The tax filing deadline in the United States is typically April 15th. However, the deadline may vary slightly depending on weekends and holidays. It's always a good idea to double-check with the IRS or your local tax authority for the exact deadline.

Yes, you can file for a tax extension using Form 4868 (for U.S. federal taxes). This will give you an additional six months to file your tax return. Keep in mind that while an extension grants you more time to file, it does not extend the deadline for paying any taxes owed. You are still required to estimate and pay your tax liability by the original deadline.

To prepare your tax return, you will need to gather all relevant financial documents, such as W-2 forms, 1099 forms, and receipts for deductions. You can use tax preparation software, hire a professional tax preparer, or fill out the forms manually. The method you choose will depend on the complexity of your tax situation and personal preference.