How are IBS and CBS calculated on an import?
The taxable event is the entry of foreign goods into Brazilian territory, and the calculation is deemed to occur when goods cleared for consumption are released. That is written into articles 65 and 67 of Complementary Law 214/2025.
The base is the customs value plus a closed list: import duty, the selective tax, the Siscomex system fee, the AFRMM merchant marine surcharge, the fuel Cide contribution, anti-dumping duties, countervailing duties, safeguard measures and any other charge levied up to release. IPI, ICMS and ISS are excluded from that base (article 69, paragraph 2).
Hold on to this one, because it rewrites spreadsheets: the IBS and CBS rate on an import equals the rate charged on buying the same good inside Brazil, under article 71. The design goal is to erase the tax advantage of sourcing abroad. Rerun your landed cost with that equivalence in hand.