Loss severity is the share of a loan or exposure a lender actually loses after a borrower defaults. If a bank recovers 60 cents on every dollar owed, loss severity is 40 percent; the two figures are mirror images and always sum to 100. In banking the same idea goes by loss given default, or LGD, and it shapes how much capital a bank must hold against a loan and what interest rate the borrower pays to get it.
The metric isolates the depth of a single loss rather than how often losses happen. A lender with a thousand loans tracks two separate numbers: how many will default (frequency) and how much money disappears when one does (severity). Frequency tells you how wide the damage spreads. Severity tells you how deep each hit goes.
Severity can be stated in dollars or as a percentage of the exposure at default. On a $200,000 mortgage where the lender ultimately recovers $130,000, the loss is $70,000, or 35 percent.1S&P Global. Understanding Loss Given Default: A Review of Three Approaches
How to Calculate Loss Severity
The formula is simple. Take the exposure at the time of default, subtract whatever the lender recovers net of costs, and divide by the original exposure.
Picture a $100,000 commercial loan secured by equipment. The borrower defaults. The bank seizes the collateral and sells it at auction for $65,000, but spends $5,000 on legal fees and sale costs along the way. Net recovery is $60,000. Net loss is $40,000. Divide by the $100,000 exposure and loss severity is 40 percent.2Urban Institute. Loss Severity on Residential Mortgages: Evidence from Freddie Mac’s Newest Data
Discounting Recoveries Over Time
A dollar collected three years after default is worth less than a dollar collected next month. The workout LGD method handles this by discounting every recovery cash flow back to the date of default. If a bank collects payments over a multi-year workout, each payment is shrunk by a discount rate before it counts toward recovery. Common choices include the original contract rate, a risk-free government bond rate, or a market-based rate tied to distressed debt. The choice is not neutral: a higher discount rate shrinks the present value of recoveries and pushes severity upward.
What Drives Loss Severity Higher or Lower
Collateral Quality and Liquidity
The biggest single factor is whether the loan is secured and how quickly the collateral turns into cash. Cash and marketable securities can be liquidated in days, which keeps severity low. Real estate takes months or years. Specialized industrial equipment may attract only a handful of buyers willing to pay well below replacement cost. The longer an asset sits on the market, the more carrying costs accumulate and eat into recovery.
Market Conditions at the Time of Sale
Recovery depends on when the asset reaches the market. Selling a foreclosed home during a housing downturn can shave 20 percent or more off its appraised value compared with a healthy market, and that discount flows straight into the lender’s loss. Distressed debt markets behave the same way: in recessions, defaulted assets flood the market just as buyers pull back, compressing recoveries across the board.
Seniority in the Capital Structure
Where a loan or bond sits in the repayment hierarchy has a dramatic effect on recovery. Senior secured lenders get paid first from liquidation proceeds, so their severity is structurally lower. Subordinated and unsecured creditors absorb whatever is left, which frequently approaches zero in a severe default. Long-run recovery data covering nearly four decades shows the pattern clearly:
- First-lien term loans: roughly 71 percent average recovery, about 29 percent severity
- Senior unsecured bonds: roughly 45 percent recovery, about 55 percent severity
- Senior subordinated bonds: roughly 30 percent recovery, about 70 percent severity
- All other subordinated bonds: roughly 23 percent recovery, about 77 percent severity
Each step down the priority ladder costs creditors another 10 to 15 cents on the dollar.3S&P Global Ratings. Default, Transition, and Recovery: U.S. Recovery Study: Supportive Markets Boost Loan Recoveries
Legal Costs and Foreclosure Timelines
Every dollar a lender spends chasing recovery is a dollar subtracted from the net proceeds. Routine, uncontested foreclosures may cost only a few thousand dollars in legal fees. Contested or complex cases cost significantly more. States requiring judicial foreclosure stretch the timeline out much longer than those allowing non-judicial sales, and that gap translates directly into higher severity. In the slowest judicial states a foreclosure can take years, during which the lender absorbs property taxes, insurance, maintenance, and lost interest on a non-performing asset. Those carrying costs alone can add tens of thousands of dollars to the loss on a single property.
