Invoice Generator for Agencies
Create organised invoices for retainers, campaigns, project milestones, media costs and additional work. Make client billing clearer without relying on scattered spreadsheets.
Built for marketing, web, creative, development and consulting agencies.
Agency billing becomes complicated as client work grows
Most billing mistakes happen when rigid word processors and generic spreadsheets get bent into fiscal ledgers. Every extra click is billable time lost.
Monthly retainers that need to be billed on a predictable date
One-off projects running alongside ongoing retainers
Milestones that need to be invoiced separately from the retainer
Additional requests approved mid-month
Reimbursable expenses like ad spend or software
Several client contacts and accounts to keep straight
Tracking which invoices are still outstanding
Keep every client's billing organised
Bill retainers on a consistent monthly line item, with the period stated clearly.
Add one-off projects and milestones as their own separate charges.
Add approved additional work once it's signed off, rather than folding it into the retainer.
Add reimbursable expenses as their own line items.
Add a PO or account reference so invoices match the client's own systems.
Set consistent payment terms across every client.
See invoice status at a glance once you're signed in, so nothing slips through unnoticed.
What an agency invoice should include
Your agency details
The client's billing entity
The billing period
Retainer services included
Projects and milestones
Approved additional work
Reimbursable expenses
A PO number, where required
Tax, where applicable
Payment terms
An account or project reference
MakeInvo automatically standardizes these structural blocks on export.
A repeatable billing process for agency clients
Add the account
Add your agency details and the client's account information.
Add the billing
Add the retainer, project milestones and any approved extra work.
Add expenses
Add reimbursable expenses and a PO reference where needed.
Send the invoice
Generate the PDF and track it through to payment.
Built for ongoing client billing
Recurring invoices
Automate retainer billing so an invoice goes out on the same date each month.
Retainer billing
Bill a fixed monthly retainer with the billing period stated clearly.
Project milestones
Invoice milestones separately from retainers so each charge is easy to trace.
Client history
Registered users can see every past invoice for each client account.
Payment tracking
See which client invoices are paid, sent or overdue from one dashboard.
Revenue analytics
Review revenue and outstanding balances across all your agency's clients.
What your invoice can look like
An illustrative example — your invoice will reflect your own business, client, work, and chosen currency.
Northfield Digital
Solace Wellness Group
Account: SWG-04
| Description | Amount |
|---|---|
Monthly marketing retainer May | £3,200.00 |
Website maintenance | £250.00 |
Campaign setup - summer promotion | £600.00 |
Additional landing page | £420.00 |
Approved ad spend software | £90.00 |
Agency invoicing practices that support healthy cash flow
Use a consistent billing date for retainer clients.
Match invoices to the contract or scope of work agreed.
Keep retainers separate from additional, approved work.
State the billing period clearly on every retainer invoice.
Get sign-off on expenses before adding them to an invoice.
Use the client's own purchase order or account reference.
Review outstanding accounts regularly rather than waiting for clients to chase you.