TFN 格式检查
检查九位税号（TFN）的校验位是否有效。
在您的浏览器中运行。您的文件不会离开设备。 了解如何验证
…
使用方法
- 1填写各项
输入数字或选择所需选项。
- 2查看结果
更改任何值时，答案会立即更新。
- 3使用结果
复制结果或记下来。不会向任何地方发送任何内容。
About this tool
Type a nine-digit TFN. The tool tests the check digit with the standard weighting rule, so it catches typing mistakes. Nothing is sent anywhere. Never share a TFN with people you do not trust.
How it works
A nine digit TFN is checked with weights 1, 4, 3, 7, 5, 8, 6, 9, 10 and the total must divide by 11.
Tips
Do not share your TFN with people you do not trust. Nothing here is sent anywhere.
Privacy
Everything runs in your browser, so your data is not uploaded or stored.
Staying safe
A TFN is private. Give it only to your employer, bank or the ATO. Be wary of messages that ask for it, and never post it publicly.
获得最佳结果的提示
在相信结果之前先检查每一个输入项，因为一个错误的数字就会改变整个答案。请使用工资单、账单、证书或合同上的准确数字，并记下计算日期。税率、门槛和规则会不时变化，因此对于税费和法律事务，请将结果视为估算，并与本页注明的官方来源核对。您可以尝试任意多个方案；不会保存或发送任何内容，刷新页面会清空输入。
要点
常见问题
Is my TFN stored?
No. It is checked in your browser and not sent or saved.
Does it confirm my TFN is issued?
No. It only tests that the digits are consistent. Only the ATO can confirm a TFN.
Is my TFN stored?
No.
Does it prove the TFN is issued?
No. Only the ATO can confirm.
Where do I get a TFN?
Apply on the ATO website. This tool does not issue numbers.