Every U.S. state with a sales tax now has a marketplace facilitator law, and the scope has stretched well beyond the original product-marketplace scenarios these laws were written for. Amazon and Etsy were the obvious early targets. Airbnb, Vrbo, and the wider set of lodging and short-term rental platforms are now named explicitly in many state statutes. Services platforms like TaskRabbit and Find My Builder aren’t usually named directly, and whether they’re in scope depends on each state’s specific definition.
If you handle sales tax or finance at a marketplace facilitator company, you need to map the rules state by state, know where your gaps are, and trust your historical sales tax filings would hold up if a state asked. The South Carolina Supreme Court’s March 2026 ruling against Amazon is a reminder that historical questions can come back into scope on transactions from before a state’s marketplace facilitator law was in force.
This is a plain-language guide for marketplace facilitators on what states require, where the practical gaps still are, and how to keep both today’s sales tax filings and yesterday’s exposure defensible.
Key takeaways: what every marketplace facilitator should check
- Every U.S. state with a sales tax has a marketplace facilitator law, but thresholds, definitions, and the breadth of taxable transactions differ widely. Mapping each state to your platform’s actual transaction profile is where marketplace facilitator compliance starts.
- Lodging and short-term rental marketplaces are increasingly named in state statutes, while services-only platforms sit nearer the definitional edge. If you run a non-traditional marketplace, your first compliance question is whether you’re a marketplace facilitator under each state’s specific definition.
- Home rule cities and special districts often impose obligations on top of state-level rules. Chicago’s Personal Property Lease Transaction Tax, Colorado home rule cities, Alabama local variations and Alaska’s borough and municipal sales taxes don’t disappear because a state marketplace facilitator law exists.
- Historical periods may come back into scope years later. The South Carolina Supreme Court’s March 2026 ruling against Amazon shows that transactions from before the relevant marketplace facilitator law took effect can resurface if a state finds existing statutory language it can apply.
Defining a marketplace facilitator: state-by-state lines and edge cases
Across most state statutes, a marketplace facilitator is a business that lists third-party sellers’ products or services on a platform, handles payment, and connects buyers with sellers. Three elements typically have to be present: the platform lists the offer, the platform handles the payment, and the platform sits between the buyer and the seller for at least part of the transaction.
Hosted store providers such as Shopify, WooCommerce, and Wix typically fall outside the definition, since they give sellers tools to run their own stores rather than brokering transactions. Payment processors and drop-shippers usually sit outside too, though edge cases do exist.
The marketplace facilitator definition matters because state collection obligations only attach to entities that meet it. State definitions vary on three things: what transactions count (tangible goods, digital products, services, lodging), the nature of the platform’s involvement in the sale, and any specific exceptions a state has written into its law.
For example, Kansas treats Airbnb and Vrbo as marketplace facilitators for short-term rentals while excluding hotel-room platforms. California and Nevada don’t impose a sales tax on short-term accommodations at all. Arkansas explicitly includes specified digital products in its marketplace facilitator definition; other states still don’t address them.
If your platform sits near the definitional edge, particularly in services or across multiple transaction categories, a state-by-state self-assessment serves better than a single overall determination. Each state’s Department of Revenue publishes its own marketplace facilitator guidance, and we covered the foundational definitional questions in our marketplace facilitator overview.
State requirements: what marketplace facilitators must collect, remit, and report
Once a marketplace facilitator hits a state’s collection threshold, commonly $100,000 in sales or 200 transactions (though several states have moved away from the transaction count), the platform is responsible for collecting, remitting, and reporting sales tax on transactions it facilitates into that state. Thresholds, registration timing, and the specific taxes captured all vary.
Several practical realities make this more complex than it sounds. Some states allow marketplace facilitators and sellers to contractually reallocate collection responsibility based on seller size, while others such as Iowa, prohibit it. Some lodging marketplaces operate under voluntary collection agreements that predate the relevant marketplace facilitator law and may go beyond what it strictly requires. Some states layer on alternative obligations like North Carolina’s tire disposal tax and white goods disposal tax, while others impose customer notification or reporting requirements as alternatives.
Home rule and special districts add another layer entirely. Marketplaces collect state-administered sales tax, but city- and district-level taxes often don’t follow automatically. Chicago’s Personal Property Lease Transaction Tax is the most prominent example for software and digital marketplaces, while Colorado has dozens of home rule cities with varied rules, Alabama’s local sales tax setup creates its own patchwork, and Alaska has no statewide sales tax but individual boroughs and municipalities impose their own rates.
If your platform routes transactions into those jurisdictions, the obligation usually stays with you. We’ve worked through the operational questions marketplace facilitators face most often in our article on the questions every marketplace facilitator should consider.
Compliance gaps: the four areas every marketplace facilitator should watch
The headline rules look clear on paper, but as the Tax Foundation has noted, the state-by-state patchwork creates real complexity for any platform operating across more than a handful of states. Here are the four areas that come up most often in our work with marketplace facilitator clients.
Non-traditional marketplaces. Services platforms, B2B marketplaces, and niche e-learning platforms often weren’t on legislators’ minds when the original marketplace facilitator laws were drafted, and whether your platform is captured can hinge on the breadth of a given state’s definition and on whether the underlying service is taxable there. A state-by-state review usually serves better than a single overall determination.
