NexusRegister
Brian Miller, CPA
Book free assessment
For Shopify · Amazon · Walmart · Etsy sellers

Multi-state sales tax registration, handled clearly and professionally.

A CPA-led project to identify where your ecommerce business has sales tax nexus, register in the agreed-upon states, and hand you a clean filing calendar. No software contract. No retainer. One focused engagement, then done.

Especially relevant for Amazon FBA and multi-channel sellers with inventory or customers across multiple states.

Setup
$750
Per State
$300
Typical Project
$3,150
No commitment · CPA-led · 48-business-hour PDF turnaround
2–3 week typical timeline Active CPA · Not a software platform Flat fee per state
Quick check

Three questions to gauge your nexus exposure.

Not a substitute for a real review — but enough to tell you whether you should be paying attention. Takes about 30 seconds.

Question 01 of 03
Roughly how much do you sell into states outside your home state per year?
Low exposure · For now

You're probably fine — but worth monitoring as you grow.

Based on your answers, you're likely below the registration threshold in most states and don't have inventory triggers creating physical nexus. The state thresholds reference is the right next step — keep an eye on it as your sales scale, and revisit this if anything changes.

Quick check only · Not tax advice
Moderate exposure · Worth a look

You may have nexus in more states than you're registered in.

Your sales activity, inventory situation, or current registration footprint suggests there's likely a gap. It's not necessarily urgent, but it's the kind of thing that gets harder to fix later. Either work through the thresholds reference yourself, or take 15 minutes on a free call to map it out.

Quick check only · Not tax advice
High exposure · Worth addressing

You likely have meaningful nexus exposure right now.

Significant out-of-state sales, inventory creating physical nexus, and limited current registrations is a common combination — and it's the one most likely to surface during diligence, financing, or a state notice. The fastest paths forward: a free 15-minute call to talk it through, or a $97 written assessment delivered within 48 business hours.

Quick check only · Not tax advice
Free reference · No email required

Where do you actually owe sales tax? Start with the state thresholds.

A practitioner's quick reference covering economic nexus thresholds for all 45 U.S. states with statewide sales tax, plus DC and Puerto Rico. Includes practical state-by-state differences that catch ecommerce sellers off guard — including marketplace threshold treatment and states with unusual nexus rules.

11 pages Current as of May 2026 Built by a CPA
Download the PDF
No email · No signup · Just the file
Or read the full guide on the web →
NexusRegister · Brian Miller, CPA
State-by-State Economic Nexus Reference for Ecommerce Sellers
Pages11
States covered46
UpdatedMay 2026
FormatPDF
Paid · Written deliverable

Get a written nexus assessment for your business — $97.

If you want a CPA to actually look at your numbers — not a generic threshold table — this is the lowest-cost way in. One flat fee, one written deliverable, no call required.

01
Pay $97 via Stripe
One-time charge. No subscription, no contract.
02
Complete a short intake
~10 questions on sales channels, sales-by-state, FBA inventory, and current registrations. About 8 minutes.
03
Get your PDF within 48 business hours
A written assessment naming the states where you likely have registration obligations, states to monitor, and gotchas specific to your business.
Get my nexus assessment — $97
Secure checkout via Stripe · Delivered within 48 business hours

Prefer to talk first? Book a free 15-minute call instead →

What you get
Written Nexus Assessment
  • States where you likely have registration obligations
  • States to monitor as you grow
  • Marketplace facilitator notes for Amazon, Walmart, Etsy
  • FBA inventory state implications
  • Suggested next steps — registration order and timing
FormatPDF
Turnaround48 biz hrs
Price$97 flat
Who this is for

If any of these sound like you, this is the right page.

Trigger 01
You sell on Shopify, Amazon, Walmart, or your own site nationally
Your registration footprint may no longer match where your customers live. Many ecommerce sellers are surprised to find that registration may apply in multiple states.
Trigger 02
Your FBA inventory is stored in multiple states
Inventory location can create a different fact pattern than purely remote sales. Where Amazon stores your stock matters for your registration footprint.
Trigger 03
You received a state notice or questionnaire
State correspondence shouldn't be ignored or answered casually. The first step is understanding what they're asking and whether registration alone resolves it.
Trigger 04
A buyer, lender, or investor is reviewing the business
Sales tax exposure is one of the most commonly flagged issues in ecommerce diligence. A clean nexus review and registration history can turn a deal-blocker into a non-issue.
Trigger 05
Your income tax CPA doesn't handle sales tax
Many CPAs are great at income tax but don't want to manage multi-state sales tax registrations. This service works alongside your existing CPA, not instead of them.
Trigger 06
You don't want to learn another tax software
Avalara and TaxJar are great if you want a software platform. This is for sellers who want a CPA to handle the registration project once, cleanly, and hand it back.
Pricing

Flat fee. No software contract. No annual retainer.

One project setup fee. One flat fee per state. Optional ongoing monitoring if you want it. Same setup fee whether the project covers 3 states or 13.

Project setup
Engagement setup, written sales tax footprint review, registration plan, document intake, and project coordination.
$750
One-time
State registration
Application preparation, portal setup, registration submission, follow-up, permit tracking, and final account documentation for each state.
$300
Per state
Optional monitoring
Monthly review of sales-by-state against monitored thresholds, new-state alerts, and practical next-step recommendations. Added only if you want it.
$85
Per month · Optional
Example project
Setup + 8 state registrations
$3,150

Pricing covers professional fees only. Pass-through state filing fees, registered agent fees, software subscriptions, ongoing return filing, and voluntary disclosure work are billed separately if needed.

