Sales Tax on Invoices (US): How to Charge and Show It in 2026

Quick answer: Sales tax on invoices in the US is charged by the seller at the combined state and local rate that applies to the sale, but only in states where you have nexus and only on items or services that state taxes. Show the taxable subtotal, the tax rate and the sales tax amount as separate lines, then add them to reach the total due. There is no federal sales tax, so the rules depend on each state you sell into.

This guide explains when you need to charge sales tax, how to calculate it line by line, how to handle exempt customers, and what a clean sales tax section looks like on a US invoice. You can apply everything here in our free invoice generator, which lets you set a tax rate and shows the tax as its own line.

Important: This article is general information, not tax advice. Sales tax rates, thresholds and taxability rules are set by each state and many local jurisdictions, and they change regularly. Confirm your obligations with your state department of revenue or a qualified tax professional before relying on any format or rate.

How sales tax works in the US

US sales tax is a consumption tax imposed at the state and local level. Most states levy a statewide rate, and many allow counties, cities and special districts to add their own rates on top. Five states have no statewide sales tax: Alaska, Delaware, Montana, New Hampshire and Oregon. Even so, some Alaska localities levy their own local sales taxes, so "no state tax" does not always mean "no tax".

The seller collects sales tax from the buyer at the point of sale and later remits it to the state on a sales tax return. That makes you a collection agent: the money on the tax line of your invoice is not your revenue. Keep it out of your operating budget so you have it ready when the return is due.

Sales tax is different from VAT or GST. There is no input-tax credit chain for ordinary buyers, and business buyers typically avoid tax on goods they resell by giving you a resale certificate rather than reclaiming tax afterwards. If you also bill overseas customers, our tax invoice guide covers how VAT-style tax invoices differ.

When you must charge sales tax on an invoice

Three questions decide whether a sales tax line belongs on an invoice:

1. Do you have nexus in the state? Nexus is the connection that obliges you to collect a state's tax. Physical presence (an office, employees, inventory) creates nexus. Since the 2018 South Dakota v. Wayfair Supreme Court decision, states can also impose economic nexus once your sales into the state pass a threshold. Many states use $100,000 in annual sales, and some also use or used a transaction count, but thresholds differ and some have been revised, so check each state's current rule.
2. Are you registered? Once you have nexus, you generally need a sales tax permit before you collect tax. Do not add sales tax to invoices if you are not registered in that state.
3. Is the item taxable? Most states tax sales of tangible personal property by default. Services, digital products, software and certain essentials such as groceries or clothing are treated very differently from state to state.

If you sell through an online marketplace, the marketplace may be responsible for collecting the tax under marketplace facilitator laws, which most states with a sales tax have adopted. Your own direct invoices, however, are still your responsibility.

Origin-based vs destination-based sourcing

Sourcing decides which location's rate applies. Most states use destination-based sourcing, meaning you charge the rate where the buyer receives the goods. A smaller number of states use origin-based sourcing for in-state sales, meaning you charge the rate at your business location. Remote sales into a state are usually sourced to the destination.

Scenario	Rate usually applied	What to show on the invoice
In-state sale, destination-based state	Combined rate at the delivery address	Ship-to address and that combined rate
In-state sale, origin-based state	Combined rate at your location	Your location's rate
Sale into another state where you have nexus	Destination rate for that state	Ship-to address, destination rate
Sale into a state where you have no nexus	None collected by you	No sales tax line; buyer may owe use tax
Buyer provides a valid exemption or resale certificate	None on qualifying items	"Exempt" note and certificate reference

Because local rates can vary by street address, many businesses look up rates by address rather than by ZIP code alone. Our sales tax calculator helps you check the arithmetic once you know the rate.

How to show sales tax on an invoice

A clear sales tax section makes the invoice easy to approve and easy to report. Include:

• Each line item with a description, quantity, unit price and line total, marked as taxable or non-taxable where the treatment differs.
• A subtotal, then a separate taxable amount if some lines are not taxed.
• The sales tax rate, and the jurisdiction if you sell into more than one location (for example "Sales tax 8.25%").
• The sales tax amount as its own line, never folded into unit prices.
• The total due, including tax.
• Your sales tax permit number if your state expects it or your buyers ask for it.

