return figure, ask:

1. Is it a coupon, current yield, yield to maturity, IRR or shareholder total return?
2. Which cash flows are included, and on what dates?
3. Are OID and fees paid in cash, accrued or accelerated after repayment?
4. How much income is PIK rather than current cash?
5. Does the exit assume par repayment, a market sale or a recovery?
6. Is the figure gross or net of funding costs, management fees and expenses?
7. Does it describe one asset, the portfolio or the shareholder's actual experience?

If the return cannot survive those questions, it is a slogan with a percentage sign.

Continue learning

Return to The Drift Academy course map or build a fuller borrower-and-BDC scenario in the BDC Loan Economics Calculator.

Then apply the distinction between portfolio yield and shareholder economics in How BDC Dividends Actually Work.

Key Terms

Business Development Company (BDC): A closed-end company that elects BDC status under the Investment Company Act of 1940 and typically invests in private or smaller public businesses.

Internal Rate of Return (IRR): The discount rate that makes the net present value of a series of cash flows equal to zero. It incorporates the amount and timing of modeled cash flows.

Original Issue Discount (OID): The difference created when debt is issued for less than its face value, subject to the applicable accounting and tax treatment.

Payment-in-Kind (PIK): Interest added to a loan balance rather than delivered as current cash.

Net Asset Value (NAV): A BDC's assets minus its liabilities, often expressed per share.

Calculation Notes

The worked examples use annual periods and a conventional periodic IRR calculation. Base case cash flows are -$97, $10, $10 and $110, producing approximately 11.23%. The one-year prepayment case is -$97 and $111, producing approximately 14.43%. The loss case is -$97, $10, $0 and $65, producing approximately negative 8.92%. Values are rounded. Real loans can use irregular dates, changing reference rates, day-count conventions, amortization, floors, delayed draws, non-cash fees and restructurings; those require transaction-level cash flows and an appropriate dated-return method.

Source Notes

The BDC structure, leverage, fee and investor-risk discussion follows the U.S. Securities and Exchange Commission's BDC investor bulletin.

The accounting descriptions are grounded in publicly filed BDC financial-statement policies. A March 31, 2026 SEC filing explains that PIK is added to principal rather than paid in cash; origination and closing fees and OID are accreted over a loan's life; remaining amounts can accelerate when a debt investment prepays; and accretion stops under the stated non-accrual policy. Issuer definitions and accounting policies can differ, so company analysis should always use the applicable current filing.

Disclosure

The return laboratory and worked examples are hypothetical, simplified and provided only to demonstrate financial mechanics. They are not forecasts, quotations, valuations, tax calculations or representations of any actual loan, BDC or security. Outputs depend entirely on user inputs and assumptions and may contain errors or rounding differences.

The Drift is published by Drift Research LLC for informational and educational purposes only. Nothing published by The Drift constitutes personalized investment advice, financial advice, tax advice, accounting advice, legal advice, or a recommendation to buy, sell, or hold any security. The Drift is not a registered investment adviser, broker-dealer, financial planner, or fiduciary. Data and calculations are derived from sources believed reliable and from methods described in the applicable source and calculation notes, but they may contain errors, estimates, rounding differences, or information that has become outdated. Readers should review the original sources and make their own assessment. All investments involve risk, including possible loss of principal. Past performance and hypothetical results do not guarantee future results. Consult qualified professionals before acting.

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