Altman Z-score

A 1968 discriminant model combining five accounting ratios into one distress score. Above 2.99 is the safe zone, below 1.81 the distress zone. Built on US manufacturers and a screen rather than a rating.

Where Altman Z-score is explained in depth

The definition above is the short version. These pages put it to work, in the order they use it most:

Calculators that compute it

The whole glossary

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