ES
ENLaw No. 21,850 was published in Chile’s Official Gazette on 17 October 2026. Its general commencement date is 1 November 2026, subject to the specific commencement and transitional rules for each measure. Read the published law (Spanish).
Verified commencement dates
| Measure | Commencement or window | Legal basis and SII guidance |
|---|---|---|
| Default commencement | 1 November 2026, unless a special rule applies | Ninth transitional article |
| Knowledge-services credit | 1 November 2026; eligibility requirements apply | Article 7: new Income Tax Law Article 33 ter; ninth transitional article SII information page |
| Tax Code information exchange | 1 November 2026 | Article 18; ninth transitional article SII information page |
| SENCE training credit | 1 January 2027 as stated in the SII information page; course adaptation follows a separate transition | Article 29; twenty-second and twenty-third transitional articles SII information page |
| Eligible donations | One year from 1 December 2026; deed and declaration within the statutory window | First transitional article SII information page |
| First sale of eligible homes: VAT exemption | One year from 1 December 2026; seller election and property/deed requirements | Fourth transitional article SII information page |
| Extraordinary overseas disclosure | Twelve months from 1 January 2027; 10% or conditional 7% rate | Third transitional article SII information page |
| Article 107 treatment | 1 January 2027; qualifying instruments and transactions | Article 8(4); ninth transitional article, paragraph 3 SII information page |
| Tax stability | 1 January 2027; qualifying contract and investment | Article 26 SII information page |
| Corporate credit reintegration | 1 January 2027, subject to the credit-vintage transition below | Article 9; fifth transitional article SII information page |
| Principal-residence property-tax exemption, age 65+ | 1 January 2027; statutory conditions and annual declaration | Article 10; eighth transitional article SII information page |
| DFL 2 rental-income regime | Income from 1 January 2027; the transitional acquisition window is twelve months from publication | Article 3; ninth transitional article, paragraph 1; eighteenth transitional article SII information page |
| Employer credit for catastrophic diseases | 1 January 2027; eligibility, lifetime employment cap and implementing rules | Article 7: new Income Tax Law Article 33 quáter; ninth transitional article, paragraph 2 SII information page |
| IUSIF: qualifying historic balances | Eight months from publication; IDC calendar-month calculation: 17 June 2027. Simultaneous online filing and payment through Form 50; taxable-base circular not identified in the official index as at 21 October 2026 | Eleventh and twelfth transitional articles SII Exempt Resolution No. 141/2026: Form 50, lines 82–84, codes 855–860 (Spanish) |
| Treasury debt arrangements | 180 calendar days from publication. IDC legal calculation: 15 April 2027, counting complete days from the following day. Not expressly confirmed in a Treasury instruction | Second transitional article Civil Code, Articles 48–50 Treasury announcement, 19 October 2026 (Spanish) |
| Specified Pro Pyme PPM change, 0.25% to 0.23% | 1 January 2029; general-regime PPM adjustments have their own transition | Article 8(1); seventh transitional article SII information page |
Match the rate to the income year
Law No. 21,850 establishes the following phase-in for the general corporate income tax regime. Match the income year to the following tax assessment year.
| Income year | Tax assessment year | General regime rate |
|---|---|---|
| 2026 | 2027 | 27% |
| 2027 | 2028 | 25.5% |
| 2028 | 2029 | 24% |
| 2029 onward | 2030 onward | 23% |
Special Pro Pyme rules under Law No. 21,755 and the Article 14(G) exceptions for 2026 and 2027 must be considered separately. For an illustrative CLP 100 million tax base, general-regime corporate tax is CLP 27 million in 2026, CLP 25.5 million in 2027, CLP 24 million in 2028 and CLP 23 million from 2029, before credits or other adjustments.
Credit balances require their own timeline
Article 9 takes effect on 1 January 2027. Credit restitution is 30% for credits generated from income year 2027 (tax assessment year 2028) and 20% for income year 2028 (assessment year 2029). New credits generated from income year 2029 (assessment year 2030) are no longer subject to that restitution requirement. Law No. 21,850, Article 9 and fifth transitional article (Spanish).
Receiving a credit through a dividend or reorganisation does not turn an older credit into a new one. Credits accumulated through 31 December 2026 retain their previous treatment and are allocated first until exhausted, followed by the 2027 and 2028 balances. The SAC register must preserve the relevant credit vintage and restitution obligation. Non-resident shareholders must also establish their treatment under Article 63 of the Income Tax Law and any applicable treaty. SII: corporate tax integration (Spanish).
Filing readiness and legal commencement
Statutory commencement does not by itself confirm that every application form or administrative process is open. Identify the governing article, eligibility evidence, filing method, payment requirement and person responsible for each decision. Keep general monthly and annual compliance obligations in the same calendar.
The Treasury date above is an IDC legal calculation, not a Treasury-confirmed operational deadline. Check the applicable instructions, portal availability and any formally issued extension before filing. Closing dates for donations and overseas disclosure require their own review. The starting dates above follow the published law; unresolved closing-date details should not be disguised as unpublished legislation.
Legal sources and administrative guidance
Law No. 21,850: provisions linked in the calendar; sixth and seventh transitional articles for corporate tax and PPM. SII: Reconstruction Law portal.
Administrative guidance: SII information pages explain the measures but do not replace the statute or a specific circular or resolution. Check the official circular index and resolution index for issued guidance and its application to the relevant procedure. Statutory commencement and filing availability are separate matters.
Legal and source review: 21 October 2026. Illustrations do not replace a calculation for the taxpayer and year concerned. Official sources linked here are in Spanish.
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