CFDI · e.firma · bulk download
Bulk CFDI download with the e.firma: how it works
Why SAT's bulk download requires the e.firma and not the CIEC, what gets downloaded, how long it takes and what happens to your e.firma when you connect it to Clauhub.


Downloading your XML one by one from SAT’s portal works for a handful of invoices. For a whole month, several RFCs or five years of history, what you need is bulk download. Here’s how it works.
Why it requires the e.firma
SAT’s bulk download requires the e.firma. With the password (CIEC) you cannot request XML in bulk. The e.firma is your advanced electronic signature: a certificate (.cer), a private key (.key) and its password.
What gets downloaded
The CFDI you issued and received, up to five years back.
How long it takes
- Your most recent received invoices arrive within minutes.
- Issued invoices and the five-year history take from a few hours to a day, depending on your volume.
- After that, Clauhub syncs on its own every 12 hours and checks the latest throughout the day.
No captcha and no 500-per-query cap like the portal’s. If SAT is slow, especially at month end, Clauhub retries on its own and lets you know.
Nothing to install
Everything runs in the browser, on any computer. If you already have XML from a downloader, drag them in and Clauhub merges them with what it downloads from SAT.
What happens to your e.firma
- Used to request your invoices from SAT, check your Buzón Tributario and download your tax status certificate and compliance opinion (32-D).
- Never to issue or cancel invoices, share it outside your organization or show you its password back.
- The password is stored encrypted with AES-256-GCM; the certificate and key live in private storage only your organization reaches.
- You delete it whenever you want: Clauhub stops downloading and your invoices stay.
For accounting firms
Each client is a fiscal entity with its RFC and e.firma, in the same account, with roles per person. You switch clients in one click.
Not tax advice: review your case with your accountant.
Related terms
Sources
- Federal Tax Code (CFF), arts. 17-D (e.firma) and 29 (CFDI)
- SAT's bulk CFDI download service, v1.5
Make these checks automatic.
Connect your e.firma and Clauhub downloads your CFDI and checks them every day.
Create your accountKeep reading
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