The company said it was offering unlimited calls to landline and cell phones in the U.S. and Canada for $2.95 a month.
It also offers unlimited calls to phones in 34 countries including Australia, China, Germany, Japan and the United Kingdom, for $9.95 per month, it said.
Skype users in Europe can choose from unlimited plans ranging from 2.95 euros to 8.95 euros a month depending on the destination of calls, the company said.
Skype is one of eBay's biggest divisions. The parent firm took a $1.4 billion write-down off Skype's $4.3 billion price tag last year due to problems in making money from largely free Internet voice communications.