# Multi-State Tax Nexus in 2026: Sales Tax, Income Tax, P.L

URL: https://elevatedtaxstrategies.com/operating-a-business/multi-state-nexus/
Markdown: https://elevatedtaxstrategies.com/operating-a-business/multi-state-nexus.md
Category: Operating a Business
Published: 2026-05-23
Author: Ramon Liriano Jr.

> Multi-state nexus rules have exploded since Wayfair and the MTC's 2021 P.L. 86-272 erosion. Remote employees, $100K sales thresholds.

## TLDR

Multi-state nexus is the single most-missed tax issue for growing businesses. **Three different nexus regimes apply**, each with different triggers: **(1) Sales tax**: $100K in sales OR 200 transactions in most states (post-Wayfair 2018); register + collect once triggered. **(2) Income tax**: physical presence still triggers + 15 states now claim economic-nexus jurisdiction over your income with thresholds as low as $100K-$500K in receipts; **P.L. 86-272** historically protected tangible-goods sellers from state income tax but the MTC's 2021 revised statement gutted the protection for any business with a website, cookies, or in-state customer support. **(3) Payroll tax**: one remote employee in another state triggers payroll-tax registration in that state. **The dollar cost when you discover nexus 3 years late:** back tax + ~25% penalty + ~8% annual interest, multiplied across every state you triggered. A $200K-revenue SaaS founder with one remote employee in California can owe $40K-$80K in back state tax + penalties before they even know nexus existed.

In this guide, you'll learn:

- Understand the three nexus regimes (sales tax, income tax, payroll tax) and how each has different triggers
- See the post-Wayfair $100K/200-transaction sales tax thresholds + the income tax economic nexus map across 15 states
- Recognize why the MTC's 2021 statement effectively killed P.L. 86-272 protection for any internet-active business
- Calculate the back-tax / penalty / interest exposure when nexus is discovered 3 years late (worked SaaS example)
- Use Voluntary Disclosure Agreements (VDAs) to limit look-back and waive penalties when you self-disclose

## What "nexus" actually means

Nexus is the legal threshold that gives a state the right to tax you. **Each state defines its own:** there's no federal nexus standard. The same business can have:

- Nexus for **sales tax** in 12 states
- Nexus for **income tax** in 7 states (different set)
- Nexus for **payroll tax** in 3 states (yet another set)

Most business owners only think about nexus when they get a notice from a state department of revenue. By then it's been triggering for months or years, and the state's clock has been running.

## The three types of nexus

The three regimes trigger on different facts, demand different filings, and each carries its own classic trap:

**The three nexus regimes at a glance**

|  | Sales tax | Income tax | Payroll tax |
| --- | --- | --- | --- |
| Trigger | $100K in sales *or* 200 transactions | Physical presence + economic nexus (15 states) | One employee working in the state |
| What you must do | Register, collect, file + remit returns | File a state income/franchise return, apportion income | Register, withhold, pay SUI, file payroll returns |
| Key gotcha | Wayfair (2018) made economic nexus universal | P.L. 86-272 protection is eroding fast | The remote-move trap: employee relocates, you go non-compliant day one |

### 1. Sales tax nexus

Triggered by either:

- **Physical presence:** an office, warehouse, employee, inventory, or contracted sales rep in the state
- **Economic nexus:** exceeding sales-volume thresholds set by the state

Post-_South Dakota v. Wayfair_ (2018), **every U.S. state that imposes sales tax has [economic nexus laws](https://elevatedtaxstrategies.com/operating-a-business/sales-tax-nexus-online-sellers/)**. The bright-line threshold most states use:

- **$100,000 in gross sales** to in-state customers in the prior year, OR
- **200 separate transactions** to in-state customers in the prior year

Once triggered: you must register, collect sales tax, file periodic returns (monthly, quarterly, or annually depending on volume), and remit collected tax to the state.

