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Outline

The Colorado 104X form, officially known as the Amended Colorado Income Tax Return, serves as an essential tool for taxpayers seeking to rectify mistakes made on their original income tax filings. This form is specifically designed for individuals who need to amend their 2010 tax returns, allowing them to correct income amounts, deductions, credits, and other relevant figures. By completing the 104X, taxpayers can accurately report any changes that may impact their overall tax liability or refund status. The form includes specific lines to calculate the amount owed or the refund due, depending on the adjustments made. Taxpayers must also provide an explanation of the changes alongside any necessary attachments, such as supporting documents or certifications. Notably, the 104X form accommodates various scenarios, including changes in filing status and adjustments resulting from federal tax determinations. Understanding the requirements and implications of the 104X is crucial for ensuring compliance with state tax laws and maximizing potential refunds or minimizing owed amounts.

Sample - Colorado 104X Form

FORM 104X INSTRUCTIONS
The 2010 Form 104X, Amended Colorado Income Tax Return, is used
to correct your 2010 individual income tax return. For more information
or any questions pertaining to income, additions, subtractions, credits,
etc., refer
to the income tax book for 2010, or call the Department of
Revenue at (303) 238-SERV (7378).
You can also obtain forms and
information
from the Web site at www.TaxColorado.com
Complete Form 104X showing the correct amounts for income,
additions, subtractions, taxes and credits.
AMOUNT OWED
Lines 30 through 36 compute the amount owed to
the state on the
amended return. Any decrease in the amount of the overpayment
(line 30) or increase in the amount owed (line 31) will indicate that
an amount is owed with the amended return.
REFUND AMOUNT
Lines 37 through 41 compute the amount of credit available on the
amended return. Any increase in the amount of the overpayment
(line 37) or decrease in the amount owed (line 38) will indicate that an
overpayment is available with the amended return. The overpayment
can be credited to estimated tax (line 40) for the tax year following the
period on the amended return, or can be requested as a refund (line 41).
Attachments:
Attach an explanation of the changes to your return and, if applicable,
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
the amended return even if there is no change to that credit or tax
attribute. Part-year residents and nonresidents attach corrected Form
104PN. If this amended return is the result of an adjustment made by the
Internal Revenue Service attach a copy of the federal revenue agent’s
report with supporting schedules. To expedite your refund, attach a
copy of the federal record of account to support any changes to federal
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in the United States.
Direct Deposit:
Complete the direct deposit information if you want your refund
deposited directly into your account at a United States bank or other

Foreign Address:
If you are entering an address for a foreign country, use the “State”
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
the city.
Deceased taxpayer:

requesting a refund, attach a copy of DR 0102 — Claim for Refund

the deceased box after the decedent’s name.
A federal net operating loss carried back to a tax year beginning
on or after January 1, 1987, or carried forward will be allowed for
Colorado income tax purposes. A nonresident or a part-year resident
may carry back or forward that portion of his federal net operating
loss that is from Colorado sources or which relates to the Colorado
portion of the year.
Statute of limitations:

four years from the original due date of the return or three years from
the date of last payment of tax for the year involved, whichever is later.
The statute of limitations for claiming a refund that is the result of a
loss carry-back or an investment tax credit carry-back is four years
from the due date of the return for the year in which the loss or credit
originated. See FYI General 18.
Protective Claims:

open pending the outcome of a court case or tax determination in
another state that affects your Colorado return, check the protective
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           
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under a different primary Social Security Number (SSN).

