Seller Invoice Template for Wholesale and Online Sales

A seller invoice is the document a business uses to request payment for goods it has sold. For a wholesale order, online sale, or direct business customer, it gives the buyer a clear record of what they ordered, what it costs, what has already been paid, and how to settle the balance. A clean invoice also gives the seller a useful reference when questions arise about an order, shipment, return, or payment.

An invoice is not the same as an order confirmation, packing slip, receipt, shipping label, or refund notice. Those documents may all relate to one sale, but each serves a different purpose. Keeping the distinctions clear is especially helpful when a business sells through more than one channel.

What is a seller invoice?

A seller invoice is a bill issued by the party selling products or goods. It identifies the seller and buyer, lists the goods sold, shows quantities and prices, and states the total amount due. It may be sent before payment, alongside delivery, or at the end of a billing period depending on the terms agreed with the customer.

For consumer purchases, an online store may collect payment at checkout and send a receipt instead of a traditional invoice. For wholesale or business-to-business orders, an invoice is often part of the buyer’s approval and accounts-payable process. Use the document that fits the actual transaction and your customer’s expectations.

What to include in a seller invoice

• Your business name, contact details, and any identifiers required for your location.
• The buyer’s legal or billing name and contact details.
• A unique invoice number, issue date, and clear payment due date.
• The order number, purchase order number, or sales reference.
• Each product name or SKU reference, quantity, unit price, and line total.
• Discounts, shipping, handling, taxes, or fees that apply to the sale.
• The total, any deposit or payment already received, and the balance due.
• Payment instructions and a contact for invoice questions.

A product description should be recognizable without exposing more detail than necessary. “Natural cotton tote, sand, SKU CT-140, quantity 24” is useful to a wholesale buyer. “Bag” is not. If your order system already assigns an order number, include it so the buyer can match the invoice with the right purchase and delivery.

Seller invoice example

Imagine a small home-goods seller receives a wholesale order for 36 ceramic mugs and 24 serving trays. The invoice could list each product, quantity, unit price, the agreed delivery charge, any approved discount, and the payment due date. If the buyer paid a deposit, that amount should appear as a credit, with the remaining balance shown prominently.

The invoice should match the accepted order. If a product was substituted, damaged, backordered, or removed before delivery, make sure the document reflects the agreed final quantity. Do not expect a customer to infer a change from the total alone.

Invoice, packing slip, and receipt

Document	Primary purpose
Seller invoice	Requests payment and explains the charges for the sale.
Order confirmation	Confirms that an order was placed or accepted.
Packing slip	Lists what is included in a shipment or delivery.
Receipt	Confirms that payment was received.

These documents can reference the same order number, but they should not contradict each other. A buyer who receives 20 units should not receive an invoice for 24 unless there is a clearly explained reason and an agreement to bill the difference.

How to create a seller invoice

1. Check the accepted order, quote, or purchase order.
2. Confirm the buyer’s billing details and their required reference number.
3. List the products with accurate quantities and prices.
4. Add only the shipping, discount, tax, or fee amounts that apply to the agreed sale.
5. Show deposits, partial payments, or credits separately.
6. Set the due date and add the payment method the buyer should use.
7. Review the invoice against the final delivery or fulfillment record before sending.

You can generate a seller invoice in ToolNimbly by entering the business and buyer details, product line items, payment terms, and any credit already received. The tool lets you preview, print, and download a PDF. It does not sync an online store, manage product inventory, create shipping labels, calculate sales tax obligations, process payments, issue refunds, or automatically track order status. Use the records from your store, warehouse, payment provider, or accounting system to complete those jobs.

Wholesale considerations

Wholesale buyers commonly need a purchase order reference, a delivery location, a tax or resale detail where applicable, and terms that their accounts-payable team can follow. Ask the buyer for their required fields before you send the invoice. A precise order reference and a named billing contact can save time when a large organization processes invoices through several people.

If you offer volume discounts or charge a delivery fee, show them as their own lines. This is easier to review than embedding them in product prices. If payment terms were agreed in writing, mirror the due date and payment method accurately. Do not add new late fees or extra shipping charges after the sale unless the customer has agreed to the change.

Online sales considerations

For online orders paid at checkout, a receipt or paid order confirmation may be more appropriate than an invoice requesting payment. If you need to bill a business customer after fulfillment, make sure the invoice references the order and shows the correct status. Never mark an order paid merely because an invoice was generated. Verify payment through the system that actually receives it.

Shipping, returns, and consumer disclosure rules can vary by location and sales channel. Keep your invoice focused on the payment request and maintain the policy, fulfillment, and customer-service records that support the order separately.

Taxes and records

Tax treatment may depend on your location, the product sold, the buyer, and where the sale occurs. A template cannot decide whether you must charge sales tax, VAT, GST, or another tax. Check with a qualified local tax professional or official authority before you set up your invoicing practice.

Keep the invoice with the order, payment evidence, delivery or shipping record, and any credit or return record. The IRS explains that business records should clearly show income and expenses and identifies invoices among the supporting documents businesses may need to keep. Read the IRS business recordkeeping guide for general U.S. information.

Common seller invoice mistakes

• Missing the order reference: Buyers cannot easily match the bill to their order.
• Using a generic product description: Accurate line items reduce approval questions.
• Forgetting quantity changes: Match the invoice to the final agreed order.
• Hiding fees in the unit price: Separate shipping or handling when that makes the charge clearer.
• Ignoring deposits or credits: Show prior payments to avoid an apparent double charge.
• Confusing an invoice with a receipt: Mark a sale paid only after payment is confirmed.

Quick review checklist

• Does the invoice name the correct buyer and billing contact?
• Does every line match the accepted product, quantity, and price?
• Are order and purchase order references correct?
• Are all agreed discounts, delivery charges, and credits visible?
• Is the balance due easy to spot?
• Have you saved the invoice with the order and payment records?

Frequently asked questions

Should a seller invoice include a shipping address?

Include it when it helps identify the order or when the buyer needs it. The billing and shipping address can be different, so label each clearly.

Can I invoice a customer after an online order has shipped?

Yes, if that matches the agreed payment terms. Reference the order and confirm the final goods and amounts before sending the invoice.

How do I show a partial payment?

List it as a payment or credit against the total, then show the remaining balance. Retain the related payment confirmation with the invoice.

A seller invoice should make the transaction feel settled even before it is paid: the buyer can see the exact order, the seller can trace the sale, and both sides know the next step.