# Custom software vs SaaS: which fits your business?

> Custom software or an off-the-shelf SaaS tool? Compare costs, ownership, lock-in and the new EU Data Act, and find out which option suits your business.

- URL: https://www.snoerendevelopment.nl/en/blog/custom-software-vs-saas
- Language: en-US
- Author: Michael Snoeren (Snoeren Development)
- Published: 2026-11-01

Custom software or an off-the-shelf SaaS product: the right choice comes down to one question. Is the process you want to support standard, or is it what sets your business apart? For accounting, email and HR, SaaS almost always wins. For the process that makes you money, or a platform that is your product, custom software usually pays off over time.

**In short**

- **SaaS** is quick and predictable to start with, but you pay per user or per month for as long as you use it, and you adapt your process to the software.
- **Custom software** needs an upfront investment, but the software, the code and the data are yours, and the software adapts to your process.
- **Rule of thumb:** SaaS for whatever works the same in every business, custom for whatever makes you different.
- **Lock-in is shrinking:** the EU Data Act has applied since 12 September 2025, and from 12 January 2027 cloud providers can no longer charge switching fees.
- **Hybrid often works best:** a custom platform that connects to your existing SaaS tools through APIs.

## What is the difference between custom software and SaaS?

**SaaS** (Software as a Service) is software you rent. The vendor builds one product for thousands of customers, hosts it and maintains it. You pay a subscription and log in through your browser. Think of HubSpot, Shopify, Notion or Xero.

**Custom software** is built specifically for your business. You decide which features it has, how the workflow runs and what it looks like. You own the source code and choose where it runs. I build custom software with Laravel, an open-source PHP framework with no licence fees.

So the difference isn't just price. It's about who decides how the software works: the vendor, or you.

## When is an off-the-shelf SaaS product the best choice?

SaaS is the sensible choice when your process isn't unique. Every company does its bookkeeping by the same rules, and a good accounting package knows those rules better than any custom system ever will. The same goes for email, calendars, payroll and a standard online shop.

Go for SaaS when:

- the product covers 80 to 90 percent of your needs out of the box;
- you want to be up and running in days rather than months;
- the functionality gives you no competitive edge;
- you lack the budget or time to have software developed and maintained.

The biggest advantage is predictability. You know your monthly bill, and the vendor takes care of updates, security and hosting.

## When does it pay to have custom software built?

Custom software becomes worth considering as soon as you notice your team working around the software. I usually see three signs:

1. **Spreadsheets as glue.** People export data from one tool, fix it up in Excel and import it into the next. Every manual step costs time and introduces errors.
2. **The process bends to the software.** You work a certain way because the tool allows nothing else, not because it's the best way.
3. **The platform is your product.** If you're building a marketplace, a customer portal or a SaaS product you sell yourself, custom isn't a choice, it's a requirement. You can't rent your own product.

An example from my own work is [Speelgoedruilen.nl](/en/blog/building-speelgoedruilen-with-laravel), a Dutch toy swap platform. No off-the-shelf product combines swap requests, real-time chat, AI photo checks and local pages per town. Building it custom let me deliver exactly what the platform needs, on top of standard building blocks from the Laravel ecosystem.

## How do the costs of custom software and SaaS compare?

A fair comparison looks at the total cost over several years, not just the first invoice:

| Cost item | SaaS | Custom |
| --- | --- | --- |
| Getting started | Low: a subscription and setup | Higher: design and development |
| Monthly | Per user or per plan, grows as you grow | Hosting and maintenance, mostly independent of user count |
| Changes | Only within what the vendor allows | Anything is possible, you pay per extension |
| Ownership | You rent, even after years | Code and data are yours |

Here's a worked example with round numbers. A company with 25 employees uses a SaaS tool at €40 per user per month. That's €12,000 a year and €60,000 after five years, and none of it is yours. If the team grows to 50, that figure doubles. A custom system with a similar scope costs more upfront, but its monthly hosting and maintenance costs barely rise with the number of users.

So compare costs over three to five years, including the hidden cost of manual work and workarounds.

## What about ownership, lock-in and the EU Data Act?

With SaaS, your data lives with the vendor. If they raise prices, drop a feature or go out of business, you have little say.

That is changing. Since 12 September 2025, the [EU Data Act](https://digital-strategy.ec.europa.eu/en/policies/data-act) applies across the EU. Cloud providers must let you switch to another provider: with a notice period of no more than two months, a transition period of normally no more than 30 days, and an export of your data in a commonly used, machine-readable format. From **12 January 2027**, they may no longer charge switching fees for it. In the Netherlands, the [ACM](https://www.acm.nl/en) supervises these rules.

That makes SaaS less risky, but it doesn't solve everything. Taking your data with you is not the same as taking your way of working with you. Your automations, reports and team habits stay tied to the product.

Custom software doesn't have that problem. With Laravel you have the source code, the application runs with a hosting provider of your choice, for example via Laravel Cloud or Laravel Forge, and another Laravel developer can take over the work if needed. Laravel is one of the most popular PHP frameworks, so those developers are easy to find.

## What do you need to arrange for maintenance and security?

The biggest risk of custom software isn't building it, it's maintaining it afterwards. Software that isn't updated becomes insecure within a few years.

Laravel has a clear [support policy](https://laravel.com/docs/13.x/releases#support-policy): every major version gets 18 months of bug fixes and 2 years of security fixes. Laravel 13 was released on 17 March 2026 and receives security fixes until 17 March 2028. Laravel 12 receives security fixes until 24 February 2027. Upgrading to a new major version is usually a small job, as long as you keep up every year.

So agree upfront on:

- who updates Laravel, PHP and packages, and how often;
- monitoring and backups;
- how quickly a critical security issue gets fixed;
- where the source code lives, so you always have access.

With SaaS, the vendor handles this. With custom software, it belongs in your budget, just like hosting.

## Can you combine custom software and SaaS?

Yes, and in practice that's often the best solution. You build custom software for the part that sets you apart and connect it to off-the-shelf tools for everything else through APIs. Payments run through Mollie or Stripe, email through a mail service, and your bookkeeping stays in your accounting package. The custom platform makes sure data flows between those systems automatically.

That way you benefit from mature existing products without forcing your own process into a straitjacket. An MVP is a good way to start: build the core first, connect the rest, and expand based on what users actually need.

## Frequently asked questions

### Is custom software more expensive than SaaS?

Upfront, yes; over time, not necessarily. SaaS charges per user or per month for as long as you use it, while custom software is mostly a one-off investment plus maintenance. Compare the total cost over three to five years, including the growth of your team.

### How long does it take to build custom software?

It depends on the scope. A focused MVP with the core functionality can go live within a few weeks to a few months, after which you expand step by step. A large platform with many integrations takes longer.

### Can I move from a SaaS product to custom software?

Yes. Under the EU Data Act, cloud providers must let you export your data in a machine-readable format, and from 12 January 2027 without switching fees. That data can be imported into a custom system, gradually if needed while the old product is still running.

## Torn between custom software and SaaS?

I'm happy to think it through with you, even if the answer turns out to be an off-the-shelf product. From Oosterhout in the Netherlands, I build custom Laravel platforms for clients in the Netherlands and beyond. Take a look at [SaaS platform development](/en/services/saas-platform-development), [MVP development](/en/services/mvp-development) or [technical advice](/en/services/advice), or [get in touch](/en/contact) for a no-obligation chat.