WASHINGTON — The Internal Revenue Service today reminded Boston area taxpayers and others affected by the April 15 Boston Marathon explosions that their individual income tax returns and tax payments are due Monday, July 15.

This relief applies to all individual taxpayers who live in Suffolk County, Mass., including the city of Boston. It also includes victims, their families, first responders, others impacted by this tragedy who live outside Suffolk County and taxpayers whose tax preparers were adversely affected.

The relief gives eligible taxpayers until July 15, 2013, to file their 2012 returns and pay any taxes normally due April 15. No filing and payment penalties will be due as long as returns are filed and payments are made by July 15. By law, interest, currently at the annual rate of 3 percent compounded daily, will still apply to any payments made after the April deadline.

The IRS automatically provided this extension to anyone living in Suffolk County. Eligible taxpayers living outside Suffolk County must have claimed this relief by calling 866-562-5227 before filing a return or making a payment. Eligible taxpayers who receive penalty notices from the IRS can also call this number to have these penalties abated.

Eligible taxpayers who need more time to file their returns may receive an additional extension to Oct. 15, 2013, by filing Form 4868 by Monday, July 15.

Taxpayers with questions unrelated to the Boston tragedy should visit IRS.gov, or contact the regular IRS toll-free number at 800-829-1040.

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Upcoming Tax Dates

August 1 — Form 720 taxes
File Form 720 for the second quarter of 2016.

August 1 — Wagering tax
File Form 730 and pay the tax on wagers accepted during June.

August 1 — Heavy highway vehicle use tax
File Form 2290 and pay the tax for vehicles first used in June.

August 1 — Social security, Medicare, and withheld income tax
File Form 941 for the second quarter of 2016. Deposit or pay any undeposited tax under the accuracy of deposit rules.

August 1 — Certain small employers
Deposit any undeposited tax if your tax liability is $2,500 or more for 2016 but less than $2,500 for the second quarter.

August 1 — Federal unemployment tax
Deposit the tax owed through June if more than $500.

August 1 — All employers
If you maintain an employee benefit plan, such as a pension, profitsharing, or stock bonus plan, file Form 5500 or 5500EZ for calendar year 2015. If you use a fiscal year as your plan year, file the form by the last day of the seventh month after the plan year ends.

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

August 10 — Social security, Medicare, and withheld income tax
File Form 941 for the second quarter of 2016. This due date applies only if you deposited the tax for the quarter timely, properly, and in full.

August 10 — 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 July.

August 12 — Regular method taxes
Deposit the tax for the last 16 days of July.

August 15 — Social security, Medicare, and withheld income tax
If the monthly deposit rule applies, deposit the tax for payments in July.

August 15 — Nonpayroll withholding
If the monthly deposit rule applies, deposit the tax for payments in July.

August 25 — Communications and air transportation taxes under the alternative method.
Deposit the tax included in amounts billed or tickets sold during the last 16 days of July.

August 29 — Regular method taxes
Deposit the tax for the first 15 days of August.

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

August 31 — Wagering tax
File Form 730 and pay the tax on wagers accepted during July.

View More Tax Dates