Table of Contents
- Line 1—Tier I Employer Tax
- Line 2—Tier I Employer Medicare Tax
- Line 3—Tier II Employer Tax
- Line 4—Tier I Employee Tax
- Line 5—Tier I Employee Medicare Tax
- Line 6—Tier II Employee Tax
- Lines 7 Through 10—Tier I Taxes on Sick Pay
- Line 12—Adjustments to Taxes Based on Compensation
- Line 13—Total Railroad Retirement Taxes Based on Compensation
- Line 14—Total Deposits for the Year
- Line 15— Balance Due
- Line 16— Overpayment
- Third-Party Designee
- Who Must Sign
- Alternative Signature Method
- Paid Preparer Use Only

Enter the compensation (other than tips and sick pay) subject to Tier I employer tax in the Compensation column. Multiply by 6.2% and enter the result in the Tax column. Do not enter more than $106,800 per employee in the Compensation column on lines 1 and 7 combined.
Enter the compensation (other than tips and sick pay) subject to Tier I employer Medicare tax in the Compensation column. Multiply by 1.45% and enter the result in the
Tax column.
Enter the compensation (other than tips) subject to Tier II employer tax in the Compensation column. Do not enter more than $79,200 per employee. Multiply by 12.1% and enter the result in the Tax column.
Enter the compensation, including tips reported, subject to Tier I employee tax in the Compensation column. Multiply by 4.2% and enter the result in the Tax column. Do not enter more than $106,800 per employee in the Compensation column on lines 4 and 9 combined.
Stop collecting the 4.2% Tier I employee tax when the employee's wages (including sick pay) and tips reach the maximum for the year ($106,800 for 2011). However, your liability for Tier I employer tax on compensation continues until the compensation, not including tips, totals $106,800 for the year.
Enter the compensation, including tips reported, subject to Tier I employee Medicare tax in the Compensation column. Multiply by 1.45% and enter the result in the Tax column. For information on reporting tips, see Tips, earlier.
Enter the compensation, including tips reported, subject to
Tier II employee tax in the Compensation column. Only the first $79,200 of the employee's compensation for 2011 is subject to this tax. Multiply by 3.9% and enter
the result in the Tax column. For information on reporting tips, see Tips, earlier.

Enter any sick pay payments during the year that are subject to Tier I taxes and Tier I Medicare taxes in the Compensation column. Multiply by the rate for the line and enter the result in the Tax column for that line. For Tier I Employer taxes, do not enter more than $106,800 per employee in the Compensation column on lines 1 and 7 combined. For Tier I Employee taxes, do not enter more than $106,800 per employee in the Compensation column on lines 4 and 9 combined. Tier I Medicare taxes are not subject to this limitation.
If you are a railroad employer paying your employees sick pay, or a third-party payer who did not notify the employer of
the payments (thereby subject to the employee and employer tax), make entries on lines 7 through 10. If you are subject to
only the employer or employee tax, complete only the applicable lines. Multiply by the appropriate rates and enter the results
in the
Tax column.

Enter on line 12:
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A fractions of cents adjustment (see Fractions of cents, later);
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Credits for overpayments of penalty or interest paid on tax for earlier years; and
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Any uncollected Tier I Employee tax, Tier I Employee Medicare tax, and Tier II Employee tax on tips.
Enter the total of these adjustments in the Tax column. If you are reporting both an addition and a subtraction, enter only the difference between the two on line 12. If the net adjustment is negative, report the amount on line 12 using a minus sign, if possible. If your computer software does not allow the use of minus signs, you may use parentheses.
Do not include on line 12 the 2010 overpayment that is applied to this year's return (this is included on line 14).
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An explanation of the item the adjustment is intended to correct showing the compensation subject to Tier I and
Tier II taxes and their respective tax rates. -
The amount of the adjustment.
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The name and account number of any employee from whom employee tax was undercollected or overcollected.
-
How you and the employee have settled any undercollection or overcollection of employee tax.

Combine the amounts shown on lines 11 and 12 and enter the result on line 13.
Enter the total Form CT-1 taxes you deposited. Also, include any overpayment applied from your 2010 Form CT-1 and from Form CT-1 X.
Subtract line 14 from line 13. You should have a balance due only if line 13 is less than $2,500, unless the balance due is a shortfall amount for monthly schedule depositors as explained under the Accuracy of Deposits Rule, earlier.
Form CT-1(V), Payment Voucher, has instructions for making a payment with Form CT-1. You do not have to pay if line 15 is less than $1.
Enter the overpayment on the designated entry line. Then check the appropriate box to have the overpayment applied to your 2012 Form CT-1 or refunded to you. If line 16 is less than $1, we will send you a refund or apply it to your next return only on written request.
If you want to allow an employee of your business, a return preparer, or another third party to discuss your 2011
Form CT-1 with the IRS, check the “Yes” box in the Third-Party Designee section of Form CT-1. Also, enter the designee's name, phone number, and any five digits that person chooses as his or her
personal identification number (PIN).
By checking the “Yes” box, you are authorizing the IRS to speak with the designee to answer any questions relating to the processing of or the information reported on Form CT-1. You are also authorizing the designee to:
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Give the IRS any information that is missing from your return,
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Call the IRS for information about processing your return, and
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Respond to certain IRS notices that you have shared with the designee about math errors and return preparation. The IRS will not send notices to your designee.
You are not authorizing the designee to receive any refund check, bind you to anything (including additional tax liability), or otherwise represent you before the IRS. If you want to expand the designee's authority, see Pub. 947, Practice Before the IRS and Power of Attorney.
The authorization will automatically expire 1 year from the due date (without regard to extensions) for filing your 2011 Form CT-1. If you or your designee wants to revoke this authorization, send the revocation or withdrawal to the IRS office at which you file your Form CT-1. See Pub. 947 for more information.
Form CT-1 must be signed as follows:
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Sole proprietorship—The individual who owns the business.
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Corporation (including a limited liability company (LLC) treated as a corporation)—The president, vice-president, or other principal officer duly authorized to sign.
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Partnership (including an LLC treated as a partnership) or unincorporated organization—A responsible and duly authorized partner, member, or officer having knowledge of its affairs.
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Single member LLC treated as a disregarded entity for federal income tax purposes—The owner of the LLC or a principal officer duly authorized to sign.
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Trust or estate—The fiduciary.
Form CT-1 also may be signed by a duly authorized agent of the taxpayer if a valid power of attorney has been filed.
Corporate officers or duly authorized agents may sign Form CT-1 by rubber stamp, mechanical device, or computer software program. For details and required documentation, see Rev. Proc. 2005-39 at www.irs.gov/irb/2005-28_IRB/ar16.html.
A paid preparer must sign Form CT-1 and provide the information in the Paid Preparer Use Only section of Part I if the preparer was paid to prepare Form CT-1 and is not an employee of the filing entity. The preparer must give you a copy of the return in addition to the copy to be filed with the IRS.
If you are a paid preparer, write your preparer tax identification number (PTIN) in the space provided. Include your complete address. If you work for a firm, write the firm's name and the EIN of the firm. You can apply for a PTIN at www.irs.gov/ptin, or by filing Form W-12, IRS Paid Preparer Tax Identification Number (PTIN) Application and Renewal. You cannot use your PTIN in place of the EIN of the tax preparation firm.
Generally, you are not required to complete this section if you are filing the return as a reporting agent and have a valid Form 8655, Reporting Agent Authorization, on file with the IRS. However, a reporting agent must complete this section if the reporting agent offered legal advice, for example, by advising the client on determining whether its workers are employees or independent contractors for federal tax purposes.
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