#008930% 是法定基准；协定税率你自己查30% is the statutory default; the treaty rate is yours to verify

W8Ben · 平台让你填税务信息，先算清差多少W8Ben · Before you fill in that tax form, price it

在 YouTube、Patreon、Gumroad 这类美国平台有收入的非美国创作者，都会被要求提交税务信息。不提交的后果是确定的：美国来源的那部分按法定 30% 预扣，而且这笔钱通常不会自动退。提交并正确援引税收协定，预扣率可能大幅下降。 这里把两种情形的差额算出来。30% 是稳定的法定基准，工具直接用；协定税率刻意让你自己查，因为它逐国不同、而且**同一个协定里不同条款的税率也不同**——广告分成通常走特许权使用费条款，提供服务走的是另一条，商品销售可能根本不算美国来源。填表时要写的正是条款号，写错等于援引不成立，那比不填更麻烦。 还有一条很多人第二年才发现：表格有有效期，到期会自动回到最高预扣档，而平台不一定显著提醒。$2 解锁逐字段填写指导、各平台提交入口的差异、以及这笔预扣在你本国申报时怎么抵免。Non-US creators earning on YouTube, Patreon, Gumroad and similar platforms are all asked for tax information. Not providing it has a definite consequence: the US-sourced portion is withheld at the statutory 30%, and that money generally doesn't come back on its own. Providing it and correctly claiming a treaty benefit can reduce the rate substantially. This computes the difference. The 30% is a stable statutory baseline, so the tool uses it directly; the treaty rate is deliberately yours to look up, because it differs by country and — crucially — by article within the same treaty. Ad revenue usually falls under royalties, services under a different article, and goods sales may not be US-sourced at all. The form asks for the article number, and citing the wrong one is worse than not claiming at all. And one people discover a year later: these forms expire, and on expiry the rate reverts to the maximum without a prominent warning. $2 unlocks field-by-field guidance, how submission differs by platform, and how the withholding is credited in your home filing.

本工具做金额测算与流程说明，不是税务或法律意见。30% 为美国对非居民的法定预扣基准；具体税收协定是否适用、适用哪一条款、税率是多少，取决于你的税务居民身份、收入性质与协定的具体条文——这些必须由你自行核实或咨询税务专业人士，本工具不提供任何国家的协定税率。收入的美国来源占比由平台按其规则判定，与你填写的估算值可能不同。在税务表上作出不实陈述可能导致处罚，请如实填写。你填写的内容不入库；不要在此填写纳税人识别号或证件号。This estimates figures and explains a process. It is not tax or legal advice. The 30% is the US statutory default for non-residents; whether a treaty applies, which article governs and at what rate depend on your tax residence, the nature of the income and the treaty text — verify these yourself or with a professional, as this tool provides no country's treaty rates. The US-sourced share is determined by the platform under its own rules and may differ from your estimate. Misrepresentation on a tax form carries penalties; complete it truthfully. Nothing you enter is stored — and do not enter taxpayer identification or ID numbers here.