税单6个月，CPF 3年
公司单六个月吧，税单好像是5年，不过没有那么多也无所谓
现在都不用交了，直接授权查询即可。
参见我签名处的热点问题的教程
妥妥的反了。。。
公民申请需要的列表上有如下的一段话：
Authorisation form for ICA to obtain and verify financial information with the Inland Revenue Authority of Singapore and Central Provident Fund Board. (However, if you do not wish to give consent for the former, you will need to furnish us with your Income tax notice of assessment for latest 3 years and CPF contribution history for latest 6 months, preceding the date of this application).