Illinois Form Help
The following information has been provided to assist in the preparation of Illinois business returns.
All corporations that are qualified to do business in the state of Illinois and are required to file a federal income tax return must file an IL-1120 tax return, regardless of net income or loss. The IL-1120 filing due date is the same as the federal filing due date, typically on or before the 15th day of the third month following the close of the tax year. Limited Liability Companies that file as a corporation for federal income tax purposes are treated as a corporation for Illinois purposes and must file IL-1120. Note: For corporations that are a member of a unitary business group, see specific instructions for filing Illinois Schedule UB, Combined Apportionment for Unitary Business Group. Illinois Schedule UB is not currently supported in CrossLink.
Your mailing address is now required in Step 1. Crosslink carries this information from the Client Data screen. Previously, it was only required if the address had changed.
Your income or loss calculated in Step 2 is your federal taxable income or loss, plus any additions in Step 2. State and municipal bond interest from other states will flow from the Tax Exempt Interest Income worksheet on the Income Statement where the state code is not “IL”. Any distributive share of additions passed through from another entity on Schedule(s)K-1-P or K-1-T need to be manually entered. Note: Schedule 80/20 is currently not supported in CrossLink. If this form is required in either Step 2 or Step 3, it must be manually prepared and the tax return must be paper-filed with Schedule 80/20 attached to the return when filed.
Your base income or loss calculated in Step 3 is your income or loss calculated in Step 2 less total subtractions. Any distributive share of subtractions passed through from another entity on Schedule(s)K-1-P or K-1-T need to be manually entered. Note: Schedule 80/20 is currently not supported in CrossLink. If this form is required in either Step 2 or Step 3, it must be manually prepared and the tax return must be paper-filed with Schedule 80/20 attached to the return when filed.
Step 4, Figure Your Income Allocable to Illinois, was modified in 2012. You must now check one of the boxes above Step 4 to indicate where your base income or loss was derived: Checkbox A) your base income or loss is derived inside Illinois only, or Checkbox B) some or all of your base income or loss was derived outside of Illinois. CrossLink defaults to checking Checkbox A. Be sure to check checkbox B if some or all of your income was derived outside of Illinois and complete Step 4, per the instructions. Note: If all of your income or loss was derived inside Illinois only, you must leave Step 4 blank. In this case, Schedule NB cannot be included in the return and the sales apportionment fields (i.e. sales everywhere and sales inside Illinois) must be blank. If Checkbox B is checked, you must complete all fields in Step 4. If you are using the Multistate Apportionment Information worksheet in the General section of the return, the Illinois apportionment factor will calculate based on the total sales listed for Illinois and the total sales everywhere. Override for any adjustments necessary.
If you have an Illinois NLD from any loss year ending on or after December 31, 1986, it is subtracted from and limited to your base income allocable to Illinois. For tax years ending on or after December 31, 2012, and before December 31, 2014, net loss deductions incurred by a corporation may not exceed $100,000. If a corporation has an Illinois net loss for this tax year, Form IL-1120 must be filed reporting the loss in order to carry the loss forward to another tax year.
Payments of estimated tax, amounts paid with an extension, and prior year overpayment credited to the state of Illinois will flow from the State Taxes Paid Worksheet on the Income Statement when the state ID entered is “IL”. Pass-through entity payments reported on Schedule(s) K-1-P or K-1-T must be manually entered on IL-1120, Line 55d. Gambling withholding reported on Form(s) W-2G must be manually entered on IL-1120, Line 55e.
CrossLink does not yet support Form IL-2220, Computation of Penalties for Businesses. This form will be added to the program in a later release. The Department of Illinois will compute any penalty or interest due and notify you. If desired, you may enter any self-assessed penalty for underpayment of estimated tax on IL-1120, Line 53.
Use Form IL-1120-X to amend a previously filed IL-1120, Corporation Income and Replacement Tax Return. Answer all applicable questions Step 1. All amounts as originally reported will populate in Column A Enter any desired changes or corrections in Column B. Any adjustments made in Column B must be explained in Step 2. Form IL-1120-X is not eligible for electronic filing. It must be printed and filed as a paper return. A separate Form IL-1120-X must be filed for each tax year you need to amend.
Schedule J is used to claim a subtraction on your Form IL-1120 for dividends received form a foreign corporation.
Schedule M is used to calculate the total amount of “other additions and subtractions” you must include on Form IL-1120, Line 8 and Line 21, respectively. If Form IL-1120, Line 8 or 21 contains an amount, Schedule M is required to be included in the return in order to be accepted by the IDOR.
