2026 Sales Tax Economic Nexus Engine

Find Out In 60 Seconds If You Owe Sales Tax In Other States

Automatically track 50-state economic nexus thresholds across Shopify, WooCommerce, Amazon, Stripe, eBay, Etsy, TikTok Shop, Walmart, BigCommerce, and Wix in real time. Never overpay marketplace taxes or miss a filing limit.

Isolates marketplace tax pre-collected by Amazon & Etsy

Detects Amazon FBA fulfillment center physical nexus

Zero-PII Privacy Vault • No customer cards or names stored

Your Home StatePhysical Base

Annual Gross Sales$400,000

Active Channels

Zero sign-up required

Visual Compliance Guide

Why You Need Omnichannel Nexus Tracking

How multi-channel sales silently trigger sales tax liability across 50 US states.

1THE PROBLEM

State Audit Penalties & Limits

Typical State Limit$100,000 / 200 Orders

Exceeding limits requires mandatory state tax registration

Uncollected taxes are back-billed with interest & penalties

STATE DEPT. OF REVENUE • AUDIT NOTICE

FINAL DEMAND

Uncollected Remote Sales Tax:$10,850.00

Failure-to-File Statutory Penalty:+$2,712.50

Mandatory Compounded Interest:+$1,437.50

TOTAL PENALTY & BACK-TAX:

$15,000.00

Example notice. Monitoring flags a threshold before it is crossed.

2THE STACKING TRAP

Sales Channels Stack Up

Amazon Sales

$60,000

Shopify Web Sales

$50,000

Total Combined:$110,000 (BREACH!)

💡 Amazon marketplace sales push your combined store volume over state limits—silently triggering mandatory tax collection on direct Shopify checkout!

3THE SOLUTION

EcomNexusHub Shield

Automated Early Warning

Alerts triggered at 80% threshold before statutory violations occur.

Separates Marketplace vs Direct Tax

Zero-PII Data Privacy Shield

Automated multi-channel sync

Order import

Alerts before a threshold breach

Early warning

CPA-ready CSV exports

Reports

Zero-PII Privacy Protection

Data Shield

Multi-Channel Integration Ecosystem

Supported E-Commerce Stores & Marketplaces

EcomNexusHub connects directly with all 10 major direct merchant platforms and marketplace facilitators. Orders are aggregated with Zero-PII immediate payload scrubbing.

Direct Taxable Web Sales

Direct merchant storefronts where you file and remit sales tax

Shopify

Direct Web Stores & POS

WooCommerce

WordPress Storefronts

Stripe

Custom Web Checkouts

BigCommerce

B2B & Headless Stores

Wix Commerce

Direct Online Stores

Marketplace Facilitators

Platforms that pre-collect & remit sales tax on your behalf

Amazon SP-API

FBA & Seller Central

eBay

Direct & Auction Sales

Etsy

Craft & Vintage Portal

TikTok Shop

Social Viral Checkout

Walmart

Marketplace & Online Sales

Frequently Asked Questions

Sales Tax Nexus & Multi-Channel Compliance Answers

Everything eCommerce founders and finance teams need to know about US economic nexus thresholds, marketplace rules, and audit protection.

Automated 50-State Sales Tax Economic Nexus Engine

Tracks economic nexus across all 50 states + DC•Works with Shopify, Amazon, WooCommerce, Etsy, and more•Payments processed securely by Stripe•Plans from $0/month•Built by Fierce Builds LLC

Free 60-Second Nexus Audit

Transparent Order-Volume Pricing

Predictable Tiered Pricing Built for E-Commerce Growth

Pay only for the monthly order volume processed across all your connected sales channels and marketplaces. Zero lock-in contracts.

Monthly Billing

Annual (20% Off)

Your Active Plan

Free Tier

$0/ month

⚡ Capacity: 200 orders/mo

Up to 200 total orders / month

2 connected sales channels

Basic economic nexus matrix

Monthly manual sync updates

Zero-PII immediate data scrubbing

No credit card required. Free forever under 200 orders/mo.

Starter Plan

$23/ month

$29/moBilled annually ($276/yr)

⚡ Capacity: 1,000 orders/mo

Up to 1,000 total orders / month

Unlimited store connections

Daily 24-hr automated incremental sync

Automated email alerts at 80% threshold

Full 50-state statutory rule breakdown

Zero-PII data privacy guarantee

Professional Plan

$63/ month

$79/moBilled annually ($756/yr)

⚡ Capacity: 5,000 orders/mo

Up to 5,000 total orders / month

Hourly real-time order processing

Downloadable CPA audit export files (CSV)

Scenario growth projection simulator

Enterprise Automation

$119/ month

$149/moBilled annually ($1428/yr)

⚡ Capacity: 50,000 orders/mo

Up to 50,000 total orders / month

Real-time automated multi-channel sync

Unlimited connected store platforms

Downloadable CPA audit reports & CSV export

Full 50-state economic & physical nexus tracking

Zero-PII Privacy Shield: We never see or store your customers' names, addresses, or credit cards.

Statutory Accuracy: Updated for post-Wayfair 2026 statutory rules across all 50 states.

Find Out In 60 Seconds If You Owe Sales Tax In Other States

Why You Need Omnichannel Nexus Tracking

State Audit Penalties & Limits

Sales Channels Stack Up

EcomNexusHub Shield

Automated multi-channel sync

Alerts before a threshold breach

CPA-ready CSV exports

Zero-PII Privacy Protection

Supported E-Commerce Stores & Marketplaces

Sales Tax Nexus & Multi-Channel Compliance Answers

How do I know if my store has triggered economic nexus in other states?

Does sales tax collected by Amazon, Etsy, or TikTok count toward my threshold?

What is physical nexus, and does Amazon FBA create it?

Is the Free Tier really free forever? Is a credit card required?

How does EcomNexusHub protect my data and customer privacy (Zero-PII Vault)?

What should I do immediately after crossing a state threshold?

How fast can I connect my stores and see my multi-channel report?

Predictable Tiered Pricing Built for E-Commerce Growth

Free Tier

Starter Plan

Professional Plan

Enterprise Automation