出口退税率查询的三个误区：查到的税率为什么和实际退的不一样
退税率查询不到或者查到但用不了，往往是查询口径错了。本文讲清编码版本、商品归类、政策时效三个误区，给出正确的查询路径和核对方法。
出口退税
Policy & Regulations
Export Tax Rebate Rates: Why the Rate You Look Up Is Not the Refund You Receive
The rebate rate is a policy parameter. The refund is a calculation result. Confusing the two is where rebate errors start. Three lookup mistakes and the correct sequence.
Policy & Regulations
Export Tax Refund Document Filing: What to Keep, How Long, and What It Costs to Miss
Document filing is a retention obligation in its own right, not a side effect of filing the refund. The checklist is short, the clock is easy to start wrong, and gaps surface only during a review.
政策法规
出口退税单证备案的留存要求：备案清单、留存年限与不全的后果
单证备案不是办税时顺手的事，而是一项独立的留存义务。备案清单有哪些、留存多久、能不能只存电子件、漏了会被怎么处理——这四件事在申报完成之后才真正开始产生影响，也是事后核查中最常见的失分点。请把它当成一项常规工作。