Important Tax Dates for 2017

March 15, 2017

• Deadline for corporate tax returns (Forms 1120, 1120A, and 1120S) for the year 2016, or to request an automatic 6-month extension of time to file (Form 7004) for corporations who use the calendar year as their tax year.
• Final deadline to file an amended corporate tax return (Form 1120X) for 2013 and still claim a tax refund. Refunds expire three years from the original due date of the return.
• Deadline to file partnership tax returns (Form 1065) or to request an automatic 5-month extension of time to file (Form 7004).

April 18, 2017

• Deadline to file individual tax returns (Form 1040, 1040A, or 1040EZ) for the year 2016 or to request an automatic extension (Form 4868). An extension gives you an extra six months to file your return. Payment of the tax is still due by April 18. You can submit your payment for tax along with the extension form.
• Last day to make a contribution to traditional IRA, Roth IRA, Health Savings Account, SEP-IRA or solo 401(k) for the 2016 tax year. You have until October 17 to fund a SEP-IRA or solo 401(k) if you get an extension.
• 1st quarter estimated tax payments due for the 2017 tax year.
• Final deadline to file an original tax return (Form 1040) for tax year 2013 and still claim a tax refund, as refunds expire three years from the original due date of the tax return.
• Final deadline to file amended tax return (Form 1040X) for tax year 2013 and still claim a tax refund. (Be sure to mail the amended return well before April 18th to make sure your tax refund will be processed in a timely manner. Also,  be sure to obtain proof of mailing, such as a certified mail with return receipt).
• Deadline to file estate income tax or trust income tax returns (Form 1041) or to request an automatic 5-month extension of time to file (Form 7004).
• Final deadline for estates, trusts, or partnerships to file an amended tax return and still claim a tax refund for the year 2013. Refunds expire three years from the original due date of the tax return.

May 31, 2017

• Deadline for financial institutions to send out Form 5498 to report balances in an individual retirement account for the year 2016.

June 15, 2017

• 2nd quarter estimated tax payments due for the 2016 tax year.

June 30, 2017 

• Deadline to file Foreign Bank Account Report for the year 2016. This report is required if you have over $10,000 (in aggregate) held in foreign bank accounts. Foreign Bank Account Reports must be filed electronically. Extensions of time are available starting in 2017.

September 15, 2017

• 3rd quarter estimated tax payments due for the 2016 tax year.
• Final deadline to file corporate tax returns for the year 2016 if an extension was requested. (Forms 1120, 1120A, 1120S).

October 1, 2017

• Deadline for self-employed persons or small employers to establish a SIMPLE-IRA for the year 2016.

October 16, 2017

• Final deadline to file individual tax returns for the year 2016. (Forms 1040, 1040A, 1040EZ).
• Last day the IRS will accept an electronically filed tax return for the year 2016. If filing after October 15, you'll have to mail in your tax return for processing.
• Final deadline to fund a SEP-IRA or solo 401(k) for tax year 2016 if you requested an automatic extension of time to file.