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Outline

Completing your Illinois Tax Form IL-1040 is an important step in fulfilling your tax obligations and ensuring that you receive any potential refunds. This form is designed to help individuals report their income, calculate taxes owed, and claim any eligible credits or exemptions. The process begins with gathering personal information, including Social Security numbers for you and your spouse, if applicable. You will also need to determine your filing status, which can affect your tax calculations. The form requires you to report your total income, including any federal adjusted gross income and tax-exempt interest. As you progress through the form, you will calculate your base income by accounting for any subtractions, such as Social Security benefits or other allowable deductions. Exemptions are also an essential part of the process, allowing you to reduce your taxable income based on personal circumstances, such as age or blindness. After calculating your net income, you will determine your tax liability and any applicable credits that may reduce the amount owed. Finally, the form guides you through the payment process, helping you understand if you owe money or if you will receive a refund. Understanding each step of the IL-1040 can make tax season less daunting and ensure that you are compliant with state tax laws.

Sample - Illinois Tax Form

 

Illinois Department of Revenue

*60012211W*

 

 

 

 

 

2021 Form IL-1040

 

 

 

 

 

 

 

 

 

 

 

Individual Income Tax Return

or for fiscal year ending

 

 

 

/

 

 

 

 

 

Over 80% of taxpayers file electronically. It is easy and you will get your refund faster. Visit tax.illinois.gov.

Step 1: Personal Information Enter personal information and Social Security numbers (SSN). You must provide the entire SSN(s) - no partial SSN.

A Your first name and middle initial

 

Your last name

 

 

 

Year of birth

 

 

Your social security number

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Spouse’s first name and middle intial

Spouse’s last name

 

 

 

Spouse’s year of birth

Spouse’s social security number

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Mailing address (See inst. if foreign address)

Apartment number

City

 

 

 

 

State

 

Zip or postal code

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Foreign nation if not US (do not abbreviate)

 

 

County (Illinois only)

 

Email address

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B Filing status:

Single

Married filing jointly

Married filing separately

Widowed

Head of household

 

 

 

 

 

 

 

 

 

 

 

 

 

C Check If someone can claim you, or your spouse if filing jointly, as a dependent. See instructions.

 

You

Spouse

D Check the box if this applies to you during 2021:

 

Nonresident - Attach Sch. NR

 

Part-year resident - Attach Sch. NR

Staple W-2 and 1099 forms here

Staple your check and IL-1040-V

Step 2: Income

 

 

 

 

(Whole dollars only)

 

 

 

 

 

 

 

1

Federal adjusted gross income from your federal Form 1040 or 1040-SR, Line 11.

 

 

1

.00

 

2

Federally tax-exempt interest and dividend income from your federal Form 1040 or 1040-SR, Line 2a.

2

.00

 

3

Other additions. Attach Schedule M.

 

 

3

.00

 

4

Total income. Add Lines 1 through 3.

 

 

4

.00

 

 

 

 

 

 

 

 

Step 3: Base Income

 

 

 

 

 

 

5

Social Security benefits and certain retirement plan income

 

 

 

 

 

 

 

received if included in Line 1. Attach Page 1 of federal return.

5

 

.00

 

 

 

6Illinois Income Tax overpayment included in federal Form 1040 or 1040-SR,

 

Schedule 1, Ln. 1.

 

 

 

 

 

 

6

.00

 

 

 

7

Other subtractions. Attach Schedule M.

 

 

 

 

7

.00

 

 

 

 

Check if Line 7 includes any amount from Schedule 1299-C.

 

 

 

 

 

 

 

 

8

Add Lines 5, 6, and 7. This is the total of your subtractions.

 

 

 

8

.00

 

9

Illinois base income. Subtract Line 8 from Line 4.

 

 

 

 

9

.00

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Step 4: Exemptions

 

 

 

 

 

 

 

 

 

 

 

 

10

a Enter the exemption amount for yourself and your spouse. See instructions.

 

a

 

.00

 

 

 

 

b Check if 65 or older:

You

+

Spouse

# of checkboxes x

$1,000

=

b

 

.00

 

 

 

 

c Check if legally blind:

You

+

Spouse

# of checkboxes x

$1,000

=

c

 

.00

 

 

 

dIf you are claiming dependents, enter the amount from Schedule IL-E/EIC, Step 2, Line 1.

