Economic nexus · State registration · Return filing · TaxJar · Avalara

Sales tax compliance is the most overlooked liability in your e-commerce clients’ businesses.

Since South Dakota v. Wayfair (2018), economic nexus means e-commerce sellers owe sales tax in states they’ve never set foot in. most of your small business clients don’t know which states they’ve crossed the threshold in. we track it, flag it, and handle the filings. Pair with tax return preparation, payroll, or a full CPA firm engagement.

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Post-Wayfair compliance

Economic nexus — what it means for your clients and why it matters now.

Before 2018, a business only owed sales tax in states where it had physical presence — an office, a warehouse, an employee. the Wayfair ruling changed that permanently. now a business can owe sales tax in a state simply by selling enough there.

The problem: most small e-commerce businesses have crossed nexus thresholds in multiple states without realising it. and most CPA firms don’t have the bandwidth to proactively track 50 state thresholds for every client. we do.

State	Threshold	Notes
Most states	$100K or 200 txns	Standard post-Wayfair threshold
California	$500K revenue	Revenue only — no transaction count
New York	$500K + 100 txns	Both conditions must be met
Texas	$500K revenue	Revenue only
Florida	$100K revenue	Effective July 2021
Kansas	No threshold	Any sales = nexus
Amazon FBA states	Varies	Inventory location creates physical nexus

Thresholds subject to legislative change. we track current state rules for every active client.

What we handle

End-to-end sales tax compliance for your CPA firm’s clients.

Nexus analysis & threshold monitoring

Monthly revenue and transaction tracking by state for every client. threshold alerts when a client approaches nexus in a new state — before they're non-compliant, not after.

State registration support

Once nexus is triggered, we support the state registration process — gathering required information and preparing the registration application for your review and submission.

Return preparation & filing

Sales tax returns prepared and filed in all states where your client has nexus. monthly, quarterly, or annual filing cadence per state requirements. filed through TaxJar, Avalara, or manually where required.

Amazon marketplace facilitator review

Amazon collects and remits sales tax in most states as a marketplace facilitator — but sellers still have residual obligations in some states. we review your client's Amazon footprint and identify any remaining filing requirements.

Voluntary disclosure support

If a client has prior-period nexus exposure they haven't addressed, we support the voluntary disclosure process — calculating estimated back taxes and preparing disclosure documentation for your review.

Reconciliation with bookkeeping

Sales tax collected reconciled against sales tax remitted every period. balance sheet sales tax liability account kept current. no surprise liabilities at year-end.

Your e-commerce clients probably have nexus they don't know about. Let's find out.

Book a call and describe your e-commerce client base. We'll walk through how nexus monitoring and return filing works as part of their ongoing accounting engagement.

Book a discovery call

Or email us directly at accounting@nimblechapps.finance — no forms, no bots.

Services

QBO & Xero bookkeeping — certified, accurate, on time

For CPA Firms

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Industries

Real estate accounting — trust accounts, rent rolls, CAM reconciliations

Resources

The true cost of a local bookkeeper vs a certified offshore accountant

Company

Build your accounting career with a structured path to EA and CMA

Sales tax compliance is the most overlooked liability in your e-commerce clients’ businesses.

Economic nexus — what it means for your clients and why it matters now.

End-to-end sales tax compliance for your CPA firm’s clients.

Your e-commerce clients probably have nexus they don't know about. Let's find out.