Skip to content

U.S. Sales Tax Calculator

The exact sales tax rate for
any US address.

Enter a shipping address

What are you selling?

Your combined rate and full jurisdiction breakdown will appear here.

Trusted by hundreds of global businesses

Storii
Storii
Mpl
Mpl
Cloudsek
Cloudsek
Razorpay
Razorpay
Assembled
Assembled
WilsonLearning
WilsonLearning
GmLighting
GmLighting
Isochem
Isochem
ProlongLash
ProlongLash
Mystifly
Mystifly
Seismic
Seismic
Fairs
Fairs
Remote
Remote
PineLabs
PineLabs
Jhana
Jhana
Avea
Avea
Wetstone
Wetstone
Pharmapac
Pharmapac
Composio
Composio
LoulouLollipop
LoulouLollipop
Passes
Passes
Aestus
Aestus
Frex
Frex
Aspire
Aspire
RifaAi
RifaAi
Skydo
Skydo
Trx
Trx
Npw
Npw
Mojo
Mojo
CleanAir
CleanAir
CoxLondon
CoxLondon
SportsHeads
SportsHeads
Skydesk
Skydesk

Do I even need to collect?

A rate only matters if you have nexus.

Nexus is the connection that obligates you to register, collect, and remit sales tax in a state. It shows up in three ways, and the economic and marketplace kinds catch most online sellers by surprise.

Economic nexus

Triggered by your sales volume alone, no physical presence needed. Since South Dakota v. Wayfair (2018):

$100kin sales, or
200separate transactions

California, New York & Texas use $500k; some have dropped the transaction count.

Physical nexus

A tangible footprint in the state. The quiet ones catch founders out:

  • Employees, contractors, or remote staff
  • Inventory in a warehouse or 3PL (incl. Amazon FBA)
  • An office, store, or leased property
  • Traveling salespeople or trade shows

Marketplace nexus

Facilitator laws shift some burden to the platform, but not all:

  • Platforms collect & remit on orders placed through them
  • Those sales still count toward your nexus thresholds
  • Direct & off-platform sales remain your responsibility
Get a free nexus check

Is my product taxable?

The same product is taxed differently in every state.

What you sell matters as much as where you sell it. Taxability is decided by product code, and the codes don't agree across state lines, so Commenda maintains hundreds of product tax codes (PTCs) and maps your catalog to the right one in every state.

Tangible personal property

The default taxable category. Physical goods are taxable in all 45 states (plus DC) that levy a sales tax. Exemptions exist for things like groceries and prescriptions.

SaaS & software

A patchwork. ~20 states tax SaaS; others exempt it. New York treats prewritten software as tangible property; Texas taxes it as a data-processing service at 80%.

Digital goods

E-books, music, streaming, and downloads are taxable in roughly half of states. The definition of a “digital good” itself varies state to state.

Professional services

Generally exempt in most states, but Hawaii, New Mexico, South Dakota & West Virginia tax services broadly under gross-receipts regimes.

How the rates stay current

Agents that read the regulations
so you don't.

Sales tax content goes stale fast. Commenda's agents watch for rate and rule changes across 13,000+ jurisdictions and apply them automatically.

Monitors every jurisdiction, continuously

AI agents read state DOR bulletins, rate-change notices, and legislative updates across 13,000+ jurisdictions, the moment they publish.

Parses the change into structured rules

Each notice is parsed into a machine-readable rate, effective date, and product-code scope, then checked against your active registrations.

Flags what affects you

If a change touches a state where you collect, you get an alert with the old rate, the new rate, and the date it takes effect.

Updates rates before they go live

Your calculations and filings reflect the new rate automatically on its effective date. No spreadsheet, no scramble.

What if I haven't been collecting?

Past-due sales tax doesn't go away. It compounds.

Cross a threshold and never register, and you may owe back tax, plus penalties and interest, even on sales where you never charged tax. It compounds the longer it sits.

A Voluntary Disclosure Agreement (VDA) usually beats getting found. States typically cap the lookback to 3 to 4 years and waive penalties when you come forward.

Run an exposure analysis

Illustrative exposure over time

  • Year 1: uncollected tax$48k
  • Year 2: with penalties$96k
  • Year 3: with interest$152k
  • With a VDA$61k

Illustrative example: your exposure depends on your sales and the states involved.

What Commenda handles

The calculator is step one. We run the whole lifecycle.

U.S. sales tax is one part of Commenda's Global Indirect Tax product. From the moment you approach a threshold to the day a return is filed, one platform and one team covers it.

