Custom Software vs. SaaS Subscriptions in Kenya: The 5-Year Total Cost of Ownership Breakdown

Most Kenyan businesses run on a patchwork of subscriptions: a CRM here, a project tool there, an invoicing app, a booking system, a form builder, an email platform, and an automation tool connecting them. Each one looks affordable. Together, billed in US dollars per user per month, they quietly become one of the biggest overheads in the business.

This guide compares the five-year total cost of ownership of SaaS subscriptions and custom software, with Kenyan numbers, so you can decide when to rent and when to build.

What is total cost of ownership (TCO)?

TCO is everything a system costs over its useful life, not just the price tag. For software, include:

• Licences or development cost.
• Per-user fees as your team grows.
• Add-ons and integrations needed to make tools work together.
• Currency movement on USD-billed subscriptions, plus card and bank charges.
• Hosting, support and maintenance.
• Staff time lost to workarounds, double entry and switching between tools.
• Switching costs if a vendor raises prices or shuts down.

Five-year cost comparison: 25-user business

Illustrative example for a Kenyan company using a CRM, invoicing, project management and automation tools. Figures are indicative and assume a stable exchange rate, which in practice is rarely the case.

At five users, the picture flips: the SaaS stack might cost under KES 1 million a year and custom development would be hard to justify. The break-even point depends on user count, tool count and how much your process differs from the standard.

When is SaaS the right choice?

• Small teams of fewer than 10 to 15 users.
• Standard processes that match how the tool already works, such as email marketing or accounting.
• Testing a new process before committing to build it.
• Specialised, regulated tools where the vendor’s expertise is the value, such as payroll or accounting.
• Speed matters most and you need something running this week.

When is custom software the right choice?

• Growing headcount where per-user fees are compounding.
• A distinctive process that gives you a competitive edge, which generic tools force you to abandon.
• Too many disconnected tools, with staff copying data between them.
• Kenyan integrations such as M-Pesa, eTIMS and WhatsApp that SaaS tools handle poorly.
• Data sensitivity: you want full control over where customer data is stored.
• Selling the software itself, as a portal or platform for your own customers.

What are the risks of custom software?

Custom builds can fail, and it is better to know the risks upfront, so they can be designed out of the contract and the project plan:

• Scope creep: trying to build everything at once. Phase the project.
• Developer dependency: insist on owning the source code, documentation and hosting accounts.
• Poor adoption: involve users from the start.
• Underfunded maintenance: budget for support every year, not just the build.
• Choosing on price alone: the cheapest quote often omits testing, documentation and security, which then cost more to add later.
• No exit plan: agree how the system and data would be handed to another developer if the relationship ends.

Is there a middle path?

Often, yes. Many Kenyan businesses keep specialist SaaS for accounting, payroll and email, and build a custom core system for sales, operations and customer-facing workflows that ties them together. The core system becomes the single source of truth, replacing the spreadsheets and copy-pasting described in our cornerstone article your spreadsheets are leaking money.

Good candidates for the custom core are a CRM built around your sales process and an ERP for stock, sales and eTIMS.

How do you run a fair build-vs-buy analysis?

1. List every tool you pay for, with users and monthly cost in KES.
2. Project costs over five years at expected team growth.
3. Estimate hours lost weekly to double entry and workarounds, then cost them.
4. Get a phased custom quote for the core workflows only, not every feature you can imagine.
5. Include the cost of migrating data out of current tools and training staff on the new system.
6. Compare totals, then weigh strategic factors: data ownership, fit and integrations.

How Nimus helps Kenyan businesses decide and build

Nimus (nimus.co.ke), a Nairobi software and growth agency, runs build-versus-buy assessments before writing any code. Through its custom business systems and software service, Nimus recommends SaaS where it fits, builds custom systems where they pay back, and hands over source code and hosting ownership, with the system feeding the reporting of the Nimus sales engine.

Frequently Asked Questions

How much does custom software development cost in Kenya?

Small custom tools and portals typically cost KES 150,000 to 500,000 in Kenya. Business systems such as CRMs, ERPs and booking platforms usually cost KES 500,000 to 3 million, depending on modules, integrations and users. Annual support typically adds 15 to 25 percent of the build cost.

Who owns the code when I pay for custom software?

That depends on your contract. Insist that full intellectual property and source code ownership transfer to your business on payment, along with documentation, hosting accounts and admin credentials. Without this, you remain dependent on the original developer.

Is SaaS cheaper than custom software?

For small teams with standard needs, yes. As user numbers and tool counts grow, per-user subscription fees often exceed the cost of a custom system within two to four years, especially when billed in US dollars and exposed to exchange rate changes.

Can custom software integrate with the SaaS tools we already use?

Usually, yes. Most established SaaS products offer APIs, so a custom system can sync with accounting, email and payroll tools. Check the API access each vendor allows on your plan, as some restrict integrations to higher-priced tiers.