What is trailing nexus?

Most states make you keep filing for a while after you drop below their threshold. California runs through the next full calendar year. Texas uses a rolling twelve months. We track each state's rule so you cancel on the right date, not too early.

Will I get in trouble for canceling a permit?

Not if you do it in the right order. We file every outstanding and final return first, then guide the cancellation. The real risk is canceling early or skipping a final return, which is exactly what we prevent.

Which platforms do you support?

Amazon, Shopify and WooCommerce, with BigCommerce, Etsy, Walmart and eBay supported through manual entry. You can also enter your states by hand on any platform.

Do you file my returns?

Yes. During the wind-down we file the zero-dollar returns so nothing lapses, and once you're deregistered in a state there's nothing left to file.

How is this different from Avalara or TaxJar?

They help you register and file more. We help you deregister and file less. We only charge for the states you keep.

No. TrailingZero is software that flags deregistration opportunities and handles filings. For complex situations we tell you when to bring in your accountant.

Is TrailingZero live?

Yes. Free audits are live now — run yours in minutes. Connect a store read-only or enter your registered states by hand to see which you can cancel and what it saves.

What is the economic nexus threshold in Pennsylvania?

$100,000 in sales, measured over previous calendar year, in effect since July 2019.

Do marketplace sales count toward economic nexus in Pennsylvania?

Yes, they count toward the threshold even though the marketplace collects the tax.

No. This page is general education built from public sources and the rules change often. Confirm your specific situation with the state's tax authority or your accountant before you register or deregister.

Economic nexus

Pennsylvania economic nexus threshold

Pennsylvania's economic nexus rule decides when out-of-state sellers must collect sales tax. Here's the current threshold, how it's measured, and how the transaction-count rule has changed.

By John DoeReviewed by Jane Doe, CPAUpdated June 2026How we verify

Confidence: moderate

Parts of this page (often the trailing-nexus timing) are still being verified, so our confidence here is moderate rather than high. Confirm anything you act on with Pennsylvania Department of Revenue or a tax professional before you register or deregister.

Sales threshold: $100,000
Transaction threshold: Never used
Logic: sales only
Measured over: previous calendar year
Effective: July 2019

Source: Pennsylvania Department of Revenue

Nexus & savings calculator

Estimate whether you still have nexus in Pennsylvania — and what canceling could save.

State

Annual sales into Pennsylvania

Transactions (orders) per year

Pennsylvania no longer counts transactions — only sales matter here.

I have physical presence hereFBA/3PL inventory, an employee, or an office in Pennsylvania

Filing frequency

Cost per return

Physical presence
Sales over $100,000
Transactions (not counted here)

Likely eligible to cancel

Based on these numbers you likely no longer have nexus in Pennsylvania. You can usually deregister after clearing the trailing-nexus window and filing your final return.

Trailing nexus: Pennsylvania applies trailing nexus — expect to keep filing for roughly 24 months after your nexus ends. Confirm the exact window before canceling.

You could stop paying

$600/ yr

How to cancel in Pennsylvania →

Estimate only — general education, not tax advice. Confirm with Pennsylvania's tax authority before you register or deregister.

What is economic nexus in Pennsylvania?

Economic nexus means you can owe sales tax in Pennsylvania based purely on your sales volume there — no physical presence required. It traces to the 2018 South Dakota v. Wayfair decision. Pennsylvania's threshold took effect July 2019.

Today the threshold is $100,000 in sales, measured over previous calendar year.

The transaction-count history

Pennsylvania has never used a transaction-count trigger — only the sales figure matters.

If your only nexus reason is the transaction count, watch it closely — a low-revenue, high-order business can cross it.

What counts toward the threshold

Gross sales on all channels including taxable and exempt sales; for marketplace facilitators, includes both direct and facilitated sales; for marketplace sellers, only direct sales and sales through non-collecting facilitators count; marketplace-facilitated sales where the facilitator collects and remits are excluded from the seller's own threshold calculation

Marketplace-facilitated sales (Amazon, Etsy, eBay) count toward your Pennsylvania threshold even when the marketplace remits the tax.

Where TrailingZero fits

TrailingZero connects to your store read-only, maps where you actually have nexus state by state, and tracks your sales against Pennsylvania's threshold so you register only when you truly cross it — and deregister when you fall below. During any wind-down it can file the zero-dollar returns so nothing lapses — and you only pay for the states you genuinely keep. Run a free audit anytime; this page is free education either way.

Pennsylvania Economic nexus FAQ

What is the economic nexus threshold in Pennsylvania?: $100,000 in sales, measured over previous calendar year, in effect since July 2019.
Did Pennsylvania remove the 200-transaction rule?: Pennsylvania has never used a transaction-count trigger — only the sales figure matters.
Do marketplace sales count toward economic nexus in Pennsylvania?: Yes, they count toward the threshold even though the marketplace collects the tax.
Is this tax advice?: No. This page is general education built from public sources and the rules change often. Confirm your specific situation with the state's tax authority or your accountant before you register or deregister.

See what you can stop paying in Pennsylvania

Run a free audit and see which registrations you can drop — in minutes, no card required.

Start free →Free audit · no card required.

Other states

See all states →

Sources

Primary sources reviewed for this page. Data current as of June 2026.

TrailingZerois software, not a CPA or law firm, and this page is general education — not tax or legal advice. State rules and thresholds change frequently; confirm your situation with the state's tax authority or your accountant before you register or deregister. See how we research and review this data in our editorial & accuracy policy.