ClockoutFree saas invoice template you can download and customize
An invoice template for SaaS businesses billing customers for monthly or annual subscriptions, usage overages, and add-on services.
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Live preview — updates as you edit below
Invoice
SB-ENT-2026-0042
Issued
2026-05-25
Due
2026-06-09
Terms
Net 30
| Description | Qty | Rate | Amount |
|---|---|---|---|
| Streambridge Enterprise — 50 seats × 12 months (annual) | 1 | $30,000.00 | $30,000.00 |
| Premium support add-on (4-hour SLA) | 1 | $6,000.00 | $6,000.00 |
| Onboarding and migration services (one-time) | 1 | $8,500.00 | $8,500.00 |
| API overage — Mar 2026 (4.2M calls above plan limit) | 4200000 | $0.00 | $420.00 |
Notes
Annual contract: Apr 1, 2026 — Mar 31, 2027. Renewal date: Mar 1, 2027. Custom SOW signed Mar 15, 2026. SaaS subscription billing — adjust plan via dashboard for monthly/annual changes.
Edit the fields below — the preview and PDF update in real time.
Edit your invoice
From (your details)
Bill to (client)
Invoice #
Issue date
Due date
Terms
Line items
Description
Qty
Rate ($)
Amount
$30,000.00
$6,000.00
$8,500.00
$420.00
Tax %
Notes
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What this template includes
Every field you need for a professional saas 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
Subscription plan and tier
Billing period (monthly/annual)
Usage overage breakdown
Proration calculation
Best for: SaaS businesses billing customers for subscriptions, usage, and add-on services
When to use this template
Use this template for SaaS billing scenarios that don't fit your subscription billing system: enterprise contract renewals, custom one-off charges, usage overage true-ups, services and onboarding fees, or migration credits. The template handles subscription line items with billing periods, usage overage breakdown by metric, and proration for mid-cycle changes.
SaaS invoicing tips
Most SaaS billing should run through Stripe Billing, Paddle, Recurly, or Chargebee — automated subscription billing is too complex to handle with one-off invoice templates. Use this template specifically for the cases your subscription system can't handle: enterprise renewals with custom terms, one-time setup or migration fees, custom credits, manual overage true-ups, or non-standard contract structures. For the recurring subscription billing itself, use a dedicated billing platform.
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Questions, answered
Frequently asked questions
Should I use this template for monthly subscription billing?
Generally no — automated subscription billing should run through Stripe Billing, Paddle, Recurly, Chargebee, or another dedicated platform. Subscription billing requires automated proration, dunning, payment retry logic, and tax calculation that one-off invoice templates can't provide reliably. Use this template for one-off SaaS billing scenarios (enterprise renewals, setup fees, manual credits, custom contracts) where your subscription system isn't the right tool.
How do I handle usage overage on the invoice?
Show usage overage as separate line items broken down by metric. For an API product: 'API calls (10,000 included): 0', 'API calls (overage above 10,000): 35,420 × $0.0001 = $3.54'. For a seat-based product: 'Pro tier: 10 seats included × $50 = $500', 'Additional seats: 3 × $50 = $150'. The breakdown lets the customer verify overage charges and prevents disputes about what was actually consumed.
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