joint to single or married separate, the taxpayer whose SSN was

their amended return. The taxpayer whose SSN was listed second on


Interest rates on additional amounts due are as follows:
January 1 through December 31, 2011.
Tax due paid without billing, or paid within 30 days of billing ....... 3%
Tax due paid after 30 days of billing ............................................. 6%
Mail and make checks payable to:
Colorado Department of Revenue
Denver CO 80261-0005
AS AMENDED
1 ENTER AMOUNT from federal Form 1040, line 43; or from federal Form 1040 A, line 27; or from federal
Form 1040 EZ, line 6 (Federal Taxable Income) .........................................................................................
1 .00
ADDITIONS TO FEDERAL TAXABLE INCOME
.002
Enter the state income tax deduction, if any, from line 5 of Schedule A of your federal Form 1040,
................ 2
3 Other additions, explain: .............................................................................................................................. 3 .00
4 Total of lines 1 through 3................................................................................................................................ 4 .00
SUBTRACTIONS FROM FEDERAL TAXABLE INCOME
.005 Enter the state income tax refund, if any, you reported on line 10 of your federal Form 1040 .................... 5
6 United States government interest .............................................................................................................. 6 .00
7 Pension-annuity subtraction, taxpayer......................................................................................................... 7 .00
8 Pension-annuity subtraction, spouse ........................................................................................................... 8 .00
9 Colorado source capital gain (5 year assets acquired on or after 5/9/94) .................................................. 9 .00
10 Tuition program contribution ....................................................................................................................... 10 .00
11 Qualifying charitable contribution ................................................................................................................ 11 .00
12 Other subtractions, see instructions and check applicable box: PERA contribution made in 1984–1986;
DPSRS contributions made in 1986;  
 ................................................................................................................ 12 .00
13 Total of lines 5 through 12.............................................................................................................................. 13 .00
14 COLORADO TAXABLE INCOME, line 4 minus line 13 .............................................................................. 14 .00
GO TO THE TAX TABLE ON PAGES 22 AND 23 OF THE FORM 104 BOOKLET WITH YOUR TAXABLE INCOME FROM LINE 14 TO FIND YOUR TAX.
FULL-YEAR RESIDENTS ENTER YOUR TAX ON LINE 15.
PART-YEAR RESIDENTS AND NONRESIDENTS GO TO FORM 104PN.
LAST NAME FIRST NAME AND INITIAL DECEASED SOCIAL SECURITY NUMBER
Yourself
YES
Spouse, if joint
YES
Mailing Address Your telephone number
( )
City State ZIP Code Email
FORM 104X (10/26/10)
COLORADO DEPARTMENT OF REVENUE
DENVER CO 80261-0005
(0015)
2010 FORM 104X
AMENDED COLORADO INDIVIDUAL INCOME TAX RETURN
Reason for amended return (check one):
Investment credit carryback from tax year ending _________________
_
_____
________
Federal net operating loss carryback from tax year ending _________________________
Federal net capital loss carryback from tax year ending __________________________
Protective claim, attach explanation Other, attach explanation  Changing residency status
INCOME TAX, PREPAYMENTS AND CREDITS
15 COLORADO TAX from the tax table.
Part-year residents and nonresidents enter tax from line 36, Form 104PN ................................
15 .00
STAPLE W-2, W2-G, AND
1099 FORMS HERE
(only if Colorado tax withheld
is reported on the form)
16 Alternative minimum tax from Form 104AMT ......................................................................... 16
.00
17 Recapture of prior year credits ............................................................................................... 17
.00
18 Total of lines 15 through 17........................................................................................................ 18 .00
