Expected loss calculator
Every credit exposure carries a loss you can price before it happens: probability of default times loss given default times exposure. This calculator computes that expected loss, the loss rate, and the allowance buffer a lender would hold against it.
| Term | Value |
|---|---|
| Exposure at default | $5,000,000 |
| Probability of default | 1.00% |
| Loss given default | 40.0% |
| Expected loss | $20,000 |
| Buffered allowance | $30,000 |
CECL-style single-scenario allowance. Real models use lifetime PD term structures and macroeconomic overlays.
EL = PD × LGD × EAD · The regulatory and accounting building block.
EL / EAD · PD × LGD, independent of size.
buffer × EL · Covers estimation error and migration.
A clear path from inputs to results.
Every credit exposure carries a loss you can price before it happens: probability of default times loss given default times exposure. This calculator computes that expected loss, the loss rate, and the allowance buffer a lender would hold against it.
How to use
- Enter the exposure at default.
- Set the probability of default.
- Set the loss given default.
- Read the expected loss and the buffered allowance.
The formula
Reference: Basel/IFRS 9/CECL expected-loss framework.
Worked example
$5M exposure, 1% PD, 40% LGD
- Exposure $5,000,000.
- PD 1.0%.
- LGD 40%.
- 1
Loss rate: 1% × 40% = 0.4%.
- 2
Expected loss: 5,000,000 × 0.004 = $20,000.
- 3
Buffered allowance at 1.5×: $30,000.
Expected loss $20,000 · loss rate 0.40% · allowance $30,000.
Interpreting the result
Expected loss is a pricing input, not a surprise. The buffer covers estimation error and rating migration; unexpected loss beyond that is what capital is held against.
Assumptions & limitations
- Single exposure, single period.
- PD and LGD are given, not modelled.
- No discounting to present value.
- No correlation or portfolio effects.
Frequently asked questions
What is LGD?
One minus the recovery rate on the exposure at default.
Does it apply to retail loans?
Yes, with portfolio-level PD and LGD rather than single exposures.
Is this the same as the allowance?
Expected loss is the point estimate; the allowance adds a buffer and macro overlays.
Methodology last reviewed 2026-10-21. Results are informational and not financial or engineering advice — see our disclaimer.