The short version
Check two things: the state, and the invoice. In states like Washington, Texas, and New York, the delivery charge is part of the selling price and gets taxed no matter what. In states like California, Colorado, and Florida, a delivery charge printed on its own invoice line escapes the tax. Find your state's rule, look at how the invoice shows the shipping line, then: tax = taxable base × rate. Run both versions in seconds with the sales tax on shipping calculator.
Why states disagree
Every state writes its own definition of "selling price." About half the states define it to include delivery charges — the reasoning being that you paid the shipping to get the item, so it's part of what the item cost you. Washington is explicit: delivery is part of the selling price whether it's billed separately, itemized, or the seller is also the carrier.
The other group of states offers an exclusion, usually for delivery by a common carrier that is separately stated on the invoice. California is the textbook example: separately stated shipping by an independent carrier, charged at or below the actual cost, is excluded — while any "handling" portion stays taxable. Colorado's rule is similar but adds a separability test: the buyer must have had a real choice, like picking the item up instead.
Practical upshot: the same $12 shipping line is taxable in Seattle and tax-free in Los Angeles. Nobody made an error — the definitions differ.
The line that changes everything
"Separately stated" just means the delivery charge appears as its own line on the invoice, distinct from the item prices. That single line is the trigger for the exemption states — and it explains two common receipt puzzles:
- Bundled shipping is taxed everywhere.
When the seller folds delivery into the item price, or writes one combined "shipping & handling" line, there is nothing separate to exempt — even in California-style states. The whole amount is part of the sale price. - "Handling" is not "shipping."
Several states tax the handling portion regardless. So a $9.99 "shipping & handling" line can be fully taxable while a $5.99 standalone "shipping" line on another invoice is not — same order value, different invoice anatomy.
Mixed carts: splitting the shipping
What about an order with both taxable and nontaxable goods? States that tax shipping require the charge to be prorated: only the slice of shipping tied to taxable items gets taxed. Washington lets sellers compute the slice by price share (taxable goods' price ÷ total price) or by weight share.
Example: a $120 cart with $72 of taxable goods and $48 of exempt groceries, plus $12 shipping. The taxable slice is 72 ÷ 120 = 60%, so $7.20 of the shipping enters the base: tax = (120 + 7.20) × 8% = $10.18. The proration is the most commonly miscalculated part of these receipts — most sellers and most receipt-checkers forget it exists.
Groceries and other exempt orders
The delivery charge follows the items it carries. Where unprepared food is exempt, delivery on an all-exempt grocery order is exempt too — there is no taxable sale for the fee to attach to. This also covers wholesale or resale orders: Washington exempts delivery on wholesale sales outright. And a practical trap: "free shipping" lines add $0 to the tax, but when a seller bakes "free" shipping into higher item prices, that embedded cost is taxed as part of the price. The tax doesn't vanish — it just moves lines.
Which state's rules apply
Most states use destination sourcing: the sale is taxed where the buyer takes possession — the ship-to address, not the seller's warehouse. So an order shipped from a no-delivery-tax state to a taxable-delivery state follows the destination's rule, and the combined state-plus-local rate is the destination's too. A few states (Texas, Illinois, Virginia and others) source in-state sales to the seller's location instead, which is why the same order can be taxed differently at the two ends of the trip. When the billing and shipping addresses differ, the shipping address wins.
Worked example: $120 order, $12 shipping, 8% rate
WA-style (always taxed): (120 + 12) × 0.08 = $10.56 tax → $142.56 total.
CA-style (separately stated): 120 × 0.08 = $9.60 tax → $141.60 total.
Mixed cart, 60% taxable: (120 + 12 × 0.60) × 0.08 = $10.18 tax → $142.18 total.
Frequently asked questions
Is sales tax calculated on the shipping charge?
Depends on the state. In Washington, Texas, New York, and similar states, delivery is part of the selling price and taxed regardless of invoice layout. In California, Colorado, Florida, and similar states, separately stated delivery skips the tax. Check the invoice first — then run both versions in the calculator.
What if the seller didn't charge tax on shipping — do I owe anything?
Collecting the correct tax is the seller's responsibility; states that require the tax hold the seller liable even when it wasn't collected. If you buy for business use in a state that taxes delivery, the use-tax line on the return is the backstop.
Is delivery taxed on grocery or wholesale orders?
Generally no: the delivery charge follows the items. An all-exempt food order means an exempt delivery fee, and wholesale deliveries are typically exempt where wholesale sales are. Mixed baskets get the proration treatment.
Does the billing or the shipping address decide the tax?
The shipping address — most states use destination sourcing, so the rate and the shipping rule come from where the buyer receives the goods. The billing address only matters for payment, not for tax.
Are digital downloads and services treated the same?
No — these rules are about physical goods. Digital goods and services follow their own state-by-state patchwork: some states tax them like goods, some don't tax them at all, so check your state's revenue guidance rather than extending the shipping math.
Educational content, not tax advice. State rules change and local jurisdictions add their own layers (Colorado's home-rule cities set separate shipping rules, for example). When real money is at stake, confirm the current rule with your state's department of revenue.