Use Schedule NB to determine total nonbusiness income (Column A) and nonbusiness income allocable to Illinois (Column B). The total of Column A will carry to Form IL-1120, Line 24 and the total of Column B will carry to Form IL-1120, Line 32. Note: Do not complete Schedule NB if the election to treat all income as business income was made on Form IL-1120, Line R. If the checkbox to make this election is checked, Schedule NB will calculate but the totals of Columns A and B will not carry to Form IL-1120, page 1. CrossLink provides an option at the top of Schedule NB to enter a percentage to calculate Column B as a percentage of Column A, with the exception of Lines 1, 2, and 18. See instructions for special treatment of interest, dividends, and capital gain or loss of intangible personal property. Review Column B carefully and manually enter different amounts, if appropriate. The Column B fields can be modified without requiring an override.
An Illinois net loss can be carried forward or back to reduce the base income allocable to Illinois. Use Schedule NLD to calculate your total amount of Illinois net loss available, the current year deductible amount, and the remaining NLD available for use in other years. For tax years ending on or after December 31, 2012 and before December 31, 2014, a C corporation is allowed an NLD up to $100,000. The 2012 Schedule NLD was redesigned to accommodate this change and therefore cannot be used for tax years ending before December 31, 2012. The schedule for the prior year must be used.
Complete this schedule if you are entitled to any of the following subtractions: dividends from enterprise zones and river edge redevelopment zones, dividends from foreign trade zones, contribution to a zone organization, or interest income from a loan secured by enterprise zone, river edge redevelopment zone, or high impact business property. Note: if you are a partner in a partnership, a shareholder in an S corporation, or a beneficiary in a trust and you received a Schedule K-1-P or Schedule K-1-T showing subtractions you may claim on your Schedule 1299-B, you must attach the schedules to your return when filed. This will make your IL-1120 ineligible for electronic filing. In this case, the return must be printed and filed as a paper return.
Complete this schedule if you are entitled to claim any of the income tax credits on Schedule 1299-D. Note: if you are a partner in a partnership, a shareholder in an S corporation, or a beneficiary in a trust and you received a Schedule K-1-P or Schedule K-1-T showing an amount of credit you may claim on your Schedule 1299-D, you must attach the schedules to your return when filed. This will make your IL-1120 ineligible for electronic filing. In this case, the return must be printed and filed as a paper return.
You must file Schedule 4255 if you claimed an investment credit against your Illinois income or replacement tax liability in a previous year and any of the property considered in the computation of the investment credit becomes disqualified. File Schedule 4255 in the year the property becomes disqualified. Schedule 4255 is a multiple occurrence form. File a separate Schedule 4255 for each tax year in which the now disqualified property was place in service beginning with the earliest year. Use this schedule to determine the amount of the recaptured credit you must add to this year’s tax liability.
Complete Schedule 477 if you are entitled to a replacement tax investment tax credit. If your business is new to Illinois in the current year, check the box above Line 13 and do not complete Lines 13 through 19. If your business is NOT new to Illinois in the current year and your base employment increased from the preceding year, Complete Step 2 before completing Step 1, Line 2. If appropriate, Step 2 Line 19 will carry to Step 1, Line 3. See specific Schedule 477 instructions for details.
If special depreciation is reported on federal Form 4562, complete IL-4562 in order to figure any current year Illinois special depreciation addition or Illinois depreciation subtraction. Note: if you filed more than one federal Form 4562, include the total amounts from all federal Forms 4562 on Form IL-4562.
Use Form IL-505B to request an extension of time to file an Illinois tax return if an extension of the federal return has not been requested. Illinois does recognize the federal automatic extension of time to file provided the Illinois tax return is filed by the Internal Revenue Service extended due date and a copy of the federal extension form is attached to the Illinois return when filed.
Use IL-1120-ES to determine the estimated tax payments you must make for the following tax year. Vouchers for the four payments are provided for those not required to pay electronically.
The EF Authorization form is the electronic signature form summarizing the agreement between the taxpayer and the Electronic Return Originator or Paid Preparer. A signed copy of this form must be retained for 3 years after the end of the year for which the return is filed. The submission ID for the Illinois is available on the Information and Status screen for your records. This form also allows the entry of the required information to schedule electronic payment of tax due. The withdrawal date is required to initiate the payment.
All S corporations that own property, do business in, or have income from sources in Illinois must file Form IL-1120-ST. This return is due on or before the 15th day of the third month following the close of the tax year. Electronic filing of this return is required if any payments are made by electronic funds transfer or if the corresponding federal return is required to be electronically filed.
