The Back to Black singer is said to be earning a small fortune to perform because Brazil wants to promote itself as a destination for music fans.
A source told British newspaper The Sun: 'Amy will be rolling in it. Brazil is keen to establish itself as a major player in music and is attracting a host of top stars.
'A lot of money is being thrown around to secure their services.'
The 27-year-old played her first show in Florianopolis at the Summer Soul Festival over the weekend where she belted out her big hits such as Rehab.