Fixed Price, Time & Material, or Dedicated Team? Choosing a Software Pricing Model

When hiring a partner to build software, many business owners fixate on a single question: "How much does it cost?" In reality, the make-or-break question that decides whether a project succeeds or fails is: "Which model is the price based on?"

For the same business problem, three pricing models — Fixed Price, Time & Material, and Dedicated Team — will produce three completely different numbers. More importantly, they represent three ways of operating, three levels of risk, and three degrees of flexibility. Choosing the wrong model doesn't just waste your cash flow needlessly; it can turn your project into a quagmire of delays, heated disputes over scope, or — worst of all — a product nobody wants to use.

This article dissects the true nature of each model, pinpoints exactly when to use which one, and shows you how to sidestep the classic traps of contract negotiation.

Fixed Price: Lock In Your Budget, No Overruns

Fixed Price is the model where you pay a single "all-inclusive" price for the entire scope of work that both parties have framed and agreed on in writing beforehand. It's the absolutely safe choice when your business requirements are already crystal clear and you have no intention of changing them.

The vendor commits to a hard number — say, 1.5B VND for a warehouse management system — and in return, you must spell out every button, every data flow, and every delivery milestone in detail right from the starting line.

This model is the perfect fit when:

• You already hold an exceptionally sharp business requirements document (SRS) and know exactly which modules you need (for example, a Starter ERP package of 3-5 modules, with a budget from 880M VND).
• The project has clearly limited boundaries, a short lifecycle, and little chance of a mid-course change of direction (for example, an MVP pilot built in 6-12 weeks).
• Senior leadership demands extremely tight budget control and won't accept any risk of cost overruns.

The fatal weakness of Fixed Price is its rigidity. Any idea for a change or an extra feature outside the original contract must go through the tiresome "Change Request" process, usually accompanied by expensive surcharges and schedule disruptions. What's more, if your initial requirements are still fuzzy, your technology partner is forced to pad the contract by 20-30% to offset the risk — meaning you end up paying for your own uncertainty.

Time & Material (T&M): Pay by the Hour, Total Flexibility

Time & Material (T&M) is a payment model based on the actual programming hours incurred (in the Vietnamese market, this rate typically hovers around 520,000 VND/hour). It's the perfect antidote when project requirements haven't fully taken shape yet or when you need to keep steering the product in response to the market.

Instead of committing a huge lump sum upfront, you pay month by month based on transparent timesheets and reports of the work your engineering team actually delivers.

T&M is the smart move when:

• The project is in the "Discovery" phase, where features may be torn down and rebuilt continuously based on feedback from internal departments or customers.
• The company follows an Agile/Scrum development process, prioritizing getting features to market fast (rolling out sprint by sprint) and pivoting continuously.
• You want the freedom to expand or shrink the feature scope without getting stuck in the heavy Change Request paperwork of Fixed Price.

The upside is unrivaled transparency and flexibility — you only pay for what actually gets coded, and you have full authority to reorder priorities. But the downside is that there is no absolute budget "ceiling." If you (or your partner) manage the project loosely, lack transparent time reporting, or fail to keep a tight grip on the feature backlog, costs will bleed away and far exceed your initial expectations. T&M only truly unleashes its power when paired with a ruthless, transparent progress-reporting mechanism.

Dedicated Team: Your Extended IT Branch

A Dedicated Team is the model where you hire an entire team of staff (developers, testers, a project manager (PM), and more) working long-term and dedicated 100% to your product alone. The cost typically ranges from 75-200M VND/person/month, depending on how senior and experienced the role is.

Unlike Fixed Price and T&M (which are essentially "finish the project and part ways" models), a Dedicated Team works exactly like expanding your in-house IT department — except you offload the burden of recruitment, insurance, and office space onto the partner.

This model is a strategic weapon when:

• Your product (for example, a core SaaS platform, or an app with a rapidly growing user base) needs to be developed, optimized, and maintained continuously over many years.
• You need a coding team that deeply absorbs your company's business and stays committed for the long haul to protect your technological know-how, rather than finishing the job and walking away.
• You have a clear product direction but lack in-house technical capability and don't want to spend half a year just recruiting people.

