The Internal Revenue Service announced today the number of tax returns e-filed by businesses rose nearly 9 percent this year, continuing the growth in the number of corporate and partnership returns filed electronically. This year, an additional 625,000 corporations and partnerships chose to e-file their tax returns.

As of Sept. 20, almost 8 million corporations and partnerships e-filed their income tax returns. The IRS estimates that e-file accounts for 77 percent of all corporate and partnership returns filed during 2015. Many corporations and partnerships operating on a calendar year receive filing extensions. The due date for filing a return after filing for an extension is usually Sept. 15.

Most large corporations and partnerships are required to e-file.

Large and mid-size corporations, generally those with $10 million or more in total assets, are required to electronically file their Forms 1120 or 1120S. Partnerships with more than 100 partners (Schedules K-1) are also required to e-file their tax returns. The IRS is seeing growth in e-filing by all business segments.

This year, a record 100,000 large corporations e-filed their returns, an increase of 8 percent compared to the same time last year. The greatest rate of growth in e-filing among these businesses is by large partnerships. This year, 142,237 large partnerships e-filed their tax returns, up almost 16 percent from the same time last year.

Tax Returns e-filed by Corporations and Partnerships

Category of e-filers Sept. 21, 2014 Sept. 20,2015 %Change
Large Corporation Tax Returns 92,494 100,052 8.2%
Other Corporate Returns 4,373,597 4,720,698 7.9%
Total Corporate Returns 4,466,091 4,820,750 7.9%
Large Partnership Tax Returns 122,879 142,237 15.8%
Other Partnership Returns 2,640,319 2,891,466 9.5%
Total Partnerships 2,763,198 3,033,703 9.8%
Total Returns 7,229,289 7,854,453 8.6%
Corporations and partnerships can get more information about IRS e-file at IRS.gov.
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Upcoming Tax Dates

May 2 — Social security, Medicare, and withheld income tax
File Form 941 for the first quarter of 2017. Deposit or pay any undeposited tax under the accuracy of deposit rules. If your tax liability is less than $2,500, you can pay it in full with a timely filed return. If you deposited the tax for the quarter timely, properly, and in full, you have until May 10 to file the return.

May 2 — Federal unemployment tax.
Deposit the tax owed through March if more than $500.

May 2 — Form 720 taxes
File Form 720 for the first quarter of 2017.

May 2 — Wagering tax
File Form 730 and pay the tax on wagers accepted during March.

May 10 — Employees who work for tips
If you received $20 or more in tips during April, report them to your employer Details

May 10 — Social security, Medicare, and withheld income tax
File Form 941 for the first quarter of 2017. This due date applies only if you deposited the tax for the quarter timely, properly, and in full.

May 11 — Communications and air transportation taxes under the alternative method
Deposit the tax included in amounts billed or tickets sold during the first 15 days of April.

May 13 — Regular method taxes
Deposit the tax for the last 15 days of April.

May 16 — Social security, Medicare, and withheld income tax
If the monthly deposit rule applies, deposit the tax for payments in April.

May 16 — Nonpayroll withholding
If the monthly deposit rule applies, deposit the tax for payments in April.

May 25 — Communications and air transportation taxes under the alternative method
Deposit the tax included in amounts billed or tickets sold during the last 15 days of April.

May 27 — Regular method taxes
Deposit the tax for the first 15 days of May.

May 31 — Wagering tax
File Form 730 and pay the tax on wagers accepted during April.

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