Custom ERP Development Cost for SMBs in 2026

The real price range for a custom ERP

The price of a custom ERP is one of the worst-documented figures on the web, because the term business software covers objects with nothing in common: a standalone quoting module bears no resemblance to a multi-module platform wired into accounting, payroll and an external API. To cut through the fog, here is the reference range we apply, breakdown included, built on ten years of pricing and more than fifty projects delivered since 2024.

A custom ERP runs from EUR 15,000 to 150,000, and a first structuring business scope generally fits within EUR 30,000 to 90,000. That core covers the modeling of real processes, two or three key modules, role-based permissions and an integration with the existing system. The top of the range, up to EUR 150,000, corresponds to a multi-module tool deployed across several departments, with dozens of users and numerous third-party connections. Between the two, every project positions itself by scope, not by an arbitrary rate card.

Three markers sum up the reading. The EUR 15,000 floor corresponds to a deliberately narrow scope, one or two modules tightly focused on a specific process. The EUR 30,000 to 90,000 core is the heart of the SMB market, where most first business ERPs land. The EUR 150,000 ceiling designates a complete information system spanning the whole company. One of our ERP projects, built for a hotel resort that coordinated its operations through a mosaic of spreadsheets, illustrates the core scope: centralizing operational flows in a single interface rather than funding a maximal scope from day one. This page details the same ranges as our reference white paper, the real price range of a digital project for an SMB, and digs deeper into ERP alone.

What moves the price between EUR 15,000 and 150,000

The spread from EUR 15,000 to 150,000 is anything but random: it comes down to four levers any business owner can check in a quote. Knowing them lets you read a price without being steered by it, and understand why two seemingly comparable ERPs can differ twofold.

1. The number of modules. Every functional module, quoting, invoicing, inventory, scheduling, HR, has to be designed, coded and tested. Going from two modules to six does not just double the scope; it also multiplies the interactions between features to validate, which pushes the envelope toward the top of the EUR 150,000 range.
2. Third-party integrations. Connecting to accounting software, a payroll tool, a payment solution or an external API: every integration is a specific development package to design, test and maintain. It is the number one cost driver in business software, ahead of screen count.
3. The number of users and roles. A tool for five people with the same profile does not demand the same rigor as a system shared by dozens of users with distinct permissions. Fine-grained access control, action audit trails and scaling add development that is invisible but structural.
4. Data migration. Recovering the history of a legacy system, cleaning it and reinjecting it without loss is a project of its own, and one that is frequently underestimated. The larger and more heterogeneous the existing data, the heavier this line weighs on the final budget.

The proportion rule that surprises business owners fits in one sentence: on business software, the number of screens weighs less than the number of connections. An extra interface duplicates at marginal cost; an integration with a third-party system has to be designed, tested and maintained over time. That is why an ERP with two modules but five critical integrations can cost more than an ERP with six standalone modules. On this hotel resort project, it was not the screens that shaped the budget, but the coherence of the real operational flows of the property, modeled around the field teams.

Cost per module: what each work package covers

To make the range of EUR 15,000 to 150,000 concrete, here is how the main modules of an SMB ERP break down. These orders of magnitude describe the core of the distribution across our projects, not a rate to the cent: a simple module often sits in the same quote as a far heavier integrated one. The right reflex is to demand a detailed price per work package rather than a single global figure.

The table shows one essential thing: it is not the visible modules that blow up a budget but the cross-cutting packages, accounting integration and migration first among them. On this hotel resort project, the core platform and the modeling of operations concentrated the effort, because the value lay in information flowing smoothly between field teams and administration, not in piling up screens. That is also why a credible price never boils down to a sum of modules: it includes the cost of their interconnection. For a sector-level order of magnitude of the median ERP cost by company size, we defer to a dedicated source rather than advance an unverified figure.

Custom ERP or packaged software: the real total cost of ownership

Comparing a custom ERP and off-the-shelf packaged software on entry price alone is the most frequent reasoning error. A packaged product shows a low initial ticket but most often bills per user per month: the bill climbs mechanically with your headcount and over time, and never stops. A custom ERP demands a concentrated investment, EUR 30,000 to 90,000 for a first scope, then holds at a predictable, low cost with no recurring license on every seat. The right reading grid is the total cost of ownership projected over five years, not the price of the first year.

The tipping point depends on two variables: the number of users and the expected lifespan of the tool. Beyond a certain headcount and a few years, the two curves cross and the custom build becomes the better deal, because the subscription runs forever while the build is amortized. Conversely, for a perfectly standard need and a small number of users, packaged software often remains the right call. The hotel resort we equipped illustrates the first scenario: no generalist suite modeled the operations of the property correctly, which made a custom build worthwhile despite an initial cost higher than a subscription. We unpack this trade-off in depth in our complete guide to custom ERP, the pillar page of the cluster.

One last element tips the scale: value is not measured by cost alone. An ERP that eliminates double data entry, makes data reliable and saves hours every week produces a return that the subscription ticket never captures. That is the difference between a cost and an investment, and it is why the right ERP is judged by its effect on productivity, not by its invoice line.

These two figures recall an obvious point often forgotten at budgeting time: the way you present your offer and your proof weighs on commercial performance. An ERP that better equips your sales team, with trust signals and a clear journey, acts on conversion well beyond its build cost.

How to budget a custom ERP without getting it wrong

Budgeting a custom ERP is not guessing a number inside the range of EUR 15,000 to 150,000; it is building a defensible envelope, then securing it through smart phasing. Here is the method we apply, from framing to production, which turns a wet-finger estimate into a quote split by work packages.

Three reflexes are then enough to read an ERP quote without being steered by it. First reflex: demand a split into work packages with a price per module. A EUR 90,000 lump sum announced as a block hides where the money goes; broken out into core platform, modules and integrations, it becomes readable and negotiable item by item. Second reflex: ask for the five-year total cost, hosting and maintenance included, because a quote that only shows the build is not cheaper, it is incomplete. Third reflex: check the code ownership and reversibility clause, so you can take the project back or change providers without starting from scratch.

A concrete example, the logic applied to the ERP of a hotel resort: rather than funding a maximal scope from day one, the project first centralized the critical operations in a single interface, then left the door open to additions driven by real usage. This phasing spreads the investment and validates the value before stacking new modules. On the exact size of the average return on investment of an SMB ERP, we prefer to stay cautious for lack of a defensible source.

The most reliable way to turn this range of 15K to 150K EUR into a precise budget remains a framing assessment, followed by a detailed quote split by work packages. That is the starting point we offer every SMB: a clear scope, a price per module and a funding trajectory adapted to your cash flow, with no commitment.