Tax Return Due Dates for 2019 Small Business Taxes

Including Due Dates for Extensions and Estimated Tax Payments

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Mark your business calendar! Here are the dates you need to remember for filing business taxes for the 2019 tax year. Details for each business type are included. with information on extension and estimated tax due dates.

2019 Tax Return Due Dates for Business Types

  • Sole proprietorship and single-member LLC tax returns on Schedule C (with the owner's personal tax return): April 15, 2020.
  • Partnership returns file a partnership tax return on Form 1065 with Schedule K-1 for each partner: March 16, 2020.
  • Multiple-member LLC returns filing as partnerships file on Form 1065 for the partnership and give Schedule K-1 to each member: March 15, 2020.
  • S corporation returns must be filed on Form 1120 S with Schedule K-1 for each member: March 15, 2020.
  • For corporations (not S corporations) with a fiscal year endings other than December 31, the deadline is the 15th day of the 4th month after the end of the fiscal year.

Why Tax Deadlines Change Each Year

If the tax return due date falls on a weekend or holiday, the due date is moved to the first following workday. Here are some examples:

  • If April 15 is on Sunday, the due date is Monday, April 16.
  • If April 15 is on a Saturday, the due date is Monday, April 17.
  • In some years, Monday, April 15 is a holiday, so the due date is Tuesday, April 16. 

Extension Deadlines for 2019 Business Tax Returns

Extensions have two deadlines:

  1. The deadline for filing the application, and
  2. The deadline for the extension to file. (The IRS doesn't grant addition extensions.)

Extension Application Deadlines:

If you want to for business taxes with your personal return. you are filing an extension application for the owner of a pass-through business in which the owner pays business taxes through a personal tax return, use Form 4868. In other words, this is the extension application for your personal tax return, which includes your business income.
This includes sole proprietors and single-member LLCs filing Schedule C, partners filing Schedule K-1, and S corporation shareholders filing Schedule K-1 (a different kind).

For personal 1040 forms, the IRS will automatically process an extension of time to file when you pay part or all of your estimated income tax electronically. 

If you are filing an extension application for a business tax return (partnership, S corporation, or corporation), use Form 7004 to file an extension application. The due date of the application is the tax return due date. The IRS will grant the extension automatically if:

  • You complete the form properly and file it by the original due date,
  • Make a proper estimate of tax (March 15 for the calendar year corporations), and
  • Pay any tax that is due.

An extension of time to file a tax return is not an extension of time to pay. You must always pay income taxes by the original due date.

Extension Deadlines

Deadlines for extended business and personal tax returns include the following dates. The usual automatic extension of time to file is six months.

  • Schedule C for sole proprietors and single-member LLCs: extension until October 15, 2019, filed with the owner's personal tax return.
  • Partnership and multiple-member LLC filing as a partnership: extension deadline is September 15, 2019.
  • Corporation and S corporation: extension deadline is September 16, 2019.

Estimated Tax Due Dates

If you must pay estimated taxes during the year, the due dates for the 2019 tax year are:

  • For income received for the period January 1 through March 31, the due date is April 15, 2019.
  • For income received for the period April 1 through May 31, the due date is June 15. 2019.
  • For income received for the period June 1 through August 31, the due date is September 15, 2019.
  • For income received for the period September 1 through December 31, the due date is January 15, 2020. 

More Details on 2019 Business Tax Returns

Below is a breakdown of the types of business entities explaining how each business type files a tax return:

Sole Proprietorship

A sole proprietorship business is an extension of the person running the business, so its year-end is December 31, and the tax return due date is the same as the individual's—April 15, 2019. Sole proprietor businesses file their business income tax return on Schedule C, which is part of the group of forms and schedules that go along with the person's personal tax return.

The due date for the 2019 Schedule C is April 15, 2020, because Schedule C is filed with the owner's individual tax return (Form 1040).

Single-Member LLC

A single member LLC (that is, an LLC with only one owner) is taxed like a sole proprietorship, using Schedule C to calculate net income, so the tax returns are due and taxes are payable on April 15, for the prior year. The due date for 2019 Schedule C forms, along with the owner's personal tax return, is April 15, 2020.

Partnership

A partnership return is filed as an information return on Form 1065, and tax is owed on the individual partner tax return. Form 1065 is now due on the 15th day of the 3rd month after the end of the partnership's tax year.

For a December 31st year-end, the due date is March 15. For 2019 tax return filing, the partnership return due date is March 15, 2019. March 15 is also the due date for individual partners to receive Schedule K-1 showing their individual share of the partnership income or loss, to be filed in April on their personal tax returns.

Multiple-Member Limited Liability Company (LLC)

Multiple-member LLCs may elect to be taxed as a corporation, S corporation, or partnership, but they are usually taxed as partnerships. If this is the case, the partnership filing and payment regulations above apply, including the March 15, 2019, deadline for giving partners their Schedule K-1.

S Corporation

S corporations must file an information report on Form 1120 S and provide a shareholder's K-1s by March 15, 2019. 

An S corporation must be elected by an existing corporation, by filing an election form 2553 at a specific time after the corporation is formed.

C Corporations

Corporations often choose any convenient date as their year-end (usually a quarter-end) date. For the 2019 tax year, corporation tax returns are due and taxes are payable on the 15th day of the 4th month after the end of the company's fiscal (financial) year. For example, a corporation with a year-end date of December 31 must file and pay taxes by April 15, 2020.

Article Sources

  1. IRS. "Instructions for Form 1065." When to File. Page 4. Accessed Dec. 10, 2019.

  2. IRS. "Instructions for Form 1065." When to File. Page 4. Accessed Dec. 10, 2019.

  3. IRS. "Instructions for Form 1120-S." When to File. Page 3. Accessed Dec. 10, 2019.

  4. IRS. "Instructions for Form 1120 U.S. Corporation Income Tax Return." When to File. Page 3. Accessed Dec. 10, 2019.

  5. IRS. "Form 4868 Application for Automatic Extension of Time To File U.S. Individual Income Tax Return" Accessed Dec. 10, 2019.

  6. IRS. "Instructions for Form 7004." When to File. Page 1. Accessed Dec. 10, 2019.

  7. IRS. "Instructions for Form 7004."Extension Period. Page 1. Accessed Dec. 10, 2019.

  8. IRS. "Publication 505 Withholding and Estimated Tax." When to Pay. Page 25.

  9. IRS. "Instructions for Schedule C Profit or Loss From Business." Accessed Dec. 10, 2019.

  10. IRS. "Instructions for Schedule C Profit or Loss From Business." Single-member LLC. Page 3.Accessed Dec. 10, 2019.

  11. IRS. "Instructions for Form 1065 U.S. Return of Partnership Income." Accessed Dec. 10, 2019.

  12. IRS. "Publication 541Partnerships." Limited Liability Company. Page 2. Accessed Dec. 10, 2019.

  13. IRS. "Shareholder K-1." Accessed Dec. 10, 2019.

  14. IRS. "Form 1120 U.S. Corporation Income Tax Return." Accessed Dec. 10, 2019.