Crossed $100,000 in One State? Forty-Two More Are Counting

Economic nexus rules in 2026, the published price of TaxJar, Avalara and managed filing, and the real cost of the three ways out for a small US seller.

AsiaPresswire – A two-person store selling kitchen goods on Shopify crossed $100,000 in shipments to Texas somewhere around the middle of 2026. Nobody told them, because nobody has to. Under the economic nexus rules every sales-tax state runs since the Supreme Court’s South Dakota v. Wayfair decision in 2018, crossing the threshold by itself creates the obligation to register, collect and file there, within the window the state specifies. The store’s own home state is one filing. Its marketplace sales are collected by Amazon and Etsy. Its Shopify orders are not, and they are the ones quietly stacking up in states it has never visited. By the time a notice arrives, the exposure runs backward, and back taxes plus penalties are recoverable only through a voluntary disclosure agreement that costs money to even ask for.

Why the comfortable assumptions fail

The first comfortable assumption is that marketplace facilitator laws solved this. Amazon collects and remits sales tax on marketplace sales in all the states that require it. That is true, and it is close to useless as protection, because in most states marketplace sales still count toward the seller’s own threshold even though the marketplace collected the tax. A seller doing $70,000 through Shopify and $60,000 through Amazon into North Carolina has crossed that state’s $100,000 trigger, even on the $60,000 Amazon already handled (Salestaxquestions, 2026). Washington and Texas go further and count gross revenue including exempt sales toward the threshold. The collection was handled. The obligation to measure, register and file, in states where the marketplace’s remittance does not cover the seller’s direct channel, was not.

The second comfortable assumption is that the thresholds are uniform. As of 2026, 45 states plus the District of Columbia enforce economic nexus, and the trigger is $100,000 in 42 jurisdictions, but the edges differ in ways that bite. California, New York and Texas sit at $500,000. New York is the only major state that requires both conditions, $500,000 and more than 100 transactions; everywhere else the transaction count, where it still exists, is an “or” trigger. A seller of $10 items in a transaction-count state like Georgia or Michigan can hit the 200-transaction trigger at $2,000 of sales (LegalClarity, 2026). Measurement windows differ too: calendar year in most states, rolling 12 months in Tennessee and Ohio, prior four quarters in Vermont. Illinois dropped its transaction threshold on January 1, 2026 and Kentucky follows in August 2026, so the map this year is not the map of last year. A spreadsheet built in 2025 is already wrong in two cells.

The third assumption, that the federal government just fixed all this, confuses two different taxes. The One Big Beautiful Bill Act, signed July 4, 2025, restored the 1099-K reporting threshold to $20,000 and 200 transactions retroactive to 2022 and raised the 1099-NEC threshold from $600 to $2,000 starting in 2026 (TIN Comply, 2026). That genuinely reduces federal paperwork for millions of casual sellers. It changed income information reporting. Sales tax is a state tax, administered by 45 separate governments, and the 2025 federal law did not touch a single nexus statute. The two reforms run in opposite directions: less federal form-chasing, unchanged state collection duty.

The registration ratchet and the warehouse trap

Two structural quirks make the exposure stickier than a one-time mistake. First, registration is a ratchet. Once a seller registers in a state, the returns keep coming for as long as the account is open, at whatever frequency the state assigned, monthly for larger volumes, quarterly or annually for smaller ones. Deregistering requires final returns, sometimes a bond, and in practice an accountant’s time. The $39 monthly software subscription scales down; the registration footprint does not. Sellers who registered defensively in 2019, when the post-Wayfair panic was at its peak, are still filing returns in states they no longer ship to, because closing the account costs more effort than the filing.

Second, the FBA trap operates on a different trigger entirely. Inventory stored in a state creates physical nexus there regardless of sales volume. A seller with $40,000 of total sales in 2026 and pallets sitting in an Amazon warehouse in Pennsylvania has obligations in Pennsylvania that no economic-nexus dashboard will surface, because the dashboard watches the dollar counter and the obligation arrived with the pallet. The nexus monitoring bundled with Avalara Select and the boutique services watches both, which is a concrete reason the monitoring matters even for sellers who consider themselves too small for any of this. Practitioner materials aimed at cross-border sellers price the multi-channel cleanup engagements that follow, per 2025-2026 practitioner surveys, at $1,500 to $3,500 per year for ongoing work, which is the quiet cost of discovering the warehouse rule late.

