Indiana Sales Tax Registration for Out-of-State Sellers

Out-of-state sellers must register for Indiana sales tax when they have a qualifying physical presence in the state or, for remote sellers without physical presence, when qualifying gross revenue exceeds $100,000 in the current or preceding calendar year. Indiana no longer uses a transaction-count test. Registration is handled by the Indiana Department of Revenue (DOR), which registers qualifying sellers as retail merchants and issues a Registered Retail Merchant Certificate (RRMC).

The analysis is not limited to taxable retail sales. Revenue from exempt sales may count toward the economic-nexus threshold, wholesalers can be treated as retail merchants, and marketplace sales require separate attention. Sellers should therefore review how they sell, where products or services are delivered, and whether a marketplace facilitator handles any part of their Indiana business.

When an out-of-state seller must register

Indiana’s registration rules distinguish between sellers with a physical presence in the state and remote sellers operating without one.

Physical presence in Indiana

The $100,000 economic-nexus threshold does not protect a retail merchant that has physical presence in Indiana. A merchant maintaining specified Indiana business premises, using in-state representatives or agents, or otherwise required to register under Indiana law must register with DOR. In other words, a seller should assess physical presence before applying the remote-seller revenue test.

This review should be based on the seller’s actual operations, not simply the address shown on its formation documents. Inventory arrangements, business locations, and the activities of people acting for the seller in Indiana deserve careful review. Sellers seeking a broader introduction to the state’s standards can consult Indiana Sales Tax Registration Requirements Explained.

Economic nexus for remote sellers

A seller without physical presence in Indiana must register, collect, and remit Indiana sales tax when its qualifying gross revenue exceeds $100,000 in the current or preceding calendar year. Qualifying revenue includes tangible personal property delivered into Indiana, electronically transferred products, and services delivered in Indiana.

Effective January 1, 2024, Indiana has only the $100,000 economic-nexus threshold for remote sellers and marketplace facilitators. The former 200-transaction threshold no longer applies. A seller should not register solely because it completed 200 Indiana transactions, although those transactions may generate revenue that is relevant to the $100,000 test.

Which revenue belongs in the threshold calculation

The Indiana calculation is broader than a total of taxable sales. The threshold applies whether or not the revenue came from taxable sales, and wholesalers are treated as retail merchants for this purpose. As a result, a remote seller may be required to register and file returns even when none of its Indiana sales are taxable.

A useful internal calculation starts with revenue from tangible personal property delivered into Indiana, electronically transferred products, and services delivered in the state. The business can then identify marketplace transactions that may be excluded under the marketplace rule. Records should clearly show the customer or delivery location, sales channel, transaction amount, product or service category, and whether a marketplace facilitator was involved. That organization makes it easier to apply the threshold consistently across the current and preceding calendar years.

Marketplace transactions

Sales made through a marketplace generally do not count toward the individual seller’s threshold when the marketplace facilitator has met the threshold. Direct sales remain relevant to the seller’s own calculation. An exception applies when the facilitator has not met the threshold, so a seller should not automatically exclude every marketplace transaction without confirming how the facilitator fits the rule.

A business using both its own website and third-party marketplaces should keep those channels separate in its records. It should also avoid assuming that collection by a marketplace resolves the registration analysis for direct Indiana sales. Additional context for online businesses is available in Indiana Seller’s Permit Requirements for Online Retailers.

Limited rule for certain service providers

A remote service provider that meets the revenue threshold but neither sells tangible personal property nor provides taxable services to Indiana residents is not required to register, provided it has no other Indiana registration obligation. Because this is a limited rule, a provider with mixed activities should classify each revenue stream rather than treating the entire business as nontaxable services.

How to complete Indiana sales tax registration

1. Confirm the basis for registration. Determine whether the business has physical presence in Indiana. If it does not, compare qualifying gross revenue with the $100,000 threshold for both the current and preceding calendar years.
2. Separate direct and marketplace sales. Identify which transactions occurred through marketplace facilitators and whether the applicable facilitator met the threshold. Keep direct Indiana sales in the seller’s own calculation.
3. Review taxable and exempt activity. Do not remove revenue merely because a transaction was exempt or wholesale. Threshold revenue and the amount of tax ultimately collected are separate questions.
4. Choose a registration method. A seller may register directly through Indiana’s INBiz portal or use the Streamlined Sales Tax Registration System (SSTRS), an online multistate registration method. DOR states that registration through INBiz costs $25. That fee statement applies specifically to the INBiz method.
5. Organize consistent business information. Before beginning, reconcile the legal name, trade names, business addresses, responsible-party information, ownership details, sales channels, and description of products or services in the company’s records. Using one consistent set of information can reduce avoidable confusion during registration and later account administration.
6. Retain the registration record. DOR registers qualifying sellers as retail merchants and issues an RRMC. Keep the certificate and related account information with the business’s tax records, and ensure that the people responsible for invoicing and compliance know that the Indiana account exists.

For a registration-focused walkthrough, see How to Register for a Sales Tax ID in Indiana. Sellers should avoid treating a sales tax registration, an EIN, and a resale certificate as interchangeable documents; each serves a different business purpose.

Filing and payment after registration

Registration creates an ongoing account that must be administered correctly. Indiana-only registrants must file and pay electronically through DOR’s Indiana Taxpayer Information Management Engine (INTIME). Sellers registered through SSTRS may instead use a Certified Service Provider or Certified Automated System.

Indiana’s sales-tax rate is 7%. A registered retail merchant with annual collections below $1,000 is required to file annually. A seller should nevertheless follow the filing frequency shown for its own account rather than assuming that annual filing applies. Calendar reminders, assigned responsibility, and a documented review process can help prevent an open account from being overlooked during a period with little or no taxable activity.

The seller should also configure its invoicing, checkout, or accounting process around its actual Indiana sales. Registration does not by itself determine that every transaction is taxable. Product classification, exemptions, and marketplace handling still affect what the seller collects and reports.

Practical mistakes to avoid and next steps

• Using the obsolete 200-transaction test. Indiana eliminated that test effective January 1, 2024. Remote sellers and marketplace facilitators now apply the $100,000 economic-nexus threshold.
• Counting only taxable sales. Exempt revenue may still count toward the remote-seller threshold, and wholesalers are included in the rule.
• Applying the threshold despite physical presence. A retail merchant with qualifying physical presence must register; the economic-nexus threshold does not apply as a safe harbor.
• Excluding every marketplace sale automatically. The usual exclusion depends on the marketplace facilitator having met the threshold, while direct sales remain part of the seller’s own analysis.
• Assuming marketplace collection covers direct sales. A seller with multiple sales channels should evaluate its direct Indiana revenue separately.
• Confusing registration with proof for a supplier. A business making qualifying purchases for resale may need different documentation for that transaction. See Indiana Resale Certificate: What to Give Your Supplier for that separate topic.

The practical next step is to document the registration conclusion. Record whether the seller has Indiana physical presence, calculate qualifying revenue for the relevant calendar years, identify marketplace exclusions, and preserve the supporting sales reports. If registration is required, choose between Indiana-only registration through INBiz and multistate registration through SSTRS based on the business’s broader filing needs. After the account is established, use the filing and payment method associated with that registration route and follow the frequency shown for the account.