Attach Schedule IL-E/EIC.

d

.00

 

 

 

Exemption allowance. Add Lines 10a through 10d.

 

10

.00

 

 

 

 

 

 

 

Step 5: Net Income and Tax

11Residents: Net income. Subtract Line 10 from Line 9.

 

Nonresidents and part-year residents: Enter the Illinois net income from Schedule NR. Attach Schedule NR. 11

.00

 

12

Residents: Multiply Line 11 by 4.95% (.0495). Cannot be less than zero.

 

 

 

 

 

 

 

Nonresidents and part-year residents: Enter the tax from Schedule NR.

 

 

12

.00

 

13

Recapture of investment tax credits. Attach Schedule 4255.

`

13

.00

 

14

Income tax. Add Lines 12 and 13. Cannot be less than zero.

 

 

14

.00

 

 

 

 

 

 

 

 

Step 6: Tax After Nonrefundable Credits

 

 

 

 

 

 

15

Income tax paid to another state while an Illinois resident. Attach Schedule CR.

15

 

.00

 

 

 

16Property tax and K-12 education expense credit amount from Schedule ICR.

 

Attach Schedule ICR.

16

 

.00

 

 

 

17

Credit amount from Schedule 1299-C. Attach Schedule 1299-C.

17

 

.00

 

 

 

18

Add Lines 15, 16, and 17. This is the total of your credits. Cannot exceed the tax amount on Line 14.

18

.00

 

19

Tax after nonrefundable credits. Subtract Line 18 from Line 14.

 

 

19

.00

 

 

 

 

 

 

 

 

Step 7: Other Taxes

 

 

 

 

 

 

20

Household employment tax. See instructions.

 

 

20

.00

 

21Use tax on internet, mail order, or other out-of-state purchases from UT Worksheet or UT Table

 

in the instructions. Do not leave blank.

21

.00

22

Compassionate Use of Medical Cannabis Program Act and sale of assets by gaming licensee surcharges.

22

.00

23

Total Tax. Add Lines 19, 20, 21, and 22.

23

.00

IL-1040 Front (R-12/21)

Printed by authority of the State of Illinois - web only, 1.

This form is authorized as outlined under the Illinois Income Tax Act. Disclosure of this information is required. Failure to provide information could result in a penalty.

 

 

*60012212W*

 

 

 

 

 

24

24

 

 

 

Total tax from Page 1, Line 23.

 

 

.00

 

 

 

 

 

 

 

 

 

 

 

Step 8: Payments and Refundable Credit

 

 

 

 

 

 

 

25

Illinois Income Tax withheld. Attach Schedule IL-WIT.

25

 

.00

 

 

 

 

26

Estimated payments from Forms IL-1040-ES and IL-505-I,

 

 

 

 

 

 

 

 

 

including any overpayment applied from a prior year return.

26

 

.00

 

 

 

 

27

Pass-through withholding. Attach Schedule K-1-P or K-1-T.

27

 

.00

 

 

 

 

28

Pass-through entity tax credit. Attach Schedule K-1-P or K-1-T.

28

 

.00

 

 

 

 

29

Earned Income Credit from Schedule IL-E/EIC, Step 4, Line 8. Attach Schedule IL-E/EIC.

29

 

.00

 

 

 

 

30

Total payments and refundable credit. Add Lines 25 through 29.

30

.00

 

 

 

 

 

Step 9: Total

 

 

 

31

If Line 30 is greater than Line 24, subtract Line 24 from Line 30.

31

.00

 

32

If Line 24 is greater than Line 30, subtract Line 30 from Line 24.

32

.00

 

 

 

 

 

 

Step 10: Underpayment of Estimated Tax Penalty and Donations - Only complete Step 10 for late-payment penalty for underpayment of estimated tax or to make a voluntary charitable donation.

33 Late-payment penalty for underpayment of estimated tax.

33

 

.00

a Check if at least two-thirds of your federal gross income is from farming.

b Check if you or your spouse are 65 or older and permanently living in a nursing home.

c Check if your income was not received evenly during the year and you annualized your income on Form IL-2210. Attach Form IL-2210.

d Check if you were not required to file an Illinois Individual Income Tax return in the previous tax year.

34

Voluntary charitable donations. Attach Schedule G.

34

 

.00

 

 

35

Total penalty and donations. Add Lines 33 and 34.

