Every ERP conversation starts with the same question and gets the same unhelpful answer: "it depends". It does depend — but on a small number of things you can actually estimate, so here is the arithmetic.
The five cost lines
1. Software. For an off-the-shelf ERP, expect $25–$120 per user per month for cloud products, or a one-time licence of PKR 1.5–8 million for on-premise. For a custom build, this line becomes development cost: PKR 4–20 million depending on module count.
2. Implementation. This is the line that surprises people. Configuration, data migration, integration and testing typically run 1.5× to 3× the software cost for off-the-shelf products. A PKR 3 million licence with a PKR 6 million implementation is normal, not a rip-off.
3. Data migration. Budget 10–15% of the project. If your current data lives in spreadsheets with inconsistent product codes, budget more. This is where projects quietly bleed time.
4. Training and change management. 5–10% of project cost, and the line most often cut first. Cutting it is why ERPs get bought and not used.
5. Ongoing. 15–22% of licence cost annually for support and updates, plus hosting if cloud-hosted yourself, plus a realistic budget for the changes your business will need in year two.
Real ranges
| Business size | Scope | Realistic first-year total |
|---|---|---|
| 10–30 users, one location | Inventory + sales + basic finance | PKR 3.5–8M |
| 30–100 users, multi-location | Full finance, inventory, procurement, HR | PKR 9–25M |
| 100+ users, manufacturing | Above plus production, MRP, quality | PKR 25–70M |
The three costs nobody budgets for
Your team's time. Your finance lead, warehouse manager and operations head will each spend 15–20% of their time on the project for its duration. That is real cost, and pretending it is free is how timelines slip.
Parallel running. For one full cycle you run both systems. It is expensive, it is tedious, and skipping it is the single most common cause of a failed go-live. When the two systems agree to the rupee, nobody argues about the numbers on day one.
The second year. Your business will change. Budget 10–15% of the original project cost annually for changes, or the system starts drifting away from the operation it was built for.
Where to cut, and where not to
Cut modules. Almost nobody needs everything in phase one. Inventory and sales first, finance second, HR and production later — each phase delivering value before the next begins.
Do not cut the process audit, the data migration or the parallel run. Those three are what separate an ERP that gets used from an expensive database nobody trusts.
A note on "cheap" quotes
If a quote is dramatically below the ranges above, one of three things is true: the scope is much smaller than you think, the implementation is not included, or the vendor intends to make it back on change requests. Ask specifically which.