19 Total non-refundable credits from line 47, form 104CR (may not exceed total tax on lines 15 and 16) 19 .00
20 Net Tax, line 18 minus line 19 .................................................................................................... 20 .00
21 COLORADO INCOME TAX WITHHELD from wages and winnings ...................................... 21 .00
22 ESTIMATED TAX payments and credits; extension payments; and amounts withheld
 .........................
22 .00
23 Total refundable credits from line 9, Form 104CR .................................................................. 23 .00
24 Total of lines 21 through 23........................................................................................................ 24 .00
Departmental Use Only
AMENDED
25 Enter the amount from federal Form 1040, line 37; or from federal Form 1040A,
line 21; or from federal Form 1040EZ, line 4 (Federal Adjusted Gross Income) ........................................
25
.00
If you want the Department of Revenue to compute and mail your refund, or compute your balance due and mail a bill, stop
here and leave lines 26 through 41 blank. If you want to compute the refund or balance due yourself, continue with line 26.
26 If line 24 is larger than line 20, enter your overpayment ..............................................................................
26
27 Enter the overpayment from your original return or as previously adjusted ................................................
27
28 If line 20 is larger than line 24, enter the amount owed ...............................................................................
28
29 Enter the amount owed from your original return or as previously adjusted...............................................
29
.00
.00
.00
.00
COMPUTE THE AMOUNT I OWE
30 Line 27 minus line 26, but not less than zero ................................................................................................ 30
31 Line 28 minus line 29, but not less than zero ................................................................................................ 31
32 Additional tax due, total of lines 30 and 31 ..................................................................................................
32
33 Interest due on additional tax ......................................................................................................................
33
34 Penalty due ..................................................................................................................................................
34
35 Estimated tax penalty due ...........................................................................................................................
35
36 Payment due with this return, add lines 32 through 35
..................................................
Paid by EFT 36
.00
.00
.00
.00
.00
.00
.00
The State may convert your check to a one time electronic banking transaction. Your bank account may be debited as early as the same day received by the State. If converted, your check will not
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COMPUTE YOUR REFUND
37
Line 26 minus line 27, but not less than zero
..............................................................................................
37
38 Line 29 minus line 28, but not less than zero ..............................................................................................
38
39 Overpayment, total of lines 37 and 38 ........................................................................................................... 39
40 Amount you want credited to your 2011 estimated tax ................................................................................
40
41 Refund claimed with this return, line 39 minus line 40.................................................................................
41
.00
.00
.00
.00
.00
SIGN YOUR
RETURN
Under penalties of perjury, I declare that to the best of my knowledge and belief, this return is true, correct and complete.
Your Signature Spouse’s Signature. If joint return, BOTH must sign.
Date Year of Birth Date Year of Birth
MAIL YOUR RETURN TO:
COLORADO DEPARTMENT OF REVENUE
DENVER, CO 80261-0005
Paid Preparer’s Name, Address and Telephone Number
Type:
Checking
Savings
Routing number
Account number

