Custom Software Development Cost 2026: What You'll Pay and Why

"We need some software, how much will it cost?" is a lot like asking "How much does it cost to build a house?" Custom software development cost varies significantly depending on what you are building, how many people will use it and which other systems it needs to talk to. That is why quotes from two suppliers can look wildly different, and that is often perfectly normal. The real question is whether both quotes describe the same scope.

In this article we break down every item that makes up the price of having software built. You will find broad indicative ranges by project type, the setup and maintenance costs people tend to overlook, a comparison with off-the-shelf subscriptions and the questions to ask when requesting a quote. Our examples come from the two sectors we work with most: furniture manufacturers in İnegöl (Türkiye's furniture production hub near Bursa) and hotels.

Our goal is not to hand you a price list. It is to make sure you know what to challenge when you sit down at the table.

What drives custom software development cost? 6 key factors

Behind every software quote there is really an estimate of hours: analysis, design, development, testing and rollout. The six factors below directly increase or reduce those hours.

1. Number of modules

Customer records, quotes, orders, stock, production planning, reporting… Each module means separate screens, separate business rules and separate testing. A company that says "just the quoting part for now" and one that says "everything from quote to dispatch" cannot have the same budget.

2. User roles and permissions

A system where everyone sees everything is relatively simple. If sales reps should only see their own customers, accounts only invoices and dealers only their own orders, a permissions layer has to be built. The more roles you have, the longer both development and testing take.

3. Integrations: e-invoicing, accounting, marketplaces

This is usually the item that causes the biggest cost surprises. If you sell in Türkiye, connecting to an e-Invoice/e-Archive provider, exchanging data with accounting software such as Logo, Mikro or Paraşüt, and pulling orders from marketplaces such as Trendyol or Hepsiburada are each separate work packages. Other markets have their own equivalents. If the other side's API is well documented, work moves quickly; if not, it takes longer. For more on the marketplace side, see our marketplace integration article.

4. Mobile requirements

For most business software, a mobile-friendly web interface is enough and adds limited cost. If your field team needs to work offline, scan barcodes or receive notifications, a separate mobile app comes into play. Including the App Store and Google Play processes, that is a significant extra item.

5. AI features

Generating a draft quote from an incoming email, writing product descriptions or adding an assistant that chats with customers is now possible. But AI brings both development cost and usage-based service fees. Add it when it solves a clear business problem, not because it would be "nice to have".

6. Maintenance and support scope

Software is not finished on delivery day. Bug fixes, security updates, small change requests and backups all need ongoing attention. If the quote does not state how long maintenance is included and what it covers, ask.

Custom software development cost by project type in 2026

The table below shows broad indicative ranges commonly seen for SME-scale projects in the Turkish market. Because of exchange rates, team structure and differences in scope, real quotes may come in below or above these ranges.

The ranges are this wide because of the six factors above. For example, the quoting module for a sofa manufacturer in İnegöl can become far more complex than an ordinary price list because of fabric options, colours and size variations. For detail on each project type, our what is CRM article, quoting software guide, inventory management software article and B2B dealer portal guide will help.

Overlooked costs: setup, hosting and annual maintenance

The figure on a quote is usually just the development fee. To build a realistic budget, factor in these items too:

• Servers and hosting: Cloud server, database, backup storage and SSL. This grows as users and data grow.
• Third-party services: E-invoicing providers, SMS bundles, email delivery services, maps or AI APIs may be billed by usage.
• Data migration: Cleaning years of customer and product data from Excel files and moving it into the new system can be a small project on its own.
• Training and rollout: Training, user guides and intensive support in the first weeks so the team actually starts using the system.
• Annual maintenance: Security updates, bug fixes, small improvements. Usually agreed as a fixed monthly or annual fee.
• Change requests: Out-of-scope requests are priced separately. The clearer your initial analysis, the fewer surprises later.

Off-the-shelf or custom software? A 3-year cost comparison

Off-the-shelf packages run on a monthly per-user subscription, so the starting cost is low. With custom software, you make a larger upfront investment and afterwards pay only for maintenance and hosting. To see which makes sense, you need to calculate three years, not one.

The table below is entirely hypothetical. It is designed so you can plug in your own figures and run your own calculation.

The general pattern: if you have few users and a standard workflow, an off-the-shelf package is more economical. As your user count rises, your processes become sector-specific and you notice you are forcing your team to fit the package, custom software starts to pull ahead over three years.

Take a hotel. A standard front-office system manages reservations, but if you want agency contracts, group quotes and enquiries from your website on a single screen, the package may fall short. In that case the hotel usually keeps its front-office system and commissions a small custom module for the missing part. For a wider view, we discuss the pros and cons in our ready-made vs custom solution article.

How to get a software development quote: 10 questions to ask

Before requesting quotes, write your own requirements list: Who will use it, how do you handle each task today, and which programs does it need to talk to? Then ask every supplier you speak to these questions:

1. Which modules and screens does the quote cover, and what is out of scope?
2. Is the price fixed or hourly? How are scope changes priced?
3. Which integrations are included, and who pays the third-party fees?
4. Who will hold the source code, database and server access?
5. How many phases does the project have, and which deliverables are payments tied to?
6. How are we involved in testing, and what are the acceptance criteria?
7. How long is the free bug-fix period after delivery?
8. What are the annual maintenance and hosting fees, and what do they cover?
9. Where is our data stored and how is it backed up? What measures are in place for data protection compliance?
10. Can you show us a previous project of similar scale?

A good software team asks you more questions than it gives you prices in the first meeting. Be cautious with a quote that names a figure without asking questions.

Keeping the budget under control with an MVP and phased development

The most effective way to control your budget is not to build everything at once. An MVP (minimum viable product) is the smallest working version that genuinely makes your work easier. You build that first, watch how your team uses it, then grow it based on real needs.

Take a bedroom furniture manufacturer in İnegöl. In the first phase it could commission a simple portal where dealers can view the product catalogue and place orders. A few months later come dealer-specific pricing and account balance screens, then automatic integration with the accounting software, and finally a stock module linked to production planning. Each phase keeps the investment small, and each next step is based on usage data rather than guesswork.

The same approach works for hotels. You might map out a roadmap that starts with a quote screen for group and event enquiries, then adds agency management, and then has enquiries from the AI assistant on the hotel website flow into the system automatically.

• Advantage: Payments are spread out, the risk of spending on the wrong features drops, and the team adapts to the system gradually.
• Watch out for: The first version's foundations must be built to scale. Otherwise you may need to rewrite it from scratch in phase two.

How to plan your budget for custom business software

A practical roadmap could look like this:

1. Write down the problem: Which task wastes the most time today? Quotes tracked in Excel, or dealer orders taken by phone?
2. Prioritise: Split the list into "must have", "phase two" and "maybe".
3. Run a three-year calculation: Add up development, hosting, maintenance and third-party services, and put it side by side with an off-the-shelf subscription.
4. Ask for phased quotes: Get separate prices from suppliers for the MVP and later phases.
5. Nail down the contract: Scope, delivery dates, code ownership and maintenance terms should all be in writing.

At Fietto Creative, we usually start this process with a discovery call, map your workflow together and define the MVP scope. You can see the kinds of projects we build and how we work on our custom software service page.

Planned properly, custom software stops being just an expense and becomes a tool that fits your business processes. The key is to look past the single figure on a quote to the clarity of the scope and the three-year total. Take your requirements list and the questions in this article to the table, and you will be able to compare quotes far more reliably.

Frequently asked questions