Screen 50 states plus DC
Applies each jurisdiction's threshold, comparator, transaction logic, sales base, marketplace treatment, and measurement period.
Tool preview
Where might your business have sales tax nexus?
Nexus Monitor screens all 50 states and the District of Columbia using jurisdiction-specific rules, then adds a deeper Washington assessment. The working assessment, your facts, saved history, personalized result, and action center stay behind sign-in.
Every state has its own test
Dollar thresholds, transaction tests, sales definitions, marketplace treatment, and measurement periods differ by jurisdiction. One nationwide total cannot answer the question.
Physical presence comes first
Employees, agents, inventory, facilities, deliveries, installations, and other in-state activity can create nexus below a state's economic threshold.
Then verify and act
The monitor separates exposed, approaching, registered, and unassessed states, preserves the dated rule and official source, and routes Washington issues into a deeper local review.
Tool preview
What Nexus Monitor does
Nexus Monitor compares state-by-state sales and physical-presence facts with a dated 51-jurisdiction rule library, preserves the authority behind each result, and keeps the deeper Washington analysis one step away.
The working tool is available after you sign in.
This public page shows capabilities and deliverables only. It does not collect your facts, accept documents, or calculate a personalized result.
Log in or create a free account to use it.
Map physical presence
Reviews people, property, inventory, facilities, deliveries, installations, and other in-state activity that can override a small-seller threshold.
Preserve official sources
Stores the rule version, reviewed date, effective date, and direct state authority used for every result.
Open Washington detail
Adds Washington B&O classification, marketplace, city-license, activity-timeline, and voluntary-disclosure review beyond the national screen.
What the tool produces
- A dated dashboard separating exposed, approaching, registered, below-threshold, and unassessed jurisdictions.
- A state-by-state explanation of the threshold, sales counted, marketplace treatment, and measurement period.
- An official source and next action attached to every jurisdiction result.
- A deeper Washington assessment for B&O, sales tax, local licensing, and possible voluntary disclosure.
Behind on Washington obligations?
If nexus may have started in a prior year and the business never registered, DOR's Voluntary Disclosure Program may be an option. For businesses that qualify, DOR says the lookback is generally limited to the prior four years plus the current year and penalties may be partially or fully waived; full statutory interest still applies, and collected-but-unremitted sales or use tax is treated differently. Full benefits generally require no active DOR registration, no tax reporting to DOR, and no DOR enforcement contact in that period, and no evasion or misrepresentation. DOR asks applicants to apply before registering. Our VDA workflow preview shows how the tool organizes eligibility, exposure, and evidence for a voluntary disclosure application after you sign in.
Preview the VDA workflow