Hourly, Day Rate & Fixed Fee Billing
Switch between billing models on any invoice. Mix hourly and fixed fees on the same document if needed.
Built for Consultants — 100% Free
Free Consultant Invoice Template
Bill clients for consulting engagements, strategy work, or retainers. Day rates, hourly billing, or fixed fee — with professional PDF output and automatic tax calculation.
Free
Forever
Day Rate
or Fixed Fee
Auto Tax
Calculation
PDF
Instant Export
How Consultants Invoice Clients
1
Enter Client and Engagement Details
Add the client name, engagement title, and period covered. Reference any SOW or PO number your client needs on the invoice.
2
Add Consulting Fees
List your fees by hour, day rate, or as a fixed project amount. Add expense line items separately with descriptions.
3
Apply Tax and Export
Set your applicable tax rate — VAT, GST, or local equivalent. Export a branded, professional PDF ready to send.
Everything Consultants Need to Invoice
Retainer Invoicing
Set up recurring monthly retainer invoices with a consistent fee and payment terms. Duplicate last month's invoice in seconds.
Multiple Tax Types
Add VAT, GST, withholding tax, or any local tax. Set different rates per line item or apply a single rate to the whole invoice.
Client History
Every client's invoice history is saved. Review past engagements, duplicate invoices, and track outstanding balances at a glance.
Professional PDF Branding
Your logo, business name, and brand colours on every invoice. Looks polished — no design skills needed.
Cloud Backup
All invoices are securely backed up to the cloud. Access, edit, or re-send any invoice from any device at any time.
Frequently Asked Questions
How should consultants invoice clients?
Include your consulting firm name, the client details, a description of the engagement, your fee (hourly, daily, or fixed), tax, and clear payment terms. Always include a unique invoice number for the client's records.
What is the difference between a retainer and project billing?
A retainer is a recurring monthly fee for ongoing availability or a set number of hours. Project billing is a fixed fee for a defined scope of work. Both can be invoiced in Quotation Expert.
How do I invoice a client for expenses?
Add expenses as separate line items on the invoice — e.g. "Travel expenses" or "Accommodation". Include the cost and any agreed markup. Attach receipts or notes in the invoice notes field.
When should I send a consulting invoice?
Send invoices promptly — ideally the same day work is completed or at agreed milestones. For retainers, invoice at the start of each billing period so payment is due before work begins.
Invoice Every Consulting Engagement Professionally
Free forever. Join thousands of consultants who use Quotation Expert to get paid on time.