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's the economic nexus threshold in California?

California uses $500,000 in sales (preceding or current calendar year). Under it, with no physical presence, you generally don't have economic nexus.

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.

Deregistration guide

Can I cancel my sales tax registration in California?

If you registered for a sales tax permit in California to be safe and most of your returns now read $0, you may be paying to file in a state you no longer owe. Here's when you can cancel in California — and how to do it without tripping a penalty.

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

Can you deregister below threshold?: Yes, after trailing nexus
Trailing-nexus window: ≈ 12 months
Final return required: Yes
How to cancel: the online portal or form CDTFA-65
Tax authority: California Department of Tax and Fee Administration (CDTFA)

Source: State trailing-nexus rule

Short answer

Yes — once your nexus has genuinely ended. Canceling your California seller's permit makes sense once your California sales have been below $500,000 for a full calendar year and you have no physical presence in the state — you can close effective January 1 of the following year after trailing nexus expires. The catch is California's strict one-year trailing nexus rule: you must keep collecting and filing through December 31 of the year after you last exceeded the threshold, and you must file a final return (Form CDTFA-65 or via the online portal) and pay all outstanding taxes before the CDTFA will close your account.

Nexus & savings calculator

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

State

Annual sales into California

Transactions (orders) per year

California no longer counts transactions — only sales matter here.

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

Filing frequency

Cost per return

Physical presence
Sales over $500,000
Transactions (not counted here)

Likely eligible to cancel

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

Trailing nexus: California applies trailing nexus — expect to keep filing for roughly 12 months after your nexus ends. Confirm the exact window before canceling.

You could stop paying

$600/ yr

How to cancel in California →

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

Do you still have nexus in California?

You can only cancel once your obligation has ended. Two things create it: physical presence (inventory, an employee, an office) and economic nexus (crossing $500,000 in sales).

For Amazon FBA and 3PL sellers the sneaky one is physical nexus: storing inventory in California creates it. Storing inventory in California — including in Amazon FBA fulfillment centers — creates physical nexus for sales tax purposes under Revenue and Taxation Code § 6226. If that inventory has since left the state, your physical nexus may have already ended even though the registration is still open.

Trailing nexus in California

A remote seller must remain registered and continue collecting use tax through the entire calendar year in which it exceeds the $500,000 threshold AND through the entire following calendar year. Deregistration is permitted effective January 1 of the second year after the threshold was last exceeded, provided the seller had no physical nexus and its prior-year sales (aggregated with related persons) did not exceed $500,000. Mid-year deregistration is not permitted if the seller anticipates re-crossing the threshold during the current year.

Sellers may not deregister mid-year. Deregistration is only effective on January 1 of a subsequent year. A final return must be filed and all outstanding tax, penalties, and interest must be paid before close-out is complete. The CDTFA cautions that sellers should not close their certificate if they anticipate re-registering during the current year.

How to cancel your California sales tax permit

Confirm both your physical and economic nexus in California have actually ended.
Work through California's trailing-nexus window and keep filing (even $0 returns) until it closes.
File any outstanding returns and the final return (CDTFA-65), marking it final.
Close the account via the online portal or form CDTFA-65.
Keep your records; states can review a closed account for several years.

Where TrailingZero fits

TrailingZero connects to your store read-only, maps where you actually have nexus state by state, and computes the exact date you can deregister in California after trailing nexus. 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.

California Can I cancel FAQ

Can I get in trouble for canceling my California sales tax permit?: Not if you do it in the right order. The risk comes from canceling before California's trailing-nexus window ends or skipping a final return. Sellers may not deregister mid-year. Deregistration is only effective on January 1 of a subsequent year. A final return must be filed and all outstanding tax, penalties, and interest must be paid before close-out is complete. The CDTFA cautions that sellers should not close their certificate if they anticipate re-registering during the current year.
Do I have to keep filing in California after I stop selling there?: Usually yes, for a while. A remote seller must remain registered and continue collecting use tax through the entire calendar year in which it exceeds the $500,000 threshold AND through the entire following calendar year. Deregistration is permitted effective January 1 of the second year after the threshold was last exceeded, provided the seller had no physical nexus and its prior-year sales (aggregated with related persons) did not exceed $500,000.
What's the economic nexus threshold in California?: California uses $500,000 in sales (preceding or current calendar year). Under it, with no physical presence, you generally don't have economic nexus.
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 California

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

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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.