Form Information

Fact Name Description
Purpose The Colorado Form 104X is specifically designed for amending the individual income tax return for the tax year 2010.
Governing Law This form is governed by the Colorado Revised Statutes, particularly sections related to income tax adjustments.
Refund Process Lines 37 through 41 of the form help calculate any overpayment, which can be credited to future estimated taxes or requested as a refund.
Attachments Required Taxpayers must attach an explanation of changes and any required forms or certifications, such as DR 0074, when filing the amended return.
Statute of Limitations The general statute of limitations for filing a claim for refund is four years from the original due date of the return.
Direct Deposit Option Taxpayers can opt for direct deposit of their refund by completing the relevant section on the form.
Filing Status Changes When changing filing status, the taxpayer who filed first on the original return must be listed first on the amended return.

Detailed Guide for Filling Out Colorado 104X

The Colorado 104X form is used to amend a previously filed individual income tax return. Completing this form accurately is essential for ensuring that any adjustments to your tax liability are properly recorded. Follow these steps to fill out the form correctly.

  1. Obtain the Colorado 104X form from the Colorado Department of Revenue website or other reliable sources.
  2. At the top of the form, indicate the reason for amending your return by checking the appropriate box.
  3. Fill in your last name, first name, and middle initial, along with your Social Security number. If filing jointly, include your spouse's information as well.
  4. Provide your mailing address, city, state, ZIP code, and telephone number.
  5. Enter your federal taxable income from your original return on Line 1.
  6. Complete Lines 2 through 4 to report any additions to your federal taxable income, including state income tax deductions and other additions.
  7. On Lines 5 through 12, report any subtractions from your federal taxable income, such as state income tax refunds and pension-annuity subtractions.
  8. Calculate your Colorado taxable income by subtracting the total subtractions (Line 13) from the total additions (Line 4) and enter the result on Line 14.
  9. Refer to the tax table on pages 22 and 23 of the form booklet to determine your tax based on your taxable income, and enter that amount on Line 15.
  10. Complete Lines 16 through 24 to report any additional taxes, credits, and payments, including Colorado income tax withheld and estimated tax payments.
  11. If you are calculating your refund or balance due, continue with Lines 26 through 41. Otherwise, stop here and leave these lines blank.
  12. For any amount owed, compute the total due on Lines 30 through 36.
  13. For any refund, compute the total on Lines 37 through 41.
  14. If you wish to receive your refund via direct deposit, complete the routing number and account number sections.
  15. Sign and date the form. If filing jointly, both spouses must sign.
  16. Mail your completed form to the Colorado Department of Revenue at the address provided on the form.

Obtain Answers on Colorado 104X

  1. What is the Colorado 104X form?

    The Colorado 104X form is an Amended Colorado Income Tax Return. It is specifically designed for individuals who need to correct their previously filed 2010 individual income tax return. This form allows taxpayers to adjust their income, additions, subtractions, taxes, and credits as necessary.

  2. When should I file a 104X form?

    You should file a 104X form if you discover errors in your original tax return. Common reasons for filing include correcting income amounts, claiming additional credits, or changing your filing status. It is important to file this form within the statute of limitations, which is generally four years from the original due date of the return.

  3. How do I determine if I owe money or am due a refund?

    To determine if you owe money or are due a refund, you will need to complete lines 30 through 41 on the 104X form.

    • If line 30 indicates a decrease in your overpayment or line 31 indicates an increase in the amount owed, you will owe money.
    • If line 37 shows an increase in your overpayment or line 38 shows a decrease in the amount owed, you may be eligible for a refund.

  4. What attachments are required when filing the 104X?

    When filing the 104X, you must attach an explanation of the changes made to your return. Additionally, include any required forms or certifications, such as the 104CR or DR 0204. If applicable, part-year residents and nonresidents should attach a corrected Form 104PN. If the amendment is due to an IRS adjustment, attach the federal revenue agent’s report as well.

  5. What if the taxpayer has died since the original return was filed?

    If the taxpayer has passed away since the original return was filed, you must attach a copy of the DR 0102 — Claim for Refund Due Deceased Taxpayer and a copy of the death certificate. Ensure to check the deceased box next to the decedent's name on the form.

  6. How do I handle direct deposit for my refund?

    If you want your refund to be directly deposited into your bank account, complete the direct deposit information on the 104X form. You will need to provide your bank's routing number and your account number. This option can expedite the receipt of your refund.

  7. What is the interest rate on additional amounts due?

    The interest rates for additional amounts due are as follows: If you pay the tax due without billing or within 30 days of billing, the interest rate is 3%. If payment is made after 30 days of billing, the interest rate increases to 6%.

Common mistakes

When completing the Colorado 104X form, many individuals make critical errors that can delay their refunds or lead to further complications. One common mistake is failing to provide accurate amounts for income, additions, and subtractions. The form requires precise figures, and any discrepancies can trigger additional reviews by the Department of Revenue.

Another frequent error involves neglecting to attach necessary documentation. If changes were made to the original return, an explanation must be included. Attachments such as corrected forms or federal revenue agent reports are essential for supporting your amendments. Omitting these documents can result in processing delays or denial of your amended return.

Some taxpayers mistakenly leave out the direct deposit information, which can expedite the refund process. If you prefer to receive your refund directly in your bank account, ensure that you fill out the direct deposit section completely. Missing this step could lead to a longer wait for your funds.