**Important trend:** states are increasingly **eliminating the 200-transaction threshold** and keeping only the dollar threshold (because high-volume low-ticket sellers were getting caught unfairly). California, New York, Illinois, and several others have moved to dollar-only thresholds.

### 2. Income tax nexus

Triggered by:

- **Physical presence:** same as sales tax
- **Doing business:** having employees, inventory, or operations in the state
- **Economic nexus for income tax:** 15 states now claim jurisdiction over your income based on revenue thresholds

The major income-tax economic nexus states + their thresholds (current as of 2026):

| State         | Threshold                                        |
| ------------- | ------------------------------------------------ |
| California    | $735,019 in California sales (annually adjusted) |
| New York      | $1,159,000 in New York receipts                  |
| Texas         | $500,000 in Texas receipts (franchise tax)       |
| Massachusetts | $500,000 in Massachusetts sales                  |
| Connecticut   | $500,000 in Connecticut sales                    |
| Pennsylvania  | $500,000 in Pennsylvania sales                   |
| New Jersey    | "Operating in New Jersey" + nexus presumption    |
| Tennessee     | $500,000 in receipts                             |
| Hawaii        | $100,000 in sales or 200 transactions            |
| Ohio          | $500,000 in gross receipts (CAT tax)             |
| Washington    | $100,000 in Washington receipts (B&O tax)        |

If you exceed the threshold, the state can tax your income proportional to in-state activity using **apportionment formulas** (sales-only, three-factor, or single-sales-factor depending on the state).

### 3. Payroll tax nexus

Triggered when you have **any employee working in the state:** even one remote worker who lives there. Requires:

- Registering as an employer in that state's payroll-tax system
- Withholding state income tax from the employee's wages
- Paying state unemployment insurance contributions
- Filing periodic state payroll returns

**The post-COVID trap:** an employee who used to live in your home state moves to another state without telling you. You keep paying them the same way. **You're now non-compliant with payroll tax in the new state from day one of their move.**

## P.L. 86-272: the federal income-tax protection that used to matter

Public Law 86-272 (passed in 1959) is a federal statute that **prevents states from imposing income tax on sellers of tangible personal property** if the only in-state activity is **solicitation of orders that are sent outside the state for approval and fulfillment**.

This was historically a huge protection for traveling salespeople, mail-order businesses, and remote-sales-only operations.

**What still qualifies for P.L. 86-272 protection (the old way):**

- Sales reps physically traveling through a state taking orders
- Mail-order solicitation
- Trade-show booth attendance for taking orders

**What disqualifies P.L. 86-272 protection:**

- Selling intangibles (software-as-a-service, licenses, services). Never qualified, P.L. 86-272 is tangible-goods only
- Any non-sales activity: installation, repair, technical support, post-sale customer service, training
- Having an in-state employee whose work goes beyond solicitation
- Holding inventory in-state

### The MTC's 2021 revised statement: P.L. 86-272 is dying

In August 2021, the **Multistate Tax Commission (MTC)** revised its statement on P.L. 86-272 and declared that **routine digital activities** exceed mere solicitation and therefore disqualify a seller from protection:

- Having a website that uses **cookies** to gather customer data
- Providing **in-state customer service** via the website (chat, contact form, etc.)
- Offering **post-sale electronic communications** (emails, push notifications)
- Allowing customers to **download free apps** on devices physically in the state
- Inviting **in-state customers to create accounts**, save preferences, or submit reviews

In practical terms: **if you have a website that does anything beyond static product listing + order form, the MTC says P.L. 86-272 doesn't protect you.**

**States that have adopted the MTC's revised statement (in whole or part):**

- California (the most aggressive, first to adopt)
- New York
- New Jersey
- Illinois
- Minnesota
- Several others have proposed adoption or are litigating

**Litigation status (2026):** California's adoption was challenged in court (American Catalog Mailers Association v. Franchise Tax Board). The case is ongoing but California continues to enforce the position. Most CPAs assume P.L. 86-272 is effectively dead for any business with an internet presence.