IL-Schedule UB is not currently supported in Crosslink. Form 1120-ST, Line K is read-only.
Enter your Illinois corporate file charter number issued by the secretary of state.
Enter the city, state, and zip code where your accounting records are stored.
Your ordinary income or loss calculated in Step 2 is your federal ordinary income or loss from federal Schedule K, plus net income or loss from rental real estate and other rental activities, portfolio income or loss, and Section 1231 gain or loss, plus any other items not included in the computation of income or loss on your federal Form 1120-S.
Your base income or loss calculated in Step 3 is your ordinary income or loss calculated in Step 2 less Section 179 and investment interest deductions and all other expenses that were not deducted in the computation of ordinary income or loss on federal Form 1120-S.
In Step 4, various additions to income are added to the unmodified base income or loss from Step 3 to arrive at income or loss.
In Step 5, various subtractions from income are used to reduce the income or loss computed in Step 4 to arrive at base income or loss.
Step 6, Figure Your Income Allocable to Illinois, was modified in 2012. You must now check one of the boxes above Step 6 to indicate where your base income or loss was derived: A) your base income or loss is derived inside Illinois only, or B) some or all of your base income or loss was derived outside of Illinois. CrossLink defaults to Checkbox A being checked but check checkbox B if some or all of your income was derived outside of Illinois. Note: If all of your income or loss was derived inside Illinois only, you must leave Step 6 blank. In this case, Schedule NB cannot be included in the return and the sales apportionment fields (i.e. sales everywhere and sales inside Illinois) must be blank. If Checkbox B is checked you are using the Multistate Apportionment Information worksheet in the General section of the return, the Illinois apportionment factor will calculate based on the total sales listed for Illinois and the total sales everywhere. Override for any adjustments necessary.
Step 7, Figure Your Net Income, starts with Base Income from Line 35 or 46, whichever applies, and includes any income due to discharge of indebtedness and/or any subtraction from an Illinois NLD, if applicable, to arrive at net income.
If you have an Illinois NLD from any loss year ending on or after December 31, 1986, it is subtracted from and limited to your base income allocable to Illinois. If an S-corporation has an Illinois net loss for this tax year, Form IL-1120-ST must be filed reporting the loss in order to carry the loss forward to another tax year.
Step 8 determines the net replacement tax. It starts with replacement tax (1.5% of the net income calculated in Step 7), which is increased by any recapture of investment credits from Schedule 4255 and then decreased by investment credits from Schedule 477.
Payments of estimated tax, amounts paid with an extension, and prior year overpayment credited to the state of Illinois will flow from the State Taxes Paid Worksheet on the Income Statement when the state ID entered is “IL”. Pass-through entity payments reported on Schedule(s) K-1-P or K-1-T must be manually entered on IL-1120-ST, Line 57c. Gambling withholding reported on Form(s) W-2G must be manually entered on IL-1120-ST, Line 57d.
Use Form IL-1120-ST-X to amend a previously filed IL-1120-ST, Small Business Corporation Income and Replacement Tax Return. Answer all applicable questions Step 1. All amounts as originally reported will populate in Column A. Enter any desired changes or corrections in Column B. Any adjustments made in Column B must be explained in Step 2. Form IL-1120-ST-X is not eligible for electronic filing. It must be printed and filed as a paper return. A separate Form IL-1120-ST-X must be filed for each tax year you need to amend.
Information for the partners or members will flow from the federal Form 1120S Schedule K-1. The profit percentage shown is required to match the ending percentage shown on the federal Schedule K-1, though this amount may not reflect the percentage to be applied in determining Illinois income for the partner or member.
If the recipient of an IL-Schedule K-1-P is a Grantor Trust or Disregarded Entity, it is not required to file in Illinois. Check the appropriate box in Line 9b, Grantor Trust or Disregarded Entity, and override that Schedule K-1-P’s recipient name, entity type, and identification number with the information of the entity that must report the income or loss or claim any payments made on its behalf.
IL Schedule B, Partners’ or Shareholders’ Identification, is required to be filed to provide the Illinois Department of Revenue with the names, contact information and other tax information of the partners or shareholders.
Schedule M is used to calculate the total amount of “other additions and subtractions” you must include on Form IL-1120-ST, Line 21 and Line 33, respectively. If an amount is on Form IL-1120-ST, Lines 21 or 33, Schedule M is required to be included in the return or it will be rejected by the IDOR.
