SII Inicio de Actividades Form Chile

SII Inicio de Actividades Form Chile (Formulario 4415) is the official registration document required by the Servicio de Impuestos Internos (SII) — Chile's tax authority under the Ministerio de Hacienda — that every natural person (persona natural) and legal entity (persona jurídica) must file before beginning any taxable economic activity in Chile. The obligation is established in Artículo 68 of the Código Tributario (CT), which was codified by Decreto Ley N° 830 of 1974 and states that taxpayers must notify the SII of the start of their activities within two months of commencing operations, or prior to first issuing documents (facturas, boletas, o liquidaciones).

Form 4415 — known officially as the Formulario de Inicio de Actividades — captures the taxpayer's identification data (RUT: Rol Único Tributario, assigned by the Registro Civil e Identificación or the SII itself), the primary commercial or professional giro (economic activity code from the SII's Clasificador de Actividades Económicas), the domicilio tributario (tax address), the type of accounting regime elected (contabilidad completa under Régimen General de Primera Categoría or the simplified Régimen Pro PYME under Ley N° 21.210 of 2020), and the tax obligations the taxpayer will assume — IVA (Impuesto al Valor Agregado at 19% under DL 825/1974), Impuesto de Primera Categoría, Impuesto Global Complementario, and/or withholding obligations for remuneration payments.

The Código Tributario Article 68 imposes a strict two-month deadline from the date commercial activities begin. Failure to file within this period constitutes a tax infraction (infracción tributaria) sanctioned under Código Tributario Article 97 N° 1, which carries a penalty of one UTM (Unidad Tributaria Mensual) to one UTA (Unidad Tributaria Anual). The UTM and UTA values are adjusted monthly by the SII based on the IPC (Índice de Precios al Consumidor — Consumer Price Index) published by the Instituto Nacional de Estadísticas (INE).

The SII processes Form 4415 registrations through its online portal (www.sii.cl) via the Mi SII platform using Clave Única (the government-issued digital identity credential managed by the Registro Civil) or the SII's own Clave Tributaria. Foreign individuals without a Chilean RUT must first obtain a RUT from the SII's foreign taxpayer unit before completing Form 4415. Legal entities — including SpA (Sociedad por Acciones), SRL (Sociedad de Responsabilidad Limitada), and SA (Sociedad Anónima) — must first register in the Registro de Comercio of the Conservador de Bienes Raíces, publish the company estatutos in the Diario Oficial, and obtain a RUT before filing Form 4415.

The Reforma Tributaria of Ley N° 21.210 (February 2020) introduced the Régimen Pro PYME (Article 14 D of Ley de Impuesto a la Renta) as a simplified tax regime for businesses with average annual revenue under 75,000 UF, replacing the former 14 ter regime. Taxpayers filing Form 4415 must now elect between the Régimen General (full accrual accounting under Artículo 14 A LIR) and the Régimen Pro PYME (cash-basis simplification under Artículo 14 D LIR) — a decision with lasting tax consequences affecting how income, expenses, depreciation, and credits are computed.

The SII's Resolución Exenta N° 11 of 2014 (and subsequent amendments) established the mandatory use of the Factura Electrónica system for all registered taxpayers, meaning that once Form 4415 is approved, taxpayers must immediately enroll in the Sistema de Facturación Electrónica SII (SFE) and begin issuing electronic documents (facturas electrónicas, boletas electrónicas, and notas de crédito/débito electrónicas) through a software provider authorized by the SII or directly through the SII's own free portal (facturación.sii.cl).

An SII Inicio de Actividades filing is required by every taxpayer — natural person or legal entity — who begins any economic activity generating Chilean-source taxable income, before issuing the first tax document or within two months of commencing operations under Código Tributario Article 68.

Professionals (médicos, abogados, arquitectos, ingenieros, contadores, and other independent workers classified as segunda categoría under Ley de Impuesto a la Renta Article 42 N° 2) must file Form 4415 before issuing the first boleta de honorarios electrónica through the SII portal. Failure to register first results in rejection of the boleta issuance request.

Entrepreneurs forming a new SpA (Sociedad por Acciones) under Ley N° 20.190 Article 424 of the Código de Comercio, or a new Sociedad de Responsabilidad Limitada (SRL) under Ley N° 3.918, must file Form 4415 within two months of the company's inscription in the Registro de Comercio and publication in the Diario Oficial. The EIRL (Empresa Individual de Responsabilidad Limitada) established under Ley N° 19.857 follows the same registration requirement.

Retail and commercial business owners — supermercados, ferreterías, tiendas de ropa, restaurants, and any physical or online store selling goods or services — must register giro comercial or giro de venta al por menor with the SII before opening their doors or accepting the first payment. The Municipalidad requires a Patente Municipal (municipal business license) — issued under Ley N° 18.695 (Orgánica Constitucional de Municipalidades) — and the Patente application process requires prior SII registration proof.

Real estate investors (inversionistas en bienes raíces) who rent residential or commercial properties generating rental income subject to Impuesto de Primera Categoría under LIR Article 20 N° 1 must register as taxpayers with Form 4415 when rental income exceeds the exemption thresholds established by the SII annual circular (Circular SII).

Exporters registered with ProChile and DIRECON (Dirección General de Relaciones Económicas Internacionales) who issue DUS (Documentos Únicos de Salida) for export operations must be registered with the SII through Form 4415 before the Servicio Nacional de Aduanas (Aduana) processes their export declarations.