## The dollar math: what nexus mistakes cost

To make this concrete: **Andrea**, a SaaS founder, runs a $1.2M-revenue business in 2026. She lives in Texas. She has:

- 400 customers in California totaling $280K in revenue
- 200 customers in New York totaling $190K in revenue
- 1 remote employee in California
- 1 contractor (W-9, not employee) in Florida

What nexus has she triggered?

| State | Income tax nexus?                                            | Sales tax nexus?                  | Payroll nexus? |
| ----- | ------------------------------------------------------------ | --------------------------------- | -------------- |
| CA    | YES ($280K > some thresholds + employee)                     | NO (SaaS often not taxable in CA) | YES (employee) |
| NY    | YES ($190K, close to threshold, plus MTC erosion of 86-272) | NO (SaaS not taxable)             | NO             |
| FL    | NO (contractor, not employee)                                | NO                                | NO             |
| TX    | YES (home state, franchise tax)                              | NO (under $500K TX-only)          | YES            |

So Andrea owes income tax in CA, NY, and TX, three state returns. Plus payroll registration + ongoing payroll tax compliance in CA + TX. **If she misses any one of these:**

- **CA back income tax** for 3 years at ~9% effective state rate × her CA-apportioned income = ~$5K-$15K
- **CA failure-to-file penalty** = up to 25%
- **CA interest** = ~5-7% annually compounded
- **CA payroll registration penalty** for unregistered remote employee = up to $500/quarter
- **NY equivalent:** similar magnitude
- **Total exposure 3 years late:** $25K-$75K

The same business properly registered from day one would have owed about **$8K-$15K total** across all three states. The penalty/interest cost of waiting is massive.

## What triggers nexus most commonly (the avoidable cases)

In our experience working with growing businesses, these are the top 5 surprises:

1. **Hiring a remote employee in a new state.** Payroll nexus is instant. The employee triggers it the day they start work.
2. **Crossing the $100K sales threshold in a new state for the first time.** Most businesses don't have a tracker that flags this. They find out via a notice.
3. **Storing inventory at an Amazon FBA warehouse.** Amazon ships to dozens of states, holding your inventory in their warehouses, triggering physical-presence nexus everywhere they have a warehouse you've used.
4. **Trade-show attendance:** even briefly. Some states count this as physical presence.
5. **Hiring [contractors in new states](https://elevatedtaxstrategies.com/operating-a-business/1099-vs-w2-contractor-classification/)** who are reclassified as employees by the state's labor department. The state then comes back for income tax + payroll tax.

## What to do once you're nexus-positive

**Your fix depends on how long you've been triggering: How long have you been *nexus-positive* in that state?**

- **Less than 90 days** → Register now + start filing (recommended). Penalty + interest are mild this early. Some states waive prior-period liability if you register voluntarily inside a registration window.
- **3 months to 3 years** → Voluntary Disclosure Agreement. A VDA limits look-back to 3-4 years, waives some or all penalties, and charges back tax + reduced interest. Submit through a representative, often anonymously.
- **3+ years** → Amnesty or VDA with representation. Exposure is large enough that professional representation is essentially mandatory. Use state amnesty if offered, otherwise a carefully-disclosed VDA.

Never approach a state directly before a VDA is filed: they look up your taxpayer ID before you sign anything.

Different strategies based on how much time has passed:

### If you've been nexus-positive < 90 days

**Register now and start filing.** Most states' penalty + interest structures are mild if you self-disclose early. Some states have a "registration window" where they waive prior-period liability if you register voluntarily.

### If you've been nexus-positive 3 months to 3 years

**Voluntary Disclosure Agreement (VDA):** most states have a formal VDA program that:

- Limits look-back to 3-4 years (rather than the state's full statute of limitations, which can be 6+ years for unfiled returns)
- Waives some or all penalties
- Charges back tax + reduced interest

VDAs require a written submission, often anonymously through a representative. Don't approach the state directly. They will look up your taxpayer ID before you ever sign anything.