Unsecured Debt
Unsecured consumer debt such as credit card balances and personal loans produces the worst severity because there is no collateral at all. The lender’s only option is pursuing the borrower’s general assets through collection, which usually yields little. Unsecured exposures average roughly 38 percent recovery, meaning lenders lose about 62 cents on the dollar. Second-lien and unsecured instruments also show extreme variation: some are repaid in full, others return nothing, and very few land in between.3S&P Global Ratings. Default, Transition, and Recovery: U.S. Recovery Study: Supportive Markets Boost Loan Recoveries
Credit Enhancements That Reduce Loss Severity
Private Mortgage Insurance
When a borrower puts less than 20 percent down on a home, the lender or whoever holds the credit risk typically requires private mortgage insurance (PMI), which absorbs a portion of any loss. Analysis of Fannie Mae loans from 1999 through early 2018 found PMI reduced loss severity by about 22 percentage points on high loan-to-value mortgages, cutting it from 53 percent to 31 percent. For a 95 percent LTV mortgage, standard PMI coverage reduces the lender’s exposure by 30 percent, bringing the effective risk level closer to a loan with a 66.5 percent LTV ratio.4Urban Institute. Private Mortgage Insurance Reduces the Severity of Losses for Those Holding Risk
Credit Default Swaps
Banks can also transfer severity risk through credit default swaps. The lender pays an annual premium to a protection seller. If the borrower defaults, the protection seller covers the loss, either by taking delivery of the defaulted asset at face value (physical settlement) or by paying the gap between face value and market value in cash (cash settlement). The premium itself is calculated using expected default probability and recovery rate, so loss severity is a direct input to pricing. The trade-off is that the lender swaps credit risk for counterparty risk: if the protection seller cannot pay, the hedge fails.
Why Loss Severity Matters: Expected Loss, Capital, and Pricing
Severity does not operate in isolation. Banks plug it into a broader expected loss equation defined by the Basel framework: probability of default, multiplied by loss given default, multiplied by exposure at default.5Bank for International Settlements. CRE35 – IRB Approach: Treatment of Expected Losses and Provisions
In plain terms: take the chance that a borrower will default, multiply it by the share you expect to lose if they do, and multiply that by the outstanding balance. A $500,000 loan with a 2 percent probability of default and a projected 40 percent severity produces an expected loss of $4,000. That number feeds directly into how much capital the bank sets aside and what it charges in interest. Getting the severity component wrong by a few percentage points can distort the whole calculation across thousands of loans.
Regulatory capital rules reinforce the point. Banks using the advanced internal ratings-based approach estimate their own LGD for each asset class, but Basel III imposes minimum LGD floors to block overly optimistic assumptions: 25 percent for corporate exposures, 5 percent for residential mortgages, and 50 percent for qualifying revolving retail exposures like credit cards.6Bank for International Settlements. High-Level Summary of Basel III Reforms Accounting rules add another layer. The Current Expected Credit Losses (CECL) methodology requires financial institutions to estimate lifetime credit losses on loans and held-to-maturity debt at origination, measured as the gap between carrying value and the amount actually expected to be collected, with inputs from historical experience, current conditions, and reasonable forecasts.7Board of Governors of the Federal Reserve System. Frequently Asked Questions on the New Accounting Standard on Financial Instruments – Credit Losses Every quarter, severity assumptions move the loss allowance, which moves reported earnings and capital ratios in real time.
How It Shows Up in Your Interest Rate
All of this ultimately lands on the borrower’s desk. When a lender prices a new loan, it builds in an expected loss component: probability of default, times projected severity, times exposure. A loan with projected severity of 50 percent commands a materially higher risk premium than one at 10 percent. The lender needs that extra spread to cover statistically expected losses and still earn a return above its cost of capital.
That is why secured loans carry lower rates than unsecured ones, why a mortgage with 20 percent down costs less than one with 5 percent down, and why subordinated debt pays higher yields than senior debt. The severity gap between those products is not small, and lenders price accordingly.
Tax Treatment of Realized Losses
Once a loss is realized, the tax code offers some relief. A lender can deduct a bad debt in the year it becomes worthless, but only if the amount was previously included in income or represents cash that was lent out. Business bad debts, including losses on loans made in the ordinary course of business, can be deducted in full or in part. Non-business bad debts must be completely worthless to qualify and are treated as short-term capital losses.8Internal Revenue Service. Topic No. 453, Bad Debt Deduction
Timing matters. The deduction is taken in the tax year the debt becomes worthless, not when the default first occurs. Demonstrating worthlessness means showing you took reasonable steps to collect and that further efforts would be futile. The after-tax impact depends on the institution’s marginal rate and whether the loss creates a net operating loss that carries forward.