Why the socialist firm never fears bankruptcy — and why that manufactures the queue. When the state always bails out the loser, every firm survives, efficiency falls, and demand outruns supply into chronic shortage.
source János Kornai, Economics of Shortage (1980) & “The Soft Budget Constraint,” Kyklos (1986) — the Hungarian economist’s account of hoarding and chronic shortage. · ROOM: THE STATE — the budget constraint as the discipline the plan removed.
János Kornai watched Hungary’s socialist economy and asked a plain question: what disciplines a firm? In a market, the answer is the budget constraint — cover your costs from your revenue, or go bankrupt and exit.
In Economics of Shortage (1980) he named the socialist firm’s condition the soft budget constraint: the state absorbs the deficit through subsidies, soft credit, and price relief. The firm never fears bankruptcy — so it never has to stop.
A HARD budget constraint: a firm survives only if revenue ≥ cost — otherwise it exits. The threat is real, so managers economise and only efficient firms persist.
A SOFT budget constraint: the state covers any deficit, so every firm survives on a bailout S = Σ max(0, cost − revenue). Loss makes no difference to survival, so no firm restrains its appetite for inputs. The engine (centre) runs both regimes on the same deterministic firm set.
The idea outlived the USSR. The SBC became a founding concept of transition economics — the syndrome to break when moving from plan to market.
It generalised far past socialism: modern “too big to fail” bank bailouts are a soft budget constraint; so is the perennially rescued state enterprise. It sits inside principal–agent theory, the same incentive-pathology thread as gobernet and the-ratchet-effect.
A fixed, deterministic set of N firms. Each has a productivity π = revenue / cost and an input demand (its slice of the shared supply). The supply pool is sized to the efficient plan.
HARD: survive iff π ≥ 1 · SOFT: all survive, S = Σ deficits
Firm set is generated by a fixed-seed PRNG — no randomness at load. Productivity π<1 means the firm loses money; the state either lets it exit (hard) or pays its deficit (soft).
Same firms, two budget rules. HARD removes every π<1 firm; the survivors’ input demand fits the supply. SOFT keeps everyone on subsidy S; their combined demand overruns supply.
Under HARD budgets the loss-makers exit: survivors are the efficient firms (average π rises), the subsidy bill is zero, and aggregate input demand stays within supply — no shortage.
Under SOFT budgets nothing exits: the subsidy S > 0 funds the losers, average productivity falls to the whole-population mean, and because no firm fears loss the combined input demand exceeds supply — a positive shortage, the queue. The constraint meant to relieve hardship manufactures the shortage.
Even-handed: hard budgets have real human costs too. Exit is not costless — a bankrupt firm means lost jobs. Kornai’s claim is not that hardness is painless; it is that softness is not free either — it is paid in lower efficiency and a standing shortage. Ties the-potemkin-village (why the numbers lied).
“Subsidising firms just protects jobs — no downside.” Cut. The subsidy is strictly positive and it keeps the inefficient alive; average productivity falls and their input demand crowds the supply. It funds losers and manufactures shortage — the cost is real, just hidden in the queue.
“Softening the budget constraint raises output.” Examined. It raises the number of surviving firms, not welfare: the extra output is loss-making, paid for by subsidy, and the demand it adds is exactly what tips supply into shortage.
Assert the planner’s hope: “bailouts are costless and softening the constraint raises output with no downside.” The witness recomputes the ledger against that claim.
The witness recomputes: the subsidy bill S is strictly > 0, average efficiency falls, and input demand exceeds supply, so the shortage rises. The claim contradicts the ledger and the witness turns red.