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SAT information requests: what they are and how to answer

A request isn't a rejection: it's a trial by fire. What they can ask for, how many days you have and why you should never let it lapse.

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.

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