Free Marketing Consultant Invoice Template & Generator

Your invoice needs to show exactly what work you did during the billing period. Break down hours by activity like strategy sessions, campaign development, content creation, or reporting. Marketing clients often manage multiple vendors and need this detail to match invoices against their approved scope of work. Their finance teams will reject vague line items. Include any pre-approved expenses like stock photos, software subscriptions, or ad spend you covered upfront.

Most marketing consultants charge a monthly retainer or bill by the project. For retainers, invoice at the start of each month for that month's work. For projects, ask for 50% upfront and 50% on completion, or split payments across milestones. Set net 15 or net 30 terms depending on client size. Bigger companies move slower but pay reliably once you're in their system.

Send invoices the same day each month so clients expect them and budget accordingly. The biggest mistake is waiting until you finish all deliverables to bill for a long project. You'll wait months for payment and kill your cash flow. Invoice monthly even on project work, marking it as partial payment against the total.