ManagementJune 21, 2026· 7 min read

Supplier management for your shop: orders and debts under control

You buy from suppliers all day long, yet few shops really know what they order, at what price and how much they owe each one. Getting this in order is one of the things that saves you the most money. Here is how.

Why good supplier management saves you money

Buying well is the other half of selling well. Once you keep your suppliers under control you stop improvising and start making decisions with numbers in front of you. Three direct effects on your cash:

You negotiate better. If you know how much you buy from each supplier per year, you have arguments to ask for discounts, better payment terms or free delivery.

You avoid stockouts and overstock. Running out of a product that sells means lost sales; filling the warehouse with what does not move is money tied up. The balance comes from knowing what you order and when.

You know who you owe. Overpaying, paying twice or missing a due date are costly mistakes. With debt under control, you pay exactly what you should, on time.

Centralise your orders: what you order, from whom and at what price

The first step is to stop keeping orders in your head, in a notebook and across four WhatsApp groups. Centralise them in one place where, for each product, you record which supplier you buy it from, the purchase price and the sale price.

Tip: always store the purchase price next to the sale price. It is the only way to know your real margin product by product, and to spot when a supplier has raised prices without telling you.

When a product runs low, the order almost writes itself: the system warns you, you know which supplier to order it from and at what price. You generate the order, send it and it stays on record for when the goods arrive.

Keep supplier debt under control

This is the part most shops handle by guesswork, and the one that causes the most nasty surprises. The idea is simple: each supplier has a balance, just like a customer who owes you. Every purchase invoice adds to what you owe; every payment you make subtracts from it.

Record each purchase invoice. When goods arrive with their invoice, it is logged as an outstanding debt with that supplier.

Log your payments. When you pay, you record it against that supplier and the balance drops right away.

Check the history. On the supplier profile you see everything: invoices, payments and what is still left to pay, with dates.

So when a rep tells you "you have an unpaid invoice", you check it in seconds instead of rummaging through paperwork.

Receive the order properly

Goods receiving is where the errors that later do not add up sneak in. Do it with method:

Check against the delivery note. What actually arrived versus what the paper says. If something is missing or extra, note it now, not next week.

Add the stock. When you confirm the receipt, the units enter inventory automatically, ready to sell.

Record the invoice. You link the invoice to the order and the supplier debt is created. Order, stock and debt are squared away in one go.

Tip: always check the delivery note price against the one you agreed. Silent price increases are found right here, not at the end of the month.

Useful indicators

With the data in order, a handful of numbers tell you who is worth working with:

Margin per supplier. How much you really earn on what you buy from each one. Sometimes the "cheap" option leaves less margin than the expensive one.

Delivery times. Who delivers and who lets you down. A slow supplier forces you to keep more stock idle just in case.

Reliability. Who sends exactly what you ordered, with no shortages or last-minute changes. Consistency is worth as much as price.

Orders, stock and supplier debt in one place

Bipe is a POS with stock control, supplier orders and debt per supplier. Buy smarter and pay exactly what you owe, with no loose paperwork.

Try Bipe for free →

Frequently asked questions

How do I know how much I owe each supplier?

By keeping purchase invoices and payments in one place. In Bipe each supplier has a profile with outstanding invoices, recorded payments and the balance you owe in real time, with no manual maths.

Do I have to add stock by hand when an order arrives?

No. When you receive an order you mark the quantities that arrived and stock updates itself. You only adjust whatever differs from the delivery note, which is exactly where you should be looking.

Can I tell which supplier gives me the best margin?

Yes. If you store the purchase price and the sale price of each product, the system works out margin per product and per supplier. You see at a glance who earns you the most and who is worth negotiating with.