TOP 10 BEST-PAID AUTHORS
1. JK Rowling - $300m (£170m)
2. James Patterson - $50m (£28m)
3. Stephen King - $45m (£25m)
4. Tom Clancy - $35m (£20m)
5. Danielle Steel - $30m (£17m)
6. John Grisham - $25m (£14m)
6. Dean Koontz - $25m (£14m)
8. Ken Follett - $20m (£11m)
9. Janet Evanovich - $17m (£10m)
10. Nicholas Sparks - $16m (£9m)
Source: Forbes magazine
JK Rowling has sold more than 400 million copies of her books worldwide
JK Rowling is the world's highest-earning author, making more than £5 every second over the past year, US business magazine Forbes has announced.
The Harry Potter writer, who made a total of $300m (£170m) last year, wrote the first of her best-selling books about the boy wizard in 1997.
Her income was six times more than literature's next-biggest earner, James Patterson, of Along Came A Spider fame.
The magazine described her work as "a children's literary sensation".
A Forbes spokesman said: "It was wizardry that transformed JK Rowling from a destitute single mother on welfare into a best-selling billionaire.