One-minute summary
On May 1, 2026, SII stops accepting guías de despacho that don't carry the extended freight fields. Any Chilean Odoo deployment that hasn't been configured by then freezes its dispatch operation that same night. And this is the third of three SII waves in 2026: the first hit on January 1, the second in March. Most Chilean SMBs still haven't closed even wave one.
If you issue boleta electrónica via thermal printer without capturing the customer's email, run guías de despacho in Excel, or sell on Mercado Libre without a marketplace report, each case falls under Código Tributario art. 97: fines from 1 UTM (~CLP $70,000, ~USD $79) up to 100% of the VAT defrauded, plus a block on new DTE issuance.
This piece is a lead magnet: 35 items across 7 blocks. Each item is a concrete Odoo action, a specific module, a verifiable check. The Excel version with auto-scoring and UTM-based fine math ships to subscribers at the end.
- Three SII change waves in 2026: January 1 (marketplace plus end of the paper fiscal stamp), March (boleta via email/SMS/WhatsApp), May 1 (extended guía de despacho).
l10n_cldoes not cover everything. You needl10n_cl_edi,l10n_cl_edi_boletas, andl10n_cl_edi_stock; the latter two are Enterprise-only.- Fines under Código Tributario art. 97: from 1 UTM to 100% of the VAT defrauded, plus a block on new DTE issuance.
- The checklist is 35 items across 7 blocks.
- Minimum migration investment for an SMB with 20–50 stores: USD $15K–$35K over 60–90 days.
The three SII waves in 2026
The three rules don't land together. They stack over five months, and each one touches a different part of Odoo, so you can't patch them one at a time without the others unraveling.
#1. Wave 1 — January 1, 2026: marketplace reporting and the end of the paper fiscal stamp
Resolución SII N° 207 drops the requirement to print a physical fiscal stamp on the boleta. In parallel, it introduces a new obligation: every POS operation must reach the SII digital ledger within 72 hours.
From the same date, marketplace platforms (Mercado Libre, Linio, Falabella.com, AliExpress LATAM) report seller sales directly to the SII. If Odoo does not reconcile those sales against your VAT ledger, the discrepancy surfaces in SII's first quarterly cross-check.
#2. Wave 2 — March 2026: digital-only boleta for printer-less merchants
Resolución Exenta SII N° 53 requires merchants without a thermal printer (online retailers, tablet-ordering restaurants, food trucks) to deliver the boleta through a digital channel: email, SMS, WhatsApp, or a QR code on the POS screen.
What this demands of Odoo: capture email or mobile phone mandatorily on every sale, integrate at least two delivery channels (in case one fails), and keep a delivery log with confirmation timestamps.
#3. Wave 3 — May 1, 2026: extended guía de despacho
The most painful one for retail and distribution. SII now requires extended fields on every guía: full origin (address, comuna, region), full destination, carrier (RUT, legal name, line of business), driver (RUT, name, license), vehicle (plate, type, declared capacity).
The 35-item SII 2026 checklist for Odoo
Each block groups configurations that share a functional owner: IT for localization, finance for certificates, operations for guías. If one person tries to cover all seven blocks alone, the project stalls in week two.
#1. Block 1. Odoo localization (5 items)
l10n_clinstalled (Chile base, Community and Enterprise).l10n_cl_ediinstalled (DTE).l10n_cl_edi_boletasinstalled (Enterprise — boleta electrónica).l10n_cl_edi_stockinstalled (Enterprise — guía de despacho).- OCA modules from
l10n-chilechecked for compatibility against your Odoo version (16/17/18).
#2. Block 2. SII certification and authentication (6 items)
- Advanced electronic signature certificate (Acepta, E-CertChile, E-Sign Latam) loaded into Odoo.
- Certificate validity >6 months.
- CAFs downloaded for each DTE type: 33 (factura), 39 (boleta), 52 (guía), 56/61 (NC/ND).
- Alert when CAF balance falls below 20%.
- SII certification environment passed for each document type.
- RUT, line of business, and address correct in
res.company.
#3. Block 3. Boleta electrónica (8 items, Resolución Exenta N° 53)
- Boleta electrónica enabled on every POS.
- Customer email marked as required in
pos.config. - SMTP email-delivery channel configured and tested.
- SMS channel (Twilio, TUenvio, or a local provider) configured for March 2026.
- WhatsApp Business API configured (Meta Business + verified profile).
- Boleta QR rendered on the ticket or on the POS screen.
