北大经院工作坊第1357场| VAT Credits, Supplier Choice, and Market Access
（发展与公共财政工作坊）
主讲人：刘宇（复旦大学经济学院公共经济系副教授）
参与老师：
（北大经院）刘冲、吴群峰、曹光宇、年永威、施新政
（北大国发）李力行、席天扬、王轩、徐化愚、刘诗尧、黄清扬
（北大光华）张晓波、仇心诚
时间：2026年11月6日（周五）10:30-12:00
地点：北京大学国家发展研究院承泽园校区344教室
主讲人简介：
刘宇现任复旦大学经济学院公共经济系副教授，主要研究税收政策对企业行为的影响及其作用机制。研究成果发表于 Journal of International Economics、Journal of Public Economics、Journal of Development Economics、Tax Policy and the Economy 等国际学术期刊，现担任 International Tax and Public Finance 副主编（Associate Editor）。
摘要：
We study how VAT invoice terms shape supplier choice and trading networks, combining a registry-based survey of 2,859 Chinese firms with administrative buyer–seller records. In a hypothetical transaction with equal pretax prices, 71.5 percent of general-taxpayer respondents prefer a 13-percent VAT invoice to a deductible 3-percent invoice, despite identical costs net of input-tax credits. This preference persists among respondents who correctly calculate both net costs, with larger input credits and procurement rules emerging as the leading stated reasons. In administrative data, firms transitioning from the small-scale to the standard VAT regime increase their purchase share from general taxpayers by approximately 19 percentage points and their sales share to general taxpayers by 10 percentage points, relative to firms remaining in the small-scale regime. Purchases increase within existing general-taxpayer supplier relationships, while the active network of general-taxpayer clients expands. Firms with extensive prior use of deductible invoices also increase sales within existing general-taxpayer client relationships. Together, these findings suggest that the perceived value of input-tax credits and procurement practices shape trading relationships and market access beyond what statutory creditability alone would predict.
供稿单位：科研与博士后办公室
供稿人：刘冲 张紫琪