Additionally, individuals often overlook the importance of checking the appropriate boxes for the reason for amending the return. Whether it’s due to a change in filing status or a protective claim, selecting the correct reason is crucial. Failure to do so may lead to confusion and further inquiries from the tax authorities.

Many filers also forget to sign the amended return. Both taxpayers must sign if filing jointly. This oversight can result in the return being considered invalid, causing unnecessary delays in processing.

Lastly, some people miscalculate the amounts owed or refunds due. It’s vital to double-check all calculations on lines 30 through 41. Errors in these amounts can lead to penalties or additional interest charges. Taking the time to review your figures can prevent these costly mistakes.

Documents used along the form

The Colorado 104X form is utilized for amending an individual income tax return. When filing this form, several additional documents may be necessary to support the changes being made. Below is a list of commonly used forms and documents that accompany the Colorado 104X form.

  • Form 104CR: This form is used to claim various tax credits available to Colorado residents. It details the specific credits for which the taxpayer is eligible and must be submitted with the 104X if any credits are being amended.
  • Form DR 0204: This document is required for certain adjustments related to income tax refunds. It may be necessary to include this form when changes affect the amount of refund claimed on the amended return.
  • Form DR 0074: This form is used to certify certain tax credits. If the amended return involves credits that require certification, this form must be attached to the 104X.
  • Form 104PN: Part-year residents and nonresidents must submit this form to report their Colorado taxable income accurately. It is essential when the taxpayer's residency status changes during the tax year.
  • DR 0102: This form is a claim for a refund due to a deceased taxpayer. If the taxpayer has passed away since the original return was filed, this form must be included with the 104X to request any refunds owed.

When preparing the Colorado 104X form, it is crucial to ensure that all relevant documents are attached. This will help facilitate the processing of the amended return and any associated refunds or credits. Proper documentation is essential for a smooth and efficient filing process.

Similar forms

The Colorado 104X form, used for amending an individual income tax return, shares similarities with several other tax-related documents. Here’s a list of ten forms that are comparable in function or purpose:

  • Form 1040X: This is the federal amended tax return form. Like the 104X, it allows taxpayers to correct errors or make changes to a previously filed federal return.
  • Form 1040: The standard individual income tax return form. Both forms are used to report income, deductions, and credits, but the 1040X specifically addresses amendments.
  • Form 1040A: A simplified version of the 1040. While the 1040A is used for straightforward tax situations, the 1040X can amend any return, including those filed on the 1040A.
  • Form 1040EZ: This is the simplest tax return form for individuals with basic tax situations. If an error is found on a 1040EZ, the 1040X would be used to amend it.
  • Form 104CR: The Colorado Credit for Income Tax form. If changes to credits are made, the 104X requires the 104CR to be attached as it may affect the overall tax calculation.
  • Form DR 0204: This form is used for Colorado's property tax exemption. Similar to the 104X, it can be amended to reflect changes in property status or eligibility.
  • Form 104PN: This form is for part-year residents and nonresidents of Colorado. If adjustments are needed for these taxpayers, the 104X can be used to amend their returns.
  • Form DR 0102: This form is a claim for refund due to a deceased taxpayer. If a refund is being claimed on behalf of a deceased taxpayer, the 104X may be required to amend the original return.
  • Form 104AMT: This form is for calculating the Alternative Minimum Tax. If changes affect AMT calculations, the 104X can be utilized to amend the tax return accordingly.
  • Protective Claim: While not a specific form, a protective claim is filed to keep the statute of limitations open. The 104X can be used as a protective claim when awaiting the outcome of a related tax determination.

Dos and Don'ts

When filling out the Colorado 104X form, it is essential to follow specific guidelines to ensure accuracy and compliance. Below is a list of five things to do and five things to avoid.