Breaking lines out this way is the same discipline behind a good itemized invoice. It also protects you if a buyer later disputes the amount: you can point to exactly which lines were taxed and at what rate.

Worked example: mixed taxable and non-taxable lines

Here is a hypothetical invoice from a business selling and installing shelving in a state where the goods are taxable, separately stated installation labor is not taxable, and separately stated delivery is not taxable. The combined rate is 8.25%. These treatments are illustrative only; your state may treat labor or delivery differently.

Description	Qty	Rate	Amount	Taxable?
Steel shelving unit, 72 in.	4	$250.00	$1,000.00	Yes
Installation labor (hours)	4	$75.00	$300.00	No
Delivery	1	$40.00	$40.00	No

• Subtotal: $1,340.00
• Taxable amount: $1,000.00
• Sales tax (8.25% of $1,000.00): $82.50
• Total due: $1,422.50

Notice that tax is applied only to the taxable amount, not the full subtotal. Charging 8.25% on all $1,340.00 would have produced $110.55 of tax, overcharging the customer by $28.05. Applying tax to the wrong base is one of the most common invoice mistakes on US invoices.

Discounts and sales tax

In many states, a seller's discount taken at the time of sale reduces the taxable amount, so you calculate tax after the discount. Manufacturer coupons and rebates can be treated differently. Apply discounts before tax unless your state's guidance says otherwise, and show the discount as its own line so the taxable base is visible.

Exempt customers and resale certificates

Some buyers do not pay sales tax on certain purchases: resellers buying inventory, qualifying nonprofits, government agencies, and buyers of items that are exempt for a specific use (such as some manufacturing inputs). To skip tax, you generally need a properly completed exemption or resale certificate on file before or at the time of sale.

1. Request the certificate when you set up the customer, not when the first invoice is due.
2. Check that it is complete, signed and valid for your state and the type of purchase.
3. Store a copy with the customer record and note the certificate reference on the invoice.
4. Diary any expiry date and request a renewal in good time.

Many states accept multistate forms, but not every state accepts every form. If a certificate turns out to be invalid, the state may hold you responsible for the uncollected tax, so treat certificates as records you must keep. Our guide to how long to keep invoices covers retention periods for these documents too.

Sales to buyers outside the US, and some international shipments, can also fall outside state sales tax. If you bill foreign customers, read our guide on invoicing international clients.

Correcting sales tax on an invoice you already sent

If you charged the wrong rate or taxed an exempt item, do not quietly edit and resend the same invoice number. Issue a credit memo that references the original invoice and reverses the incorrect tax, then issue a corrected invoice if needed. Our credit note guide explains the process. If you collected too much tax from a customer, states often expect it to be refunded to the customer or remitted to the state, so ask your tax adviser how to handle it on your return.

Keep your business identifiers consistent on every corrected document. Our guide to the tax ID on an invoice explains which numbers US invoices typically show, and when a client asks for your taxpayer details for year-end reporting, see W-9 vs 1099 for contractors.

Sales tax on invoices: a final checklist

• You have nexus and a sales tax permit in the state whose tax you are charging.
• Each line's taxability has been checked for that state.
• The rate matches the correct sourcing location (origin or destination).
• Tax is calculated on the taxable amount after allowed discounts.
• Sales tax is shown as a separate line with the rate.
• Exempt sales reference a certificate you hold on file.
• The ship-to address is on the invoice when it differs from the billing address.

If a customer gives you a tax-inclusive total, our guide to reverse sales tax calculation shows how to split out the tax.

Create your US sales tax invoice now

Open the USA invoice generator, which defaults to USD and US-style tax fields, add your line items, set your sales tax rate and download a clean PDF. A structured layout such as the Classic invoice template keeps taxable lines, the tax rate and the total easy to read, and you can browse every option in our invoice templates gallery. Remember to confirm current rates and rules with your state before you send.