DAC7 税号核对：平台如何验证卖家身份
更新于 2026-10-06
按 DAC7 的规定，平台运营商必须收集每个卖家的税号，并执行尽调程序以确保所报信息准确。欧委会提供免费的 TIN 核查服务，并公布每个成员国的 TIN 格式规则，供平台核验使用。TIN 校验不过并不会免除报告义务：平台会先报告其掌握的信息，再向卖家索要更正后的资料。卖家可以在年度交换前查看平台准备报告的数据并要求更正。
不确定这些规则是否适用于你？
DAC7 中的 TIN 核对是什么
DAC7 puts the reporting duty on platforms, not on sellers. The Commission's stated rationale is that platform operators are better placed to collect and verify the necessary information of all sellers operating on a digital platform. Collecting a tax identification number, the TIN, is one part of that data set, next to the seller's name and address and, where applicable, a VAT registration number.
The directive also makes the platform responsible for data quality. Platform operators are responsible for conducting due diligence procedures to ensure the collection and the accuracy of the information reported concerning EU sellers. In practice a platform does not just copy whatever a seller types into a form; it checks the details against official records before they go into the annual report.
平台在哪里核验 TIN
The Commission maintains a TIN checking service that validates the structure of a tax identification number against the format rules of each EU country, free of charge. Member states also run their own online lookup tools, and many operators build their checks on these official sources rather than on commercial databases.
A format check has limits. It confirms a TIN looks like a valid number for that country; it does not confirm the number belongs to the person who submitted it. Some operators go further and compare the TIN against the seller's stated country of residence and legal name as part of identity checks. Whatever checks a platform runs, the due diligence duty stands, and a TIN that cannot be verified does not suspend it.
TIN 对不上会怎样
A failed or missing TIN does not take the seller out of the report. The platform still files what it holds, and gaps in identity data are exactly the kind of thing tax authorities ask about later. Operators typically respond by re-requesting the details from the seller, sometimes more than once, until the record is complete.
The consequences of non-compliance sit with the platform, and member states set their own sanctions. The Commission describes the end state plainly: after continued non-compliance following two reminders from the member state of registration, a platform operator's registration is permanently revoked, and member states can coordinate to block its activity within the EU. Platforms therefore have their own reasons to chase sellers for a usable TIN before the deadline.
卖家该做什么
When your platform asks for a TIN, treat the request as time-sensitive. Late or wrong answers get reported anyway, and fixing a record after the annual exchange is slower than giving the right number up front. Check which country's number the platform wants: for most individuals it is the tax number issued by their country of residence, and a business may also be asked for its VAT registration number.
You are not locked out of the process. Platforms inform reportable sellers of the information before it goes to the tax authorities, so review what they send and ask for a correction if something is off. The annual report itself is due by 31 January of the year after the reportable period, which makes the weeks before that date the cheapest window to get your record right.
核对依据
本文按以下一手资料整理。规则会变化，请在行动前打开原文确认最新版本。
常见问题
DAC7 申报义务里的 TIN 核对是什么？+
TIN 核对是平台对所收集卖家税号做的校验。DAC7 规定运营商有责任执行尽调程序，确保所报信息收集齐全且准确，因此在年度报告之前，平台会按官方格式规则并结合卖家其他资料核验 TIN。
TIN 和 VAT 号是一回事吗？+
不是。TIN 是各国用于所得税的识别号，VAT 号是增值税注册号。DAC7 要求提供 TIN；若卖家已注册 VAT，还要一并提供 VAT 号。VAT 号不能代替 TIN。
我是非欧盟卖家，还需要提供 TIN 吗？+
需要，按你居住国的号码格式提供。平台会收集居住国签发的 TIN 及地址。非欧盟卖家与欧盟卖家一样出现在 DAC7 报告里，区别只在号码由哪个国家签发，而不是要不要收集。
平台为什么现在向我要税号？+
因为平台有法定收集义务。无论你的交易刚越过应报告门槛，还是平台从一开始就向所有卖家收集资料，索取 TIN 都是 DAC7 尽调的一部分。及时提供能让你的记录在 1 月 31 日申报截止前保持完整。
如果我填错了 TIN 会怎样？+
平台可能重新校验并向你索要更正后的资料。无论对错，信息都会被报告，而与税务机关记录对不上的身份信息正是引来后续问询的那种。在申报前修正，成本最低。
我能查看平台报告了我的哪些数据吗？+
可以。平台会在信息报送税务机关之前通知应报告卖家。收到通知后请核对内容，如发现错误，在 1 月 31 日申报截止前要求平台更正。
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