WASHINGTON — The Internal Revenue Service today announced that interest rates will remain the same for the calendar quarter beginning July 1, 2013, as in the prior quarter. The rates will be:

  • three (3) percent for overpayments [two (2) percent in the case of a corporation];
  • three (3) percent for underpayments;
  • five (5) percent for large corporate underpayments; and
  • one-half (0.5) percent for the portion of a corporate overpayment exceeding $10,000.

Under the Internal Revenue Code, the rate of interest is determined on a quarterly basis. For taxpayers other than corporations, the overpayment and underpayment rate is the federal short-term rate plus 3 percentage points.

Generally, in the case of a corporation, the underpayment rate is the federal short-term rate plus 3 percentage points and the overpayment rate is the federal short-term rate plus 2 percentage points. The rate for large corporate underpayments is the federal short-term rate plus 5 percentage points. The rate on the portion of a corporate overpayment of tax exceeding $10,000 for a taxable period is the federal short-term rate plus one-half (0.5) of a percentage point.

The interest rates announced today are computed from the federal short-term rate determined during April 2013 to take effect May 1, 2013, based on daily compounding.

Revenue Ruling 2013-10, announcing the rates of interest, is attached and will appear in Internal Revenue Bulletin 2013-26, dated June 24, 2013.

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Upcoming Tax Dates

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

June 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 May.

June 14 — Regular method taxes

Deposit the tax for the last 16 days of May.

June 15 — Individuals
If you are a U.S. citizen or resident alien living and working (or on military duty) outside the United States and Puerto Rico, file Form 1040 and pay any tax, interest, and penalties due. If you want additional time to file your return, file Form 4868 to obtain 4 additional months to file - Details

June 15 — Individuals
Make a payment of your 2016 estimated tax if you are not paying your income tax for the year through withholding (or will not pay in enough tax that way). Use Form 1040-ES. This is the second installment - Details

June 15 — Corporations
Deposit the second installment of estimated income tax for 2016 - Details

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

June 15 — Nonpayroll withholding

If the monthly deposit rule applies, deposit the tax for payments in May.

June 27 — Communications and air transportation taxes under the alternative method.
Deposit the tax included in amounts billed or tickets sold during the first 16 days of May.

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

June 30 — Wagering tax
File Form 730 and pay the tax on wagers accepted during May.

June 30 — Heavy highway vehicle use tax
File Form 2290 and pay the tax for vehicles first used in May.

June 30 — Floor stocks tax for ozone depleting chemicals
(IRS No. 20). Deposit the tax for January 1, 2016.

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