Path one: software, and doing the filings yourself

The direct path is compliance software with the seller’s name on every return. The published price list for 2026 makes this the most transparent of the three options. TaxJar’s Starter plan runs $39 per month with 2 AutoFile credits a year, extra filings at $50 to $55 each; the Professional plan is $99 per month with 4 credits, all effective October 1, 2026 (TaxJar, 2026). TaxCloud starts at $19 per month and, as of its 2026 rate card, files at $39 per return. Avalara’s small-business Select plan prices Core Compliance, as of its August 2026 announcement, at $799 per state per year with a three-state minimum, or $79 per state monthly (Avalara, 2026). Stripe Tax, for sellers already inside Stripe, is $90 per month.

Table 1: Published 2026 pricing for the three compliance routes, plus the one-time costs that arrive first.

Source: TaxJar and Avalara , 2026 pricing pages; Sales Tax Advisors rate card, accessed November 2026.

The arithmetic that matters sits under the table. Software does not register you; each state registration costs its own fee and takes its own paperwork, and a flat-fee service charges $300 per registration as of its published November 2026 rate card. Software does not fix the past. If the store in the opening paragraph has two years of unregistered Texas sales, the backward liability needs a voluntary disclosure agreement, priced at $5,400 per jurisdiction in 2026 by the boutique firm above, in exchange for capped lookback and waived penalties. Doing nothing is not the free option it appears to be: state penalties for unfiled returns, as compiled for 2025, typically run $50 to $250 per month plus interest of 1 to 1.5 percent per month on the unpaid balance. The cheapest year of compliance is always the first one, bought before the notice arrives.

One more discount hides inside the software path. In up to 25 states, the Streamlined Sales Tax program pays the compliance provider directly for qualifying sellers, which is why Avalara sells its SST plan at $699 per state instead of $799 and why TaxCloud can be free or subsidized in SST member states for enrolled businesses. A seller whose nexus footprint overlaps the SST states can shave hundreds of dollars a year by enrolling. Almost nobody without an accountant mentions this to them.

Path two: hand it to a service

The delegation path prices peace of mind. Avalara Select Core, at $799 per state annually, includes calculation, filing, remittance and state correspondence, with nexus monitoring across all 50 states bundled in. The boutique end of the market is more expensive and more personal: the Sales Tax Advisors rate card, published in 2026, offers a monthly return service starting at $600 per month covering up to 10 states, $60 per additional state, with reconciliation before filing and notice handling included (Sales Tax Advisors, 2026). A full 50-state nexus risk analysis, the audit that tells you where you already went wrong, runs $3,900 flat as of the same card.

What the premium buys is error absorption. When a filing is wrong in the DIY model, the state notices the seller, and the seller navigates the correction. In the managed model, the provider absorbs the notice, files the amended return and re-remits. For a seller with employees, inventory in multiple states through Fulfillment by Amazon, or a product line whose taxability differs state by state, that difference is worth more than the fee spread. For a seller with one warehouse and two channels, it is paying for calm. The moment physical nexus exists, because inventory sits in a state’s warehouse, the economic-nexus software discussion is too narrow, and the managed model earns its premium faster.

The cost that never appears in the brochure is the onboarding gap. Moving to a managed service mid-exposure means either cleaning up the past first, through those $5,400 VDAs, or disclosing it during registration and negotiating. Filing forward while the back period sits open tells the state exactly where to look, as the boutique firms warn their own clients. The managed path is therefore a clean-break strategy: expensive to enter, cheapest if entered before the mess rather than after.

Path three: shrink the map

The third path is commercial, not administrative: stay out of the states that trigger obligations. A seller can geofence shipping to exclude states where the threshold looms, or concentrate advertising spend in states already past the point where one more dollar matters. The cost is measurable in market size. California, Texas and New York, the three $500,000-threshold states, are also the three most populous states in the country; excluding them removes roughly a quarter of US consumers from the addressable market. Excluding a $100,000-threshold state that the seller is approaching costs proportionally less but still real revenue, and the exclusion must be maintained: one ignored campaign setting and the threshold is crossed anyway, with the obligation created on the day of the crossing.

