Free Invoice Template for Consultants

Consulting invoices differ from standard service invoices in their level of formality and the specific information corporate clients require:

• Engagement reference — statement of work (SOW) or contract number
• Billing period — the dates covered by this invoice
• Rate and unit — daily rate (e.g., "5 days @ €1,500/day") or hourly
• Project or workstream name — clients often track costs by project code
• Your company or trading name, registered address, and tax ID
• Client's purchase order (PO) number — mandatory for most corporate accounts payable systems
• Bank details — IBAN/SWIFT for international transfers

Day rate: The most common model for management and strategy consultants. Invoice weekly or monthly for the number of days worked. Easy to audit and align with corporate timesheets.

Monthly retainer: Fixed fee for a defined number of days or outputs per month. Provides income stability for the consultant and budget predictability for the client. Invoice at the start of each month.

Project-based fee: Fixed price for a defined deliverable — a report, a strategy, an implementation. Invoice in milestones: 30–50% upfront, remainder on delivery. Suitable when scope is well-defined.

invoicePrivate supports all three models. Use the line item description to specify the billing basis and period clearly.

Large organisations have strict accounts payable processes. Increase your chances of being paid on time:

• Always obtain a PO number before submitting an invoice — many finance teams will simply reject invoices without one
• Match the legal entity exactly — the company name on the invoice must match the contracting entity, not just the brand name
• Submit to the right inbox — many companies have a dedicated AP email (e.g., [email protected])
• Know the payment cycle — many enterprises run fortnightly or monthly payment runs; missing a cycle adds 2–4 weeks to your wait

Use the notes field in invoicePrivate to add PO numbers, project codes, and any billing instructions your client requires.

Consulting services are taxable services in most jurisdictions. Critical points:

• EU consultants invoicing EU businesses: For cross-border B2B, use the reverse charge mechanism. Include both VAT numbers and state "Reverse charge applies — Article 196 EU VAT Directive". The client accounts for the VAT in their country.
• EU consultants invoicing non-EU clients: Export of services — typically zero-rated. Add a note confirming this and retain evidence that the client is outside the EU.
• UK consultants: VAT at 20% for UK-based clients. For overseas B2B clients, most consultancy services are zero-rated for UK VAT.