- Physical fiscal stamp removed from the configuration.
- Delivery-monitoring dashboard: % delivered vs. rejected by channel.
#4. Block 4. Factura electrónica (4 items)
- Supplier acceptance/rejection workflow (Ley 19.983, 8 business days).
- Credit and debit notes automatically linked to the original DTE.
- Bank statement ↔ factura DTE reconciliation automated.
- 30 / 60 / 90-day reclamation control in place.
#5. Block 5. Extended guía de despacho (5 items, effective May 1, 2026)
- Full origin — address, comuna, region in every guía.
- Full destination — same fields, optional geo-reference.
- Carrier —
res.partnerwith RUT, legal name, line of business. - Driver — RUT, name, license number.
- Vehicle — plate, type, declared capacity.
#6. Block 6. Marketplace and reporting (3 items, effective January 1, 2026)
- Connector for each channel: Mercado Libre, Falabella.com, Linio.
- Auto-generated consolidated report per sales channel, monthly.
- Marketplace commission ↔ VAT ledger reconciliation.
#7. Block 7. Monitoring and disaster recovery (4 items)
- Alerts on >3 consecutive SII submission failures via Slack, email, or SMS.
- Offline issuance queue when SII is down for >15 minutes.
- Certificate backup held by the Odoo admin, not just the GM.
- DTE log retention ≥6 years.
When Odoo works, when it doesn't
The 35 items assume a reasonably modern Odoo. Three scenarios change the picture.
#1. Odoo Community 16/17
l10n_cl and l10n_cl_edi for factura work fine. Boleta and guía de despacho through the standard modules are Enterprise-only. Side-by-side:
| Module | Community | Enterprise | OCA alternative |
|---|---|---|---|
l10n_cl | ✓ | ✓ | n/a |
l10n_cl_edi | ✓ | ✓ | n/a |
l10n_cl_edi_boletas | ✗ | ✓ | partial |
l10n_cl_edi_stock | ✗ | ✓ | in progress |
For volume up to 500 boletas/month, an external DTE provider is cheaper. Above 1,000, Enterprise pays for itself in 12 months.
#2. Heavy customization (>20 inheriting modules)
Upgrading to Odoo 17 or 18 for SII 2026 can break customizations. A code-conflict audit against l10n_cl_edi_* is mandatory before migrating; running it after means paying for the same work twice.
#3. B2B-only or dropshipping
If you're purely B2B, Block 3 doesn't apply. Still, check that you don't have a hidden B2C operation (sales to employees, samples to clients): if you do, Block 3 partially kicks in.
If you dropship from the US or China, the electronic guía is issued in the country of origin, not in Chile. Block 5 doesn't apply directly, but you do need to know who issues the guía in the chain. Discrepancies in import VAT declarations trigger an SII audit.
#4. External DTE provider (Sovos, Edicom, Acepta DTE)
Block 2 lives at the provider. Your job is the integration so the DTEs flow back into Odoo for reconciliation. Stock l10n_cl_edi does not cover that; a custom connector is needed.
Five common mistakes when preparing for SII 2026
#1. Customer email is not captured at the POS
The boleta is printed on the thermal printer and the copy is lost. From March 2026 onwards, this is a Resolución Exenta N° 53 violation even if a printer is in use: SII demands digital delivery as a fallback.
#2. The electronic signature certificate is never renewed
Validity is 1 to 3 years. Most SMBs install it and forget. When it expires, all DTE issuance fails. Reissuance takes 48–72 business hours, and the business cannot issue anything during that window.
#3. CAF runs out without an automatic alert
By default, Odoo does not warn when the folio balance is low. SMBs find out when the first transaction of the day bounces. A new CAF takes 1–2 business days. The business sits idle.
#4. Guías are issued via Excel + a PDF stamp
Common practice in 2022–2024. From May 1, 2026, the SII rejects them. The migration to l10n_cl_edi_stock has to be in place by April.
#5. Marketplace sales are booked separately
You sell on Mercado Libre, track it in Sheets, the accountant ties it together once a month. From January 1, the SII gets the data from Mercado Libre directly. If your VAT ledger shows less, you're flagged for audit.
"SII isn't trying to collect more this round. It's trying to close the gaps that paper left open. That's why the UTM fines are small but the DTE block is what actually hurts."
Case study: a Santiago retail chain, 38 stores, USD $2.4M revenue
A fashion chain running 38 brick-and-mortar stores plus an online presence on Falabella.com arrived in December 2025 on Odoo Community 14 with an external DTE provider. Three critical issues:
- Boleta printed on a thermal printer, no email captured — 0% digital delivery.