The variant that mostly works is thinner than it sounds. Thresholds count sales, not presence, and most states measure gross sales including wholesale and exempt transactions. What a small seller can do legitimately is watch the counter the way the states do, monthly, by state, using the nexus monitoring that even the $19 software includes. The decision to withdraw from a state, keep collecting nowhere, and revisit at the next price increase is a legitimate quarterly business decision. What does not work is discovering the counter in a letter. The states do not forgive the crossing because the seller was busy; they sell the forgiveness back at VDA prices.

There is also a time price on the DIY path that no vendor’s pricing page prints. Five states with mixed filing frequencies ran, in a typical 2026 setup, on the order of a dozen to twenty returns a year, each needing reconciliation between the platform payout, the processor fees and the state’s own definition of taxable sales. At thirty to sixty minutes per return for a person who does this monthly, the software path costs roughly a working week per year of someone’s attention, at 2026 filing volumes, plus the notice replies that arrive on their own calendar. The $99 subscription buys the rate tables and the automation. It does not buy back the week. Sellers who price their own time honestly often find the managed path is cheaper than it looks, and sellers who do not are the ones the boutique firms find later, holding a penalty letter and a story about why they thought marketplace collection covered everything.

Which route, for whom

Start with the software path if the footprint is genuinely small: one state of physical presence, marketplace-heavy sales, direct-channel volume below $250,000, and no FBA inventory outside the home state. That is the $1,500 to $2,600 per year scenario, and the seller’s main job is a monthly ten-minute review of the nexus dashboard. Move to the managed path when any of three things is true: inventory sits in more than one state, the direct channel has crossed two or more state thresholds, or the seller’s time is worth more than the roughly $4,000 to $7,500 annual spread between software and service. Take the $3,900 nexus analysis before either, if there is any chance of past exposure, because the answer changes which path is safe. And if a state has already sent a letter, stop shopping for software and call about a voluntary disclosure the same week. Every month of delay is $50 to $250 in penalties plus interest, compounding in the state’s favor.

The store in the opening paragraph, the one that crossed $100,000 in Texas, should do exactly one thing today: run a nexus report across all 50 states, free with any of the monitoring tools mentioned above, and read the Texas line first. The obligation started on a date they can pinpoint from their own sales ledger. The state already knows the address. Everything else in this article is sequencing. The report tells them whether the sequence starts with a registration and a $39 subscription, or a phone call and a $5,400 disclosure, and those two first steps differ by a factor of a hundred. Twenty minutes with the free report is the highest-return compliance work a small seller will do this year.

Data basis

Data as of November 2026. Nexus thresholds and trigger logic (42 jurisdictions at $100,000, three at $500,000, New York’s and-logic, Illinois and Kentucky threshold changes in 2026) come from state-by-state tracking cross-referenced with state departments of revenue, reviewed August 2026. The marketplace-threshold rule (marketplace sales counting toward the seller’s trigger) is documented for Washington and Texas explicitly and described as the majority rule in practitioner guidance. Published prices for TaxJar, TaxCloud, Avalara Select, Stripe Tax and the Sales Tax Advisors rate card are quoted from the vendors’ own 2026 pricing pages, effective October 1, 2026 for TaxJar. The 1099-K and 1099-NEC changes come from coverage of Public Law 119-21 signed July 4, 2025, with IRS guidance. Penalty ranges ($50 to $250 per month plus 1 to 1.5 percent monthly interest) come from NCSL-published state penalty compilations as summarized in 2025 to 2026 practitioner materials. The five-state example costs are computed from the published rate cards and are illustrations, not quotes. Limitations: several vendors quote custom pricing behind sales calls, so the managed-service comparison understates the true spread; SST subsidy eligibility depends on seller registration status and cannot be confirmed in the abstract; and state penalty schedules vary, so the range is a span, not a median.

Sources

• Nexus Snapshot , economic nexus thresholds by state, data version 2026-Q3, reviewed August 26, 2026
• TaxJar , Starter and Professional pricing, effective October 1, 2026
• Avalara , Avalara Select pricing for small business, August 2026
• Sales Tax Advisors , published rate card for filings, registrations and VDAs, accessed November 2026
• TIN Comply , 1099-K threshold restored to $20,000 and 200 transactions under OBBBA, updated October 28, 2026
• LegalClarity , state threshold chart and Wayfair background, 2026

This article was prepared by the expert team at Global Infinity Labs, drawing on insights and data provided through its MCP data services.

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