How this actually works
Explanations of the mechanics behind each module — the arithmetic, the controls, and the places each technique stops working. Every guide links the demonstration that shows it running, so you can read the explanation and then go and use the thing.
- Choosing a system
ERP vs Spreadsheets: When a Business Actually Outgrows Excel
Spreadsheets fail in four specific ways as a business grows. Here is what each failure looks like, the signals that you have hit it, and what migrating costs you.
- Choosing a system
What ERP Really Costs a Small Business
Licence fees are the smallest line. Here are the five components of total cost, the one almost every budget omits, and a worked example for a 25-person business.
- Procurement
The Three-Way Match, Step by Step
The control that stops you paying for goods you never received. What the three documents are, how tolerances work in practice, and the cases where the match legitimately fails.
- Inventory
Reorder Points and Safety Stock, With the Arithmetic
The reorder point formula, where safety stock comes from, a worked example with real numbers, and the three situations where the standard formula quietly misleads you.
- Inventory
Perpetual vs Periodic Inventory
Two ways to know what stock you hold and what it cost. How each derives cost of goods sold, what each demands operationally, and why perpetual still needs counting.
- Manufacturing
Bill of Materials: Single-Level vs Multi-Level
What a BOM records, how single-level and multi-level structures differ, where quantities multiply, and the details — scrap, effectivity, phantoms — that cause most BOM errors.
- Manufacturing
MRP vs ERP: Where One Ends and the Other Begins
MRP is a calculation; ERP is a system of record that contains it. What MRP actually computes, the inputs it depends on, and when a business genuinely needs it.
- Finance
General Ledger vs Subledger
Why accounting systems split into a general ledger and subsidiary ledgers, how control accounts tie them together, and what it means when the two stop agreeing.
- Finance
Multi-Currency Accounting for Exporters
Three currencies, two dates, and the difference between realised and unrealised gains. How foreign exchange actually moves through the ledger, with a worked example.
- HR and payroll
From Timesheet to Payslip: Anatomy of a Payroll Run
What happens between hours worked and money paid: the gross-to-net sequence, employer costs against employee deductions, the ledger postings, and how corrections work.
- Implementation
An ERP Implementation Checklist Without the Vendor Spin
Most implementation checklists optimise for go-live rather than for working afterwards. This one covers scope discipline, data cleanup, cutover choices, and what done should mean.
- Implementation
Why ERP Projects Fail
The failure modes are few and repeat: customising around broken processes, data nobody cleaned, no internal owner, and treating go-live as the finish. With the warning signs for each.