ClockoutFree retainer invoice template you can download and customize
An invoice template for monthly retainer agreements with hour tracking and overage billing.
Free invoice generator
Fill in your details and download a professional PDF invoice.
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Invoice
PS-2026-APR
Issued
2026-04-23
Due
2026-05-08
Terms
Net 15
| Description | Qty | Rate | Amount |
|---|---|---|---|
| Monthly retainer — April 2026 (20 hrs included) | 1 | $3,000.00 | $3,000.00 |
| Overage hours — content strategy session | 3 | $175.00 | $525.00 |
Notes
Retainer: 20 hrs/month. 17 hrs used + 3 hrs overage this period. Unused hours do not roll over.
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Invoice #
Issue date
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Description
Qty
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Amount
$3,000.00
$525.00
Tax %
Notes
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What this template includes
Every field you need for a professional retainer invoice.
Business name, address, and contact information
Client name and billing address
Unique invoice number
Invoice date and payment due date
Itemized line items with description, quantity, rate, and amount
Subtotal, tax (if applicable), and total due
Payment terms and accepted methods
Notes or special instructions
Retainer period (month/quarter)
Included hours and overage rate
Hours used vs. remaining
Best for: Service providers with monthly or quarterly retainer agreements
When to use this template
Use this for ongoing retainer relationships where the client pays a fixed monthly fee for a set number of hours, with overages billed separately.
Retainer invoice tips
Always show hours used vs. hours included. Clients who can see utilization are more likely to renew. Bill overages on the same invoice to avoid a separate awkward conversation.
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Payment terms guide
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Questions, answered
Frequently asked questions
What should a retainer invoice template include?
A retainer invoice template should include your business name and contact info, client details, invoice number, date and due date, itemized line items with descriptions and rates, total amount, and payment instructions.
Can I customize this template?
Yes. This template is a starting point. Adjust line items, payment terms, branding, and layout to match your practice. Clockout generates invoices from tracked work automatically.
Is this template really free?
Yes, completely free with no signup required. If you want invoices generated automatically from tracked time, Clockout does that starting at $0/month.
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