A purchase subsidized by government is not necessarily a purchase caused by government. Consumption support can bring spending forward, change the product purchased, shift spending between categories, or finance an additional purchase. The policy's economic effect depends on which response predominates and on the cost of delivering it.
China's January 2025 notice expanding equipment renewal and consumer-goods replacement support, NDRC and Ministry of Finance document 13, provides a specific design to examine. It included eligible appliance purchases, digital products subject to price and subsidy limits, and vehicle replacement conditions. The rules in this brief refer to that 2025 notice. They are not a statement of eligibility for a purchase made under a later program.
Separate the transaction from the counterfactual
Suppose a household would have bought a 4,000-renminbi appliance without support. A hypothetical 600-renminbi subsidy reduces the household's payment to 3,400 renminbi if the transaction price is unchanged. The supported sale remains 4,000 renminbi, but additional appliance demand is zero in this counterfactual. The household can use the saving for another purchase, saving, or debt repayment.
A different household might buy only because support makes replacement affordable. Its purchase is additional within the period, but some of the spending may have occurred later anyway. The distinction between newly induced spending and spending brought forward requires a longer horizon than the subsidy window.
An aggregate report of supported sales combines these cases. Dividing sales by the subsidy budget produces a transaction-to-support ratio. Calling that ratio a fiscal multiplier or an estimate of additional spending would assign a causal meaning the arithmetic cannot provide.
The relevant measure is spending relative to a credible path without the program. That path should include expected replacement, income, prices, credit, and other policies. A comparison with the immediately preceding month can be misleading if households delayed purchases while awaiting the subsidy or if the categories have strong seasonal patterns.
Product substitution and price incidence matter
Support can encourage a higher-efficiency product, a more expensive model, or a purchase from a participating retailer. Those responses can advance a specific policy objective while generating little increase in total household expenditure. Evaluation should report them separately rather than treat every change in the sales mix as additional consumption.
The division of the subsidy between buyer and seller also requires evidence. If a product's transaction price rises when support becomes available, part of the benefit may accrue to suppliers. Posted list prices are not sufficient: discounts, model changes, bundled services, and delivery charges can alter the effective price. A matched-product comparison should use prices actually paid for comparable goods.
Supply capacity affects the response as well. When eligible products are readily available, additional demand may raise quantities. When supply is constrained, more of the support can appear in prices or delivery delays. The policy's incidence can change over time as inventories and production adjust.
What a defensible evaluation would report
The central results should distinguish supported sales, incremental purchases, timing shifts, and changes in product characteristics. Household data can identify distribution and financing constraints; transaction data can test pricing and product substitution. A suitable comparison group must account for differences in eligibility and preexisting replacement demand.
Policy design can improve evaluation by preserving transaction dates, product identifiers, subsidy amounts, and the treatment of returned goods while protecting personal information. Where participation is voluntary, recipients should not simply be compared with nonrecipients without addressing selection. Those able and willing to buy may differ systematically before the program begins.
The 2025 notice illustrates why detailed eligibility and caps belong in the analysis. They define the incentive, but the economic return depends on behavior beyond the supported transaction. A useful assessment identifies the additional consumption achieved, the households reached, and the later adjustment, rather than presenting the largest gross sales total as the measure of policy effectiveness.