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.

Does South Dakota have a sales tax?

Yes. The statewide base rate is 4.2%. Remote sellers collect it once they have nexus.

When do I have to register for sales tax in South Dakota?

When you have physical presence there or cross $100,000 in sales over previous or current calendar year.

Can I cancel my South Dakota registration if I'm under the threshold?

Generally yes, after clearing South Dakota's trailing-nexus window and filing a final return.

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.

Seller's guide

Sales tax in South Dakota

Everything an online seller needs to know about sales tax in South Dakota: the rate, when you have to register, marketplace rules, filing, and when you can cancel — in plain English.

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 South Dakota Department of Revenue or a tax professional before you register or deregister.

Statewide base rate: 4.2%
Economic threshold: $100,000 in sales
Marketplace law: Yes
Trailing nexus: Minimal
Tax authority: South Dakota Department of Revenue

Source: South Dakota Department of Revenue

Nexus & savings calculator

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

State

Annual sales into South Dakota

Transactions (orders) per year

South Dakota no longer counts transactions — only sales matter here.

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

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 South Dakota. You can usually deregister after clearing the trailing-nexus window and filing your final return.

Trailing nexus: South Dakota has limited or no trailing-nexus window — you can generally deregister once your nexus has ended and final returns are filed.

You could stop paying

$600/ yr

How to cancel in South Dakota →

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

Do you need to collect sales tax in South Dakota?

You have a duty to collect once you have nexus: physical presence (inventory, staff, an office) or economic nexus from crossing $100,000 in sales over previous or current calendar year. South Dakota used to trigger nexus at 200 transactions but removed that count in July 2023 — only the sales figure matters now.

The South Dakota rate

State rate temporarily reduced from 4.5% to 4.2% effective July 1, 2023, under HB 1137. The reduction is set to expire (sunset) on June 30, 2027, at which point the rate reverts to 4.5% unless the legislature acts to extend it.

Marketplace and direct sales

Marketplaces like Amazon collect South Dakota tax for you, but those sales still count toward your threshold. Direct sales on your own store you collect yourself.

Filing and zero returns

Once registered, South Dakota requires a return every assigned period even when you owe $0 — miss one and you can face penalties. The South Dakota Department of Revenue assigns filing frequency at registration based on expected taxable sales volume.

When you can cancel

If your South Dakota returns are mostly $0, you may be over-registered. Canceling your South Dakota sales tax license makes sense if your gross sales into South Dakota have been below $100,000 in both the current and the immediately preceding calendar year, meaning you no longer meet the economic nexus threshold. The main catch is that you must file and pay all outstanding returns before the cancellation request will be accepted via the MTA portal — missing that step can result in penalties and the license remaining open.

Where TrailingZero fits

TrailingZero connects to your store read-only, maps where you actually have nexus state by state, and maps your real nexus in South Dakota and flags whether you should register, keep filing, or cancel. 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.

South Dakota Sales tax guide FAQ

Does South Dakota have a sales tax?: Yes. The statewide base rate is 4.2%. Remote sellers collect it once they have nexus.
When do I have to register for sales tax in South Dakota?: When you have physical presence there or cross $100,000 in sales over previous or current calendar year.
Can I cancel my South Dakota registration if I'm under the threshold?: Generally yes, after clearing South Dakota's trailing-nexus window and filing a final return.
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 South Dakota

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.