  • Do complete the form with the correct amounts for income, additions, subtractions, taxes, and credits.
  • Do attach all necessary documents, including explanations for changes and any required certifications.
  • Do check the box for a deceased taxpayer if applicable, and include a copy of the death certificate.
  • Do ensure that the direct deposit information is filled out if you wish to receive your refund directly into your bank account.
  • Do keep a copy of the amended return and all attachments for your records.
  • Don't forget to check the statute of limitations for filing your amended return, which is generally four years from the original due date.
  • Don't leave lines blank if you want the Department of Revenue to compute your refund or balance due; fill out the necessary information.
  • Don't submit the form without providing a clear explanation for any changes made to the original return.
  • Don't use incorrect addresses for foreign countries; enter the country in the "State" field and the postal code in the "ZIP Code" field.
  • Don't neglect to sign the return; both taxpayers must sign if filing jointly.

Misconceptions

Understanding the Colorado 104X form is crucial for anyone needing to amend their state income tax return. However, several misconceptions can lead to confusion. Below is a list of common misunderstandings about this form, along with clarifications to help navigate the process more effectively.

  1. Only major errors require an amended return. Many people believe that only significant mistakes necessitate filing a 104X. In reality, even minor errors, such as incorrect income amounts or missed credits, can warrant an amendment.
  2. The 104X form can be filed anytime. Some assume there are no deadlines for submitting this form. However, the statute of limitations for filing a Colorado claim for refund is generally four years from the original due date of the return.
  3. You do not need to provide documentation with the 104X. A common myth is that supporting documents are unnecessary. In fact, you must attach explanations of changes and any relevant forms to support your amendments.
  4. Filing a 104X guarantees a refund. Many believe that submitting an amended return will automatically result in a refund. While you may be eligible for a refund, it depends on the specific changes made to your return.
  5. All tax credits can be amended at any time. Some individuals think they can amend any tax credit indefinitely. However, certain credits have specific deadlines and rules that must be adhered to when amending.
  6. Only full-year residents can use the 104X. This is a misconception. Part-year residents and nonresidents can also file the 104X if they need to amend their returns.
  7. Changing your filing status is straightforward. Many taxpayers think that altering their filing status on the 104X is simple. However, there are specific rules about how to list taxpayers and what information must be included.
  8. You can ignore previous payments when filing a 104X. Some believe that prior payments do not matter when amending. In truth, any overpayments or amounts owed from the original return must be considered in the amended return.
  9. Direct deposit options are not available for refunds. A common misunderstanding is that refunds cannot be directly deposited. In fact, you can choose to have your refund directly deposited into a bank account.
  10. The 104X is only for correcting income errors. Some think this form is limited to income corrections. In reality, it can also be used to adjust deductions, credits, and other tax attributes.

By addressing these misconceptions, individuals can better navigate the complexities of the Colorado 104X form and ensure that their amended returns are accurate and complete.

Key takeaways

Filling out the Colorado 104X form can seem daunting, but understanding its key aspects can simplify the process. Here are some essential takeaways to keep in mind:

  • Purpose: The Colorado 104X form is specifically designed to amend your individual income tax return for the year 2010.
  • Correct Information: Ensure that you enter the correct amounts for income, additions, subtractions, taxes, and credits on the form.
  • Attachments Required: Include an explanation of the changes made to your return and any necessary attachments, such as Form 104CR or DR 0204.
  • Refund or Amount Owed: Lines 30 to 41 help you determine if you owe money or if you are entitled to a refund. Pay close attention to any increases or decreases in these amounts.
  • Direct Deposit Option: If you prefer to receive your refund electronically, fill out the direct deposit section with your bank information.
  • Deceased Taxpayer: If the taxpayer has passed away since the original return was filed, include a copy of the death certificate and the appropriate claim form.
  • Statute of Limitations: Generally, you have four years from the original due date of the return to file for a refund. Be mindful of this timeframe.
  • Filing Status Changes: If you are amending your filing status, follow the specific guidelines for listing taxpayers correctly on the form.

By following these takeaways, you can navigate the Colorado 104X form with greater confidence and accuracy.