Delivery note, quotation and invoice: differences and when to use each document

Delivery note, quotation and invoice: differences and when to use each document

Almost every business that sells products handles three similar-looking papers every week: the price list given to an interested customer, the document that travels with the goods when they leave the shop, and the receipt that formalizes the sale. The problem is that in practice these three documents get mixed up: people call an invoice what is really a delivery note, treat a quotation as if it were already a sale, and ship merchandise with a piece of paper that leaves no clear record. Mixing them up is not an office detail. It is the direct cause of unbalanced inventory, sales that are never collected, stock that leaves without an explanation and customers who receive documents they do not understand. This article explains, in practical terms and without jargon, what each document is, what it really commits you to, and at what exact point of the sales cycle it should be used.

Why these documents are so easy to confuse

The confusion has a solid reason behind it: all three documents name products, quantities and prices. A quotation, a delivery note and an invoice can show what looks like the same information, and to an untrained eye they seem interchangeable. On top of that, vocabulary changes from country to country: what is called a delivery note in one place is known as a dispatch note, a delivery docket, a packing slip or a goods received note somewhere else, and each name carries different assumptions about what the paper means.

But the difference is not in the format of the paper; it is in what each document does inside your operation. A quotation is an offer to sell under stated conditions. A delivery note is proof that the goods left your custody. An invoice is the document that turns that shipment into a formal sale that obliges payment. Understanding that logic lets you answer, in any situation, which of the three documents you need and what effect it will have on your inventory and your receivables.

What a quotation is

A quotation is a formal offer to sell. In it you describe the products or services you offer, the quantities, the unit prices, the total value, the payment terms, the delivery time and how long the offer stays valid. Its job is to inform and convince: the customer receives it, compares it with other offers and decides whether to buy. Until that decision is made, the quotation creates no obligation for either party, except that you, as the seller, commit to honoring the price for the validity period you declared.

The key point is what a quotation does NOT do. It does not set goods aside, does not reserve stock, does not create a sale, does not record income and does not touch inventory. You can quote the same product to ten different customers on the same day without any problem, because none of those quotations commits your physical stock. When the customer accepts the offer and confirms, the quotation stops being a loose document and becomes the origin of a sale: an order is created, and only then do quantities, prices and commitments start to move.

Good quotation management includes numbering them, filing them and following them up. A quotation without a number or a date is hard to trace when the customer calls three weeks later asking about the price you offered. And a quotation that never becomes a sale is not a mistake; it is the majority of them, most of the time. That is why you should know how many of the ones you issue end up as orders: that figure tells you whether your prices are set correctly.

What a delivery note is

A delivery note is the document that accompanies the goods when they leave your business. It is used for home delivery, for dispatching an order, for transfers between your warehouse and your store, for a customer return, or for any situation in which products physically move from one place to another. In several Latin American countries the delivery note has a very concrete role: it accompanies merchandise in transit, so that whoever transports it and whoever receives it know exactly what is inside the vehicle or the box. That use is common and legitimate, and it does not turn the delivery note into an invoice.

The delivery note states what is being carried, who it is addressed to, where it leaves from, where it is going and for what reason it was dispatched: a sale pending invoicing, an internal transfer, an exchange, a return. It is above all proof of movement. When goods leave your custody, someone must be able to show that they left with authorization and with a known destination; that proof is the delivery note.

Here is the most costly confusion in commerce: the delivery note is NOT a final sale and NOT proof of payment. It may accompany a sale that has not been invoiced yet, but the fact that the goods have left does not mean, by itself, that the sale is registered. The sale is confirmed when the invoice is issued, or when the customer receives the goods and signs for them and the invoice follows. In the meantime, the stock has left your physical control but the income is not yet earned: it is merchandise on its way, delivered or pending invoicing, depending on the case. In a well-run system, the delivery note takes the goods out of available inventory in a controlled way, records them as shipped or dispatched, and does not turn them into a final cost of sale until the invoice formalizes the transaction.

What an invoice is

The invoice is the commercial document that formalizes the sale. With it you declare, to your customer and to the authorities of your country, that you sold certain products for a certain amount. The invoice obliges payment: it is the backing that lets you collect, demand the balance and prove the transaction existed. Depending on the country, invoices must meet fiscal requirements, official numbering, authorized ways of being issued and deadlines for delivery to the buyer; those rules vary and are worth reviewing with your advisor, but the principle is universal: the invoice is the moment when a shipment of goods becomes a formal, registered sale.