Use Schedule NB to determine total nonbusiness income (Column A) and nonbusiness income allocable to Illinois (Column B). The total of Column A will carry to Form IL-1120-ST, Line 36 and the total of Column B will carry to Form IL-1120-ST, Line 44. Note: Do not complete Schedule NB if the election to treat all income as business income was made on Form IL-1120-ST, Line O. If the checkbox to make this election is checked, Schedule NB will calculate but the totals of Columns A and B will not carry to Form IL-1120-ST, page 1. CrossLink provides the option at the top of Schedule NB to enter a percentage to calculate Column B as a percentage of Column A, with the exception of Lines 1, 2, and 18. See instructions for special treatment of interest, dividends, and capital gain or loss of intangible personal property. Review Column B carefully and manually enter different amounts, if appropriate. The Column B fields can be modified without requiring an override.
An Illinois net loss can be carried forward or back to reduce the base income allocable to Illinois. Use Schedule NLD to calculate your total amount of Illinois net loss available, the current year deductible amount, and the remaining NLD available for use in other years. For tax years ending on or after December 31, 2012 and before December 31, 2014, a C corporation (does not apply to S Corporations) is allowed an NLD up to $100,000. The 2012 Schedule NLD was redesigned to accommodate this change and therefore cannot be used for tax years ending before December 31, 2012. The schedule for the prior year must be used.
Complete Schedule 1299-A to claim the subtraction(s) and/or credit(s) to which this S corporation is entitled. If you are entitled to the Enterprise Zone Dividend or Interest Subtraction, do not include any dividends or interest received or accrued on or after August 7, 2012. The Veterans Job Credit has been modified in 2012. It now allows a credit for either “qualified veterans” or “qualified unemployed veterans”. If claiming the Veteran Jobs Credit, in Column D, manually enter the following percentage of the amount in Column C, depending on whichever applies: If “qualified veteran”, enter 10% of Column C; If “qualified unemployed veteran”, enter 20% of Column C. In Column E, use the ‘choice’ list to select a maximum credit allowed of $1,200 if “qualified veteran” or $5,000 if “qualified unemployed veteran”.
You must file Schedule 4255 if you claimed an investment credit against your Illinois income or replacement tax liability in a previous year and any of the property considered in the computation of the investment credit becomes disqualified, in the year the property becomes disqualified. Use this schedule to determine the amount of the recaptured credit you must add to this year’s tax liability. Schedule 4255 is a multiple occurrence form. File a separate Schedule 4255 for each tax year in which the now disqualified property was place in service beginning with the earliest year.
Complete Schedule 477 if you are entitled to a replacement tax investment tax credit. If your business is new to Illinois in the current year, check the box above Line 13 and do not complete Lines 13 through 19. If your business is NOT new to Illinois in the current year and your base employment increased from the preceding year, Complete Step 2 before completing Step 1, Line 2. If appropriate, Step 2 Line 19 will carry to Step 1, Line 3. See Schedule 477 instructions.
Complete IL-4562 if special depreciation is reported on federal Form 4562 in order to figure any Illinois special depreciation addition or Illinois depreciation subtraction required. Note: if you filed more than one federal Form 4562, include the total amounts from all federal Forms 4562 on Form IL-4562.
Use Form IL-1000 as an alternative to withholding on resident partners, shareholders, or members. Generally only nonresidents not otherwise required to file an Illinois return may be included. A worksheet for listing nonresident partners, shareholders, or member not included on the composite return is also provided. This form may also be used to pay the recapture of the low income housing credit for all partners, shareholders, and members. A worksheet is provided for recording the name of the partner, shareholder, or member, ID number, and amount of credit recaptured.
This form is due within three and one-half months of the end of the fiscal year for fiscal year entities, or by April 15th of the year following the close of the calendar tax year. This form must be printed and mailed to the Illinois Department of Revenue. See Form IL-1000 instructions for details.
Use Form IL-505B to request an extension of time to file an Illinois tax return if an extension of the federal return has not been requested. Illinois does recognize the federal automatic extension of time to file provided the Illinois tax return is filed by the Internal Revenue Service extended due date and a copy of the federal extension form is attached to the Illinois return when filed.
The EF Authorization form is the electronic signature form summarizing the agreement between the taxpayer and the Electronic Return Originator or Paid Preparer. A signed copy of this form must be retained for 3 years after the end of the year for which the return is filed. The submission ID for the Illinois is available on the Information and Status screen for your records. This form also allows the entry of the required information to schedule electronic payment of tax due, if applicable. The withdrawal date is required to initiate the payment.
