Cross‑Border Tax Forecast 2026 in Chile

As of 2026, the Internal Revenue Service (SII) has consolidated its authority to conduct electronic and remote audits across all jurisdictions in Chile. 

The current regime prioritises financial transparency through two main mechanisms:

• banking transparency: financial institutions must submit semi-annual reports (every January and July), identifying accounts that receive more than 50 credits from different sources in a month or 100 in a semester
• digital intermediation: digital marketplaces and payment processors are legally required to verify that their professional users have a valid taxpayer startup (inicio de actividades). Platforms must report the transaction volume of any users who claim exemption from this requirement.

The growing interaction between banking information and data obtained from digital platforms has significantly increased taxpayers’ exposure to oversight. Several practical risks emerge from this environment:

• SII now has the capacity to compare financial movements automatically with reported economic activity; this makes it easier to identify income that has not been disclosed and may lead to the initiation of formal review procedures
• when noncompliance persists in activities conducted through online platforms, the SII may request measures that affect the taxpayer’s ability to continue operating digitally; these actions can range from restrictions on the use of payment service providers to the temporary suspension of a website associated with the underlying activity
• a system is in place that encourages individuals to provide information related – to potential tax offences; under this framework, whistleblowers may receive a portion of the penalties ultimately imposed, provided that the amounts involved exceed certain thresholds
• matters of greater significance –such as the application of the General Anti-Abuse Rule (GAAR) or large-scale tax fraud investigations – are reviewed by a specialised committee responsible for setting criteria and coordinating the authority’s response.

• Regularly compare bank activity with accounting books to prevent inconsistencies that may trigger SII monitoring alerts
• Businesses selling through digital platforms should keep their tax registration (inicio de actividades) updated to avoid restrictions on payment systems or online presence
• Gradually migrate records to electronic formats to align with the SII’s remote audit model and improve response efficiency
• Use voluntary correction mechanisms: if errors are detected in recent tax filings, the self-reporting procedure (autodenuncia) can help correct them proactively and prevent escalation to criminal proceedings

As part of the annual adjustments established by law, the WHT rate for professional fee receipts (boletas de honorarios) has increased to 15.25% for the 2026 period.