CRM System Development Cost — Comparing Off-the-Shelf and Custom-Built Options

A CRM (Customer Relationship Management) system is a mechanism for centrally managing customer information, along with sales and support interaction history, to make sales and customer service operations more efficient. The cost of developing a CRM system varies enormously — from tens of thousands of yen to tens of millions of yen — depending on whether you use an off-the-shelf SaaS as-is, add customization and integrations to it, or build a fully custom system tailored to your workflows. This article organizes the typical cost range for each approach and how to think about choosing the right one for your company.

- Customer ledger (customer master data): Centrally manages company names, contacts, phone numbers, and transaction history
- Interaction history and deal management: Records calls, visits, and emails chronologically and shares them across team members
- Email integration: View and link customer email exchanges directly within the CRM
- Task and deal management: Manage follow-up deadlines and deal status
- Analytics and reporting: Visualize deal progress, win rates, and rep-by-rep performance on a dashboard

For most small and medium-sized businesses, the first thing to evaluate is an off-the-shelf CRM SaaS. Basic functions such as a customer ledger, interaction history, email integration, and simple analytics are largely covered by the standard features of off-the-shelf CRMs. In particular, if your sales process follows a fairly typical visit-negotiation-order flow, or if you don't need industry-specific approval workflows or forms, choosing an off-the-shelf CRM tends to keep both initial and ongoing costs lower and gets you up and running faster. Before considering custom development, checking how far the customization settings and API integrations of an off-the-shelf CRM can meet your business requirements is the quickest way to keep costs down.

Ways to implement a CRM system generally fall into three stages: 'use an off-the-shelf SaaS as-is,' 'add customization and external integrations to a SaaS,' and 'build a fully custom system tailored to your workflows.' The approximate cost for each is shown below (these are general guidelines that vary depending on requirements).

Using an off-the-shelf SaaS as-is has the major advantage of requiring almost no upfront cost, letting you start using it right after signing up. Many services use per-user monthly billing, making it an approach well suited to starting small.

SaaS plus customization and external integration is a way to fill gaps that the standard features of an off-the-shelf CRM can't cover, through configuration changes, API integrations, or light additional development. This approach is chosen when you need to connect data with accounting or core systems, or generate custom reports. As explained in our guide to ordering a system, sorting out at the requirements-definition stage which parts will be handled by standard features, customization, or integration is key to keeping costs from ballooning.

Custom development makes sense when there are industry-specific, complex approval workflows, or unique customer-management rules that can't be represented in an off-the-shelf CRM's data model. Examples include deals that go through multiple, varying layers of approval, or highly diverse contract structures that a standard customer master can't accommodate. Conversely, unless such unique circumstances exist, there's little necessity to choose custom development.

- Number of users and departments: If the CRM will be used not only by sales but also by support, marketing, and other departments, functional requirements increase
- Number of integrations with existing systems: The more systems you connect — accounting, core systems, e-commerce platforms — the higher the development and maintenance cost
- Volume and complexity of data migration: If existing customer data is scattered across multiple spreadsheets or systems, migration design takes more effort
- Depth of customization: Costs differ greatly between adding fields or adjusting layouts versus changing the underlying business logic itself
- Security and access-control requirements: Since customer data is involved, complex department- or role-based access permissions often add extra cost

- Start by mapping your current workflow: Sort out who enters and references which information, and when, before defining functional requirements
- Actually try an off-the-shelf CRM's trial: Check not just the feature list but how it feels to operate with real customer data
- Consider no-code/low-code platforms such as kintone: Understanding the limits of building a CRM on kintone helps you judge how much can be covered by an off-the-shelf platform and where to switch to custom development
- Get quotes from multiple vendors: Even for the same requirements, quoted amounts and proposals vary significantly between development companies, so compare them (see also how to think about system development costs)
- Design with future scalability in mind: Even if you start small, designing with future feature additions and user growth in mind helps keep additional costs down later

The cost of developing a CRM system varies greatly depending on the approach: using an off-the-shelf CRM lets you start small with almost no initial cost and monthly fees from a few thousand yen; adding customization or external integrations typically runs from several hundred thousand to a few million yen; and custom development tailored to your workflows can run into the tens of millions of yen. A sound approach is to first check how far an off-the-shelf CRM can meet your requirements, and only consider customization or custom development for the parts that remain unmet. Because costs vary depending on requirements, we recommend getting quotes from multiple vendors and comparing them.