Free Invoice Generator for Consultants
Professional invoicing for management consultants, IT advisors, business analysts, and independent specialists. Bill for day rates, retainers, project fees, and expense reimbursements.
Your Business Details
Client Details
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| Description | Qty | Unit Price | Amount | |
|---|---|---|---|---|
$ | $0.00 |
What to Include on a Consulting Invoice
How to Bill Clients as a Consultant: 4 Models
Daily Rate Billing
Days worked × day rate. Clear and simple. Most common for management consultants. Include a brief description of deliverables for each day charged.
Hourly Rate Billing
Hours worked × hourly rate. More granular than day rates. Best for variable-scope engagements where work volume is unpredictable.
Project / Fixed Fee
Agreed total for defined deliverables. Invoice on completion or at milestones. Requires a clear scope document to avoid scope creep.
Retainer Billing
Monthly fixed fee for ongoing availability and advisory access. Set up recurring invoices. Most profitable billing model for established consultants.
Frequently Asked Questions
Can I invoice a company as a sole consultant without a limited company?▼
Yes. Invoice in your personal name or trading name. Many independent consultants operate successfully without a registered company.
How do I invoice for a retainer arrangement?▼
Set a recurring monthly invoice for the agreed retainer amount. Use the description: "Monthly Consulting Retainer — [Month] 2026 — [scope of availability]".
Should I charge VAT on consulting invoices?▼
This depends on your country and revenue threshold. Consult a tax professional — requirements vary significantly between the UK, EU, US, and other markets.
How do I handle expense reimbursements on a consulting invoice?▼
Add expenses as separate line items below your consulting fees: 'Expense: London–Edinburgh (return train) — 15 April 2026' with the cost. Keep receipts for all claimed expenses.
What is a day rate and how do I invoice it?▼
A day rate is a fixed fee per day of consulting work. Set it as unit price, enter days worked as quantity. Total calculates automatically.
Create Your Consultant Invoice Free
Day rates, retainers, expenses — all in one professional PDF. No sign-up.