Chile IVA — Formulario 29 Monthly Return

Confirm the taxpayer has a valid RUT, active Inicio de Actividades with SII, and is registered as a contribuyente for IVA purposes. Identify their activity category (primera categoría or trabajador independiente), whether they have mixed taxable/exempt supplies requiring proporcionalidad, and any special regimes (e.g. ZOFRI free-trade zone, exportador). Escalate to a contador auditor if proporcionalidad, real-estate IVA, or free-trade-zone rules apply.

Gather all Documentos Tributarios Electrónicos (DTEs) for the month — both issued (ventas) and received (compras) — and verify each against the SII portal. Sales documents include Facturas Electrónicas (tipo 33), Boletas Electrónicas (tipo 39), and export Facturas de Exportación (tipo 110). Purchase documents include Facturas de Compra Electrónicas (tipo 46) and Facturas Electrónicas received from suppliers. Flag any transactions backed only by non-electronic boletas or where the buyer's RUT is missing, as these cannot generate crédito fiscal.

Calculate total débito fiscal (output IVA, Code 503) from all taxable sales at 19%, segregate export sales (Code 505, 0% IVA) and exempt sales (Code 506). Calculate total crédito fiscal (input IVA, Code 525) from valid purchase DTEs related to taxable activities, adding IVA paid at customs (Code 538). Apply the remanente de crédito fiscal brought forward from the prior month (Code 77, UTM-adjusted for inflation). Net IVA payable = Code 503 − Code 525 − remanente; if negative, carry forward as new remanente. Flag any single transaction exceeding CLP 50,000,000 or any conservative default (unknown business-use vehicle, missing DTE) for reviewer attention.

Formulario 29 also carries Pagos Provisionales Mensuales (PPM) — the monthly advance payment of annual income tax — and any withholding on honorarios. Calculate PPM on gross monthly income (default rate 1% of gross, or the taxpayer's effective rate from the prior Operación Renta). Report any retención de honorarios withheld from payments made to independent contractors (13.75% in 2025, rising to 17% by 2028 under Ley 21.133). These are not IVA items but are filed on the same Formulario 29.

Submit the completed Formulario 29 electronically via the SII portal (sii.cl) by the 12th of the following month (confirm exact date on the SII filing calendar as it may shift for weekends/holidays). Pay any net IVA and PPM due via TGR (Tesorería General de la República) integrated in the portal or through an authorised bank. Retain the SII acknowledgement folio as proof of filing. If the return shows a remanente, record the new Code 77 balance for next month.