Software Development Project Budget Guide
Compare SaaS, custom development, and in-house teams using consistent demand assumptions and a reproducible 36-month total-cost model.
Software budgets should cover the product's full operating life, not just the first build. Wavesteam estimates design and engineering together with hosting, maintenance, third-party services, compliance work, and a risk reserve. The client supplies realistic usage, budget limits, and commercial priorities; we turn those facts into a recommended first release and an explainable cost model.
Start with three scenarios
For a useful estimate, model a baseline month, a growth month, and a foreseeable peak. Each scenario should state user volume, transactions, storage, traffic, service hours, launch regions, recovery expectations, and integrations. The proposal should then identify:
- fixed implementation and delivery costs;
- recurring operations and support;
- metered cloud and third-party charges;
- one-off account, certification, migration, or compliance work;
- the threshold that triggers expansion or a new estimate.
Published figures are orientation only. A formal Wavesteam proposal records quantities, assumptions, pricing date, billing owner, tax treatment, and overage rules. Supplier charges are kept separate from our service fees.
Typical cost groups
| Cost group | What it usually covers | Main cost drivers |
|---|---|---|
| Product delivery | Discovery, UX, engineering, testing, deployment, and handover | Scope, integrations, platforms, quality requirements, and schedule |
| Maintenance | Monitoring, incident response, security patches, release support, and routine optimization | System criticality, service hours, architecture, and change volume |
| Cloud infrastructure | Compute, database, cache, storage, backups, logs, and network delivery | Peak load, data volume, regions, retention, and resilience target |
| Third-party services | AI models, messaging, maps, identity checks, OCR, payment, and logistics APIs | Actual calls, tokens, messages, transactions, or traffic |
| Security and compliance | Security controls, audits, assessments, licenses, and specialist advice | Industry, data sensitivity, launch market, and certification scope |
Custom software projects generally start from CNY 50,000. Managed cloud packages start around CNY 6,600 per year, and annual maintenance from the second year normally starts at 10% of the initial development fee. These are entry points, not binding quotes.
Costs that should not be hidden
Cloud capacity is more than a virtual server. Production systems may require managed databases, backups, object storage, cache, CDN, observability, security controls, domain names, and certificates. Global delivery or strict recovery targets can add regions and redundancy.
Usage-based services can become the largest variable cost. Estimate SMS by destination, payment by transaction mix, AI by input and output usage, maps and OCR by calls, and media by storage, transformation, and bandwidth. Unit prices change frequently, so the budget should link to the supplier's current price page rather than preserve an old model price as fact.
Store commissions and payment processing must be modelled according to what is sold. Digital content, physical goods, subscriptions, and offline services can follow different platform and tax rules. Confirm the current policy in every target market before choosing the payment architecture.
Who should own supplier accounts
Where practical, cloud, store, payment, messaging, and API accounts should belong to the client and be paid directly. Wavesteam can configure them under delegated access. This makes invoices auditable, avoids an unnecessary markup, and allows the client to change vendors or service providers later.
A budget is ready when
- the first-release scope and exclusions are explicit;
- baseline, growth, and peak assumptions are documented;
- recurring and usage-based costs are separated;
- security, backup, acceptance, and handover have not been removed to create an artificially low price;
- the client knows which decisions can be deferred and which would create expensive rework;
- expansion and re-estimation triggers have owners.
Wavesteam recommends the smallest plan that can meet the agreed quality and risk threshold. If the available budget cannot support that threshold, we reduce or stage the scope instead of hiding necessary operating costs.
This guide is for general planning only. Verify current requirements and supplier terms before implementation.