TANB
Published 8 November 2026, 22:44
TANB — taxa anual nominal bruta (annual rate before tax)
The annual interest on a deposit or certificate before tax is withheld. It is usually shown alongside the TANL — taxa anual nominal líquida, the same rate after 28% tax is withheld. When comparing offers, use the same one of the two.
Where you come across it. Deposit adverts, deposit paperwork, Treasury pages on certificates.
Do not confuse it with TAEG: that is the rate on a loan, meaning what you pay rather than what you are paid. For "series 5" Treasury certificates, the average TANB over ten years is 2.710%, and the TANL at a 28% tax rate is 1.951%.