 

35

.00

 

 

 

 

 

 

 

 

Step 11: Refund

36If you have an amount on Line 31 and this amount is greater than Line 35, subtract Line 35 from Line 31.

This is your overpayment.

36

.00

37 Amount from Line 36 you want refunded to you. Check one box on Line 38. See instructions.

37

.00

38I choose to receive my refund by

a direct deposit - Complete the information below if you check this box.

You may also contribute

Routing number

 

 

 

 

 

 

 

 

 

 

 

 

 

Checking or

 

Savings

to college savings funds

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

here. See instructions!

Account number

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

b

paper check.

39 Amount to be credited forward. Subtract Line 37 from Line 36. See instructions.

39

.00

 

 

 

 

 

Step 12: Amount You Owe

40 If you have an amount on Line 32, add Lines 32 and 35. - or -

 

 

If you have an amount on Line 31 and this amount is less than Line 35,

 

 

subtract Line 31 from Line 35. This is the amount you owe. See instructions.

40

.00

Step 13: If this is a joint return, both you and your spouse must sign below.

Under penalties of perjury, I state that I have examined this return and, to the best of my knowledge, it is true, correct, and complete.

Sign

Your signature

Date (mm/dd/yyyy) Spouse’s signature

Date (mm/dd/yyyy) Daytime phone number

Here

 

 

 

(

)

 

 

 

 

 

 

Paid

Print/Type paid preparer’s name

Paid preparer’s signature

Date (mm/dd/yyyy)

 

Check if

Paid Preparer’s PTIN

 

 

 

self-employed

 

Preparer

Firm’s name

 

Firm’s FEIN

 

 

 

Use Only

 

 

 

 

 

 

 

(

)

 

 

Firm’s address

 

Firm’s phone

 

Third

Designee’s name (please print)

Designee’s phone number

 

Check if the Department may

 

Party

 

 

 

 

discuss this return with the third

 

 

 

(

)

 

Designee

 

party designee shown in this step.

 

 

 

 

 

 

 

 

 

 

Refer to the 2021 IL-1040 Instructions for the address to mail your return.

.

IL-1040 Back (R-12/21)

DR

 

AP

 

RR DC IR ID

Form Information

Fact Name Description
Form Number The Illinois Individual Income Tax Return is officially designated as Form IL-1040.
Filing Options Over 80% of taxpayers choose to file electronically, which speeds up refunds.
Governing Law This form is authorized under the Illinois Income Tax Act.
Personal Information Requirement Taxpayers must provide full Social Security numbers for themselves and their spouses.
Filing Status Options include Single, Married Filing Jointly, Married Filing Separately, Widowed, and Head of Household.
Exemption Allowance Taxpayers can claim exemptions for themselves, their spouses, and dependents.
Net Income Calculation Net income is calculated by subtracting the exemption allowance from the base income.
Tax Rate The income tax rate for residents is 4.95% of the net income.
Refund Process Taxpayers can choose to receive refunds via direct deposit or paper check.
Penalties for Non-compliance Failure to provide required information may result in penalties.

Detailed Guide for Filling Out Illinois Tax

Completing the Illinois Tax form requires careful attention to detail. You will need to gather your financial documents, including W-2 and 1099 forms, before starting. Follow these steps to ensure accurate completion of the form.

  1. Gather Required Documents: Collect your W-2 and 1099 forms. Ensure you have your federal tax return handy.
  2. Personal Information: Fill in your personal details, including full names, Social Security numbers, and mailing address. Ensure that you do not provide partial Social Security numbers.
  3. Filing Status: Select your filing status from the options provided: Single, Married filing jointly, Married filing separately, Widowed, or Head of household.
  4. Dependents: Indicate if someone can claim you or your spouse as a dependent.
  5. Residency Status: Check the box if you are a nonresident or part-year resident and attach the appropriate schedule.
  6. Income Section: Enter your federal adjusted gross income, tax-exempt interest, and any other additions. Calculate your total income.
  7. Base Income: List any subtractions from your income, including Social Security benefits. Calculate your Illinois base income.
  8. Exemptions: Enter exemption amounts for yourself, your spouse, and any dependents. Calculate the total exemption allowance.
  9. Net Income and Tax: Calculate your net income and the tax owed based on your net income. Include any recapture of investment tax credits.
  10. Tax Credits: List any nonrefundable credits you are eligible for and calculate your tax after these credits.
  11. Other Taxes: Include any additional taxes owed, such as household employment tax or use tax.
  12. Payments and Refundable Credit: List any tax withheld, estimated payments, and refundable credits. Calculate the total payments and credits.
  13. Determine Amount Owed or Refund: Compare your total payments to your total tax. Calculate if you owe money or if you will receive a refund.
  14. Sign and Date: If filing jointly, both you and your spouse must sign the form. Provide your daytime phone number and any preparer information if applicable.