Foreign companies establishing a permanent establishment (establecimiento permanente) in Chile under the tax treaty network administered by the SII — including treaties with Argentina, Brazil, Canada, Colombia, Spain, the United States, and over thirty other countries — must file Form 4415 for the Chilean branch or agency through a legal representative with power of attorney.

An SII Inicio de Actividades filing under Código Tributario Article 68 using Form 4415 must include the following essential components to be accepted and processed by the Servicio de Impuestos Internos:

Taxpayer Identification (Identificación del Contribuyente): The RUT (Rol Único Tributario) — Chile's unified taxpayer identification number assigned to every natural person and legal entity — is the cornerstone of the SII registration system. Natural persons receive their RUT automatically from the Registro Civil e Identificación at birth or upon obtaining residency. Legal entities receive their RUT from the SII after constituting the company and completing the Registro de Comercio inscription. The RUT format is XXXXXXXX-Y where X represents numerical digits and Y is the verification digit (dígito verificador) calculated using the Module 11 algorithm.

Economic Activity Code (Código de Actividad Económica — Giro): The taxpayer must declare one or more giros from the SII's official Clasificador de Actividades Económicas (CAE), which classifies all economic activities using a four-digit code system aligned with the CIIU Rev. 3 (Clasificación Industrial Internacional Uniforme) standard. Common giros include: 6720 (Actividades de empresas de seguros y fondos de pensiones), 7411 (Actividades jurídicas), 7412 (Actividades de contabilidad, auditoría y teneduría de libros), 4711 (Venta al por menor en comercios no especializados), and 5610 (Actividades de restaurantes y de servicio móvil de comidas). The giro selection determines which tax forms — F22 (Declaración Anual de Renta), F29 (Declaración Mensual de IVA), and F50 (Declaración de Impuestos Varios) — the taxpayer must file.

Tax Domicile (Domicilio Tributario): The address where the taxpayer carries out their economic activities and where the SII will direct official notifications and audit visits. For natural persons, the domicilio tributario is typically the business address (not necessarily the residential address). For legal entities, it must match the registered address in the estatutos and Registro de Comercio. The domicilio must include the street name, number, apartment or floor, city, and región (Region I through Region XVI, including the Región Metropolitana de Santiago).

Tax Regime Election (Régimen Tributario): Under the Reforma Tributaria of Ley N° 21.210, taxpayers must elect one of the following regimes: (a) Régimen General de Primera Categoría (Article 14 A LIR) — applicable to all taxpayers, uses full accrual accounting (contabilidad completa), pays Impuesto de Primera Categoría at 27% on taxable income, and allows shareholders to credit the corporate tax against their personal Impuesto Global Complementario; (b) Régimen Pro PYME (Article 14 D LIR) — available to businesses with average annual revenue under 75,000 UF (approximately CLP 2,900,000,000 at current UF values), uses simplified cash-basis accounting, pays a reduced Impuesto de Primera Categoría rate of 25%, and allows immediate deduction of capital expenditures; (c) Régimen de Transparencia Tributaria (Article 14 D N° 8 LIR) — a variant of Pro PYME where the company pays no corporate income tax and all income is attributed directly to the owners who pay Global Complementario at their personal rates.

IVA Registration (Afecto a IVA): Taxpayers selling goods or rendering services subject to Impuesto al Valor Agregado (IVA) at 19% under DL 825/1974 must declare their IVA taxpayer status in Form 4415. Once registered, the taxpayer must file monthly IVA declarations using Formulario 29 (F29) through the SII portal, charged with IVA débito fiscal (output tax on sales) and creditable with IVA crédito fiscal (input tax on qualifying purchases). Exempt activities — such as health services, education, and certain professional services — may be exento de IVA but still subject to Impuesto de Primera Categoría.

Capital Declared (Capital Declarado): Legal entities must declare the initial paid-in capital (capital pagado) as registered in the estatutos and Registro de Comercio. This amount appears in the SII's Registro de Contribuyentes and serves as the baseline for the SII's risk assessment and audit targeting algorithms.

Authorized Representative (Representante Legal): For legal entities, the Form 4415 must identify the representante legal — the person authorized to sign on behalf of the company before the SII and other public entities — including their full name, RUT, and position (cargo). The representative's authority must derive from the company's estatutos or a notarially authorized power of attorney (mandato notarial) filed with the SII.

Accounting Method Declaration (Declaración de Método Contable): Taxpayers must declare whether they will maintain contabilidad completa (full double-entry bookkeeping under Normas Internacionales de Contabilidad adapted by the Colegio de Contadores de Chile) or contabilidad simplificada under the Pro PYME regime. Contabilidad completa requires maintaining Libro Diario, Libro Mayor, Libro de Inventarios y Balances, and Libro de Remuneraciones — all registered and stamped by the SII.

Forms-legal.com provides this SII Inicio de Actividades template as a practical reference for entrepreneurs and professionals beginning their tax registration journey in Chile. Tax registration requirements change regularly with SII circulares and resolutions — both the SII website (www.sii.cl) and a qualified contador tributario should be consulted to ensure the latest Form 4415 version and current giro codes are used. Los usuarios de forms-legal.com pueden descargar este documento de forma gratuita en formato PDF o DOCX, completar los campos del formulario guiado y obtener un documento listo para firma.