How it works

A focused project with a clean handoff.

Five steps from initial call to final registration packet. The goal isn't to build you a tax department. The goal is to get you registered cleanly and leave you with everything you need to file going forward.

01
Free assessment call
15-minute sales tax footprint review
We review your sales channels, approximate sales-by-state, current registrations, inventory facts, and any state correspondence. You leave with a practical view of where the issue likely sits and whether a paid project makes sense.
02
After engagement
Written nexus and registration plan
A written summary of states reviewed, states recommended for registration, states to monitor, and any areas that may need a separate prior-period review. If something unusual comes up, I flag it before we proceed.
03
Client intake
Document collection and applications
I collect formation details, EIN information, responsible-party information, platform data, and any required authorizations. Then I prepare and submit the agreed-upon state registration applications.
04
Typical timeline 2–3 weeks
Permit tracking and issue resolution
Some states issue permits quickly. Others ask follow-up questions or take longer. I track each application, respond to routine portal issues, and keep you updated until registrations are complete.
05
On delivery
Final registration packet and filing calendar
Permit numbers, account details, filing frequencies, portal access notes, registration effective dates, and a 24-month filing calendar so you know exactly what has to happen next.
Who you're working with

Run by an active CPA. Not a software company.

Brian Miller
CPA · MBA · MSF

I came to multi-state sales tax registration after years of dealing with the operational side of corporate finance — the part where you're responsible for clean records, regulator communications, and decisions that have to hold up under scrutiny. The same instincts apply here.

The work isn't complicated. But it has to be precise, it has to be done by someone who treats your registration record as part of your permanent compliance file, and it shouldn't disappear into a software queue. That's why I built this as a focused service rather than another platform.

You're not buying a SaaS subscription, a referral to an unknown third party, or a generic filing service. You work directly with a CPA who manages the project and communicates the status clearly. If something unusual comes up — prior-period exposure, a state asking unexpected questions — I flag it before moving forward.

This service is narrow by design. I'm not trying to replace your income tax CPA, your bookkeeper, your attorney, or your sales tax software. I help with the specific gap many ecommerce sellers run into: understanding where registration may be needed and getting those registrations completed cleanly.

Best fit

Some honest filtering before you book.

This service is intentionally narrow. If you're in the left column, the assessment call will probably go somewhere useful. If you're in the right column, I'll tell you on the call and point you to a better fit.

Good fit
  • Ecommerce sellers with sales in multiple states
  • Shopify, Amazon, Walmart, Etsy, or hybrid sellers
  • Businesses needing registration cleanup before financing or diligence
  • Owners who want CPA-led help instead of a software rollout
  • Companies with clean sales-by-state data or platform reports
Not the right fit
  • Looking for full outsourced monthly return filing
  • Large unresolved prior-period liabilities in many states
  • Need legal opinions, audit defense, or litigation support
  • No usable sales-by-state information available
  • Already need a full enterprise tax automation rollout
Common questions

Direct answers to common client questions.

What is sales tax nexus?
Nexus is a connection between your business and a state that can create tax obligations. Economic nexus is usually based on sales activity into a state. Physical nexus can come from inventory, employees, property, or other in-state activity.
Will you tell me exactly where I have to register?
I provide a practical nexus review and registration recommendation based on the information and records you provide. If something looks like it needs deeper analysis — significant prior exposure, legal uncertainty, voluntary disclosure considerations — I flag that before we move forward. The point of the assessment call is to make sure we both have the same picture before any work starts.
What's the difference between the free call and the $97 written assessment?
The free 15-minute call is conversational — useful if you want to talk through your situation and ask questions in real time. The $97 written assessment is a deliverable: a PDF you can save, share with a partner or income tax CPA, and reference later. The written assessment is the better fit if you want a defensible record of where things stood, or if you'd rather skip a call entirely.
What about states where Amazon already collects sales tax?
Marketplace facilitator rules can reduce collection obligations on marketplace sales, but they don't automatically answer every registration question. Your own-site sales, FBA inventory, wholesale activity, exempt sales, and state-specific rules still need to be reviewed.
Do you also handle monthly return filing?
This service is a registration project. Ongoing return filing isn't included in the base fee. If you need filing support, we can discuss whether it makes sense to add it or whether a software platform or specialist provider would be a better long-term fit.
What if I might already owe back taxes?
Prior-period exposure is separate from forward registration. In some cases, registering without addressing prior exposure first can create problems. If that comes up during the assessment, I'll pause and we'll discuss options — which may include a voluntary disclosure process or a referral to a specialist.
Why not just use Avalara or TaxJar?
For some businesses, that's the right answer. This service is a better fit if you want a focused registration project, CPA-led review, transparent flat-fee pricing, and a clean handoff before deciding whether you need ongoing software.
What states do you cover?
All 45 U.S. states with statewide sales tax, plus Washington, D.C. The five states without statewide sales tax (Alaska, Delaware, Montana, New Hampshire, Oregon) generally don't require registration, though Alaska in particular has local jurisdictions that may apply in certain cases.
How long does the whole process take?
Most projects take 2–3 weeks after document collection. Some states issue permits quickly. Others take longer or need follow-up. The timeline depends on the states involved and how complete your information is.
When you're ready

Three ways to take this further. Pick the one that fits.

No pressure on which path you take. Most ecommerce sellers don't need a CPA every quarter — they need one when they hit a specific moment. Pick what matches where you are right now.

Evening & weekend slots available · Eastern Time · Active CPA