Monitoring Purchasing as an MSP or Telecom Reseller: How to Keep Margin Under Control

These are the key points

• Purchasing monitoring is the active monitoring of what you purchase from suppliers, at what price and for which customer, every single month.
• Margin leaks at MSPs and telecom resellers almost always arise from unnoticed rate changes, cancellations that keep running or costs that are never recharged.
• A margin leak of 2 to 3 percent may seem small, but on an annual basis it adds up considerably across total revenue.
• Excel and an accounting system are not purchasing-monitoring tools: they record, they do not monitor.
• Automated purchasing monitoring flags deviations the moment they occur, not weeks later.
• ResalePartners connects more than 110 integrations for real-time insight into purchasing and margin per customer.

What is purchasing monitoring and why is it not an administrative afterthought?

Purchasing monitoring is the active and structural monitoring of what you purchase from integrations, at what price, under which contract terms and for which customer. It deliberately goes further than booking invoices or checking periodically. Purchasing monitoring is a continuous process that ensures your purchasing is consistent at all times with what was agreed, what was actually used and what you recharge to customers.

For MSPs and telecom resellers, purchasing monitoring has a direct financial dimension. You sell services whose purchasing costs can change every month: rates are adjusted, licence numbers fluctuate, bundles are revised and variable usage varies per customer. If you do not actively monitor that purchasing, you lose margin without noticing. And that loss becomes visible when it is already too late.

Many MSPs think they have this covered through their accounting system or PSA. That is an understandable misconception. An accounting system records what has been booked. A PSA manages tickets, assets and hours. Neither actively monitors whether your purchase invoice matches your contract agreements, whether a supplier has raised a rate in the meantime, or whether a discontinued service is still being billed. That is exactly what purchasing monitoring does.

How does a margin leak arise at MSPs and telecom resellers?

A margin leak is rarely one big mistake. It is the sum of small deviations that go unnoticed month after month. For MSPs and telecom resellers, there are four structural sources of margin leakage.

1. Rate changes you implement too late

Suppliers communicate price changes, but whether those land in your selling price straight away is another matter. Microsoft adjusts CSP prices monthly when subscriptions are renewed or changed. If you notice those changes a month too late, you will have invoiced at too low a margin for that period. Multiplied across dozens of customers, that quickly adds up.

2. Discontinued services that keep running

A customer cancels a licence. You process it in the PSA. But the supplier does not cancel the subscription in time, or you forget to pass it on, and the costs simply keep coming in. Without active monitoring, you only spot this when you go through the invoice manually, and with complex invoices running to hundreds of lines that is virtually impossible to do on a regular basis.

3. Variable usage outside the bundle

Telecom resellers know this scenario: a customer uses more than the agreed bundle. Those extra costs reach you via the supplier invoice, but do they always end up on the customer invoice as well? If that is not connected automatically, there is a strong chance that you incur extra purchasing costs without fully recouping them.

4. Purchasing costs that are not tracked per customer

The absence of a direct connection between purchasing and customer is the most common source of margin leaks. If you book purchasing costs broadly and do not break them down per customer, you have no view of the cost price per customer and therefore no view of the actual margin. That margin then becomes an assumption rather than an established fact.

The Five Signs That Your Purchasing Is Not Being Properly Monitored

Purchasing monitoring starts with recognising where things can go wrong. These are the five most common signs that an MSP's or telecom reseller's purchasing is not being adequately monitored.

• You only discover price deviations at the month-end close. If deviations in supplier invoices only surface at the end of the month, you have already invoiced at the wrong margin for a month too long.
• You do not know exactly what the cost price per customer is. If you cannot answer that question within a minute, there is no active connection between purchasing and customer.
• Your invoice checks are done on a sampling basis. Sampling means you do not check everything. What you do not check, you do not flag.
• Your back office spends more than two hours a month on manual invoice comparison. That time is a clear indication that the monitoring process is not automated.
• You have found licences or services that were still being billed after cancellation. This is the clearest proof that monitoring is reactive rather than preventive.

How does structural purchasing monitoring work in practice?

Structural purchasing monitoring revolves around three elements: real-time data insight, an automatic connection per customer and proactive deviation alerts.

With InkoopControle from ResalePartners purchase invoices from more than 110 integrations are loaded in automatically via API integrations or CSV import. Every invoice line is connected directly to the relevant customer profile and the relevant service. As soon as a deviation is detected, you receive an alert before billing goes through to the customer.

That gives you an up-to-date and traceable margin overview per supplier, per service and per customer. You see immediately where costs are rising, where contracts have changed and where usage deviates from expectations. That data is relevant not only for day-to-day administration: it is strategic information for the conversation with suppliers about rates, for evaluating your portfolio pricing and for decisions about growth.

For the financial controller or director, this means margin is no longer an estimate at the end of the month, but a continuously visible figure that is traceable to invoice lines at any time. That strengthens internal reporting, makes audits easier and lays a more reliable foundation under the business. Would you also like to know how you structurally detect deviations in supplier invoices? And how you automated invoice processing lay the foundation for reliable purchasing monitoring?

When does automated purchasing monitoring pay off?

Automated purchasing monitoring pays off as soon as the complexity of your supplier landscape exceeds what you can keep track of manually. For most MSPs and telecom resellers, that is already the case with three or more active suppliers with variable invoice structures.

In concrete terms: if your back office spends more than two hours a month on manual invoice checks, automated monitoring quickly becomes cost-effective. Product information from ResalePartners cites a time saving of up to 80% on manual checks. Add to that the fact that structural purchasing monitoring can prevent or correct margin leaks of two to five percent, and the business case quickly becomes clear. That margin improvement translates directly into net profit.

For growing MSPs, scalability is the decisive argument. More customers and more suppliers do not by definition mean more checking hours if your monitoring is automated. The system scales with you without the back office having to grow proportionally. Also take a look at how 110+ integrations and platforms are supported within the ResalePartners ecosystem.

Do you know what your purchasing really costs you, per customer?

Book a free demo of InkoopControle and discover in 30 minutes where margin is leaking away and how to solve it structurally. Our specialists work through it with you based on your own supplier mix.

View the full purchasing control for MSPs