US sales tax confuses freelancers because there's no single national answer: it's set state by state (and often city by city), and whether your work is taxable depends on what you sell and where your customer is. The good news for most freelancers: many pure services aren't subject to sales tax in many states, so a lot of freelance invoices legitimately carry no tax line at all. Here's how to think about it structurally, and how to show sales tax cleanly when you do need to charge it.
Services vs goods: the big dividing line
Sales tax started as a tax on tangible goods, and that legacy still shapes the rules. Broadly:
- Tangible goods — physical products, printed materials, hardware — are commonly taxable almost everywhere that has a sales tax.
- Pure services — writing, consulting, design labor, coaching — are often not taxable, though a number of states do tax specific service categories.
- The gray zone — digital products, software, SaaS, and deliverables that mix service and product (you design a logo and ship printed brochures) — is where treatment varies most from state to state.
The practical takeaway: don't assume your work is taxable or exempt based on what another freelancer does. The answer depends on your state's rules for your specific category of work — most state tax authorities publish them directly (for example, the Texas Comptroller's sales and use tax pages).
Nexus, in one paragraph
You generally only collect a state's sales tax if you have nexus there — a connection significant enough that the state can require you to register and collect. Physical presence (you live or work there, keep an office, or have employees there) creates nexus in the obvious way; since the South Dakota v. Wayfair decision, states can also impose economic nexus once your sales into that state pass a volume threshold, even with no physical presence. Most freelancers have nexus only in their home state, which keeps things manageable — but if you sell taxable goods or digital products at volume across many states, nexus is the concept to discuss with an accountant.
How to show sales tax on an invoice
When you do charge it, the structure is simple and consistent:
- Subtotal — the sum of your line items, before tax.
- Sales tax line — labeled "Sales Tax" with the rate shown, e.g.
Sales Tax (8.25%). Use the combined state + local rate that applies; you don't need to split state and county components on the invoice itself, though your records should support the number. - Total — subtotal plus tax.
If an invoice mixes taxable and non-taxable lines (a taxable printed deliverable plus non-taxable design labor), the cleanest approach is to note which lines the tax applies to, or split the work across two invoices.
Example: freelance invoice with taxable goods and a sales tax line
A Texas-based designer billing locally for a design project plus printed deliverables, with sales tax shown as a labeled rate on the invoice.
When freelancers commonly don't charge sales tax
Plenty of freelance invoices carry no tax line, and that's often correct. Common situations:
- Your service category isn't taxable in your state — frequently the case for pure professional services.
- The client is out of state and you have no nexus there — you generally can't be required to collect a state's tax without nexus in it.
- The sale is a business-to-business resale or otherwise exempt, with the client providing an exemption or resale certificate you keep on file.
- You're below any registration requirement that applies to your situation.
Two cautions. First, "I don't charge sales tax" is only safe when you've confirmed your work isn't taxable — not charging tax you owe leaves you holding the liability, since the state collects from the seller. Second, don't add a sales tax line "just in case": collecting tax you're not registered to remit creates its own problem. When no tax applies, simply show no tax line; if a client asks, a one-line note like "No sales tax — professional services" in the notes field answers the question before it's asked.
Keep the invoice boring and the records solid
Sales tax disputes are record-keeping disputes. Number invoices sequentially, keep exemption certificates, and make the tax line self-explanatory: label, rate, amount. InvoiceKo's free invoice generator for freelancers lets you set "Sales Tax" as the label at any rate — or no tax at all — with notes and terms fields for the explanatory line, and a clean PDF with no signup or watermark. For the general pattern across tax systems, see how to show tax on an invoice.
Tax rules vary and change — confirm the specifics with your accountant or local tax authority.