1. Britney Spears – $58 million
2. Taylor Swift – $57 million
3. Rihanna – $53 million
4. Lady Gaga – $52 million
5. Katy Perry – $45 million
6. Beyonce – $40 million
7. Adele – $35 million
8. Sade – $33 million
9. Madonna – $30 million
10. Shakira – $20 million

The figures represent earnings from May 2011 to May 2012, before subtracting management fees, legal costs and taxes (which together can eat up the bulk of a big payday). The totals were compiled with the help of data from Pollstar, RIAA and others, in addition to interviews with managers, lawyers and concert promoters.

Forbes