Nexus monitoring

We track your thresholds in all 50 states and tell you the day you cross one.

Registration

We register you in every state where you have nexus: EIN, responsible party, the lot.

Rate calculation

Rooftop-accurate rates via API or your ERP, kept current automatically.

Return filing & remittance

We prepare, file, and pay on every deadline, whether monthly, quarterly, or annual.

Exemption certificates

Collect, validate, and store resale and exemption certificates for audit defense.

Back-tax & VDAs

We negotiate voluntary disclosure agreements to cap historical exposure.

Explore Global Indirect Tax

Common questions

Questions sales tax teams ask us.

The rules behind the number: nexus, taxability, rate changes, and back exposure.
Read our FAQ library

The fastest way to find out is to run a nexus study. We connect to your revenue systems (Stripe, Shopify, NetSuite, QuickBooks, ChargeBee, or a CSV) and consolidate transactions by ship-to state. We then run nexus against both economic thresholds (typically $100K in sales OR 200 transactions in most states, with California and New York at $500K) and physical-presence triggers (employees, inventory, 3PLs, offices). You see the state-by-state picture plus an alerting threshold, so new states approaching nexus surface before the next invoice tips you over.

A single remote employee in a state creates physical nexus in almost every state, regardless of role or hours. Inventory stored in a state, including stock held at a third-party fulfilment centre, also creates physical nexus, and is one of the most common quiet triggers for ecommerce sellers. Contractors are state-specific: some states treat them as creating nexus, others don't. We surface the answer per state during onboarding.

Yes, in most states. Economic nexus is typically set at $100K in sales OR 200 transactions over a 12-month window, so a single invoice large enough to cross $100K can create nexus on its own. We've seen six-figure sponsorship and enterprise invoices do exactly that. The fix is to check nexus before issuing large invoices into a new state, not after, which is what real-time nexus alerts on our platform are built for.

No. Foreign qualification is a corporate-registration concept, not a tax-nexus concept, and the two get conflated routinely, including by some AI research tools. Physical nexus comes from real activity (offices, employees, inventory), not from being foreign-qualified to do business in a state. A mail-forwarding-only address doesn't create nexus either. We audit your existing foreign qualifications against actual nexus and unwind the ones you don't need.

No. SaaS taxability varies significantly by state, and within a state by customer type and how the software is delivered. New York treats most SaaS as tangible personal property (taxable). Several other states fully exempt B2B SaaS. A handful sit somewhere in between depending on bundling, delivery mode, or customer use. We maintain a state-by-state SaaS matrix and assign the correct product tax code to each transaction so the treatment is right everywhere automatically.

Yes, and it's surprisingly common. A product tax code meant for physical goods applied to custom B2B software or services can cause you to collect and remit tax that wasn't actually owed, accumulating false liabilities over years. We audit your current product catalog, re-map mis-coded items, and identify what's recoverable from prior periods through state refund or credit claims where the lookback window allows.

Avalara is software focused on sales tax calculation and filing. You operate the platform, configure the product codes, and handle most of the implementation. Commenda is a managed service across the full compliance lifecycle (sales tax plus entity management, corporate tax, and transfer pricing) with an in-house team, including former Avalara staff and ex-state auditors, doing the work. The patterns customers cite when they switch: misconfigured product codes that quietly accumulated false liabilities, multi-storefront integrations that didn't fit, slow international expansion, and the missing surrounding layers (registration, exemption certificates, audit defense) that aren't really Avalara's business. See the full Avalara comparison →

Vertex is a tax engine built for Fortune-500-scale enterprises. Powerful, but it assumes you have an in-house tax-tech team to integrate, configure, and operate it. Commenda is a managed service for growing global companies that need the same outcome without that function: nexus monitoring, registration, filing, remittance, exemption certificates, and audit defense, handled by an in-house team. The wedge is total cost of ownership and right-sizing, built for companies scaling through multi-state and cross-border complexity, not for those already running it at F500 scale. See the full Vertex comparison →

Free nexus exposure check

Find out exactly where you owe sales tax.

It starts with one free check. We map your sales, your real nexus, and every registration you're carrying today.

  • We read your Stripe, Shopify & QuickBooks data.
  • Get a state-by-state map of where you're exposed.
  • A tax expert walks you through it, no obligation.

Tell us about your business

No obligation. A Commenda sales tax expert will reach out within 24 hours.

You can also mail us at sales@commenda.io