Progress Invoicing — A Practical Guide for Small Businesses

TL;DR: Progress invoicing means billing your client in stages as work is completed, rather than waiting until the entire project is finished. It improves cash flow, reduces risk, and is standard practice in construction, consulting, and project-based services.

What Is Progress Invoicing?

Progress invoicing (also called milestone billing or staged billing) is when you invoice your client at agreed points during a project rather than at the end. Each invoice represents a portion of the total project value corresponding to work completed.

When to Use Progress Invoicing

Progress invoicing is appropriate when:

• The project spans weeks or months
• You have significant upfront costs (materials, labour)
• The total contract value is large enough that waiting until completion creates cash flow strain
• Industry practice supports staged billing (construction, consulting, design, IT)

How to Structure Progress Invoices

Percentage-Based

Invoice a fixed percentage at each stage. Example: 25% at commencement, 25% at halfway, 25% at practical completion, 25% at final handover.

Milestone-Based

Invoice when specific deliverables are completed. Example: invoice on completion of design phase, invoice on completion of build phase, invoice on testing sign-off.

Time-Based

Invoice at regular intervals (weekly, fortnightly, monthly) for work completed in that period. Common in consulting and professional services.

Progress Invoicing Best Practices

1. Define milestones in the contract — agree on invoicing stages before work begins.
2. Invoice promptly — as soon as a milestone is reached, send the invoice.
3. Include clear descriptions — detail what work the invoice covers.
4. Track progress vs billing — ensure invoicing stays aligned with actual completion.
5. Consider retention clauses — in construction, a 5–10% retention is common.

Progress Invoicing and Cash Flow

Progress invoicing improves cash flow by shortening the gap between work and payment. But even with staged billing, clients may still pay on 30–60 day terms. If you need cash faster, Fundtap lets you fund progress invoices as soon as they are issued — so you receive the advance within hours instead of waiting weeks.

See how Fundtap works →