How to File Sales Tax in Illinois - Taxify
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How to File Sales Tax in Illinois

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File sales tax in Illinois
How to Register: To register in Illinois you must either do so online or complete and mail Form REG-1, Illinois Business Registration Application, to us at the address on the form.

Registration Cost: No fee.

Filing Requirements: The preferred method of reporting sales and use tax is electronically. Paper returns are allowed in limited situations. If you prefer not to file online and are not allowed to file via paper there is an option to file by phone through TeleFile.

The department’s Sales Tax TeleFile program allows retailers to file their sales tax returns by phone. TeleFile allows taxpayers to pay their Form ST-1 balance due during the filing call, provided they are already registered in the Electronic Funds Transfer Program. Participants are mailed instructions and a Personal Identification Number (PIN) that serves as an electronic signature for the TeleFiled return. You must TeleFile if you are sent a preprinted Form ST-1-T, Illinois Sales and Use Tax TeleFile Worksheet or you may file online.

Filing via a paper Form ST-1 is only allowed in the following limited circumstances: 1) you have more than one business location; 2) you need to use Line 17 to report the amount of prepaid Illinois Sales Tax on motor fuel; 3) you need to use Line 18 of Form ST-1 to report the amount of quarterly monthly payments that you remitted; or 4) you need to report an amount on any of the following lines on Form ST-1: receipts taxed at other rates, purchases at other rates, manufacturer’s purchase credit, excess tax collected, or a credit memorandum.

Due Date: Returns and payments are due on 20th of the month following the end of period.

Where to File: MyTax Illinois

What Will You Need: Illinois provides comprehensive line-by-line instructions for purposes of filing Form ST-1. It is highly suggested that you read through the instructions before filing in order to understand the types of information required for filing purposes.

Renewal: Not Required.

Additional Information: Illinois Sales Tax Rules and Regulations

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