Indiana Nonprofit Sales Tax: Exempt Purchases, the $100,000 Seller Threshold, RRMC Registration, Events, Online Sales, and Account Closure

Direct answer: two systems, not one

Indiana sales tax reaches a nonprofit in two entirely separate ways, and the single most useful thing to hold onto is that neither one implies the other.

The first is the purchase side. Can the organization buy things without paying Indiana sales tax? That depends on Department of Revenue approval, on the organization’s federal classification, on Indiana statutory rules, and on the particular purchase.

The second is the seller side. Must the organization collect Indiana sales tax on what it sells? That depends on what is being sold and on how much of it, measured against a specific calendar-year threshold, and it is decided independently of whatever the organization is allowed to buy exempt.

An approved nonprofit with a valid NP-1 certificate can still owe registration, collection, and returns as a seller. That is not a contradiction or an edge case. It is the ordinary situation for any Indiana nonprofit that runs a gift shop, a thrift store, an auction, or a merchandise page.

The purchase side: NP-20A, then NP-1

Exempt purchasing starts with approval rather than with a certificate. The organization files Form NP-20A and obtains Department of Revenue approval. Eligibility depends on federal classification and Indiana statutory rules, and it is narrower than income-tax nonprofit approval. Organizations operated predominantly for social purposes are not eligible for the general nonprofit purchase exemption at all. Federal section 501(c)(3) recognition on its own authorizes nothing here.

Once approved, the proof of an exempt purchase is the specially issued NP-1 certificate, retrieved through INTIME. Indiana has moved away from ordinary use of the prior generic exemption certificates, so a vendor should be given the current NP-1 and should retain it with the transaction records. Presenting an outdated or invalid certificate can produce an assessment against either the buyer or the seller.

The certificate covers less than people assume. The nonprofit itself must be the purchaser, must be directly invoiced, must directly pay, and must use the tangible personal property in carrying out its exempt purpose. A purchase made by an employee, a volunteer, a contractor, or a related person is not exempt merely because a reimbursement follows. Mixed-use items, construction contracts, fundraising inputs, lodging, meals, and utility purchases each run on separate rules, and property bought for resale uses the seller or resale rules instead.

An eligible nonprofit based outside Indiana running a short Indiana event, generally under 30 days, has its own route: Form NP-20T produces a temporary exemption letter rather than the resident NP-1 workflow. That temporary purchase exemption still does nothing about seller registration or tax collection if the organization sells anything taxable at the event.

The seller side: the strict greater-than-$100,000 threshold

Indiana gives nonprofits a seller exception tied to annual gross retail income from sales of tangible personal property. Once those sales exceed $100,000 in a calendar year, the organization registers and collects tax as required.

The operator deserves attention because it is easy to soften by accident. The rule is strictly greater than $100,000. It is not "at least $100,000" and not "$100,000 or more". An organization sitting exactly at $100,000 in a calendar year has not crossed it.

The threshold is also narrower than it looks in a second way. It measures gross retail income from tangible personal property. Taxable accommodations and certain designated services are taxable independently and do not use the same threshold calculation, so an organization under $100,000 in merchandise can still owe tax on something else entirely.

Because the measure is cumulative across the calendar year, it is worth tracking continuously rather than checking once. The obligation to register arrives before collection is required, not after a year-end reconciliation shows the line was crossed in August.

Registering: the RRMC, the rate, and zero returns

Registration means obtaining a Registered Retail Merchant Certificate for each location at $25 per location, collecting the current 7% state sales tax plus any applicable local transaction taxes, and filing ST-103 returns through INTIME at the frequency the Department of Revenue assigns.

The detail that catches organizations out is the zero return. While the account remains open, ST-103 returns keep coming due even in periods with no taxable sales at all. A seasonal organization that sells only at one annual event still files for the quiet months.

Skipping registration or missing returns does not simply leave a gap. It can produce estimated assessments, penalties, interest, and expiration or nonrenewal of the certificate, which is a considerably worse position than having registered and filed zeroes.

Fundraising events, auctions, and shops

A charitable purpose does not make a retail sale exempt, and this is where the purchase side and the seller side are most often confused. Gala auctions, gift shops, thrift stores, bake sales, and branded merchandise all involve sales of tangible personal property, and their gross retail income counts toward the nonprofit threshold.

The right approach is to track that income across every one of those activities rather than event by event, then apply the nonprofit threshold, any item-specific exemptions, the marketplace rules, and any organization-specific statutory exception. Donated property, occasional sales, food exemptions, admissions, and services can each change the outcome, so the exact facts of what is being sold matter more than the label on the event.

