
Luxembourg Top-Up Tax Return Filing Guide
A practical guide to Luxembourg’s top-up tax return on MyGuichet.lu, including what the local XML does, which fields drive the filing logic, and where groups usually need extra controls.
Paraguay stands out amongst most South American countries as being the one most at risk of substantial jurisdictional top-up tax for in-scope groups under Pillar Two.
Its standard rate of corporate income tax is 10% under Article 21 of Law No. 6,380/19 on the Modernization and Simplification of the National Tax System. This is in contrast to other South American jurisdictions that have much higher standard rates of corporate income tax, such as:
Brazil – 34%
Argentina – 35%
Chile – 27%
Peru – 29.5%
Columbia – 35%
Venezuela – 34%
Guyana – 40%
Mexico – 30%
Nicaragua – 30%
Ecuador – 25%
Bolivia – 25%
Uruguay – 25%
Article 1 of Law No. 6,380/19 on the Modernization and Simplification of the National Tax System establishes a territorial basis for corporate income tax in Paraguay. As such, only income from Paraguayan sources is taxable, subject to a number of exceptions. For instance, Article 6 of Law 6,380/19 provides that Paraguayan source income includes:
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A practical guide to Luxembourg’s top-up tax return on MyGuichet.lu, including what the local XML does, which fields drive the filing logic, and where groups usually need extra controls.

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