Does the Illinois Secretary of State issue sales tax permits?

Usually not: sales tax permits come from the Illinois tax or revenue department, not the Secretary of State, which handles entity registration. People assume one office does everything. We handle both, the Illinois entity registration and the separate sales tax permit, so nothing falls between agencies.

How do I get an Illinois sales tax permit?

You register with the Illinois tax authority, providing your entity and EIN details, and receive a permit or account number authorizing you to collect and remit. We complete the Illinois registration alongside your entity so you are set up to collect correctly from day one.

How much does an Illinois sales tax permit cost?

Registering is usually free or a small fee in Illinois; the real obligation is collecting and remitting on schedule. A few states charge a permit fee or a security deposit. We handle the Illinois registration and show current figures; our service pricing is on the pricing page.

When do I file Illinois sales tax returns?

Illinois assigns a frequency, monthly, quarterly, or annually, by your volume, and you generally file even in periods with no sales, since missing returns brings penalties. We set your Illinois schedule on a compliance calendar and can file so nothing lapses as you grow.

What is economic nexus and does it apply in Illinois?

It means you can owe Illinois sales tax from your sales volume alone, without physical presence, once you cross the state's threshold, which is why online sellers register in many states. We check where your sales create Illinois and other-state nexus so you register before a state comes looking.

Is the sales tax permit the same as my Illinois business license?

No: they are separate registrations, a business license permits operating, the sales tax permit authorizes collecting tax, and many sellers need both plus the SOS entity registration. We sort out which Illinois registrations your business actually requires so none is missed at launch.

Can File.Business handle my Illinois sales tax permit?

Yes. We determine whether Illinois requires you to register, complete the sales tax permit with the state tax authority, and set you up to file returns on schedule, coordinated with your Secretary of State entity, so both the entity and the tax side are covered.

Home/Secretary of State directory/Sales Tax Permit/Illinois sales tax permit / seller's permit

Illinois . Sales Tax Permit

Illinois sales tax permit / seller's permit.

If your business sells taxable goods or services in Illinois, you need a sales tax permit (also called a seller's permit). This guide explains nexus rules, post-Wayfair economic thresholds, the application process, and ongoing filing frequency.

When you need an Illinois sales tax permit

Illinois requires sales tax registration once your business has nexus in the state. Nexus can be:

Physical nexus . office, warehouse, employee, inventory, or affiliate in Illinois.

Economic nexus (post-Wayfair) . reaching a sales or transaction threshold without any physical presence. Most Illinois thresholds: $100,000 in sales or 200 transactions in the prior or current calendar year.

Click-through or marketplace nexus . commission-based referrals or marketplace facilitator obligations.

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Illinois sales tax permit / seller's permit.

When you need an Illinois sales tax permit

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