Charted: Remote Sales-Tax Collection Hit 11.4% of Large-State GST — Fast Enough to Offset Erosion in Only 4 of 12 States

In June 2018 the Supreme Court decided South Dakota v. Wayfair and ended the physical-presence rule that had shielded most remote sellers from state sales-tax collection. State legislatures and departments of revenue spent the next two years stacking economic-nexus thresholds and marketplace-facilitator statutes on top of Multistate Tax Commission (MTC) model language. The desk question that matters for fiscal capacity is not whether remote remittance rose — it did — but whether it rose fast enough to offset ongoing base erosion in the largest general-sales-tax (GST) states.

This desk’s answer, joining large-state Department of Revenue (DOR) remote and marketplace footnotes to Census State Tax Collections (STC) GST denominators and a modeled service-mix erosion counterfactual, is split. Across a twelve-state panel, remote-collection share of GST climbed from 2.1% in FY2017 to 11.4% in FY2025 — a +9.3 percentage-point rise. Cumulative Wayfair-attributable recovery through FY2025 is about $49.2 billion; the modeled erosion drag over the same FY2018–25 window is about $44.0 billion. The net is +$5.2 billion — recovery ahead in aggregate. Strip the panel into states and the picture hardens: only four of twelve (California, Texas, Florida, Washington) clear a clean net offset above +$0.5B. Three sit near parity. Five still run short.

The interactive dashboard above walks the share path, remittance channel mix, state ladder, e-commerce-versus-offset scatter, recovery-versus-erosion stacks, and nexus adoption timeline. Toggle panels; filter by Census region; sort by remote share, net offset, recovery dollars, e-commerce intensity, or years to an 8% remote share.

What “remote-collection share” measures

Remote-collection share is remote-seller plus marketplace-facilitator remittance divided by STC (or DOR-aligned) GST. It is not the share of taxable retail that moved online. It is the share of the sales-tax receipt tape that arrives through economic-nexus and marketplace channels rather than through brick-and-mortar or other in-state filings.

That distinction matters. A state can print a rising remote share while still losing taxable base to untaxed services, digital leftovers, and necessity exemptions that never entered the remote channel. Wayfair recovered a class of previously under-collected goods sales. It did not rewrite service-taxability statutes. GAO’s pre- and post-decision framing on remote sales administration is consistent with that split: collection authority expanded; base design did not automatically broaden.

From Quill leakage to marketplace remittance

Under Quill, many remote sellers without physical presence did not collect. Voluntary programs, click-through nexus, and affiliate rules patched holes unevenly. By FY2017 our large-state desk path still shows remote remittance near 2.1% of GST — roughly $6.8 billion across the panel aggregate.

Wayfair landed in mid-2018. Economic-nexus effective dates clustered in late 2018 and 2019; marketplace-facilitator laws followed on a similar cadence. The Share path panel shows the kink: remote dollars jump from $9.4B in 2018 to $16.8B in 2019 and $24.1B in 2020 as platforms began remitting on behalf of third-party sellers. By FY2025 the aggregate is about $48.6B, or 11.4% of GST.

Marketplace facilitators now dominate the remittance channel. In the FY2025 mix, marketplace remittance is about 7.8 percentage points of GST and direct remote-seller remittance about 3.6 points, with the remaining 88.6% still in-state / physical-presence GST. Marketplace dollars are roughly 68% of remote remittance. That concentration is why DOR footnotes that isolate facilitator lines often move the remote share more than pure remote-seller registration counts.

Did recovery outrun erosion?

The offset test is deliberately conservative. Recovery is a desk haircut on collections above the FY2017 remote run-rate — not the entire remote dollar stock, which would include voluntary and affiliate remittance that existed before Wayfair. Erosion drag is a modeled service-mix counterfactual: how much GST the panel would have lost relative to a 2017 breadth baseline as household spending continued to tilt toward lightly taxed services.

On that framing, cumulative recovery ($49.2B) leads cumulative erosion ($44.0B) by $5.2B through FY2025. The Cumulative offset toggle on the share-path panel shows the two stock series crossing into net-positive territory after the 2020–21 remittance surge. Aggregate victory is real. It is also thin relative to the dollar scale of GST, and it is uneven across states.

Four states clear the +$0.5B “ahead” band and carry about 48% of panel GST weight. Three sit within ±$0.5B. Five — including Illinois, Pennsylvania, Ohio, and Michigan — still print negative nets. High remote shares do not guarantee positive offsets when the erosion counterfactual is large relative to the absolute remittance base.

Speed of the climb mattered as much as the level

Median time from economic-nexus effective date to a remote share of 8% is about 3.5 years in the panel. Washington cleared that bar in roughly 1.5 years; Michigan needed about 4.5. Early marketplace-facilitator effective dates and high e-commerce intensity both compress the climb. The Offset scatter panel plots e-commerce intensity against net offset: Washington, Florida, Texas, and California sit in the upper-right; several Midwestern GST states sit lower-left even after remote shares crossed into the high single digits.

Adoption timing was national, not gradual. The Nexus adoption panel shows economic-nexus states jumping from effectively zero GST adopters in 2017 to the mid-30s by 2019 and plateauing near 45 (among GST states) by 2021. Marketplace-facilitator statutes tracked a year behind, then converged. After 2021 the extensive margin was largely done; intensive growth came from rising online goods volume and better facilitator compliance, not from new statute waves.

Caveats and confidence

Several limits bind the readout.

1. Footnote heterogeneity. DOR annual reports differ in whether they isolate marketplace remittances, remote-seller economic-nexus filings, and legacy click-through or affiliate programs. Desk joins reallocate ambiguous lines; some state shares are more modeled than disclosed.
2. Erosion is a counterfactual, not an audit. The service-mix drag is a desk construct against a 2017 breadth baseline. It is not a statutory inventory of untaxed services, and it will not match any single DOR taxable-base reconciliation.
3. Fiscal calendars. FY labels approximate calendar year-ends; a few states report on different fiscal calendars, which smooths or shifts the 2018–19 kink.
4. Panel coverage. Twelve large GST states dominate national GST dollars but do not speak for small states or for the five states without a broad state GST.
5. Confidence labels. STC GST denominators and many remote/marketplace line items are disclosed; national aggregates, offset balances, and mid-series interpolations are desk-modeled joins informed by GAO and MTC framingnot official Treasury estimates.

What desks should watch next

Three markers will decide whether the post-Wayfair recovery keeps pace with base pressure. First, marketplace share of remote remittance — if facilitator concentration stays near two-thirds, compliance risk concentrates in a handful of platforms. Second, Midwest nets — Illinois, Michigan, Ohio, and Pennsylvania need either faster remote growth or slower modeled erosion to leave the short band. Third, service-taxability reforms — Wayfair recovered remote goods; any durable offset against services leakage still depends on statute design that nexus rules do not supply.

For one-line briefings: remote-collection share in the large-state panel is about 11.4%, up from 2.1% before Wayfair; aggregate recovery leads erosion by roughly $5.2B through FY2025; only four of twelve large GST states clear a clean offset.