Packing Slips vs Invoices: What to Send

You finish a job at 4pm, the customer asks for “something showing what you did,” and now you’re wondering: is that a packing slip, an invoice, or both? If you ship a product, the same question shows up the moment you tape the box shut. A packing slip and an invoice look similar, but they do two different jobs — and knowing which to send (or whether you need both) saves you arguments later and makes you look like a one-man business that has its act together.

This guide breaks down the packing slip vs invoice difference in plain terms, shows you what goes on each, and tells you honestly when a solo operator can skip the packing slip entirely.

The difference between a packing slip and an invoice (30-second version)

Short answer: a packing slip lists what’s inside the delivery or what you did on the job. An invoice lists what’s owed. The packing slip travels with the goods and shows no prices. The invoice asks for payment and shows every number.

When do you send both? When the person receiving the delivery isn’t the person paying — think a warehouse receiving team versus the accounts department. When do you send just the invoice? When you’re a solo operator dealing face-to-face with one customer who already sees everything on the bill.

What is a packing slip?

A packing slip is the document that travels with a delivery and lists its contents — no pricing attached. It answers one question for whoever opens the box or signs off on the job: did everything that was supposed to arrive actually arrive?

For non-warehouse readers, here’s the simplified version of what it includes:

• Who sent it (your business name and contact)
• Who’s receiving it (customer name and delivery address)
• An order or job reference number
• The date
• A line-item list: what was delivered, and how many of each

Two quick examples:

• E-commerce order: You ship three items in one box. The packing slip lists all three with quantities, so the customer can check nothing’s missing before they reach for a refund request.
• Contractor job: You replace a water heater and install two shutoff valves. The slip you leave behind lists the heater, the valves, and the work completed — a record the customer keeps without any dollar figures on it.

What a packing slip does NOT include

A packing slip leaves out everything financial. No prices, no payment terms, no tax, no balance due. That’s the invoice’s job. Packing slips intentionally omit pricing so the physical-shipment details stay separate from the money details — handy when the item’s a gift, or when a third party is fulfilling the order and shouldn’t see what the customer paid.

Do you actually need a packing slip? (The honest answer)

Here’s the honest answer: no, you don’t always need one. A packing slip is not a legal requirement for domestic shipping in the US, UK, Canada, or Australia. Plenty of small operations run fine without one. So before you add another form to your day, check whether it actually earns its place.

Send a packing slip when:

• You’re shipping multiple items, especially across more than one box
• Your customer is a business with a receiving team that checks deliveries in
• The goods could be disputed later (“I never got the second one”)
• You’re shipping internationally (customs may use it to estimate value)

You can probably skip it when:

• You’re doing a local service job and handing over a single invoice that already confirms everything
• It’s a face-to-face delivery where the customer watches you hand over the goods
• One document already does the job — no sense making two

Not every business needs one. If your invoice already lists each line item clearly and you’re standing in front of the customer, a separate packing slip is often just extra paper.

Packing slip for field service: what to leave with the customer

If you don’t ship products, you might think this doesn’t apply to you. It does — just translated. For a field service business, the packing slip is the document you leave behind that records what you did, what parts you used, and what comes next. Call it a service summary, a work-completed sheet, or a packing slip for contractors — same idea.

You’re wrapping up an HVAC repair at 4pm. The customer wants a record of the visit before you drive away. Here’s what to put on it:

• Job completed: “Replaced blower motor, cleared condensate drain”
• Parts installed: the motor, with quantity
• Quantities: how many of each part
• Next steps: “Recommend filter change in 90 days”
• Warranty info: part warranty length, your labor guarantee

What to leave off: the pricing. The dollars go on the invoice. The packing slip is the proof-of-work record; the invoice is the bill. Keeping them separate means a customer can hand the work summary to their landlord or home warranty company without flashing what they paid.

This is exactly the kind of thing you don’t want to handwrite on a notepad. With a mobile-first tool like Pronto, you can put together the line items and hand over a clean record from your phone before you leave the driveway — no laptop, no office trip.

Packing slip for product shipments

If you do ship goods, the packing slip earns its keep when one order turns into multiple boxes. Box 2 of 3 with a slip inside tells the receiver exactly what should be in that box and what’s still coming.

