WASHINGTON — The Internal Revenue Service and its Security Summit partners today issued an alert to taxpayers and tax professionals to be on guard against fake emails purporting to contain an IRS tax bill related to the Affordable Care Act.

The IRS has received numerous reports around the country of scammers sending a fraudulent version of CP2000 notices for tax year 2015. Generally, the scam involves an email that includes the fake CP2000 as an attachment. The issue has been reported to the Treasury Inspector General for Tax Administration for investigation.

The CP2000 is a notice commonly mailed to taxpayers through the United States Postal Service. It is never sent as part of an email to taxpayers. The indicators are:

  • These notices are being sent electronically, even though the IRS does not initiate contact with taxpayers by email or through social media platforms;
  • The CP 2000 notices appear to be issued from an Austin, Texas, address;
  • The underreported issue is related to the Affordable Care Act (ACA) requesting information regarding 2014 coverage;
  • The payment voucher lists the letter number as 105C.

The fraudulent CP2000 notice included a payment request that taxpayers mail a check made out to "I.R.S." to the "Austin Processing Center" at a Post Office Box address. This is in addition to a "payment" link within the email itself.

IRS impersonation scams take many forms: threatening telephone calls, phishing emails and demanding letters. Learn more at Reporting Phishing and Online Scams.

Taxpayers or tax professionals who receive this scam email should forward it to phishing@irs.gov and then delete it from their email account.

Taxpayers and tax professionals generally can do a keyword search on IRS.gov for any notice they receive. Taxpayers who receive a notice or letter can view explanations and images of common correspondence on IRS.gov at Understanding Your IRS Notice or Letter

To determine if a CP2000 notice you received in the mail is real, see the Understanding Your CP2000 Notice, which includes an image of a real notice.

A CP2000 is generated by the IRS Automated Underreporter Program when income reported from third-party sources such as an employer does not match the income reported on the tax return. It provides extensive instructions to taxpayers about what to do if they agree or disagree that additional tax is owed.

It also requests that a check be made out to "United States Treasury" if the taxpayer agrees additional tax is owed. Or, if taxpayers are unable to pay, it provides instructions for payment options such as installment payments.

The IRS and its Security Summit partners — the state tax agencies and the private-sector tax industry — are conducting a campaign to raise awareness among taxpayer and tax professionals about increasing their security and becoming familiar with various tax-related scams. Learn more at Taxes. Security. Together. or Protect Your Clients; Protect Yourself.

Taxpayers and tax professional should always beware of any unsolicited email purported to be from the IRS or any unknown source. They should never open an attachment or click on a link within an email sent by sources they do not know.

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Upcoming Tax Dates

October 9 — Everyone
Federal Holiday (Columbus Day) - Details

October 11 — Employees who work for tips
If you received $20 or more in tips during September, report them to your employer - Details

October 15 — Individuals
If you have an automatic 6-month extension to file your income tax return for 2017, file Form 1040, 1040A, or 1040EZ and pay any tax, interest, and penalties due - Details

October 15 — Corporations
File a 2017 calendar year income tax return (Form 1120) and pay any tax, interest, and penalties due. This due date applies only if you timely requested an automatic 6-month extension Details

October 15 — Partnerships
Electing large partnerships: File a 2017 calendar year return (Form 1065-B). This due date applies only if you were given an additional 6-month extension - Details

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

October 31 — Certain small employers
Deposit any undeposited tax if your tax liability is $2,500 or more for 2017 but less than $2,500 for the third quarter.

October 31 — Federal unemployment tax
Deposit the tax owed through 09-if more than $500.

October 31 — Social security, Medicare, and withheld income tax.
File Form 941 for the third quarter of 2018. 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 11-10 to file the return.

View More Tax Dates