What is the sales tax rate in Hammond?
The combined sales tax rate in Hammond, Indiana is 7% as of 2026. It is made up of the Indiana statewide base rate of 7%, plus applicable Lake County and local district taxes. Hammond sits within Lake County, and the rate can vary slightly across ZIP codes because of special district additions (see the ZIP breakdown below).
Sales tax in Indiana is administered by the Indiana Department of Revenue, which collects and distributes tax on behalf of the state and its local jurisdictions. The rate applies to most retail sales of tangible personal property delivered within Hammond.
Who needs to collect sales tax in Hammond, Indiana?
Any business with sales tax nexus in Indiana must register, collect, and remit sales tax on taxable sales delivered to Hammond. Nexus is established through:
- Physical presence: an office, store, warehouse, employee, or inventory located in Indiana.
- Economic nexus: exceeding $100,000 in sales to Indiana customers in the current or prior year.
- Marketplace facilitators: platforms such as Amazon or Etsy collect and remit on behalf of their third-party sellers.
Out-of-state (remote) sellers that cross Indiana's economic nexus threshold must register with the Indiana Department of Revenue before continuing to sell into the state.
How do you register for a sales tax permit in Hammond?
To collect sales tax in Hammond, you must register for a sales tax permit with the Indiana Department of Revenue. Registration is generally free. You will typically need your EIN or SSN, business entity details, bank account information, and an estimate of your monthly Indiana sales. Most permits are issued within a few business days of an online application.
How do you charge the right sales tax in Hammond?
Sales tax in Hammond is charged based on the delivery address. For orders shipped to a Hammond address, the combined rate of 7% generally applies; for in-store sales, the rate is based on the store's location. Because some ZIP codes within Lake County carry additional special-district taxes, always confirm the exact rate for the specific delivery ZIP code. The tables below show the most common Hammond ZIP codes and how Hammond compares with other cities in Lake County and across Indiana.