- Guía de despacho on Excel with a PDF stamp (no path forward after May 1, 2026).
- Falabella.com sales (~22% of revenue) in a separate system, not reconcilable with Odoo.
Executed in 90 days:
- Migration to Odoo 17 Enterprise and installation of
l10n_cl_edi,l10n_cl_edi_boletas, andl10n_cl_edi_stock. - Custom POS extension: email/phone capture, Twilio for SMS, WhatsApp Business API.
- Marketplace connector for Falabella.com over API.
- DTE issuance dashboard in Grafana with Slack alerts.
Results after the March 2026 go-live:
- Reconciliation: 30 h/week → 4 h/week.
- SII DTE rejection rate: 11% → 0.3%.
- Readiness for May 1, 2026: 100%.
- Marketplace discrepancy in the first quarter: zero.
Investment: ~USD $28K over 90 days of implementation plus USD $400/month of maintenance. Against the permanent 12.5% SMB tax the Kast government fixed in April 2026, payback lands at 14 months.
Next step: the Excel version of the checklist
This article is a text summary. Subscribe to the «Pulso Odoo LATAM» newsletter and get the Excel version with auto-scored readiness per item and projected fines in UTM and USD. One email a week on LATAM compliance. No spam.
If you need a quick audit of a specific configuration, book 30 minutes with the author.
SII 2026 isn't one change; it's three waves in five months. Since January 1, marketplace reporting and the end of the paper fiscal stamp are already in force. Since March, the boleta has to go out digitally. From May 1, the extended guía de despacho is mandatory.
The 35-item checklist covers all three. Each item is a concrete Odoo configuration, and most can be closed in 1–3 days of consultant work. A full SMB migration runs 60–90 days. Among Odoo Gold partners in Chile at publication time, only two are available: the supply is thin and the window is short.
Related material:
FAQ
What happens if I don't make the May 1, 2026 deadline for guías?
From May 1 onwards, the SII rejects any guía missing the new fields. Without an accepted guía you cannot dispatch, and the business stops the same day the rule takes effect.
The SII confirmed it will accept a stub variant (physical guía plus a parallel electronic submission) for the first 30 days, but it's an exception, not the rule.
What are the fines for SII 2026 non-compliance?
Código Tributario art. 97 N° 10: from 1 UTM (~CLP $70,000) up to 100% of the VAT defrauded, plus a block on issuing new DTEs. For failing to report marketplace sales, art. 97 N° 16: 50% of the omitted tax with a minimum of 5 UTM (~CLP $350,000).
The exact amount depends on volume and circumstances; consulting a certified accountant in Chile is mandatory.
Does Odoo Community cover every SII 2026 requirement?
No. l10n_cl_edi_boletas and l10n_cl_edi_stock are Enterprise-only. The Community alternatives are custom development on top of OCA l10n-chile (~USD $5K–$15K of developer time) or an external DTE provider (USD $200–$800/month).
The choice depends on DTE volume and planning horizon.
How long does the migration take?
SMB with 5–15 stores and up to 500 DTE/month: 30–45 days. SMB with 20–50 stores and up to 2,000 DTE/month: 60–90 days. Large retail with marketplace and 5,000+ DTE/month: 90–120 days.
Anyone starting in May 2026 still makes wave three with room to spare; anyone who waits until June ends up in crisis mode.
What do we do if the SII portal is down during issuance?
l10n_cl_edi ships with an offline queue: documents accumulate and submit automatically once SII recovers. SII accepts retroactive submissions without penalty as long as the delay is under 72 hours and the outage is logged.
The real requirement is that alerts are configured, so you don't blow past the 72-hour window.
Does the checklist apply to foreign companies with a Chilean branch?
Yes. Once registered as VAT taxpayers in Chile, foreign branches fall under the same DTE regime. The added complexity shows up in Block 4 (factura electrónica between parent and branch) and in Block 6 if the parent also sells through LATAM marketplaces.
Does the checklist hold for older Odoo versions, like 13 or 14?
Partially. Items in Blocks 1, 2, and 4 do; Blocks 3 and 5 require l10n_cl_edi_boletas and l10n_cl_edi_stock, which aren't maintained for Odoo <16. The practical recommendation is to plan the jump to 17 or 18 in the next 6 months; manual patches on v13/v14 accumulate more debt than the migration itself.