Once you have completed the form, review it for accuracy. Make sure all calculations are correct and that you have attached any necessary schedules. Follow the instructions for submission, whether you choose to file electronically or by mail.

Obtain Answers on Illinois Tax

  1. What is the Illinois Tax form IL-1040?

    The Illinois Tax form IL-1040 is the Individual Income Tax Return that residents and certain non-residents of Illinois must complete to report their income and calculate their state tax liability. This form helps the Illinois Department of Revenue assess how much tax you owe or if you are entitled to a refund.

  2. Who needs to file the IL-1040?

    Generally, anyone who earns income in Illinois must file an IL-1040. This includes residents, non-residents, and part-year residents. If you are unsure whether you need to file, consider your income sources and consult the instructions provided with the form.

  3. What information do I need to provide on the form?

    You will need to enter personal information, including your name, Social Security number, and mailing address. Additionally, you must report your income, exemptions, and any applicable deductions. Be prepared to attach supporting documents, such as W-2 and 1099 forms, if required.

  4. How do I calculate my taxable income?

    To determine your taxable income, start with your total income from all sources. Then, subtract any exemptions and deductions you qualify for. This will give you your net income, which is used to calculate your tax liability.

  5. What should I do if I owe taxes?

    If you find that you owe taxes after completing the form, you can pay the amount directly through various methods. Options may include mailing a check, making an electronic payment, or using the Illinois Department of Revenue's online payment system. Ensure that you pay by the due date to avoid penalties.

  6. Can I file the IL-1040 electronically?

    Yes, over 80% of taxpayers in Illinois choose to file electronically. Filing online is often easier and can result in faster refunds. You can visit the Illinois Department of Revenue's website for more information on e-filing options.

  7. What if I need help with the IL-1040?

    If you have questions or need assistance while completing your IL-1040, consider reaching out to a tax professional or consulting the instructions provided with the form. The Illinois Department of Revenue also offers resources and support for taxpayers.

Common mistakes

Filling out the Illinois Tax form can be straightforward, but many people make common mistakes that can delay their refunds or lead to penalties. One major error is failing to provide complete personal information. It’s essential to include your full name, Social Security number, and the same for your spouse if filing jointly. Leaving out even one digit of the Social Security number can cause issues.

Another frequent mistake is not checking the correct filing status. Whether you are single, married filing jointly, or head of household, it’s crucial to select the right option. Choosing the wrong status can affect your tax rate and the deductions you qualify for.

Many taxpayers also overlook the income section. Ensure you report your federal adjusted gross income accurately. Mistakes in this area can lead to discrepancies that might trigger an audit. Remember, only whole dollars should be entered. Rounding can lead to errors.

Additionally, some individuals forget to include all necessary attachments. For example, if you have income from a W-2 or 1099, these forms must be stapled to your tax return. Not including them can delay processing and refunds.

Claiming exemptions incorrectly is another common pitfall. Make sure to check all applicable boxes and calculate the exemption amounts accurately. If you are 65 or older or legally blind, don’t forget to include these exemptions, as they can significantly reduce your taxable income.

People often miscalculate their total tax due. When adding lines for your tax liability, double-check your math. Errors here can lead to either underpayment penalties or overpayment, which means waiting longer for your refund.

Another mistake involves the payment section. Be sure to include all applicable payments and credits. This includes Illinois income tax withheld and any estimated payments. Missing these can result in an incorrect balance due.

Finally, many filers forget to sign and date their return. Both you and your spouse must sign if filing jointly. A missing signature can delay the processing of your return. Always review the entire form before submission to catch any overlooked details.

Documents used along the form

When filing your Illinois tax return, it's essential to include additional forms and documents that support your submission. Below is a list of commonly used forms that you may need alongside the Illinois Tax form.

