Deadlines for 2018 Tax Returns in Calendar Year 2019

Estimated tax payments for the 2018 Tax Year (IRS Form 1040-ES)

These were due on April 17, June 15, and Sept. 17, 2018. The fourth and final estimated payment for the 2018 tax year is due on Jan. 15, 2019.

Estimated tax payments for the 2019 Tax Year (IRS Form 1040-ES):

Partnership returns (IRS Form 1065):

Estates and Trusts income tax returns (IRS Form 1041):

C-corporation income tax returns (IRS Form 1120):

April 15, 2019 for C corporations that operate on a calendar year
Extended deadline is Oct. 15, 2019
The deadline for C corp returns is the 15th day of the fourth month following the end of the corporation’s fiscal year if the corporation is on a fiscal rather than a calendar year.

S-corporation returns (IRS Form 1120-S):

March 15, 2019 for corporations on a calendar year
Extended deadline is Sept. 15, 2019
The deadline for S corp and partnership returns is the 15th day of the third month following the end of the fiscal year if they are on a fiscal year rather than a calendar year.

Foreign bank account reports (IRS FinCen Form 114):

January 15, 2019

January 31, 2019

Deadline for employers to mail out W-2 Forms to their employees and for businesses to furnish 1099 Forms reporting, among other things, non-employee compensation, bank interest, dividends, and distributions from a retirement plan

February 15, 2019

Deadline for financial institutions to mail out Form 1099-B relating to sales of stock, bonds, or mutual funds through a brokerage account, Form 1099-S relating to real estate transactions; and Form 1099-MISC if the sender is reporting payments in boxes 8 or 14

February 28, 2019

March 15, 2019

Deadline for corporate tax returns (Forms 1120, 1120-A, and 1120-S) for the year 2018, or to request automatic six-month extension of time to file (Form 7004) for corporations that use the calendar year as their tax year
Deadline to file partnership tax returns (Form 1065) or to request an automatic five-month extension of time to file (Form 7004)

April 15, 2019

Deadline to file individual tax returns (Form 1040) for the year 2018 or to request an automatic extension (Form 4868). An extension provides an extra six months to file your return. Payment of the tax is still due by April 15. You can submit payment for any taxes you owe 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 2018 tax year. You have until October 15 to fund a SEP-IRA or solo 401(k) if you get an extension.

First-quarter estimated tax payments due for the 2019 tax year
Deadline to file estate income tax or trust income tax returns (Form 1041) or to request an automatic five-month extension of time to file (Form 7004)

May 31, 2019

Deadline for financial institutions to send out Form 5498 to report balances in an individual retirement account

June 17, 2019

June 17, 2019

Deadline for U.S. citizens living abroad to file individual tax returns or file Form 4868 for an automatic 4-month extension

September 16, 2019

Third-quarter estimated tax payments due for the 2019 tax year
Final deadline to file corporate tax returns for the year 2018 if an extension was requested. (Forms 1120, 1120-A, 1120-S)

October 1, 2019

October 15, 2019

Final extended deadline to file individual tax returns for the year 2018 (Form 1040)
Last day the IRS will accept an electronically filed tax return for the year 2018. If you’re filing after this date, 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 2018 if you requested an automatic extension of time to file.