A partnership, limited liability company, syndicate, group, pool, joint venture or unincorporated organization required to file federal Form 1065 that does business in Illinois, derives income from property in Illinois, or has members domiciled in Illinois must file Form IL-1065. This return is due on or before the 15th day of the fourth month following the close of the tax year. Electronic filing of this return is required if the corresponding federal return is required to be electronically filed.
IL-Schedule UB is not currently supported in Crosslink. Form 1065, Line I is read-only.
Enter the city, state, and zip code where your accounting records are stored.
Your ordinary income or loss calculated in Step 2 is your federal ordinary income or loss from federal Schedule K, plus net income or loss from rental real estate and other rental activities, portfolio income or loss, and Section 1231 gain or loss, plus any other items not included in the computation of income or loss on your federal Form 1120-S.
Your base income or loss calculated in Step 3 is your ordinary income or loss calculated in Step 2 less Section 179 and investment interest deductions and all other expenses that were not deducted in the computation of ordinary income or loss on federal Form 1120-S.
In Step 4, various additions to income are added to the unmodified base income or loss from Step 3 to arrive at income or loss.
In Step 5, various subtractions from income are used to reduce the income or loss computed in Step 4 to arrive at base income or loss.
Step 6, Figure Your Income Allocable to Illinois, was modified in 2012. You must now check one of the boxes above Step 6 to indicate where your base income or loss was derived: A) your base income or loss is derived inside Illinois only, or B) some or all of your base income or loss was derived outside of Illinois. CrossLink defaults to Checkbox A being checked but check checkbox B if some or all of your income was derived outside of Illinois. Note: If all of your income or loss was derived inside Illinois only, you must leave Step 6 blank. In this case, Schedule NB cannot be included in the return and the sales apportionment fields (i.e. sales everywhere and sales inside Illinois) must be blank. If Checkbox B is checked you are using the Multistate Apportionment Information worksheet in the General section of the return, the Illinois apportionment factor will calculate based on the total sales listed for Illinois and the total sales everywhere. Override for any adjustments necessary.
Step 7, Figure Your Net Income, starts with Base Income from Line 35 or 46, whichever applies, and includes any income due to discharge of indebtedness and/or any subtraction from an Illinois NLD, if applicable, to arrive at net income.
If you have an Illinois NLD from any loss year ending on or after December 31, 1986, it is subtracted from and limited to your base income allocable to Illinois. If a partnership has an Illinois net loss for this tax year, Form IL-1065 must be filed reporting the loss in order to carry the loss forward to another tax year.
Step 8 determines the net replacement tax. It starts with replacement tax (1.5% of the net income calculated in Step 7), which is increased by any recapture of investment credits from Schedule 4255 and then decreased by investment credits from Schedule 477.
Payments of estimated tax, amounts paid with an extension, and prior year overpayment credited to the state of Illinois will flow from the State Taxes Paid Worksheet on the Income Statement when the state ID entered is “IL”. Pass-through entity payments reported on Schedule(s) K-1-P or K-1-T must be manually entered on IL-1065, Line 59c. Gambling withholding reported on Form(s) W-2G must be manually entered on IL-1065, Line 59d.
Information for the partners or members will flow from the Form 1065 Schedule K-1. The profit percentage shown is required to match the ending percentage shown on the federal Schedule K-1, though this amount may not reflect the percentage to be applied in determining Illinois income for the partner or member.
If the recipient of an IL-Schedule K-1-P is a Grantor Trust or Disregarded Entity, it is not required to file in Illinois. Check the appropriate box in Line 9d, Grantor Trust or Disregarded Entity, and override that Schedule K-1-P’s recipient name, entity type, and identification number with the information of the entity that must report the income or loss or claim any payments made on its behalf.
IL Schedule B, Partners’ or Shareholders’ Identification, is required to be filed to provide the Illinois Department of Revenue with the names, contact information and other tax information of the partners or shareholders.
Schedule M is used to calculate the total amount of “other additions and subtractions” you must include on Form IL-1065, Line 22 and Line 33, respectively. If an amount is on Form IL-1065, Lines 22 or 33, Schedule M is required to be included in the return or it will be rejected by the IDOR.
