15% — accepted requirements, architecture notes and delivery plan.
Software Development Payment Example
A software development milestone agreement converts technical progress into behavior the client can test.
Software development milestone agreement terms should release escrow for demonstrable behavior rather than unverifiable percentages of completion. Requirements, core workflows, integrations, acceptance testing, deployment materials and repository handoff each need defined evidence.
Example payment schedule
Divide software development into independently valuable stages.
Percentages are examples, not universal rules. Assign value according to the effort, risk and usable work delivered at each stage.
30% — working core workflow in the agreed test environment.
35% — remaining scoped features, integrations and documented tests.
20% — accepted defect fixes, deployment materials and repository handoff.
Define the deliverables
Every payment stage needs a concrete output.
Name the files, functions, access or evidence the provider must submit. Activity is not a deliverable unless the agreement also defines the resulting output.
Describe user roles, workflows, features and excluded behavior.
Name the supported environment, dependencies and external services.
Define repository access, documentation and deployment deliverables.
Provide test accounts, fixtures or sample data needed for review.
Acceptance and revisions
Review the funded scope instead of reopening the brief.
Acceptance criteria should let the client identify completion without relying on taste alone. Included revisions refine the agreed direction; new objectives require new scope.
Use feature-level tests instead of a subjective percentage complete.
Classify failures against requirements as defects.
Set severity rules and a finite acceptance-testing window.
Treat new features, platforms and integrations as added scope.
Control project risk
Write failure states before the project begins.
Define input deadlines, review periods, extension rules and settlement outcomes. A milestone schedule works only when both parties understand what happens after delivery, delay or cancellation.
Record assumptions about APIs, libraries and third-party availability.
Define security review responsibility and prohibited production data.
State maintenance and warranty obligations after final acceptance.
Preserve payment for accepted stages if later optional work is cancelled.
Requirements baseline
Architecture should serve written behavior—not become a substitute for it.
Identify user roles, workflows, feature boundaries, supported environments, dependencies and excluded behavior. Record assumptions about APIs and libraries. The software development milestone agreement should state who supplies credentials, test data and infrastructure before development clocks begin.
Define roles and workflows.
Name supported environments.
Record external dependencies.
Assign credentials and infrastructure.
Working increments
Fund vertical behavior the client can operate in a test environment.
A working authentication or checkout flow provides stronger evidence than files labeled 70% complete. Demonstrate success, validation and error states with agreed fixtures. Attach build or deployment references to the contract and settle accepted increments without waiting for optional future features.
Demonstrate end-to-end behavior.
Test success and failure states.
Use agreed sample data.
Settle independently valuable increments.
Defect control
A bug violates agreed behavior; a new feature changes the agreement.
Classify severity, reproduction evidence and response obligations. Use a finite acceptance-testing window and preserve the original criteria during fixes. New platforms, integrations or workflows become added scope. This distinction helps prevent scope creep while holding the developer accountable for actual defects.
Tie bugs to requirements.
Define severity and reproduction steps.
Limit acceptance testing.
Price new behavior separately.
Security and handoff
Final settlement should leave the client able to control what they purchased.
Define security-review responsibility, prohibited production data, secret handling and dependency disclosure. List repository access, source code, environment instructions, documentation, deployment artifacts and license restrictions. State maintenance or warranty limits after acceptance so ongoing support does not remain an invisible condition on the final escrow release.
Keep secrets out of code and chat.
Transfer repository and documentation.
Disclose licenses and dependencies.
Separate maintenance from final acceptance.
Technical evidence
Require artifacts that survive a demo and help the next operator continue.
A polished screen share can hide hard-coded data, missing error handling or an environment nobody else can reproduce. Pair each demonstration with the relevant commit, build, test output and setup notes. Confirm the client can access the repository and test environment before approval. For integrations, retain request and response evidence without exposing secrets. A software development milestone agreement should reward maintainable transfer, not theatrical progress. The evidence level can scale with project size, but it must let another qualified person distinguish working scoped software from a prototype whose critical path still depends on the original developer’s laptop.
Connect demos to versioned code.
Preserve test and setup evidence.
Protect secrets in logs.
Test transferability before approval.
Frequently asked questions
Software Development Milestone Agreement: Fund Working Behavior, Not ‘Almost Finished’ Code
How should software development milestones be structured?
Use reviewable stages such as accepted requirements, a working core workflow, completed scoped features and tested handoff.
What are software acceptance criteria?
They are observable behaviors, supported environments, integration results, tests and handoff materials used to evaluate delivery.
Is a bug fix a new milestone?
A failure to meet an existing requirement is generally a defect; a new behavior or feature is additional scope.
Should the final milestone include source code?
If source code and repository access are part of the deal, list them explicitly in the final handoff criteria.
Review Contract Lifecycle →See the commercial solution and payment workflow.Read More Payment Guides →Explore crypto escrow, milestone contracts and safer internet work.Follow the Money →Understand verification, release, refunds and fee routing.Review the Risks →Understand what payment infrastructure can and cannot protect.
Rules before risk
Structure the agreement before money or work changes hands.
Create a wallet-based contract with defined milestones, deadlines, review rules and XRP settlement instructions.