Due Dates for Filing LLC and Partnership Tax Returns in 2019

The due date for Single-member LLC returns on Schedule C is 17th April 2019 and the due date for partnership returns with Schedule K-1s is 15th March 2019. Extension for Single-member LLCs is until 15th October 2019 filed along with personal tax return and the extension deadline for partnership is 17th September 2019.

Changes in the Return Due Dates for Partnership

From the 2018 tax year, which is to be filed in 2019, the partnership tax returns filed on Form 1065 should be filed by the 15th day of the third month after the end date of the tax year. For most partnership returns due date is 15th April. The past deadline provides a chance for the partners to receive the Schedule K-1s before the personal tax return due date.

2019 Business Tax Return Due Dates for 2018 Tax Year

When the tax return due date comes on a holiday or a weekend, then the due date is changed to the 1st following office day. For instance, if the due date is 15th April and it comes on Sunday, then the due date will be 16th April, Monday. The tax return due date for personal and partnership taxes is 15th April. But in the tax year 2019, the due date comes on the 15th of April, which is on Sunday, and the 17th of April, Monday is a holiday in the District of Columbia, hence the due date is on 17th April, Tuesday.

Sole Proprietorship LLC Tax Deadline

A single-member LLC is taxed as similar to a sole proprietorship using Schedule C to compute the net income.

  • Single member/individual tax return due date is 15th April 2019.
  • Single member/individual tax return extension deadline is 15th October 2019.
Partnership Tax Deadline

A partnership return is filed as an information return on the IRS 1065 Form and the tax is owed on the individual partner tax return.

  • The tax deadline for the partnership is on 15th March 2019.
  • The extension tax deadline for the partnership is 16th September 2019. 

It is also the due date for Individual partners to get Schedule K1 specifying their individual share of the partnership income, which is to be filed in April on their personal tax returns.

Multiple-member LLC Tax Deadlines

Multiple member LLCs are taxed as similar to partnerships, so the filing and payment regulations stated for partnership are applicable, including the March 15th, 2019 deadline Schedule K1.
The extension tax deadline is September 16, 2019

S Corp Tax Deadlines
  • S Corp tax deadline is March 15th, 2019
  • S Corp Extension tax deadline is September 16, 2019
C Corporation Tax Deadlines
  • C Corp tax deadline is April 15, 2019
  • C Corp extension tax deadline is October 15, 2019