Quote to Purchase Order: Verified Supplier, Firm Price

Quote to Purchase Order: Verified Supplier, Firm Price

In part two the need got a numbered request, and the decision got an approval whose owner is known. But an approval says the company will spend; it does not say with whom, at what price or on what terms. Those are the questions for the next two stations: the supplier and the quote, then the purchase order.

These two stations are where the break we described in part one happens: a quote that arrived as a photo in a chat, then an invoice at a higher unit price or with a delivery charge nobody mentioned, and a purchase order written after the invoice to cover it. This part fixes that in three steps, in order: a supplier record entered once and checked when the supplier is added, quotes compared on one basis, and a purchase order that turns the chosen quote into a written commitment the owner can see before any invoice arrives.

The supplier record: entered once, checked when it is added

Every purchase order, every invoice and every payment will point back to a supplier. If the supplier's details are incomplete, or written three different ways, every document after them inherits the problem. So getting purchasing under control starts with the supplier record, not the quote. A good record carries six core details:

• The name as it appears on the commercial register, not the short name the team knows it by, and not the name of the sales rep they deal with. The short name can stay as a search field, but the registered name is what has to match the invoice and the bank account.
• The establishment's unified national number. You search for the register entry with it in the Ministry of Commerce service, and it is steadier than a name that can be spelled several ways.
• The VAT number, if the supplier is registered for VAT. Its tax invoices will carry this number, and we come back to it in part five.
• The address as registered, because official documents need it and because it helps tell apart two businesses with similar names.
• The IBAN, on an official letter from the supplier, not copied from a WhatsApp message or an email signature. At entry, someone checks that the account holder's name on the letter is the supplier's own registered name.
• The agreed payment terms: advance payment, payment on delivery, or credit for an agreed period. These terms carry over to every purchase order automatically, so they are not renegotiated each time and do not surprise the accountant at payment.

Because the IBAN is where the money goes, changing it is not treated as a routine edit. The well-known method here needs no technical hacking: an email that looks like it comes from the supplier, with its signature and logo, says the account has changed and asks for future payments to go to a new one. The employee who acts on it in good faith has done nothing wrong, and the control that protects them is simple: changing bank details needs a new official letter and a confirming call to the supplier's number already on the record, not the number in the email itself; the system logs who changed it and when, and someone other than the person who entered the change approves it. The same goes for creating a new supplier: the person who adds it is not the person who pays it, not because either is under suspicion, but because that separation protects both from any question later.

Two free official checks before the first purchase order

Before a supplier joins your list, two checks from two official sources are enough, both free and a matter of minutes:

• The VAT registration check from the Zakat, Tax and Customs Authority (ZATCA). An online service open to taxpayers and the public: search by one of three numbers, the VAT number, the commercial registration number or the VAT certificate number, and the business's VAT registration status appears.
• The commercial register enquiry from the Ministry of Commerce. An immediate, free service where you search by the establishment's name or its unified national number and view its commercial register details without visiting a ministry branch.

The point of the two checks is not to distrust the supplier but to make sure three names match: the name on the commercial register, the name linked to the VAT number, and the name on the bank account letter. If they do not match, the question gets asked now, before the first purchase order, not after the first payment.

Note that not every supplier is required to register for VAT, so a small supplier with no VAT number is not necessarily a problem. The reverse deserves attention, though: a quote that adds VAT from a supplier whose registration does not show up. ZATCA's service for reporting VAT violations lists, among its examples, an incorrect tax identification number and tax collected by an unregistered person. Ask the supplier about it before you issue the order, and take any question about the effect on your own VAT to your tax adviser.

The duplicate supplier: one company, two names

In why system stock does not match the shelf we described the single item entered under two codes, so one looks out of stock and the other looks dead when they are the same thing. Supplier lists catch the same illness. A steel supplier is entered by one employee under its trading name, by another a year later under the name on its invoice, and by a third under the name of its branch in another city. One company, three records, and three consequences:

• A split history. The supplier's record on delivery, quality and prices is spread over three records, so you never see the full picture when you compare its next quote with others.
• A hidden share of spend. This supplier may be your largest without you knowing, because what you pay it is spread over three names. That matters when you negotiate, and matters more when you realise that if it stops, more than one site may stop with it.
• An easier double payment. A duplicate-invoice check usually looks for the same invoice number from the same supplier. If the invoice is recorded once against the first record and once against the second, it passes the check twice.

The fix is a supplier identifier that cannot repeat: the unified national number, together with the VAT number where there is one. The system refuses to create a second record with the same number and searches for similar names before creating one, so it tells the employee the supplier already exists instead of leaving it to their memory. The existing list is cleaned once: duplicate records are merged into a single record that keeps their whole history.

Comparing quotes on one basis

When you need more than one quote, and when one is enough because the supplier is the only one or because a price agreement with them is in force, is a decision the owner puts in the purchasing policy. But when you do ask for several, the comparison only holds if the quotes sit on one basis. Quotes arrive in different formats, and each format makes its own quote look cheaper:

• The same unit. One supplier prices by the tonne and another by the bundle, or one hotel-supplies vendor prices by the carton and another by the piece, with cartons of different sizes. Convert prices to one unit before comparing anything.
• VAT shown separately. One quote states the price including VAT and another before it, so the second looks cheaper when it is not. Record every quote with its price before VAT and the VAT amount separately.
• Delivery date and place. A price delivered at the supplier's warehouse is not a price delivered to site. The first means loading, transport and unloading at your cost, and possibly a truck you do not have on the day you need it.
• Payment terms. A quote that asks for an advance ties up your cash from day one, while a credit quote leaves the cash with you until receipt and checking. That is a difference in cost even when the price is identical.
• Quote validity. An expired quote is not a price; it is the starting point for a new negotiation. Its expiry date is recorded so no purchase order is built on a price the supplier is no longer bound by.

