You filed your refund claim and an information request shows up in your tax mailbox. Breathe: it's not a rejection or an audit. It's the SAT saying 'prove it'. How you answer determines whether your money arrives or gets stuck.
What they can ask for
- Working papers for creditable and collected IVA.
- Bank statements and reconciliations.
- Contracts, quotes and materiality evidence for relevant operations.
- Clarification of differences between CFDIs, returns and the DIOT.
- Information on key suppliers: who they are, what they sell you, how you pay them.
The deadlines, no fine print
The SAT can issue a request within the first 20 business days after your claim, and a second one within 10 days of your answer. You have 20 business days to answer the first and 10 for the second. While you respond, the 40-day clock pauses. Miss the deadline and the claim is deemed abandoned — back to square one.
Letting a request lapse is the most expensive way to lose a refund: you lose the claim, the months of waiting, and you hand the SAT a record of opacity.
How to answer well
Complete, organized, and right the first time. Every point in the request gets an explicit answer, with indexed attachments a reviewer can follow without guessing. Partial or messy answers invite a second request — or a rejection for 'failure to prove'. At Taxwell we build the file before filing precisely so that a request, if it comes, gets answered in days, not weeks.






