Aurora Tax CPA
Do business

How to Do Business: Illinois, the USA, Canada and India

Step-by-step guides to starting a business in Illinois and to entering the U.S., Canadian and Indian markets: registrations, tax accounts, banking, hiring and profit repatriation.

Starting a business is a sequence of registrations: choose a structure, register the entity, get a tax identification number, register for state and local taxes, open a bank account, get licenses and permits, and put compliance deadlines on a calendar. The order and the offices differ by country, state and city, and mistakes in the early steps (the wrong entity, a missing foreign registration, a late annual report) are expensive to undo.

The Illinois guides walk through every step for a business in Aurora, Kane, DuPage, Will and Kendall counties and the rest of the state, with the real offices, forms and fees. The inbound guides cover what an Indian or Canadian owner must do to operate in the U.S., and the Canada and India guides cover the reverse. The last guide explains how to move profits and dividends between the three countries without surprises.

Deadlines live on the compliance calendars; local offices and county differences are in the Aurora and Illinois guides. We are a U.S. CPA firm and coordinate with your Canadian and Indian advisers for filings in those countries.

Start and run a business in Illinois

Formation, annual reports, licenses, county filings and state registrations.

US

Start a Business in Illinois Step by Step: Registrations, Licenses and Taxes

Numbered Illinois startup route covering state filings, tax registrations, employer accounts and local permits in the Fox Valley.

Read
USCAIN

Illinois LLC vs Corporation: Formation Steps, Fees and Tax Differences

Side-by-side Illinois comparison of LLC and corporation filings, state fees, franchise tax, replacement tax and federal election limits.

Read
US

Illinois LLC Annual Report and Registered Agent Rules: Fees, Deadlines and Penalties

How Illinois LLCs and corporations file annual reports, keep a registered agent, and avoid delinquency, penalties and dissolution.

Read
US

Illinois Local Business Licenses, Permits and Zoning: Aurora, Naperville and County Health Permits

Aurora, Naperville and county health department steps for registrations, occupancy permits, zoning letters and food permits.

Read
US

Illinois Employer Registration: IDOR Withholding, IDES Unemployment, New Hire Reporting and Workers' Comp

Step-by-step Illinois employer registration with IDOR and IDES, due dates, 2026 unemployment rates and workers' compensation rules.

Read
US

Illinois Assumed Business Name (DBA) Filing: County Clerk Steps in Kane, DuPage, Will and Kendall

Which Illinois assumed name filings go to the county clerk or Secretary of State, with fees and deadlines.

Read
USCAIN

Foreign Qualification in Illinois: How to Register an Out-of-State or Foreign LLC or Corporation

When an out-of-state or foreign company must qualify in Illinois, how to apply, and the cost and penalties.

Read
US

Illinois Small Business Resources: SBDC Centers Near Aurora, SBA Loans and State Financing

Free SBDC advising near Aurora, DCEO help, SBA loan programs and Advantage Illinois lender support for small businesses.

Read

Entering the U.S. market

For Indian and Canadian companies and founders: entities, EINs, banking, hiring and tax reporting.

Entering Canada

For U.S. and Indian companies.

Entering India

For U.S. and Canadian companies, and moving profits home.