MENTAL MODEL · M4645

Soft Budget Constraint

BusinessHigh supportEconomics

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Updated 2026-08-02

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INTRODUCTION

English translation pending.

CORE DEFINITION

Introduced by the economist Janos Kornai to explain behavior in socialist economies, a soft budget constraint exists when a loss-making entity expects its parent, bank, or government to cover the deficit through subsidies, debt relief, or new capital. Because the penalty for failure is removed, the entity expands and takes risk it would otherwise avoid. The concept now describes bailouts, zombie firms, and family arrangements that absorb the cost of someone else's overspending.

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

- Check the backstop: ask whether someone will absorb the loss if the plan fails - Harden the limit: remove the rescue expectation so costs fall where the decisions are made - Watch the expansion: expect overreach wherever failure carries no real penalty

anchor

Anchor fast decisions

If losses will be covered, the expected cost of risky or wasteful spending falls for the decision maker. Rational behavior then shifts toward expansion and risk-taking, since the downside is externalized. The dynamic persists as long as the rescuer cannot credibly commit to letting the entity fail.

MINIMUM ACTION

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Practice this model in one real situation:

When analyzing state firms, local financing vehicles, or zombie companies, look for implicit guarantees. 2. Ask what rescue expectation the managers hold and who would pay. 3. Reform by hardening the constraint so losses cannot be passed upward. 4. Apply the same test to family or departmental arrangements that absorb overspending.

Check to track your progress (stored locally)

Learning progress0%

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Source support: Explicit

link
en.wikipedia.orghttps://en.wikipedia.org/wiki/Budget_constraintZH · Explicit
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