Hello Experts,

Pardon my math skills but I could not make sense of how the 2013 phase out calculation is made. Kindly look at this example I grabbed from a website.

The relevant threshold for 2013 is $275,000 for head of household filers. Ms. Jones adjusted gross income of $300,000 exceeds the threshold of $275,000 by $25,000. We take this excess amount and divide by $2,500, which is 10. We multiply this by 2%, to get 20%. Ms. Jones reduces her personal exemptions by 20%.

My question is: when did 10 x 2% becomes 20%?

It's all the same with other sites, the amount just varies.

Please help this overly confused guy.

Thanks a lot