E-Filing and Paper Filing
An individual must file federal income tax return, if his gross income is above threshold limit (Standard deduction + personal exemptions).
In case of Self-Employment if net earnings are $400 or more in that case he should file Tax Return.
The process of submitting tax returns over the Internet, using tax preparation software that has been pre-approved by the relevant tax authority, called IRS. E-filing has manifold benefits; the taxpayer can file a tax return from the comfort of his place, at any convenient time, once the tax agency begins accepting returns. A return sent using IRS e-file is on time if the authorized electronic return transmitter postmarks the transmission by the due date.
If you mail a paper Form 1040, U.S. Individual Income Tax Return (PDF), it can take 6 to 8 weeks to process your return. The IRS considers a paper return “on time” when it arrives with a proper address and sufficient postage and bears a postmark on or before the due date. Mailing Addresses will be provided based on which state you reside. For paper filing you will receive your refund amount in form of a paper check.