A B2B customer’s receiving team typically wants:

• SKU or UPC for each item, so they can scan it in
• Quantity shipped (and a note on anything back-ordered)
• PO reference so it matches their purchase order

That PO match matters more than it looks. On the buyer’s side, your packing slip often becomes the basis for their goods received note (GRN) — the internal document their team creates to confirm what actually showed up. More on that below.

What goes on a packing slip — the fields you need

You don’t need an enterprise warehouse system to make a good packing slip. Here’s what goes on a packing slip, sorted by how much you actually need it:

Essential (always include):

• Order or job number
• Date
• Sender details (your business)
• Recipient details (customer + delivery address)
• Line items with quantities

Optional (depends on your business):

• Weight and dimensions
• Tracking number
• Special handling notes
• Back-order notes (what’s coming separately)
• Return instructions

Skip it — that’s the invoice’s job:

• Prices
• Payment terms
• Tax

For field service specifically

If you’re leaving one at a job site, swap the shipping fields for service fields:

• Job description (what you did)
• Parts list with quantities
• Completion date
• Technician name

Packing slip vs related documents (quick reference)

A few documents get mixed up with the packing slip. Here’s how to keep them straight.

Packing slip vs delivery note

A packing slip lists what’s inside the shipment. A delivery note is closer to a confirmation that the delivery happened — the customer often signs it to acknowledge receipt. Some businesses combine the two into one form. (For a fuller breakdown, see our delivery note vs invoice guide.)

Packing slip vs shipping label

Easy one: the shipping label goes on the outside of the box and gets it to the right address. The packing slip goes inside the box and tells the recipient what’s in it.

Packing slip vs goods received note

The seller creates the packing slip. The buyer creates the goods received note. When goods arrive, the buyer’s team checks them against the packing slip and logs a GRN. That GRN then feeds three-way matching in their accounting: purchase order + goods received note + your supplier invoice all have to agree before they authorize payment. If you sell to bigger companies, your clean packing slip makes their GRN — and your payment — go faster.

Free packing slip template (simple one-page)

You don’t need software to start. Here’s a simple one-page layout you can copy.

Contractor / field service version:

[Your Business Name] — [Phone / Email]
Customer: [Name]          Job Address: [Address]
Job #: [____]             Date: [____]
-------------------------------------------
Work completed:
- [Task]
Parts installed:
- [Part]  Qty: [__]
Next steps / warranty:
- [Notes]
Technician: [Name]

E-commerce version:

[Your Business Name]
Ship to: [Name / Address]    Order #: [____]   Date: [____]
-------------------------------------------
Item            SKU         Qty
[Item]          [____]      [__]
Back-ordered: [item / none]
Return instructions: [____]

When you’re past the copy-paste stage and want it generated from your phone — already filled with your business details and line items — Pronto Invoice builds the record alongside the invoice, so one job means one quick flow, not two forms. You can mark the invoice as paid when the money lands and keep both on file.

FAQ

Is a packing slip legally required? No. Packing slips are not a legal requirement for domestic shipping in the US, UK, Canada, or Australia. They’re a practical tool for confirming deliveries and heading off disputes, not a tax document. Your invoice is the one to keep for records.

Can I combine a packing slip and invoice on one page? Yes, and many small operators do — one document that lists the items and shows the total. The trade-off: the recipient sees the prices, which you may not want for gifts or third-party deliveries. In Pronto, your invoice can carry line items as detailed as a packing slip, so a single document covers both when that’s all you need.

What if I forget to include one? For a domestic, single-invoice job, usually nothing happens — the invoice already confirms the details. For a multi-box or B2B shipment, a missing slip can slow the receiver’s check-in and your payment. If you forgot, email a copy with the line items.

International shipments — what else do I need? Cross-border shipments often need a commercial invoice, and customs may use your packing slip to estimate the shipment’s value. See our commercial invoice requirements guide for the full list.

Goods received note vs packing slip — what’s the difference? The seller creates the packing slip and sends it with the goods. The buyer creates the goods received note after the goods arrive, confirming what they actually got. One travels out with the shipment; the other is logged on arrival.

A packing slip vs invoice isn’t an either/or for most field service jobs — often the invoice alone does the work, and that’s fine. Send the packing slip when a second set of hands receives the goods, when items could go missing, or when you’re crossing a border. Keep the prices on the invoice, keep the contents on the slip, and you’ll spend less time arguing about what showed up.

For more on the documents that ride along with a sale, see our guides on what a PO number is and FOB shipping terms.