WASHINGTON — The Internal Revenue Service today issued guidance that allows certain estates of married individuals who died during the first six months of 2011 an extension of the deadline to make the portability election.

The portability election passes along a decedent's unused estate and gift tax exclusion amount to a surviving spouse. An extension is available to estates of married individuals with assets of $5 million or less, but only if the decedent died in the first six months of 2011, and the executor files Form 4768 requesting an extension no later than 15 months after the decedent's date of death.

The extra time is available to an estate even if the estate did not request an automatic six-month filing extension on Form 4768 prior to the regular nine-month filing deadline. As a result, these estates will now have until 15 months after the date of death, rather than the usual nine months, to make the election by filing an estate tax return on Form 706. Thus, the first estate tax returns for estates eligible to make the portability election (because the date of death is after Dec. 31, 2010) are now due on Monday, April 2, 2012.

Affected estates should submit both a properly-prepared Form 4768 and Form 706 to the IRS no later than 15 months after the decedent's date of death. Further details are in Notice 2012-21, posted today on 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 2016. 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 2016.

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

May 2 — Heavy highway vehicle use tax
File Form 2290 and pay the tax for vehicles first used in 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 2016. 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.

may 31 — Heavy highway vehicle use tax
File Form 2290 and pay the tax for vehicles first used in April.

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