That is why the lowest unit price is not always the lowest cost. The cheapest quote may not include delivery to site, or may come with a later delivery date that delays a concrete pour on site or stops a production line in a factory, or may ask for an advance that ties up cash you need, or may describe the item so loosely that a substitute arrives that does not meet the specification. With services the difference lies in scope more than in price: of two quotes to maintain a hotel's central air-conditioning, one may look cheaper because it excludes spare parts, or because it charges emergency call-outs outside the contract.

And the delivery date in a quote is only a promise. In when to reorder and how much: reorder point and safety stock we explained that real lead time runs from issuing the purchase order until the goods are on the shelf ready to issue, and that working it out from the supplier's promise alone is the most expensive mistake. So every purchase order records when the goods actually arrived, and next time you compare the supplier's record, not its promise. Then the comparison sheet is kept with the request, with one line explaining the choice whenever the supplier chosen is not the cheapest. That line answers the reviewer's question months later, and protects whoever made the decision.

The purchase order: the chosen quote becomes a written commitment

The purchase order is the document in which the company tells the supplier: this is what we agreed, deliver it. It controls nothing unless it is issued before the supply, not after the invoice to cover it. The order carries exactly what was agreed:

• The item with its specification, the quantity and its unit, the unit price before VAT, and the VAT amount separately.
• The delivery date and place: the site, the warehouse or the specific property.
• The payment terms, carried over from the supplier record or as agreed in this particular quote.
• The number of the purchase request it started from, a reference to the chosen quote, and the number of the project or site the cost is charged to.

In contracting the order sometimes takes the form of a work order to a subcontractor, and for recurring supplies and services the form of a price agreement for a set period, with successive orders issued under it without collecting quotes again each time. The name differs and the principle is the same: a written commitment linked to its request, against which what arrives and what is invoiced are measured.

The most important thing a purchase order adds is that it makes the commitment visible before the invoice exists. In cost control and payment applications we compared the actual cost of each item with what was priced in the bill of quantities. The purchase order adds a layer ahead of the invoice: what the company has committed to but has not yet been invoiced for. So for each project, site or property the owner sees three figures together: the budget, what is committed in open orders, and what has actually been invoiced. A project whose actual costs look comfortable may already have committed nearly its whole budget in open orders, and that does not show in any report built on invoices alone.

A change is a new version, never an overwrite. Orders change: the supplier delivers part of the quantity now and the rest later, asks for a higher price because the material's price moved, or the site needs an extra quantity. Every change to price, quantity or terms is recorded as a new version of the order with a revision number, a reason and a date, and the previous version stays visible. If the revision raises the amount above what was approved, it goes back for approval, as we explained in part two. A partial delivery does not change the order at all: each receipt is recorded against its line, and the open balance stays visible until it arrives or is closed with a written reason, so no commitment is left hanging that nobody is waiting for any more. If the order were edited to match what arrived, the gap that matching needs in the next part would disappear.

The Origami view

When we build this stage for a company, we start from its supplier list as it is, and from its recent purchase orders as they were actually issued: where suppliers are duplicated, where each IBAN came from, and how many orders were written after their invoices. That reading decides what needs cleaning before the system, because a supplier list with duplicates carries its problem into any new system unchanged.

Then we connect the supplier record and the purchase order to the request before them and the receipt and invoice after them, and to the accounting system the company runs on, with a supplier identifier that cannot repeat, bank detail changes that only go through with approval, and revision versions that keep every order's history. This is part of the custom systems we build, described in our services.

An exercise for this week: a clean supplier list and ten verified suppliers

This exercise needs no new tool, and the finance manager can run it with the purchasing lead in one or two sittings:

• Export your full supplier list from the accounting system or the file you work from, sort it by name, and look for similar names. Ask of each group: is this one business?
• Pick your ten largest suppliers by what you paid them over the past year, after bringing their duplicates together under one name.
• Check each one in the two official services, and compare the name on the commercial register with the name linked to the VAT number, and with the name on the bank account you pay into.
• Ask about every IBAN: where is the official letter it came from? When did it last change, who changed it, and how was it confirmed?
• Go back to the ten invoices from part one's exercise, find the quote and the purchase order for each, compare their unit price with the price on the invoice, and compare the order's date with the invoice's date.

A purchase order dated after its invoice, a price on an invoice that no quote explains, an IBAN nobody can trace: these are the points the system closes first. And if you find most orders are written after the invoice, the reason is usually that issuing an order is slower than the work, and the fix is an order raised from the approved request in one step, not a stricter control.

In the next part

The purchase now has a verified supplier and a written order carrying what was agreed. The next part follows the order to where paper meets reality: receiving at the warehouse gate or on site with the quantity actually counted, the completion record for services and subcontractors, then three-way matching between the purchase order, the receiving record and the invoice, and why no money is released until all three agree.

Sources

• Zakat, Tax and Customs Authority: VAT registration verification service — search by VAT number, commercial registration number or VAT certificate number; the service is free and open to taxpayers and the public.
• Zakat, Tax and Customs Authority: Reporting VAT Violations service — its examples include an incorrect tax identification number and tax collected by an unregistered person.
• Ministry of Commerce: commercial registration data enquiry service — search by establishment name or unified national number; the service is immediate and free.