How Much Does Custom Software Cost? Pricing Guide & Cost Breakdown 2026

If you're researching the cost of custom software development, the honest answer is this: in 2026, most projects in Vietnam range from 208 million VND (for a lean MVP) up to several billion VND (for large enterprise systems). Your specific budget depends on the number of business processes to be handled, the number of interface screens, the complexity of system integrations, and the security standards involved.

In this article, FutureTech openly shares a detailed price list by project scale, breaks down the cost structure, compares pricing models, maps out delivery timelines and annual maintenance costs, and examines one practical reality: why choosing the cheapest software is usually the most expensive decision you can make.

Reference prices only; an accurate quote is provided after a business-process assessment.

How much does custom software cost by project scale?

In Vietnam in 2026, MVP/small-scale custom software starts from 208M VND, mid-sized projects range from 1.0–3.1B VND, and large systems start from 3.1–6.2B VND and up. Pricing is driven by the scope of business processes, not by the number of lines of code.

Below is a reference price list by scale so you can quickly gauge which category your project falls into:

Scale	Characteristics	Price range (VND)	Timeline
MVP / Small	1 core business flow, few screens, minimal third-party integration	From 208M VND	6–12 weeks
Mid-sized	Multiple modules, granular access control, basic API connections	1.0–3.1B VND	4–9 months
Large	Multiple departments, Big Data processing, high security, heavy load	3.1–6.2B VND+	Assessment required for a quote

For custom ERP software in particular, given the complexity of operational processes and the tight interconnection between departments, the investment breaks down as follows:

ERP scale	Scope	Price range (VND)	Timeline
Starter	3–5 core modules	From 880M VND	3–5 months
Standard	Full digitalization of all internal business operations	1.2–2.5B VND	Depends on scope
Advanced	Deep customization, integration with multiple systems	2.5–5B VND+	9–15 months

It's entirely normal in the IT industry for two products sharing the same "management software" label to differ in price by several times over. To pin down the most accurate figure for your business, you can consult our in-depth analysis in the detailed custom software pricing guide, or weigh the question of whether to buy off-the-shelf ERP or build your own before making an investment decision.

What does the cost of software development include?

The cost of completing a software project is far more than just the developers' programming effort. For a system to run smoothly and deliver real results, a proper quote must cover the full set of line items:

• Business-process assessment and analysis (BA): Clarifying real operational workflows, handling exceptional cases (edge cases), and establishing approval flows. This stage determines whether the software matches how your business actually operates, 100%.
• Solution and architecture design: Selecting the right technology stack, designing an optimized database structure, and ensuring scalability and information security.
• UI/UX design: Mapping user interaction flows and designing intuitive interfaces that help staff get up to speed and use the system easily.
• System development: The stage that turns the design blueprints into reality, including Backend and Frontend programming and API integrations.
• Quality assurance (QA/QC): Feature testing, security testing, and load-performance optimization before going live.
• Deployment and handover training: Installing the system on a cloud server, supporting the standardization and import of legacy data, and running training sessions for staff.
• Maintenance and technical support: Monitoring operations, fixing issues that arise, and updating the system on a regular basis.

One key difference in value lies here: when custom software is built the right way, you own 100% of your data and source code, it fits your business processes perfectly, and there is a clearly accountable partner for every line item. These are things that don't show up in the number but determine whether the software remains usable over the long term.

How do the different software pricing models differ?

There are currently three most common pricing models for software services, each addressing a distinct financial and risk-management challenge for your business:

• Fixed Price model: The business locks in the feature scope, investment cost, and delivery timeline right at contract signing. This model offers transparency, is easy to get budget approval for, and is extremely well-suited to projects with clear requirements such as MVPs or standalone modules. However, any change beyond the original scope requires signing a contract addendum.
• Time & Material model: Applying a fixed rate of around 520,000 VND/hour, the business pays based on the actual volume of work accepted and signed off. This is a flexible solution for projects still in the experimental phase, where features change continuously in response to market feedback. Note that the business needs to assign staff to track progress closely in order to control the budget.
• Dedicated Team model: Costs range from 75–200 million VND/person/month depending on the role (PM, BA, Developer, QA) and level of expertise. The business has its own technology team focused entirely on its product. This is the optimal model for companies that treat software as a long-term strategic asset and continuously upgrade it across multiple phases.

How long does it take to build custom software?

The time it takes to build a system is proportional to its scale and to how well the business has prepared its information:

• MVP version: Usually completed quickly, within 6–12 weeks.
• Mid-sized project: Requires roughly 4–9 months.
• ERP system: Takes 3–5 months for the starter version and extends to 9–15 months for advanced modules.

