Who this is for
Independent management consultants, strategy advisors, fractional executives, and anyone selling judgement and time to a client. If you charge a monthly retainer, run scoped engagements, or invoice for advisory work where the deliverable is the conversation itself, this template is calibrated for you.
What separates a consultant invoice
1. Scope summary. Your client's finance team almost never has the engagement contract in front of them when they process the invoice. A one-line summary near the top ("Strategic advisory, May 2026" or "GTM workshop, week of 11 May") lets them categorise the expense and approve it without coming back to you.
2. Travel and expenses on their own lines. Many engagements include reimbursable expenses: travel, hotel, food, the occasional research subscription. Invoice them as separate lines with receipts attached as backup. Burying them in the retainer total invites disputes and, in stricter finance teams, automatic rejection.
3. Renewal language in the terms block. Most consulting retainers auto-renew. Stating "Engagement renews monthly unless cancelled with 30 days' written notice" protects both sides and removes the awkward conversation about whether next month is on or off.
Pricing structures consultants actually use
- Monthly retainer. Flat fee for a defined scope and access level. Most common for ongoing advisory.
- Day rate. For project-based work or workshop days. Use for one-offs.
- Hourly with cap. For analysis-heavy work where total hours are uncertain. Always quote a not-to-exceed.
- Outcome or performance fee. Milestone payments tied to specific deliverables. Risky for both sides if outcomes are not crisply measurable. Use sparingly.
Payment terms that fit consulting
Net 30 is the corporate standard. Larger clients (Fortune 500, government bodies) often push for Net 45 or even Net 60. Fight for Net 30 unless the engagement is large enough that you can comfortably carry the float. For smaller clients, Net 14 is reasonable and increasingly accepted.
Always include a late-fee clause. A common one is "Late fees of 2% per month apply to overdue balances". You do not need to enforce it on every late payment; having it written down measurably reduces them in the first place.
How to use this template
- Open the consultant template.
- Replace the placeholder month and rates with your own.
- Adjust line items. Keep travel as a separate line even when it is zero, so the format stays consistent month to month.
- Update the From and Bill to blocks. Include your tax ID if your jurisdiction requires it.
- Click Download PDF. The invoice is also saved to History.