Sales Tax in Porter, Indiana in 2025

We'll walk you through how the sales tax rate is determined for Porter and address some common questions you may have. We'll also cover how to collect, audit, and remit sales tax in Porter.

Plus, we’ll share the best solution that will ensure you are always compliant across the entire sales tax lifecycle.

Disclaimer: Our sales tax data is updated on a quarterly basis.

Porter Sales Tax Rate 2025

Since there are no local sales taxes in Porter, the only sales tax you have to pay is to the state of Indiana, which is set at 7.000%.

This rate applies to the following zip codes in Porter:

46304

This sales tax rate applies to the entire state, so they pay the same rate in Indiana cities like Westville and North Manchester

What Creates Sales Tax Nexus in Porter?

Porter adheres to the Indiana state tax regulations. You establish a sales tax nexus when you meet the following conditions:

• Economic Nexus: If you are an out-of-state business with taxable sales of more than $100,000 or 200 transactions in the past 12 months. This can include sales of tangible personal property, products transferred electronically, and services sold in the state.

• Physical Location: If you have a store, office, or warehouse in the state. 

• Employee Location: Businesses with employees in the state.

Read More: Check out this detailed guide on Sales Tax in Indiana.

What Products Are Exempt from Porter Sales Tax?

There are no special sales tax exemptions in Porter besides those provided by the Indiana sales tax law. 

Some items that have a sales tax exemption in Porter are:

• Sale and repair of durable medical devices as well as prosthetic devices, like artificial limbs.
• Food and food ingredients sold by a licensed practitioner and pharmacist.
• Insulin, oxygen, blood, or blood plasma bought for medical purposes.
• Office furniture and supplies of licensed medical practitioners. 
• Equipment and materials, concrete, and barricades used in public works projects.
• Food and food ingredients sold unheated and without utensils.

Who Needs a Sales Tax Permit in Porter?

If you plan to sell or rent tangible personal property, you’ll need to register for a Registered Retail Merchant Certificate (RRMC), which is Indiana's sales tax permit. 

You need to display the RRMC in all your business locations. It automatically renews without any additional charges as long as you pay your sales tax on schedule.

You may need additional sales tax registration if you sell or facilitate sales of:

• Food and beverages.
• Tires.
• Fireworks.
• Gasoline.
• Prepaid wireless cards.

Or, if you rent:

• Accommodations for fewer than 30 days.
• Motor vehicles weighing below 11,000 lbs.

How to Collect Sales Tax in Porter

Indiana is a destination-based state with a single sales tax rate of 7.000%.   This means anytime you make a taxable sale to a buyer in Indiana from within or outside the state, you should charge the 7.000% state sales tax rate.

For instance, let’s say your business is located in Washington, and you sell to a buyer in Porter, Indiana, then you should charge them the Indiana sales tax.

Explore more about origin-based and destination-based sales tax sourcing here.

How to File and Pay Sales Tax in Porter

Indiana requires all businesses to pay electronically via the Indiana Taxpayer Information Management Engine (INTIME). 

If you need to pay offline, use Form ST−103. Remember, you can’t send cash along with the form — instead, mail a check or money-order directed to the Indiana Department of Revenue. 

Or, you can streamline your entire sales tax process with Zamp. With precise calculations, hassle-free filings, and easy one-click registrations, staying compliant across the United States has never been easier.