Sales Tax Compliance
US Sales Tax.
All 50 States.
Post-Wayfair economic nexus means most businesses with US customers have sales tax obligations they may not know about. We handle the full compliance lifecycle: nexus analysis, registration, filing, and voluntary disclosure for historical exposure.
What's included
The 2018 Supreme Court decision in South Dakota v. Wayfair established that states can require out-of-state sellers to collect sales tax based on economic activity alone — no physical presence required. Today, virtually every state with a sales tax has an economic nexus threshold, typically $100,000 in sales or 200 transactions per year.
For global companies selling to US customers — especially SaaS companies, e-commerce businesses, and professional services firms — this means multi-state sales tax compliance is not optional. And the complexity compounds: each state has its own registration requirements, tax rates, product taxability rules, and filing schedules.
We start with a comprehensive nexus analysis across all 50 states, assess the taxability of your products and services in each nexus state, register you where required, and manage ongoing filings. For businesses with historical exposure, we negotiate Voluntary Disclosure Agreements to limit lookback periods and waive penalties.
Who this is for
SaaS companies with US customers in multiple states, e-commerce businesses shipping physical goods across the US, professional services firms with revenue above state economic thresholds, and any foreign-owned US entity that has been operating without a formal sales tax compliance program.
If you sell to US customers and haven't done a formal nexus analysis, there is a meaningful chance you have uncollected back-tax exposure. We help you quantify that exposure and resolve it — proactively, before a state audit forces the issue.
Our process
Nexus Review
We analyze your US sales by state and identify where you have economic nexus — or are close to triggering it.
Taxability Analysis
We determine whether your products or services are taxable in each nexus state. Rules vary significantly, especially for digital products and SaaS.
Registration
We register your entity for sales tax permits in all nexus states. For historical exposure, we manage voluntary disclosure agreement (VDA) applications.
Ongoing Compliance
We file your sales tax returns in each state on the assigned schedule — monthly, quarterly, or annually — and manage any correspondence with state agencies.
Frequently asked questions
Nexus is triggered when your sales into a state exceed that state's economic threshold — most commonly $100,000 in annual sales or 200 transactions. We analyze your sales data by state and identify where you have or are approaching nexus. Physical presence (office, employee, warehouse) also creates nexus regardless of sales volume.
It depends on the state. More than 24 states treat SaaS as taxable, including New York, Texas, Pennsylvania, Washington, and others. Some states tax downloaded software differently from cloud-delivered software. California currently does not tax SaaS, but the rules evolve. A product taxability analysis is a core part of our nexus review.
Most states offer Voluntary Disclosure Agreements (VDAs) that allow businesses to come forward proactively. VDAs typically limit the lookback period to 3–4 years (versus the state's standard audit window of 3–7 years) and waive penalty assessments. We manage the VDA application process and negotiate on your behalf to minimize your exposure.
Marketplace facilitator laws in most states require platforms like Amazon and Etsy to collect and remit sales tax on behalf of sellers. These sales may still count toward your economic nexus threshold in some states, but you generally don't have to collect or remit separately for those sales. We clarify exactly how marketplace sales affect your compliance position.
Filing frequency is assigned by each state based on your sales volume. High-volume sellers may file monthly; lower-volume businesses often file quarterly or annually. Some states require prepayment of estimated sales tax. We track your filing calendar and handle submissions on your behalf.
Start with a nexus review
We'll map your exposure across all states and tell you exactly what you owe — and what to do next.
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