Topic

Invoicing

Billing retainers, overages, hourly work and media so cash arrives on time and nothing delivered goes unbilled.

Guides

September 3, 2026
8 min read

How to invoice retainer clients

Bill retainers in advance, send a monthly usage statement, pre-pay overages, keep pass-through costs separate, and run a dunning schedule that protects cash.

Blog posts

August 25, 2026
5 min read

Invoicing for marketing agencies: the four billing models

Retainers in advance, pre-paid overages, hourly in arrears and media pass-through. What each one needs from your invoicing, with a real sample invoice.

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