SII: Immediate Information Supply
AEAT's system for electronic invoice submission within 4 or 8 business days.
What is SII
The Immediate Information Supply (SII) is an AEAT system that requires electronic submission of issued and received invoice details within 4 business days (8 days in the first half of the compliance period). It has been in force since July 2017.
It is mandatory for companies with annual turnover exceeding 6 million euros, large companies and VAT groups.
Who it affects
- 1
Companies with turnover exceeding 6,010,121.04 EUR
- 2
Large companies registered in REDEME
- 3
VAT groups
- 4
Companies that voluntarily opt into the system
Key deadlines
SII comes into force
Deadline for submitting issued invoices
Deadline for registering received invoices
How Facturacion IA helps with SII
Automatic AEAT submission
Facturacion IA submits your invoices to SII automatically within the legal deadline.
Pre-submission validation
We verify all mandatory fields are complete before submission.
Status tracking
Check in real-time whether AEAT has accepted or rejected each invoice.
Automate SII with Facturacion IA
Forget about deadlines and manual submissions. We handle it for you.
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