### If you've been nexus-positive 3+ years

**Tax amnesty** if the state offers one (CA periodically does), or **VDA with careful disclosure**. At this point, professional representation is essentially mandatory, the dollar exposure is large enough that mistakes get expensive.

## How to actually track nexus going forward

A real nexus-monitoring practice:

1. **Quarterly nexus review.** Pull state-by-state revenue. Compare against each state's threshold. Flag any state you're within 80% of the threshold for proactive monitoring.

2. **Employee/contractor state-of-residence audit.** Every quarter, confirm where each employee/contractor physically works. Anyone who's moved triggers a registration cascade.

3. **Sales-tax automation tools** (Avalara, TaxJar, or similar) handle the tracking + filing once you're registered. Worth the $50-300/mo subscription cost for any business with revenue >$300K.

4. **Annual nexus study:** at minimum, a 30-min internal review per year with someone who knows multi-state. We run these as part of [advisory engagements](https://elevatedtaxstrategies.com/services/tax-planning-advisory/) for any ETS client with operations in 2+ states.

## Common questions

**Does P.L. 86-272 still apply to my business?**
For tangible-goods sellers who sell exclusively via traveling reps with no internet presence and no in-state non-sales activity: yes, still applies. For everyone else (any internet-active business): assume it doesn't, especially in CA/NY/NJ.

**I have customers in 30 states. Do I have nexus in all 30?**
Probably not. Most states require both (a) economic threshold met AND (b) some other connection (employee, inventory, etc.) for income tax. For sales tax, the $100K/$200-transaction thresholds DO trigger nexus regardless of presence; that's the post-Wayfair rule.

**What if my products aren't subject to sales tax in a particular state?**
You still have nexus if you exceed the threshold. You just don't have to collect/remit sales tax on the exempt products. You may still have INCOME tax nexus separately. Each state defines what's taxable differently.

**I'm a SaaS company. Do I have sales tax nexus?**
Depends on the state. As of 2026, ~20 states tax SaaS as a "taxable digital product" (NY, MA, OH, etc.); ~30 don't. The taxability question is separate from the nexus question.

**My contractor is a 1099:** does that trigger nexus?
Generally no for income/payroll tax purposes (since they're not an employee). BUT if the state later reclassifies them as an employee, it does. Higher-risk states for misclassification: CA, NY, MA, NJ. If you have a long-term 1099 working 30+ hours/week, that's a reclassification risk.

**What about inventory in an Amazon FBA warehouse?**
This is THE classic nexus trap. Amazon FBA places your inventory in warehouses across multiple states. Each state where Amazon stores YOUR inventory is a state where you have physical-presence nexus for both income and sales tax. Most FBA sellers have nexus in 20+ states without knowing.

**Can I dissolve nexus by stopping activity in a state?**
Yes, but the state's clock keeps running for the remaining statute of limitations (typically 3-4 years from the last activity year). You're still on the hook for back tax even after you "leave."

**What does a nexus study cost?**
For an ETS-style boutique advisory engagement, a nexus study is typically included as part of the Tax Analysis when complexity warrants it. As a stand-alone deliverable, expect $1,500-$5,000 depending on the number of states and the complexity of the analysis.

---

If you're running a business with revenue >$300K across multiple states, OR you have any remote employees, OR you've crossed $100K of sales in any state outside your home state, you should run a nexus study before the next state notice arrives. The [Discovery call](https://elevatedtaxstrategies.com/discovery/) is the right first step; we map your current footprint, identify states where you're already nexus-positive, and lay out a registration or voluntary-disclosure path before back taxes + penalties + interest compound any further.

Sources verified via [Numeral economic-nexus state guide](https://www.numeral.com/blog/economic-nexus), [Cherry Bekaert P.L. 86-272 analysis](https://www.cbh.com/insights/articles/economic-nexus-and-public-law-86-272/), and the [MTC's revised statement on P.L. 86-272](https://www.mtc.gov/).