If you're over the income gap, you'll probably pay a filing fee in addition to what you fork over to use a company's tax software.

FORBES: In The Future, Tax Filing Will Be Easy

Indian tax authorities want to treat payments made for supplying software from its parent company in Finland for devices produced in India as royalties, but Nokia handles the payments differently.

WSJ: Nokia Gets Reprieve in India Tax Case

The company controls about 75 percent of the market for desktop tax preparation software.

NPR: TurboTax Prepared for Filing Crunch

For example, Ohio, Texas, New York South Carolina and Washington tax computing services directly, while Utah and the City of Chicago tax the cloud only when deals involve the transfer of control or possession of software as well as computing services, according to national tax-services company WTAS. At least two states, Vermont and Idaho, have recently passed rules to explicitly exempt cloud-based services from state sales tax.

FORBES: Massachusetts Proposes Taxing Cloud Computing Services