Compliance
Compliance Update: Key Tax Deadline Changes & Official Calendars in Latin America
Recent official changes in Mexico, Colombia and Chile alter deadlines and rules for tax filings and interest rates—comply now to avoid penalties.
By NomadicTax Research Team • 5 min read • August 10, 2026
## Introduction
Timely compliance is essential—recent policy announcements across Latin America have changed deadlines and rates for tax payments. Here's what taxpayers must urgently know.
## Mexico – SAT’s Buzón Tributario Period & RMF Modifications
- The **Buzón Tributario** considers submissions made between **20–31 July 2026** as filed on **3 August 2026** due to inhábiles declared days under Código Fiscal de la Federación and RMF rules. ([wwwnp.sat.gob.mx](https://wwwnp.sat.gob.mx/minisitio/BuzonTributario/index.html?utm_source=openai))
- The **Primera Resolución de Modificaciones a la Resolución Miscelánea Fiscal 2026**, published **9 July 2026**, introduced these determinations plus updates to Anexo 1 forms and various processes. ([sat.gob.mx](https://www.sat.gob.mx/minisitio/NormatividadRMFyRGCE/normatividad_rmf_rgce2026.html?utm_source=openai))
## Colombia – DIAN’s Calendar Adjustments & Clarifications
- **Comunicado No. 092**, 2 July 2026: Colombia added a new national holiday under **Ley 2578 de 2026**, prompting shifts in deadlines for taxes like IVAs, renta de personas jurídicas, retenciones, régime simple, etc., with adjusted dates between **9–24 July** depending on NIT digit. ([dian.gov.co](https://www.dian.gov.co/Prensa/Paginas/NG-Comunicado-de-Prensa-092-2026.aspx?utm_source=openai))
- **Comunicado No. 096**, 23 July 2026: DIAN clarified that the government's newly submitted reform doesn’t target middle class income, basic necessities or housing; it is presented as progressive. While not law yet, it gives insight into direction. ([dian.gov.co](https://www.dian.gov.co/Prensa/Paginas/NG-Comunicado-de-Prensa-096-2026.aspx?utm_source=openai))
## Chile – SII Interest Rates & VAT-Digital Rules
- **Resolución Exenta SII N° 88**, 26 June 2026: fixed the **moratory interest rate** for tax payments starting **1 July 2026**, with details on rates for longer term obligations and thresholds (e.g., up to 2,000 UF). ([sii.cl](https://www.sii.cl/normativa_legislacion/resoluciones/2026/reso88.pdf?utm_source=openai))
- **Resolución Exenta SII N° 98**, 23 July 2026: includes a convention facilitating information exchange and compliance for non-resident service providers online (e.g., digital platforms, gambling, etc.), enforcing obligations on those without domicile in Chile. ([sii.cl](https://www.sii.cl/normativa_legislacion/resoluciones/2026/res_ind2026.htm?utm_source=openai))
## Actionable Compliance Steps
- **Check which deadlines apply** to your NIT / RFC / RUT—for Mexico & Colombia, digital nomads and clients in region may be caught unaware.
- For Chilean non-residents selling digital services, be proactive in registering or working with the clients who may have to withhold VAT per SII’s rules. ([sii.cl](https://www.sii.cl/normativa_legislacion/resoluciones/2026/res_ind2026.htm?utm_source=openai))
- Monitor moratory interest rates especially if you have outstanding tax balances. Know that any tax debt accruing interest after 1 July will use new SII’s penalties. ([sii.cl](https://www.sii.cl/normativa_legislacion/resoluciones/2026/reso88.pdf?utm_source=openai))
- Update accounting and internal tax calendars—Mexico’s RMF Anexo changes and Colombia’s calendar adjustments may affect your internal filing schedules.
## Conclusion
Staying current on shifting deadlines and rate announcements from SAT, DIAN, SII is crucial. Miss one update and yours—or your clients’—business could face avoidable penalties. Adjust your compliance schedule now.