Invoice for the full product design process, from user research and wireframes to polished UI. Get paid on time with Tidybill.
A UI/UX designer invoice covers the end-to-end product design process, blending user experience research and strategy with visual interface design. A UI/UX designer is often a generalist who handles discovery workshops, user flows, wireframes, high-fidelity mockups, and developer handoff in a single engagement. This makes invoicing slightly more complex than specialising in either discipline alone, because one project can encompass both strategic consulting work and pixel-level design output. Clients benefit from a single designer covering both disciplines, which typically results in more coherent products. Invoices should clearly distinguish research and strategy phases from visual design phases, as these represent different types of value and may have different billing rates.
| Service | Typical Rate | Unit |
|---|---|---|
| Discovery & Research Phase | £800 - £2,500 | per project |
| Wireframing & User Flows | £600 - £1,800 | per project |
| High-Fidelity UI Design | £150 - £400 | per screen |
| Usability Testing Round | £600 - £1,500 | per round |
| Design System Setup | £1,000 - £3,000 | per project |
| Ongoing Product Design (retainer) | £600 - £1,500 | per week |
For full product design engagements, invoice by phase: a deposit before discovery begins, payment after wireframe approval, and the balance on final handoff. This aligns invoicing with client decision points and gives both parties clear milestones to work towards. For ongoing product design support, a weekly or monthly retainer works well. Invoice at the start of each period with a brief summary of planned deliverables for that sprint or month. Net 14 to Net 30 is standard.