Indiana Sales Tax Guide
Indiana's state sales tax rate is 7%. Combined with local rates, buyers see 7% – 7% depending on the jurisdiction. Out-of-state sellers register once they cross the economic nexus threshold.
7%
up to 7%
$100K
annual revenue
2018
Wayfair year
Rate Structure
State base rate: 7%
Local option: Cities and counties in Indiana can add local rates on top, bringing combined rates to 7% – 7%.
Sourcing: Most states use destination-based sourcing (rate is based on where the customer receives the product). Verify with Indiana Department of Revenue for edge cases.
Economic Nexus
Out-of-state sellers must register and collect Indiana sales tax once they exceed:
- $100,000 in annual sales to Indiana customers
In-state sellers (physical presence) must register from day one — no threshold applies.
Effective enforcement began in 2018 following the South Dakota v. Wayfair decision.
Marketplace Facilitator Law
Yes — Indiana has a marketplace facilitator law. Marketplaces like Amazon, Etsy, Walmart Marketplace, and eBay collect and remit sales tax on your behalf. Sales made through those marketplaces typically don't count toward your economic nexus threshold in Indiana. Sales made through your own website or invoicing do count.
Registration Process
- 1
Confirm you have nexus
Use the Nexus Checker to confirm you've crossed the threshold. Physical presence triggers registration immediately.
- 2
Register with the Indiana Department of Revenue
Typically 30-60 days after crossing threshold. Free registration (no fee) in most states. You'll get a sales tax permit / seller's permit.
- 3
Collect sales tax on taxable transactions
Configure your ecommerce platform (Shopify, Amazon, WooCommerce) to charge the correct destination rate. Most platforms have built-in tax logic.
- 4
File returns on schedule
Filing frequency (monthly/quarterly/annual) is set by the state based on your volume — typically monthly for high-volume sellers.
Multi-state seller? Consider a sales-tax service (TaxJar, Avalara) or a specialist CPA once you're registered in 5+ states — the return-filing workload compounds fast.
Indiana Sales Tax Quirks
Rules and rate structures that make Indiana different from other states — worth knowing before you register or file.
- Indiana has a simple 7.0% flat state sales tax with no local additions — one of the easier states for out-of-state seller compliance.
- Indiana taxes gasoline via both sales tax and excise tax — unusual dual-taxation.
- Indiana taxes SaaS but exempts custom software from sales tax.
Reference only.
Thresholds and rates change. Verify current values with the Indiana Department of Revenue before registering or ignoring a state. Product taxability rules (SaaS, digital goods, services) vary significantly and are not covered here.