A cleaner way to bill clients for software, websites, and technical services.
Developer invoices need to explain technical work in client-friendly language while still separating milestones, hourly work, support, hosting, and integrations.
Developers can invoice for project phases, maintenance retainers, bug fixes, API work, and delivery milestones without rebuilding documents every time.
Development work is billed against something that changes shape while it is being built. The invoice therefore has to distinguish between what was agreed, what was added, and what was fixed, because the client's view of which is which is often not the same as yours.
The second complication is recurring cost. Hosting, licences, domains, and third-party services are frequently paid by the developer and recharged, and clients need those separated from the work itself in order to budget them properly.
| Invoice line item | Description | Example amount |
|---|---|---|
| Website build milestone | Frontend and CMS implementation for approved project phase. | $2,500.00 |
| Bug fixes | Hourly issue resolution and QA support. | $480.00 |
| Hosting setup | Production deployment and environment configuration. | $300.00 |
| Maintenance retainer | Monthly support for updates, monitoring, and small changes. | $750.00 |
| API integration | Integration with third-party service or internal system. | $1,100.00 |
Bill change requests separately and reference the approval. On fixed-price work, unbilled scope changes are where the margin goes, and they are almost impossible to recover once the project is delivered.
Do not bill for fixing your own defects, and say so on the invoice where relevant. Making the distinction explicit between a bug in delivered work and a change to the specification prevents the client assuming the worst about every maintenance line.
Recharge third-party costs on a schedule the client can predict, and consider whether they should be in the client's own name. Developers who put client hosting on their own card end up financing it, and end up owning a dependency neither side wanted.
Fixed-price work absorbs changes silently unless each is invoiced with its approval referenced.
Clients who cannot tell a defect fix from a new feature assume they are paying for your mistakes.
Paying client infrastructure on your own account creates both a debt and a dependency.
Retainer support that is never itemised expands until it is the whole retainer.
Create 5 invoices every month for free, then upgrade as you grow.