Invoice Template for Web Developers
Development billing spans one-off builds, sprint-based engagements, and recurring maintenance, often for the same client in the same month. The invoices that get paid without questions are the ones that mirror how the work was scoped: milestone names from the proposal, sprint numbers, ticket references.
This template handles all three modes. Bill a site build by milestone, agency overflow by sprint, and care plans as a recurring line with the period stated. Keep third-party costs (hosting, plugins, APIs) as transparent pass-through lines.
What to include on this invoice
- Milestone or sprint reference matching your scope doc
- Hours × rate for time-and-materials work
- Third-party costs (hosting, licenses) at cost, itemized
- Maintenance period covered (e.g. "Care plan, June 2026")
- What triggers the invoice: delivery, sprint end, or date
- Your payment details and due date
Example line items
| Item | Description |
|---|---|
| Milestone 2: CMS build | Custom post types, editor training, staging deploy |
| Sprint 14 | 2-week sprint, agreed velocity, board reference |
| Annual hosting & licenses | Hosting, CDN, premium plugin renewals at cost |
| Maintenance plan | June 2026: updates, backups, uptime monitoring |
Billing tips
Invoice on staging delivery, not production launch, launches slip for reasons that aren’t yours.
Renew maintenance plans annually with a single invoice; monthly invoicing of small amounts wastes everyone’s time.
Reference commit ranges or ticket IDs for T&M work; it eliminates "what did we pay for" emails.
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Frequently asked questions
Should web developers bill hourly or fixed price?
Fixed price per milestone for defined builds, hourly for open-ended or legacy work. The decisive factor is who carries scope risk, price it accordingly and state the mode on the invoice.
How do I bill website maintenance?
As a recurring line naming the covered period and what is included (updates, backups, monitoring, response time). Annual billing with a small discount beats chasing twelve small payments.
Do I charge for hosting and plugins?
Pass them through at cost as separate lines, or bundle them into a care plan price, but never silently absorb them.
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