Digital products and taxable services. Some marketplace facilitator laws explicitly cover digital goods, SaaS, and taxable services; others were drafted for tangible personal property and haven’t been updated. Marketplace facilitators in these categories can’t assume the state law definitively settles whether their transactions are in scope .
Your own marketplace nexus footprint. Economic nexus is calculated across the transactions you facilitate plus any direct sales you make, and as transaction volume grows, marketplace nexus thresholds may be crossed in states you haven’t registered in yet. Threshold monitoring needs to happen on a regular basis across every state where you do business.
Historical liability. Historical periods can come back into scope years later when a state finds existing statutory language it can apply. On March 18, 2026, the South Carolina Supreme Court ruled 3-2 that Amazon owed $12.5 million in uncollected sales taxes for the first quarter of 2016, predating South Carolina’s 2019 marketplace facilitator law. The court found Amazon’s control over third-party transactions made it engaged in the business of selling under the existing 2011 statute.
Mapping these areas across your platform’s footprint is the kind of focused review we run for marketplace facilitator clients. Get in touch and we’ll work through your specific gaps.
Operational discipline: keeping marketplace facilitator compliance current
For most marketplace facilitators, the work falls into four streams that benefit from running on a steady cadence rather than as one-off projects.
Map your collection coverage state by state. Confirm registration in every state where you’ve crossed economic nexus thresholds, and revisit threshold tracking quarterly. The home rule and special-district overlay needs to be built separately, because state-administered sales tax registration doesn’t capture it.
Document your marketplace facilitator self-assessment. Particularly if your platform crosses categories or operates in services or bookings, set out the basis for treating yourself as a marketplace facilitator (or not) in each relevant state. The reasoning matters in audit, where “we assumed” rarely holds.
Set out your sourcing and classification logic. Determine how each transaction is sourced and how each product or service is classified, then write the rules down. Inconsistent sourcing and classification are common issues we see in marketplace facilitator audits.
Keep an audit-ready record for historical periods. As the South Carolina case shows, documenting collection treatment for each historical period across each state, including periods that predate the relevant marketplace facilitator law, is much easier as ongoing maintenance than as reconstruction during an audit. For deeper context on how marketplace facilitator and seller responsibilities split out at the state level, see our overview of states’ online sales tax and marketplace facilitator rules.
Marketplace facilitator laws were supposed to simplify state sales tax administration, and broadly they have. The complexity has shifted from sellers to platforms, and the day-to-day work now sits on the platform side. This includes defining yourself correctly across 50 jurisdictions, monitoring thresholds, layering home rule rules, classifying digital and service offerings, and keeping a paper trail that holds up if a state asks about a transaction from five years ago.
Ready to map your obligations under marketplace facilitator laws?
If you’re responsible for sales tax or finance at a marketplace facilitator company and want to understand your specific exposure under marketplace facilitator laws, particularly across the four areas above, we’d welcome a conversation. Contact Miles Consulting Group at info@milesconsultinggroup.com or book a consultation through our website.
Frequently asked questions
What makes a business a marketplace facilitator under state law?
A marketplace facilitator is generally a business that lists third-party sellers’ products or services on a platform, processes payment, and connects buyers with sellers. Definitions vary by state, with some explicitly covering services, lodging, and digital goods, while others were drafted only for tangible personal property. Whether a non-traditional platform (a services-only marketplace, e-learning platform, or B2B marketplace) qualifies as a marketplace facilitator usually depends on the specific state’s marketplace facilitator definition and on whether the underlying transactions are taxable there.
Do marketplace facilitators need to collect city-level taxes like Chicago’s PPLTT?
Often, yes, depending on the city and the platform’s transactions there. State marketplace facilitator laws cover state-administered sales tax. Home rule jurisdictions like Chicago, many Colorado cities, and certain Alabama localities can impose their own collection obligations on marketplace facilitators that the state-level law doesn’t capture. Marketplace facilitators with transactions into those jurisdictions need to identify and register for those local obligations separately.
How are short-term rental and services platforms treated under marketplace facilitator laws?
Treatment varies sharply by state. Most states with sales tax now require short-term rental marketplaces (Airbnb, Vrbo, and similar) to collect state and local lodging taxes on bookings, though a few states, including California and Nevada, don’t tax short-term accommodations as a sales tax matter at all. Services platforms typically face a more uneven landscape: whether the platform is captured depends on the state’s definition and on whether the underlying services are taxable in that state. Marketplace facilitators in either category should review state-by-state rather than relying on national assumptions.
Can marketplace facilitators reallocate sales tax responsibility to their sellers?
Some states permit contractual reallocation between marketplace facilitators and large sellers, often with thresholds tied to seller size. Others, including Iowa, explicitly prohibit it. Where reallocation is permitted, it usually requires a written agreement and continued documentation. Marketplace facilitators relying on reallocation should confirm the specific rules in each relevant state each year, since several states have tightened their positions since the original marketplace facilitator laws were drafted.
What does the South Carolina ruling on Amazon mean for marketplace facilitators?
The March 2026 South Carolina Supreme Court ruling held Amazon liable for $12.5 million in uncollected sales taxes for the first quarter of 2016, predating South Carolina’s 2019 marketplace facilitator law. The court found that Amazon’s level of control over third-party transactions made it engaged in the business of selling under existing 2011 statutory language. For marketplace facilitators more broadly, the practical takeaway is that historical periods can come back into scope years later when a state sees uncollected revenue and statutory language it can apply, even where no marketplace facilitator-specific law was on the books at the time.
