The news: Chinese tax authorities have ordered major ecommerce platforms—including Amazon, Temu, and Shein—to hand over Chinese sellers’ Q3 sales data as part of a broader push to crack down on tax evasion among merchants running cross-border businesses, per Bloomberg.

• The data aims to provide regulators with a more accurate picture of online exporters’ sales, which are often higher than the figures they report to tax bureaus.
• Sellers that are forced to amend their filings to match platform data could owe up to 13% in value-added taxes (VAT), plus back taxes.

The context: Chinese tax law requires companies with annual sales above 5 million yuan ($700,000) to pay up to 13% in VAT. While merchants that provide customs documents and other export proof are exempt, most online sellers struggle to qualify.

The effort dovetails with Beijing’s broader push to recover uncollected tax revenues, including a recent campaign targeting citizens’ overseas income.

Our take: Chinese sellers may need a new playbook to stay competitive on foreign marketplaces as the US and other countries move to tighten de minimis exemptions that once gave them an edge over domestic sellers.

That shift could have a significant impact on Amazon and other platforms, given that Chinese sellers account for more than half of Amazon’s global active seller base, according to Marketplace Pulse.

If Chinese sellers pull back, platforms could see reduced selection; if they raise prices, they could see sales soften; and if they stay, thinner margins could curb their ad spending, reshaping marketplace economics.