Net operating income is the operating starting point
NOI is generally used to describe property income after operating expenses and before debt service. Its usefulness depends on the quality of the income and expense assumptions used to create it.
Look at whether the number reflects current operations, a trailing period, a budget, or a future plan. These may all be relevant, but they are not interchangeable.
DSCR compares income with debt service
Debt service coverage ratio compares annual property income with annual principal-and-interest debt service. It helps make the relationship between the property’s operating cash flow and the assumed debt visible.
The result will change when the income, rate, amortization, or debt amount changes. That is why a cautious second view can be more helpful than treating one result as a final answer.
Debt yield shows another view of income and debt
Debt yield compares annual NOI with a contemplated debt amount. It does not rely on a rate or amortization input, which makes it a separate way to consider the relationship between property income and leverage.
It should be read alongside the rest of the capital picture. It does not replace a view of debt service, cash invested, property condition, or the assumptions behind the NOI.
Use the metrics to ask the next question
If a result changes materially when you adjust one input, that input deserves attention. The next step may be verifying the income, revisiting the debt assumption, reviewing the cash contribution, or understanding the capital needs that sit outside the basic calculation.
These are educational relationships, not financing criteria, property valuations, or investment recommendations. Use them to organize a more thoughtful next conversation.