Treating all fundraising as exempt because the organization is a charity is the single most expensive assumption in this area, and it produces tax, interest, and penalties rather than a warning letter.

Online sales: direct is not the same as marketplace

Selling online splits into two different tax positions depending on who processes the sale, and an organization can easily be in both at once.

Marketplace-facilitated transactions are generally collected and reported by the marketplace facilitator, and under Bulletin #10 they are excluded from the nonprofit’s own direct-sales threshold calculation. Sales the organization makes directly, through its own site or its own channels, are a separate matter, and direct remote sales can create Indiana nexus when Indiana gross revenue exceeds $100,000.

The nonprofit-specific seller exception and the general remote-seller nexus test are distinct tests with distinct measurements. Merging them, or letting marketplace sales quietly inflate the direct-sales figure, causes duplicate collection, undercollection, or a threshold calculation that was never right. Keep marketplace statements and direct-sale records separately from the start.

Dues, admissions, rentals, and lodging

Money arriving at a nonprofit is classified by what the transaction actually is, not by who received it. A true gift with no substantial return benefit is different from a membership payment, a taxable admission, tangible property bundled into a package, advertising, a rental, an accommodation, a utility, or another taxable service.

That classification has to happen before the receipt is charged or invoiced, because it drives both the tax treatment and what the donor acknowledgment can honestly say. Getting it wrong produces undercollection, refund claims, donor-receipt errors, and assessment together rather than one at a time.

Taxable accommodations and designated services are worth calling out again here: they can be taxable regardless of the tangible-property threshold, so an organization that never approaches $100,000 in merchandise can still have a collection obligation.

Use tax, utilities, and local transaction taxes

Use tax is the mirror image of sales tax and a separate accrual. When a purchase is not covered by NP-1 or another exemption and the seller does not collect Indiana sales tax, which is common on out-of-state and online purchases, the organization accrues and remits use tax itself through the assigned return or Department of Revenue process. Failing to self-assess produces tax, interest, and penalties.

Utilities have their own instrument. Form ST-109NP&G goes directly to the utility provider for a qualifying exempt utility use, and the ordinary NP-1 purchase certificate does not replace it. A mixed-use building or a shared meter can require a utility review or inspection and a taxable allocation, so the exemption is rarely all or nothing.

Local taxes are a third system again. Indiana local food-and-beverage taxes generally follow the taxable character of the underlying sale, while county innkeeper’s and lodging taxes have their own statutes, returns, exemptions, and local administration. A nonprofit purchase certificate creates no universal lodging exemption, and one county’s rate, filing office, or nonprofit treatment cannot be generalized to the rest of the state.

Closing the account

Dissolving the corporation with the Secretary of State does not close Department of Revenue accounts, and an organization that assumes it does will keep receiving returns and notices for a system it believes it has left.

Closure means filing every final assigned return and marking it final, submitting IT-966 and BC-100 where applicable, requesting account closure through INTIME, and retaining the confirmation. Depending on what the organization ran, the final filings can include ST-103, WH-1, WH-3, and IT-20NP.

Everything outside the Department of Revenue closes separately again: the Secretary of State dissolution, the Department of Workforce Development account, workers’ compensation coverage, gaming and alcohol permits, property-tax records, and local permits. An open account keeps generating returns, notices, estimated assessments, and penalties indefinitely.

A short working checklist

Before buying exempt: confirm Department of Revenue approval on NP-20A, retrieve the current NP-1 through INTIME, and check that the nonprofit is the invoiced purchaser and payer and that the use is its exempt purpose. Out-of-state organizations running a short Indiana event use NP-20T instead.

Before selling: identify what is actually being sold, separate marketplace sales from direct sales, and track cumulative calendar-year gross retail income from tangible personal property against the strictly greater-than-$100,000 threshold. Register for a $25 Registered Retail Merchant Certificate per location before collection is required, then file ST-103 at the assigned frequency, zeroes included.

Alongside both: accrue use tax on uncollected taxable purchases, use ST-109NP&G for qualifying utilities, and treat local food-and-beverage and innkeeper’s taxes as their own systems. When the activity ends, close the Department of Revenue accounts deliberately rather than assuming dissolution did it.

The full Indiana nonprofit compliance guide carries these thirteen sales-tax requirements alongside the other 115, each with its own official sources, and the Indiana overview article covers the corporate, fundraising, employment, gaming, and closure systems that sit around them.