The invoice is also the document that, in an integrated inventory system, deducts stock permanently. When you invoice a sale, the product leaves the available inventory, its cost is calculated and the movement is recorded in your stock ledger. It is the accounting close of the cycle: the quotation moved nothing, the delivery note moved the goods physically, and the invoice turns that movement into an economic result you can collect and pay taxes on.

When is the invoice issued? When the sale is formalized. If the customer buys and takes the product immediately, you invoice on the spot. If the customer buys, pays and asks for delivery, you invoice when the sale is confirmed and issue the delivery note when the product goes out for delivery. If you deliver first and invoice later, you leave a record with the delivery note and invoice when the customer receives the goods or when your commercial policy establishes it. What matters is that every piece of goods that leaves has its movement document, and every sale that is collected has its invoice.

Quick comparison of the three documents

The typical flow: from quotation to invoice

The organized sales cycle looks like this: first you quote, the customer accepts and an order or sale is created, then you dispatch with its delivery note if there is a delivery or a transfer, and finally you invoice to formalize and collect. Not every sale goes through all four stages. In a counter sale, the customer sees the product, pays and takes it: there is no quotation and no delivery note, and the invoice is issued on the spot. In a credit sale with scheduled delivery, on the other hand, the full flow is the norm. Knowing when to skip stages is as important as knowing when to complete them.

One case that raises questions is the customer who pays before receiving the goods. Even if the money is already in your account, the product has not left yet and the cycle is not finished: when you dispatch, you still issue the delivery note, because that document records the physical movement of the goods, not the state of the customer's account. Paying in advance does not remove the need to record the stock leaving; it removes it less than ever, because now you also have the obligation to deliver what you already collected.

Common mistakes that unbalance the business

• Invoicing without dispatching: you issue the invoice and collect, but the goods never leave or leave without a document. You have registered income, stock that does not decrease as it should, and a customer who can claim they paid for something that never arrived.
• Dispatching without invoicing and forgetting the invoice: the goods leave, the customer receives them and nobody issues the invoice. The sale is never registered: inventory and receivables go out of balance, and the money may end up being collected from memory, if it is collected at all.
• Treating the quotation as a sale: you set stock aside or register commitments for an offer that no customer confirmed. If only three out of every ten quotations become sales, you will be freezing inventory you could actually be selling.
• Using the delivery note as an invoice: you hand the customer the delivery note as if it were the final receipt. The customer has the goods and a paper that does not oblige payment, and you lose the backing you need to collect.
• Dispatching with no document at all: the goods leave on the seller's word alone. If they get lost, come back incomplete, or someone asks what happened, you have no way to prove what left, when, or where it went.

How to keep control without going crazy

The good news is that control does not require endless paperwork, just order and consistency. First, number and file each type of document separately: quotations with their own numbering, delivery notes with theirs, and invoices with whatever your country requires. Second, set clear rules about when each document is issued and make sure the whole team knows them: the salesperson who dispatches without a delivery note, or invoices without dispatching, is unbalancing the business whether they know it or not.

Third, demand that delivery notes and invoices can be cross-checked. For every delivery note you should be able to answer: has this merchandise been invoiced or is it still pending? And for every invoice that involves delivery: does the delivery note backing that shipment exist? Crossing both documents lets you detect early the sales delivered without invoicing and the invoices issued without dispatching. Fourth, define a single moment for deducting inventory and stick to it: if the rule is that the invoice deducts permanently and the delivery note takes the goods out in a controlled way, keep it the same in every sale, because changing criteria halfway is exactly what unbalances your balances.

Fifth, review your pending items periodically: merchandise dispatched without an invoice, old quotations with no answer, delivery notes that were never matched to their invoice. That review, done weekly or every other week, shows you the real health of the business long before problems reach inventory or receivables. Keeping this order by hand is possible, but it consumes time and depends on people's memory; tools like Kardex Tauro exist precisely so that delivery notes, invoices and inventory movements stay linked and the cross-check resolves itself, without parallel spreadsheets.

In short

The quotation is an offer that moves nothing. The delivery note is proof that the goods left your custody. The invoice is the document that formalizes the sale, obliges payment and, in an integrated system, deducts inventory permanently. Using each document at the right moment is not bureaucracy: it is the difference between a business that knows what it has, what it owes and what is owed to it, and one that discovers the imbalances when it is already too late. Set your rules, number your documents, cross delivery notes with invoices and review pending items with discipline; with that, and with an inventory and stock-ledger program like Kardex Tauro backing the records, the sales cycle stops being a source of headaches and becomes organized information for making decisions.