Illinois has more than one internet and phone market.
Choose the city, then compare in real time for the address or the seats.
The modeled tax and fee rate on a business phone bill in Illinois is 38.32 percent.
That figure is a 2025 state average from the Tax Foundation.
It includes the federal universal service fund.
It is an estimate for the state, not the tax on your invoice.
Techly is the phone and internet finder for a small business.
You set the seats or the address, then compare in real time.
A TechEstimate is a range. A written proposal sets the price.
The modeled rate is 38.32 percent. It is a 2025 state average, and your bill can differ by city and carrier.
Start with the city where the building is. The list below is the metros we publish.
No. A state page is a map of cities. The finder checks the address.
Data as of 2026-10-04.