The definitive advantage is long-term commitment. The longer the team works, the deeper its understanding of the system, saving you the cost of "re-training from scratch" that comes with jumping from one partner to another. However, the drawback is that it requires your company to have an in-house Product Owner/PM skilled enough to "assign work" and coordinate. Without someone at the helm, you're paying a fixed monthly salary to an army whose product output crawls along.

A Quick Side-by-Side of the 3 Pricing Models

Choosing the right model depends on how well-defined your requirements are, and on which party you want to "push" the risk of schedule slippage and cost overruns onto.

Criteria	Fixed Price	Time & Material (T&M)	Dedicated Team
Requirement clarity	Must be sharp, 100% framed	Vague, adjusted as you go	Clear vision, continuous long-term development
Reference unit price (VND)	Single all-inclusive lump sum	~520,000 VND/hour	75-200M VND/person/month
Who bears the risk (on changes)	Partner (so they usually pad the price)	Customer (pays for extra hours)	Customer (must assign work effectively)
Timeline fit	Short to medium term	Short to medium term (running Agile)	Long-term, open-ended
Management capability required (from you)	Low (just await acceptance)	Medium (approve progress weekly)	Very High (assign work daily)

Can You Blend the Models Within a Single Project?

Absolutely YES. In fact, this is a top-tier tactic applied to nearly every mid-size and large project: use Fixed Price for the "foundation-building" phase (when requirements are locked down), then transition smoothly to T&M or a Dedicated Team for the feature "expansion" phase.

A real-world example: you sign a 1B VND Fixed Price contract to complete an MVP (the core version) and launch it to market. Once the MVP is running smoothly and customers start sending feedback demanding countless new features, you immediately sign an addendum to switch to a T&M or Dedicated Team model. At that point, you're free to turn the wheel and adjust features to the market without incurring contract penalties.

This "blended" approach lets you lock down budget risk at the outset while maximizing flexibility during the phase of red-hot growth.

The Price You Pay for Choosing the Wrong Pricing Model

Choosing the wrong model pushes you toward one of two grim outcomes: either you overpay for a risk "padding" you never use (the Fixed Price mistake), or you watch your budget evaporate with no brakes (the T&M mistake).

If you force a project with loose requirements into a Fixed Price contract, the partner is bound to inflate the quote by 30% to protect itself. And when you want to change a single button, both sides get bogged down in time-consuming legal arguments. On the flip side, if you choose T&M but no one at your company checks the weekly coding-hour reports, costs will pour away like a waterfall while the product stays stuck in place.

A "hidden" cost that few executives notice: no matter which model you choose, once the software goes live, you must still budget for an annual maintenance fee (roughly 15-20% of the project value). This sum needs to go straight into your budget balance sheet from the day you negotiate the contract — not be discovered in a panic only when the software breaks.

Frequently Asked Questions

Of the three models, which one saves the company the most money?

No model is "cheap" in absolute terms. The actual cost is determined by how sharply defined your business flows are and by your company's project-management capability. The most economical model is the one that eliminates surprise surcharges and junk features nobody uses.

Which model should a small business choose when it's adopting a software system for the first time?

If you've already mapped out your business flows on paper, Fixed Price is the safest lifeline to keep you from "overspending." But if all you have in mind is a "vague general idea," ask your partner to come survey your business processes before you sign any contract with your eyes closed.

Can I "switch gears" and change models midway while the project is running?

Yes. Plenty of businesses lock in Fixed Price at first and then move to T&M in the second phase. But remember: this "conversion clause" must be negotiated and spelled out clearly in the contract from day one.

If I need a project done quickly within 2 months, is a Dedicated Team a good fit?

Absolutely not. A Dedicated Team is a "long-term partner"; it needs time to absorb the business and hit its stride. For a lightning-fast project, Fixed Price or T&M will chase down the deadline and save your budget far more effectively.

What signs show that my requirements are "ripe" enough to confidently sign a Fixed Price contract?

If you can throw onto the table a document that details every screen, every button, the journey of each user type, and clear acceptance criteria (without words like "similar to" or "something like that") — then you're ready for Fixed Price. If not, you need an in-depth business survey session first.

Still wrestling with which payment model fits your project best to optimize your capital flow? The FutureTech (ftech.ltd) team is ready to survey your business processes directly, completely free of charge, and give you the fairest, most transparent pricing-model advice. (Prices are for reference; an accurate quote follows the business survey.)