  • W-2 Form: This form reports your annual wages and the taxes withheld from your paycheck. Employers must provide this form to their employees by January 31st each year.
  • 1099 Form: Used to report various types of income other than wages, salaries, and tips. Freelancers and independent contractors typically receive this form for their services.
  • IL-1040-V: This is the payment voucher for individuals who owe taxes. If you are sending a payment with your tax return, include this voucher to ensure proper processing.
  • Schedule CR: This schedule is used to claim credits for taxes paid to other states. If you worked in another state and paid taxes there, you may be eligible for a credit on your Illinois return.

Including the correct forms will help ensure a smooth filing process and may expedite your refund. Always double-check your documents for accuracy before submission.

Similar forms

  • Federal Form 1040: The Illinois Tax form shares similarities with the Federal Form 1040 as both require personal information, income reporting, and tax calculations. Each form includes sections for exemptions and credits, and both forms ultimately determine the taxpayer's liability or refund.
  • W-2 Form: The W-2 form, which reports wages and tax withholding, is similar in that it provides essential income information necessary for completing the Illinois Tax form. Taxpayers must attach their W-2 forms to the Illinois Tax form to substantiate their income claims.
  • 1099 Form: Like the W-2, the 1099 form reports various types of income other than wages, such as freelance work or interest income. Taxpayers must also attach relevant 1099 forms to the Illinois Tax form to accurately report all sources of income.
  • Schedule NR: This schedule is used by nonresidents and part-year residents to report their Illinois income. It is similar to the Illinois Tax form as it also requires detailed income calculations and exemptions, ensuring that individuals only pay tax on income earned within the state.

Dos and Don'ts

When filling out the Illinois Tax form, there are several important dos and don'ts to keep in mind. Following these guidelines can help ensure that your submission is accurate and timely.

  • Do provide your full Social Security number and your spouse's, if applicable.
  • Do staple your W-2 and 1099 forms to the tax return.
  • Do check your filing status carefully to ensure it is correct.
  • Do use whole dollars only when reporting income.
  • Do attach any required schedules, such as Schedule M or Schedule NR, as needed.
  • Don't leave any fields blank; fill in all required information.
  • Don't forget to sign and date the return before submitting it.

Misconceptions

When it comes to filing taxes in Illinois, many individuals hold misconceptions that can lead to confusion or mistakes. Here are eight common misunderstandings about the Illinois Tax form, along with clarifications to help taxpayers navigate the process more effectively.

  • Filing electronically is complicated. Many people believe that electronic filing is difficult. In reality, over 80% of taxpayers file electronically because it is user-friendly and allows for faster refunds.
  • Only residents need to file. Some assume that only full-year residents must file an Illinois tax return. However, nonresidents and part-year residents are also required to file if they earned income in Illinois.
  • Social Security numbers can be partial. A common myth is that providing a partial Social Security number is acceptable. It is essential to include the entire Social Security number for both the taxpayer and their spouse, if applicable.
  • All income is taxable. Many taxpayers think that all forms of income are subject to Illinois state tax. In fact, certain types of income, like federally tax-exempt interest and dividends, may not be taxable in Illinois.
  • Exemptions are automatic. Some individuals believe they automatically receive exemptions without needing to claim them. Taxpayers must enter exemption amounts for themselves, their spouses, and any dependents on the form.
  • Credits reduce taxable income. A misconception exists that all credits directly reduce taxable income. In reality, nonrefundable credits can only reduce tax liability to zero, not below it.
  • Late penalties are not a concern. Many people think they can file late without consequences. However, failing to file on time can result in penalties and interest on the amount owed.
  • Refunds are only issued by check. Some taxpayers believe that refunds can only be received via paper check. In fact, taxpayers can choose to receive their refunds through direct deposit, which is often faster and more convenient.

Understanding these misconceptions can help Illinois taxpayers approach their tax filings with greater confidence and accuracy. Always refer to the latest guidelines from the Illinois Department of Revenue for the most current information.

Key takeaways

Key Takeaways for Filling Out the Illinois Tax Form

  • Ensure all personal information is accurate. This includes full names, Social Security numbers, and mailing addresses. Any errors may lead to processing delays.
  • Consider filing electronically. Over 80% of taxpayers choose this method for its convenience and faster refund processing.
  • Attach all necessary documents. Staple your W-2 and 1099 forms, as well as any required schedules, to avoid complications.
  • Review the exemptions and credits available. Understanding these can significantly impact your tax liability and potential refund.