Invoice vs. Delivery Note: What Each Is For and Why Matching Them Matters

Ask five restaurateurs the difference between an invoice and a delivery note, and you'll get five answers with varying degrees of clarity. Some only file what their accountant tells them to. Others keep both but never compare them. And a few religiously compare them and save themselves from unpleasant surprises.

This article is for the first two groups. If you already match delivery notes with invoices every month, skip to the end, where you'll find information on how to automate it.

What is a Delivery Note

A delivery note is the document that accompanies the goods at the time of delivery. The delivery person brings it, you or the recipient signs it, and it serves as proof that something was delivered.

Its practical function:

• Details what has been delivered (references, quantities).- Sometimes includes unit prices, sometimes not.- Almost never includes IVA or complete totals.- Serves as an acknowledgment of receipt.

What a delivery note does not do:

• It is not required for payment. Your obligation to pay arises with the invoice, not the delivery note.- It does not have fiscal validity on its own (it is not reported to Hacienda).

In daily practice, the delivery note is the slip of paper you sign when an order arrives, and in many restaurants, it accumulates in a box until the end of the month.

What is an Invoice

An invoice is the accounting and fiscal document. It is what your supplier issues to charge you and what you file in your accounting records.

Its function:

• Details everything charged: products, quantities, unit prices, discounts, IVA, total.- Must meet formal requirements (number, date, fiscal data of issuer and recipient, itemized IVA, etc.).- It is the document your manager includes in your IVA declarations.- It is what is legally required to be kept for years.

Sometimes an invoice corresponds to a single delivery: something is delivered to you on Tuesday, and an invoice is issued on the same Tuesday. With most recurring hospitality suppliers, this is not the case: they deliver several times a week (multiple delivery notes), and at the end of the month, they issue a single invoice that groups all deliveries.

The Importance of Matching Them

Here's the point many people miss: an invoice without its delivery notes is a black box.

When you receive a monthly invoice from your fishmonger totaling 4,812€, how do you know it's correct? You have several options:

1. Pay it without further thought — you trust the supplier. This is what most people do.2. Only look at the total — you compare it with previous months. If it's within the usual range, you assume it's correct.3. Match it with the delivery notes — you take the month's delivery notes and check line by line that the invoice accurately reflects what was delivered and at the agreed price.

Only the third option gives you certainty. The other two are blind faith.

Errors Detected by Reconciliation

When you match invoices with delivery notes, the typical errors that appear are:

1. Delivery note not invoiced. The supplier forgot to include it and, naturally, doesn't charge you for it. This is an unexpected benefit, but sometimes the supplier discovers it months later and invoices you belatedly, which disrupts your accounting reconciliation.

2. Invoiced item not delivered. Rarer but it happens. You would pay for something that never arrived.

3. Price different from agreed. The price on the delivery note does not match the invoice, or neither matches what you had verbally agreed upon. Silent price increases.

4. Different quantity. They deliver 8 kg but invoice you for 9. Or vice versa.

5. Incorrect IVA applied. They apply a different rate than what corresponds to the product (general food 10%, basic products 4%, etc.).

6. Duplicate delivery note. The supplier includes the same delivery note twice on the invoice.

7. Random charges (transport, packaging, management) that were not on the delivery note and appear on the invoice.

Any of these errors are resolvable if you detect them in time. If you pay the invoice without seeing them, almost no one returns money on their own initiative.

Why Almost No One Does It Well Manually

Matching a month's worth of delivery notes with a monthly invoice from an active supplier is a tedious job. Let's look at the numbers:

• 1 fruit and vegetable supplier delivers 4 times a week → 16 delivery notes/month- 1 monthly invoice with 60-80 lines- Each delivery note with 8-15 lines

To match manually: sort the 16 delivery notes by date, review line by line that each product/quantity/price matches the invoice, mark the differences. An hour well spent if you are focused.

Multiply that by 8-12 recurring suppliers, and you're looking at 8-12 hours monthly just for reconciliation, if you do it every month. Many people do it every three months, or when an invoice stands out as abnormal. That means errors are running for months undetected.

How to Do It Well with Automation

Reconciliation is one of those processes that computers do better than humans when data is digitized:

1. Each invoice and delivery note goes through OCR and is converted into structured data (supplier, products, quantities, prices).2. The system looks for the "associated delivery notes" field on the invoice (most suppliers include it) or cross-references by dates and products.3. For each line of the invoice, it checks if there is a supporting delivery note at the same price and quantity.4. What matches → marked as reconciled, no intervention needed.5. What doesn't match → marked for human review, with the difference highlighted.

That last step is what saves time: you don't review thousands of correct matches, only the handful of discrepancies.

What to Do When You Find a Discrepancy

Whether with automatic or manual reconciliation, when a discrepancy appears, the steps are:

1. Document: note the invoice, affected delivery note, specific line, and exact difference (price, quantity).2. Contact the supplier with data: "On invoice 2026-04-128, line 7, you charged me for 9 units of X at 3.80€, but delivery note 4521 from April 12 says 8 units at 3.80€. There is one unit overcharged."3. Do not pay the disputed amount until resolved, or pay the undisputed amount and leave the difference in dispute.4. Document the resolution: supplier's corrective invoice, credit on the next invoice, etc. If the problem is recurrent, you'll want to keep everything saved.

Conclusion

Invoices and delivery notes are not redundant: they are two distinct proofs of the same transaction, and only by cross-referencing them do you detect errors that would otherwise be paid unknowingly.

Manually, it's feasible but time-consuming. Automated, it becomes trivial: the system matches what aligns, shows you only what doesn't, and your job is reduced to calling the supplier when necessary.

If you want to see your invoices and delivery notes matched automatically, try it on Sincrio.