Huaian Development Zone: Data Plus Models Make Tax Risks Visible

In early 2025 the tax bureau of Huaian Economic and Technological Development Zone set up a risk-control system built on three steps: gather data, build models, respond by tier. External tax-related data used to arrive late and incomplete, and coordination between internal divisions was weak. The bureau now works with more than ten outside bodies, among them the finance, natural resources, land reserve and market regulation authorities, under a data transfer list and unified collection standards, while linking its collection, legal affairs and revenue-source management divisions internally. It has built 66 monitoring models across seven industries, including early warnings for abnormal construction VAT and linked analysis of land-transfer taxes and fees. One model on excessive input VAT credits claimed by advanced manufacturing exporters flagged two companies with filing problems and recovered over 1 million yuan. Risks are handled in three tiers, red, yellow and blue: blue cases are settled directly by the relevant division, yellow ones go to revenue-source teams for verification and red ones to specialist response units. Cross-checking housing and land information from the land reserve centre against property tax and urban land-use tax filings identified 20 firms that had underpaid, and after guidance they paid a total of 3.1075 million yuan. Tax revenue added through risk response grew 11.7 percent year on year in 2025.