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Learn when Illinois Form 1099-K filing is required, which other information returns are mandatory or voluntary, 2027 filing deadlines, and direct state electronic filing options.
Miscellaneous Information
Illinois does not require this form unless it has been specifically requested. However, payers reporting Illinois income tax withheld for an individual may voluntarily file.
Nonemployee compensation
Illinois does not require Form 1099-NEC unless IDOR requests it. The form may be voluntarily submitted electronically using an accepted Illinois filing method.
Payment Card and Third-Party Network Transactions
Electronically file this form for payees with an Illinois address only when either the issuer is required by the IRS to electronically file the form, or the payee has four or more separate transactions that exceed $1,000. File directly through the state’s bulk filing method by March 31, 2027
Proceeds From Broker and Barter Exchange Transactions
Illinois does not require this form unless it is requested by IDOR. However, voluntary filing through electronic means using Illinois bulk filing method is accepted.
Distributions From Pensions and Retirement Plans
Illinois does not require Form 1099-R unless IDOR specifically requests it. Though voluntary filing is available when the form reports Illinois income tax withheld for an individual.
Interest Income
Illinois does not require this form unless IDOR requests it. A payer reporting Illinois withholding for an individual may voluntarily file the form through an accepted state filing method.
Certain Gambling Winnings
Illinois requires electronic filing of Form W-2G through an approved Illinois bulk filing method on or before March 31, 2027. Paper filing is not accepted unless instructed otherwise.
Wage and Tax Statement
Illinois requires electronic filing of Form W-2 by February 1, 2027 (January 31 falls on Sunday). Household employers filing Form IL-1040 are exempt, but those reporting employee income on Form IL-941 must file. A payer without internet access or facing hardship can request a waiver using Form IL-900-EW
Note:
Illinois does not have a general direct filing deadline for Forms 1099 other than Form 1099-K since those forms are not required unless IDOR requests them.
Federal recipient statements for most 2026TY Forms 1099 and electronic filing of Form 1099-NEC, are due February 1, 2027. Forms 1099-B and 1099-S, and Form 1099-MISC (with boxes 8 or 10) are due February 16, 2027, (February 15, 2027, is a federal holiday).
Illinois bulk-file transmissions are considered complete only if the filer receives an Accepted acknowledgement sent by IDOR.
Prepare, validate, and eFile eligible federal returns and support Illinois filing for Form 1099-K, W-2G, W-2, and voluntary information returns through a secure filing workflow.
Illinois requires a direct filing for an Illinois payee if Form 1099-K was electronically filed, or the payee has four or more separate transactions over $1,000.
Illinois does not require Forms 1099 unless IDOR requests them. Though voluntary filing is available for these forms.
Form W-2G must be filed directly with Illinois. Form W-2 is generally subject to direct electronic filing, except for the household-employer exception described above, or there is an approved hardship/no-internet waiver.
An approved waiver relieves the electronic-filing mandate but does not authorize paper filing. Do not submit paper, PDF, spreadsheet, magnetic-media, or emailed returns unless IDOR specifically requests them.
For tax year 2026 forms filed in 2027, the federal returns are filed through IRS IRIS (FIRE system is being phased out). The Illinois FIRE Electronic Transmission Program is a separate state system and is not affected by the IRS changes.
Use an accepted acknowledgement as proof of filing for bulk submissions.
Do not forget to reconcile Illinois withholding reported on Forms W-2, W-2G, and 1099 with Line 2 of the Forms IL-941. Always retain the forms and withholding records for three years.
Correction note: Do not submit an unnecessary Illinois correction for a Form 1099 that was never required or filed with IDOR. Federal returns are corrected separately through IRS IRIS.
Illinois Form W-2C is due as soon as possible after an error is discovered. Keep the Illinois filing confirmation or, for a bulk submission, the Accepted acknowledgement with the payer's records.
Illinois follows the federal Internal Revenue Code for the taxable year. That means federal tax law serves as the starting point, but applies its own Illinois-specific additions, subtractions, and express decoupling provisions.
The Public Act 104-0468 decouples Illinois from the federal IRC Section 1202 qualified small business stock exclusion. The state income tax adjustment does not change Illinois’ information return filing rules.
OBBBA increased the minimum federal reporting threshold (under IRC Sections 6041 and 6041A) from $600 to $2,000 for certain payments made in 2026. It also restored Form 1099-K third-party network threshold to payments over $20,000 and 200+ transactions.
Unlike the federal government, Illinois applies its own Form 1099-K filing thresholds. For an Illinois address payee, direct electronic filing is required when federal electronic filing requirements apply, or the payee has four or more transactions over $1,000. This Illinois test can be triggered below the federal payee-level TPSO threshold.
OBBBA has not made Forms 1099-MISC, 1099-NEC, 1099-B, 1099-R, or 1099-INT filing mandatory for Illinois. IDOR continues to state that Forms 1099, other than 1099-K, are not required unless requested by the state.
Illinois requires electronic filing of Form 1099-K when the state reporting threshold is met. The state also requires Form W-2G to be filed electronically. Illinois generally requires electronic filing of Form W-2. However, household employers reporting household employee income on Form IL-1040 do not have to file, while those reporting it on Form IL-941 have to file.
No. IDOR does not require Form 1099-NEC filing unless specifically requested. The payer must still file the federal Form 1099-NEC.
Electronically file Form 1099-K with an Illinois address when either the issuer is required by the IRS to electronically file federal Form 1099-K, or the payee has four or more separate transactions that are more than $1,000.
Forms W-2 are due February 1, 2027. While Form W-2G and required Form 1099-K are due March 31, 2027.
File Form 1099-K electronically with Illinois through the approved bulk-filing method. Tax1099 also supports direct Illinois e-filing for Form 1099-K.
Do not rely on a federal submission to satisfy an eligible Illinois Form 1099-K, W-2G, or W-2 filing. Those returns must be filed directly with Illinois using the applicable state electronic method.
No separate annual state transmittal form is filed with an electronic 1099 submission. For a bulk submission, use the required electronic file structure and retrieve an Accepted acknowledgement.
IDOR Publication 110 states that failure to electronically file Forms W-2, W-2c, or W-2G without an approved waiver can result in a $5 penalty per form. Businesses making a reasonable and good-faith effort to meet the W-2G and 1099-K deadline will not be penalized.
Illinois generally uses federal Internal Revenue Code terms, with federal tax law serving as the baseline but retains its own Illinois-specific additions, subtractions, and express decoupling provisions. Public Act 104-0468 decouples Illinois from the federal Section 1202 qualified small business stock exclusion for tax years ending on or after December 31, 2026. Note that OBBBA's federal information returns changes do not replace Illinois's Form 1099-K filing trigger.
Yes. Tax1099 supports preparation and electronic filing workflows for applicable federal returns and supported direct Illinois filing scenarios, including required Forms 1099-K, W-2G, W-2, and voluntary state submissions.
Complete your Illinois information return filings for Forms 1099-K, W-2G, W-2, and supported voluntary returns with Tax1099's end-to-end e-filing solution