On July 31, 2015, President Obama signed into law P.L. 114-41, the “Surface Transportation and Veterans Health Care Choice Improvement Act of 2015.” Although this new law was primarily designed as a 3-month stopgap extension of the Highway Trust Fund and related measures, it includes a number of important tax provisions, including revised due dates for partnership and C corporation returns and revised extended due dates for some returns. This letter provides an overview of these provisions, which may have an impact on you, your family, or your business.

Revised Due Dates for Partnership and C Corporation Returns

Domestic corporations (including S corporations) currently must file their returns by the 15th day of the third month after the end of their tax year. Thus, corporations using the calendar year must file their returns by Mar. 15 of the following year. The partnership return is due on the 15th day of the fourth month after the end of the partnership’s tax year. Thus, partnerships using a calendar year must file their returns by Apr. 15 of the following year. Since the due date of the partnership return is the same date as the due date for an individual tax return, individuals holding partnership interests often must file for an extension to file their returns because their Schedule K-1s may not arrive until the last minute.

Under the new law, in a major restructuring of entity return due dates, effective generally for returns for tax years beginning after Dec. 31, 2015:

• Partnerships and S corporations will have to file their returns by the 15th day of the third month after the end of the tax year. Thus, entities using a calendar year will have to file by Mar. 15 of the following year. In other words, the filing deadline for partnerships will be accelerated by one month; the filing deadline for S corporations stays the same. By having most partnership returns due one month before individual returns are due, taxpayers and practitioners will generally not have to extend, or scurry around at the last minute to file, the returns of individuals who are partners in partnerships.

• C corporations will have to file by the 15th day of the fourth month after the end of the tax year. Thus, C corporations using a calendar year will have to file by Apr. 15 of the following year. In other words, the filing deadline for C corporations will be deferred for one month.

Keep in mind that these important changes to the filing deadlines generally won’t go into effect until the 2016 returns have to be filed. Under a special rule for C corporations with fiscal years ending on June 30, the change is deferred for ten years – it won’t apply until tax years beginning after Dec. 31, 2025.

Revised Extended Due Dates for Various Returns

Taxpayers who can’t file a tax form on time can ask the IRS for an extension to file the form. Effective for tax returns for tax years beginning after Dec. 31, 2015, the new law directs the IRS to modify its regulations to provide for a longer extension to file a number of forms, including the following:

• Form 1065 (U.S. Return of Partnership Income) will have a maximum extension of six-months (currently, a 5-month extension applies). The extension will end on Sept. 15 for calendar year taxpayers.

• Form 1041 (U.S. Income Tax Return for Estates and Trusts) will have a maximum extension of five and a half months (currently, a 5-month extension applies). The extension will end on Sept. 30 for calendar year taxpayers.

• The Form 5500 series (Annual Return/Report of Employee Benefit Plan) will have a maximum automatic extension of three and a half months (under currently law, a 2½ month period applies). The extension will end on Nov. 15 for calendar year filers.

FinCEN Report Due Date Revised

Taxpayers with a financial interest in or signature authority over certain foreign financial accounts must file FinCEN Form 114, Report of Foreign Bank and Financial Accounts (FBAR). Currently, this form must be filed by June 30 of the year immediately following the calendar year being reported, and no extensions are allowed.

Under the new law, for returns for tax years beginning after Dec. 31, 2015, the due date of FinCEN Report 114 will be Apr. 15 with a maximum extension for a 6-month period ending on Oct. 15. The IRS may also waive the penalty for failure to timely request an extension for filing the Report, for any taxpayer required to file FinCEN Form 114 for the first time.