Default Rate

What Is a Default Rate?

A default rate measures how much debt in a group has failed to be repaid as agreed. Banks, lenders, and bond analysts use it to track credit risk across a whole portfolio of loans or bonds rather than for a single borrower. A debt is generally treated as in default when the borrower misses scheduled payments for a sustained period or breaks another promise in the loan agreement, known as a covenant.

How It Is Calculated

The default rate is usually expressed as a percentage of the total debt outstanding at the start of the period:

Default rate = Debt that defaulted during the period ÷ Total debt outstanding at the start of the period

Some analysts count the number of borrowers instead of the dollar amount, so the same portfolio can produce different figures depending on the method. Comparing published numbers requires checking which basis was used.

Why It Matters to Investors

Default rates help lenders decide how much to charge, how much to set aside for expected losses, and how cautiously to lend. For bond investors, a rising default rate can signal weakening conditions in a market or sector. Defaults are more common among issuers with lower credit ratings, which is why the high-yield bond market is watched closely.

A default does not always mean a total loss. Lenders may recover part of the amount owed through collateral or a bankruptcy process, a share known as the recovery rate. Investors therefore look at default rates alongside recovery assumptions to estimate actual losses. Late payments, or delinquency, often come before a default and can serve as an early warning. Some loan contracts also specify a default interest rate, a higher rate charged to a borrower who is in default.