2018 Tax Deadlines for Small Businesses

By Cameron McCool on January 4, 2018

2018 tax deadlines

Filing deadlines can creep up on you, and there’s nothing more frustrating than having to pay a fine that could have been avoided.

Below is a list of tax filing dates and important deadlines for the 2018 tax year.

Take a few minutes to save each relevant filing date to your calendar, and stay ahead of the IRS.


January 17, 2018

Estimated Quarterly Payments

Say a final goodbye to 2017. The fourth (and final) estimated quarterly tax payment for the previous tax year is due today.

Note: Individuals, you do not have to file this payment due on January 17, 2017—so long as you file your 2016 tax return by January 31, 2018 and pay the remaining balance owed with your return (see Form 1040-ES for details).

Forms:


January 31, 2018

Form W-2 Filing Deadline

Heads up: Don’t let this deadline surprise you. It’s only been in place since the 2016 filing year.

If you have employees, you’ll need to fill out two copies of Form W-2 for each one.

One W-2 must be submitted to the IRS. The other must be sent to the employee. The deadline for both is January 31, 2017.

Forms:

Form 1099-MISC Copy A Filing Deadline

If you work with independent contractors, the new January 31 filing deadline also applies to certain types of 1099s.

The IRS explains. But, in short: If you are filing a Form 1099-MISC and reporting amounts in Box 7, this deadline applies to you.

Copy A must be filed with the IRS by this date. Copy B must be furnished to the contractor no later than February 15, 2018.

If you don’t have amounts in Box 7 on your Form 1099, February 28 is the deadline for paper filing, or March 31 for electronic filing.

Forms:


February 15, 2018

Form 1099-MISC Copy B Filing Deadline

If you are filing a 1099-MISC, regardless of whether Box 7 is filled, you must get Copy B to the contractor in question no later than February 15, 2018.


February 28, 2018

Form 1099-MISC Copy A Filing Deadline

If you work with independent contractors, this filing deadline applies to certain types of 1099s.

The IRS offers a thorough explanation. But, in short: If you are filing Form 1099-MISC and don’t have amounts in Box 7, February 28 is the deadline for paper filing. March 31 is the deadline for electronic filing.

You must deliver one copy to the IRS, and one copy to your contractor.

If you are filing a Form 1099-MISC and reporting amounts in Box 7, this deadline doesn’t apply to you. You need to file earlier, on January 31, 2018.

Forms:


March 15, 2018

S Corporation and Partnership Tax Returns Due

Today is the deadline to file your S corporation tax return (Form 1120-S) or Partnership return (Form 1065).

Note that S corporations and Partnerships do not pay taxes on their income. That tax is paid on the individual incomes of the shareholders or partners, respectively.

If you need more time to file your tax return (the paperwork), you can also file for an extension.

Forms:


April 17, 2018

Estimated Quarterly Payments

So it begins. If your business pays taxes on a quarterly basis, the first 2018 estimated quarterly tax payment is due today.

Forms:

Individual Tax Returns Due

Today is the deadline to file Individual tax returns (Form 1040, 1040A, or 1040EZ). For an automatic six-month extension, you file Form 4868 and, by today, deposit your estimated taxes owed.

If you’re a Sole Proprietor filing Schedule C on your personal tax returns, the April 17, 2018 deadline applies to you too.

Corporation Tax Returns Due

Today is the deadline to file Corporation tax returns (Form 1120). For an automatic five-month extension, file Form 7004 and deposit, by today, your estimated taxes owed.

Forms:


June 15, 2018

Estimated Quarterly Payments

The second 2018 estimated quarterly tax payment is due today.

Forms:


September 17, 2018

Estimated Quarterly Payments

The third 2018 estimated quarterly tax payment is due today.

Forms:


November 1, 2018

Start Making Tax Moves

End of year tax moves can help grow your business and reduce your taxable income for the year. If you haven’t done so already, now’s the time to plan and take action.


December 31, 2018

Tax Moves Deadline

Today is the final day to make any tax moves for the 2018 tax year.

Set Up a Solo 401 (k)

If you are self-employed, today is the deadline to set up a solo 401 (k).


The filing dates listed above are relevant to your business’s federal tax return. If you plan to file for an extension of state taxes, you’ll need to do that separately.

Depending on the nature of your business, you may also need to meet other filing deadlines and requirements not listed in this post. Do your research and work with your accountant early on to ensure you’re well aware of your filing obligations throughout the year.

This post is to be used for informational purposes only and does not constitute legal, business, or tax advice. Each person should consult his or her own attorney, business advisor, or tax advisor with respect to matters referenced in this post. Bench assumes no liability for actions taken in reliance upon the information contained herein.

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Cameron McCool

Cameron writes for Bench, the online bookkeeping service for entrepreneurs.