Project progress depends not only on the development team's capabilities, but also heavily on the business's speed in responding, approving design documents, and the quality of the data being migrated.

Practical advice from FutureTech: A business should start with a lean MVP that fully solves its single biggest operational pain point, and only then upgrade and expand based on real-world experience. This approach saves cash flow while minimizing deployment risk.

How much is annual software maintenance?

Annual software maintenance typically costs 15–20% of the original contract value. This is a mandatory item to build into your long-term budget, not an optional expense, because every piece of software needs updates, bug fixes, and adaptation to changing business processes.

This maintenance budget covers: fixing issues that surface during real operation, security updates, upgrading libraries and platforms, adjusting to changes in processes or legal regulations, and user support. A system that isn't maintained quickly becomes obsolete, grows vulnerable to security holes, and becomes increasingly difficult to fix.

When budgeting, calculate the total cost of ownership over three years rather than looking only at the initial build price. Software with a low development price but high maintenance costs, or one that has to be rewritten after a year, ends up far more expensive than the figure on the contract.

Is cheap software okay? Why does cheap turn out expensive?

Software that is too cheap usually isn't as cheap as you think, because the costs that were cut come back as hidden costs: technical debt, rewrites, data that's hard to extract, and no one accountable when things break. A fair price is one that accurately reflects the scope of work, not the lowest price.

When a quote is unusually low, something has usually been cut that you won't see right away:

• Technical debt: code written in a rush, with no architecture and no documentation. It works in the demo, but every new feature costs multiples more to add, until eventually it has to be rewritten from scratch.
• Skipping testing and security: the easiest part to cut to lower the price, but also the part that makes you pay the highest price when the system fails or leaks data while in operation.
• No thorough business-process assessment: the software that gets built doesn't match how you operate, leading to a stream of change requests or features that go unused.
• Data and source-code lock-in: you can't extract your data or you don't get the source code, leaving you permanently dependent on one vendor.
• No accountable partner: when the system breaks, no one steps up to provide warranty or support.

This doesn't mean "expensive equals good." It means: evaluate a quote based on a clearly defined scope of work, how well it fits your business processes, your ownership of the data and source code, and the commitment to accountability after handover. A lean operating model can deliver a competitive price while still preserving all of the above. Conversely, a low number that lacks these things is cost deferred, not cost saved.

If you're torn between buying off-the-shelf and building your own to optimize costs, our comparison of whether to buy off-the-shelf ERP or build your own analyzes each direction in depth. And if your budget is tight, you can look into free ERP software for businesses before considering an investment in building something new.

Does software pricing differ by industry?

Yes. Under the same "management software" label, the operational specifics of each industry directly determine the scope of business processes and the deployment budget.

For example, in retail and warehousing, the cost of building a warehouse management system (WMS) can start from 145 million VND for a basic package (1 physical warehouse, manual inbound-outbound-inventory management) and range from 145–760 million VND for standard or advanced packages (barcode-scanning integration, warehouse-layout management by shelf location, RFID connectivity).

That's why, when preparing a budget estimate, a business should benchmark directly against dedicated solutions in its own industry rather than applying a generic figure from another sector.

Frequently Asked Questions

What's the cheapest a simple piece of software costs? A small MVP that handles one core business flow in Vietnam typically starts from 20 million VND, with a delivery time of 6–12 weeks. FutureTech calculates the detailed cost based on the number of interface screens and the integration endpoints required.

Should I choose the fixed-price or the hourly model? If your business has clearly defined its feature requirements from the outset, choose the Fixed Price model to lock in the budget. If your project is in the experimental development phase and needs the flexibility to change with the market, the Time & Material model at a rate of 520,000 VND/hour will be the better fit.

Is maintenance mandatory? Yes. This is the minimum cost of keeping the system running, amounting to roughly 15–20% of the contract value per year. Skipping maintenance will cause the software to quickly become obsolete, run slowly, and face growing risks of security attacks.

Why do quotes vary so widely between development firms? The difference lies in the actual scope of service each firm commits to. Reputable providers include the cost of a thorough business-process assessment, a rigorous testing process, full handover of the source code, and a commitment to post-handover operational accountability. These are the very items that low-cost providers tend to cut in order to minimize costs on paper.

Do I own the source code and data? With projects delivered to standard at FutureTech, the client owns 100% of the original source code and database after project acceptance. This gives the business the freedom to run, upgrade, or switch infrastructure providers on its own down the line.

Reference prices only; an accurate quote is provided after a business-process assessment.