WASHINGTON — The Internal Revenue Service today announced a three-month tax filing and payment extension to Boston area taxpayers and others affected by Monday's explosions.

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.

"Our hearts go out to the people affected by this tragic event," said IRS Acting Commissioner Steven T. Miller. "We want victims and others affected by this terrible tragedy to have the time they need to finish their individual tax returns."

Under the relief announced today, the IRS will issue a notice giving 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, 2013. 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 will automatically provide this extension to anyone living in Suffolk County. If you live in Suffolk County, no further action is necessary by taxpayers to obtain this relief. However, eligible taxpayers living outside Suffolk County can claim this relief by calling 1-866-562-5227 starting Tuesday, April 23, and identifying themselves to the IRS 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 July 15, 2013.

Taxpayers with questions unrelated to the Boston tragedy should visit IRS.gov, or contact the regular IRS toll-free number at 1-800-829-1040.

It's free and easy to file IRS Form 4868 with TaxACT. Start your TaxACT return now and follow these simple steps

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Upcoming Tax Dates

July 1 Occupational excise taxes
File Form 11C to register and pay the annual tax if you are in the business of accepting wagers.

July 4 Everyone
Federal Holiday (Independence Day) - Details

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

July 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 June.

July 14 Regular method taxes
Deposit the tax for the last 15 days of June.

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

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

July 27 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 June.

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

July 31 Social security, Medicare, and withheld income tax
File Form 941 for the second quarter of 2015. Deposit or pay any undeposited tax under the accuracy of deposit rules.

July 31 Certain small employers
Deposit any undeposited tax if your tax liability is $2,500 or more for 2015 but less than $2,500 for the second quarter.

July 31 Federal unemployment tax
Deposit the tax owed through June if more than $500.

July 31 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 2014. 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.

July 31 Form 720 taxes
File Form 720 for the second quarter of 2015.

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

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

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