A U.S. citizen or resident files this form to request an automatic extension of time to file a U.S. individual income tax return. Once you've requested the extension, you automatically have an additional six months beyond the original filing deadline.Remember that a tax extension only gives your more time to file, not to pay. The taxpayer is automatically provided a six-month extension of time to file. This is an extension of time to file, not to pay. You can file Form 4868 electronically or as a paper form. IRS Form 4868 allows taxpayers to apply for a six-month extension beyond the tax filing deadline.