Use Schedule NB to determine total nonbusiness income (Column A) and nonbusiness income allocable to Illinois (Column B). The total of Column A will carry to Form IL-1065, Line 36 and the total of Column B will carry to Form IL-1065, Line 44. Note: Do not complete Schedule NB if the election to treat all income as business income was made on Form IL-1065, Line L. If the checkbox to make this election is checked, Schedule NB will calculate but the totals of Columns A and B will not carry to Form IL-1065, page 1. CrossLink provides the option at the top of Schedule NB to enter a percentage to calculate Column B as a percentage of Column A, with the exception of Lines 1, 2, and 18. See instructions for special treatment of interest, dividends, and capital gain or loss of intangible personal property. Review Column B carefully and manually enter different amounts, if appropriate. The Column B fields can be modified without requiring an override.
An Illinois net loss can be carried forward or back to reduce the base income allocable to Illinois. Use Schedule NLD to calculate your total amount of Illinois net loss available, the current year deductible amount, and the remaining NLD available for use in other years. For tax years ending on or after December 31, 2012 and before December 31, 2014, a C corporation is allowed an NLD up to $100,000. The 2012 Schedule NLD was redesigned to accommodate this change and therefore cannot be used for tax years ending before December 31, 2012. The schedule for the prior year must be used.
Complete Schedule 1299-A to claim the subtraction(s) and/or credit(s) to which this partnership is entitled. If you are entitled to the Enterprise Zone Dividend or Interest Subtraction, do not include any dividends or interest received or accrued on or after August 7, 2012. The Veterans Job Credit has been modified in 2012. It now allows a credit for either “qualified veterans” or “qualified unemployed veterans”. If claiming the Veteran Jobs Credit, in Column D, manually enter the following percentage of the amount in Column C, depending on whichever applies: If “qualified veteran”, enter 10% of Column C; If “qualified unemployed veteran”, enter 20% of Column C. In Column E, use the ‘choice’ list to select a maximum credit allowed of $1,200 if “qualified veteran” or $5,000 if “qualified unemployed veteran”.
You must file Schedule 4255 if you claimed an investment credit against your Illinois income or replacement tax liability in a previous year and any of the property considered in the computation of the investment credit becomes disqualified, in the year the property becomes disqualified. Use this schedule to determine the amount of the recaptured credit you must add to this year’s tax liability. Schedule 4255 is a multiple occurrence form. File a separate Schedule 4255 for each tax year in which the now disqualified property was place in service beginning with the earliest year.
Complete Schedule 477 if you are entitled to a replacement tax investment tax credit. If your business is new to Illinois in the current year, check the box above Line 13 and do not complete Lines 13 through 19. If your business is NOT new to Illinois in the current year and your base employment increased from the preceding year, Complete Step 2 before completing Step 1, Line 2. If appropriate, Step 2 Line 19 will carry to Step 1, Line 3. See Schedule 477 instructions.
Complete IL-4562 if special depreciation is reported on federal Form 4562 in order to figure any Illinois special depreciation addition or Illinois depreciation subtraction required. Note: if you filed more than one federal Form 4562, include the total amounts from all federal Forms 4562 on Form IL-4562.
Use Form IL-1000 as an alternative to withholding on resident partners, shareholders, or members. Generally only nonresidents not otherwise required to file an Illinois return may be included. A worksheet for listing nonresident partners, shareholders, or member not included on the composite return is also provided. This form may also be used to pay the recapture of the low income housing credit for all partners, shareholders, and members. A worksheet is provided for recording the name of the partner, shareholder, or member, ID number, and amount of credit recaptured.
This form is due within three and one-half months of the end of the fiscal year for fiscal year entities, or by April 15th of the year following the close of the calendar tax year. This form must be printed and mailed to the Illinois Department of Revenue. See Form IL-1000 instructions for details.
Use Form IL-505B to request an extension of time to file a Illinois tax return if an extension of the federal return has not been requested. Illinois does recognize the federal automatic extension of time to file provided the Illinois tax return is filed by the Internal Revenue Service extended due date and a copy of the federal extension form is attached to the Illinois return when filed.
Corporations will be granted an extension of time to file of up to six months, and partnerships will be granted an extension of up to five months. Do not enter an extension date that exceeds the time period allowable. Complete this form in triplicate; mail one copy to the Illinois Department of Revenue at the address provided on the form by the original due date of the Illinois tax return, retain one copy, and attach one copy to the tax return when it is filed. Any tax due should be paid on Form IT-560C by the due date of the extension voucher.
The EF Authorization form is the electronic signature form summarizing the agreement between the taxpayer and the Electronic Return Originator or Paid Preparer. A signed copy of this form must be retained for 3 years after the end of the year for which the return is filed. The submission ID for the Illinois is available on the Information and Status screen for your records.