身边的经济学·社会常识英语30篇（8）

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基础设施支出的批次锚定型财政乘数估算

Economists now anchor fiscal multiplier estimates to empirically validated spending batches rather than theoretical models.
Each batch covers one fiscal quarter and includes procurement timelines, local hiring records, and subcontractor payments.
Multipliers rise significantly when batches show over 70% local sourcing and under 12% administrative leakage.
Central banks cross-check these batches against regional credit flow and tax revenue data before policy endorsement.
This anchoring prevents overestimation of stimulus impact during politically pressured budget cycles.
It also enables real-time recalibration when subsequent batches reveal unexpected demand spillovers.
Policymakers require three aligned batches before authorizing phase-two funding for large projects.
Independent auditors verify batch integrity using blockchain-secured procurement ledgers.
The approach treats infrastructure investment as a measurable economic process, not just political expenditure.
Such evidence-based multipliers strengthen parliamentary scrutiny of capital budget allocations.