Free Consultant Invoice Template

Last updated: October 2026

Last updated: October 2026

Tip: click any field in the preview to edit it before downloading. Your edits stay in your browser. Nothing is uploaded, no signup, no watermark.

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What is this template for?

This free consultant invoice template is built for independent consultants, advisors and coaches: strategy, operations, marketing, HR and IT consultants. It handles the way consulting is actually billed — day rates, monthly retainers, milestone deliverables and advisory time — with space for an engagement reference on every invoice.

Retainers, day rates and milestones: how consultants bill

Consultants rarely bill by the hour. The three standard models are day rates for workshops and intensive work, fixed-fee milestones for defined deliverables like reports and assessments, and monthly retainers for ongoing advisory access — usually invoiced in advance at the start of each month, as the preview shows. Reference your engagement letter or statement of work on every invoice so the client can match it to the agreement. Expenses (travel, accommodation) go on separate lines at cost, agreed in advance.

Who should use it?

Independent consultants and advisors billing UK business clients. If you are VAT registered, use our VAT invoice template instead. Choosing between pricing models? Read retainer vs hourly vs project pricing.

What is inside the template?

Your consultancy details, client details, an engagement reference, invoice number with issue and due dates, an itemised table for day rates, milestones, retainers and advisory time, subtotal and total due, and a notes area for retainer terms and late-payment wording. Every field is editable: click it, type, then download.

What UK law requires on an invoice

Every invoice you send in the UK must show certain details to be valid. For a standard (non-VAT) invoice: a unique invoice number, the date, your business name and address, your customer’s name and address, a clear description of the work, the amount charged, and your payment terms. If you are VAT-registered, you must also show your VAT number, the VAT rate applied, and the VAT amount per line — see gov.uk guidance on invoices. This template includes fields for all of them, so an invoice built from it meets the legal requirements.

Frequently asked questions

For what happens when clients pay late, see late payment fees on UK invoices.

Want to customise this further? Open it in the free invoice generator — add your logo, save clients and download a polished PDF.