Resources
Practical notes on planning and procurement.
How the arithmetic actually works, written for the person who has to do it on Monday morning. No gated downloads, no sign-up, no sales call at the end.
How to set safety stock without guessing
Safety stock has to cover demand swings and late suppliers. The usual formula only covers the first. A worked example shows the lead-time term is often the bigger number.
Landed cost: what actually goes into the price of imported goods
A quote of 50 per unit becomes 58.46 on the warehouse floor. Where the other 8.46 comes from, line by line.
How to compare supplier quotations that aren’t comparable
Different currencies, Incoterms and minimum orders make the unit-price column meaningless. Put them on one footing and the ranking can reverse.
Supplier on-time-in-full: seven ways to measure it wrong
Latest promise versus original, order versus line level, averages that hide the one bad supplier. Why two buyers get two different scores.
Demurrage and detention: how the charges build up, and who pays
Two separate clocks, rates that step up, and a bill that goes to the consignee whoever caused the delay.
ABC and XYZ classification: where your attention and your stock should go
Rank by value and by predictability, then use nine boxes to decide how each part should be bought. Includes how to find dead stock.
The software behind the method.
Everything described here is how Procurement Control Tower actually works, not a theory written alongside it.
See how it works