SaaS Invoice Template: What to Include for Subscription Billing
Create a SaaS invoice with subscription period, plan, usage, prorated charges, taxes, credits, payment terms, and a clear amount due.
Short answer
A SaaS invoice template should show the customer’s plan, subscription period, quantity or seats, unit price, usage charges, upgrades, credits, tax, and amount due. A customer should be able to see exactly which billing period and product access the invoice covers.
Use the SaaS invoice template or create a tailored PDF with the free invoice generator. The layout should remain consistent while plan, usage, and period details change each cycle.
Core SaaS invoice fields
Include:
- SaaS company name and billing contact
- Customer legal name, billing address, and tax number when required
- Invoice number, issue date, and exact due date
- Subscription plan and billing period
- Number of users, seats, devices, or units
- Base subscription fee and usage charges
- Setup fee, support, overage, discount, credit, or prorated amount
- VAT, GST, sales tax, or other required tax fields
- Payment method, currency, and account or subscription reference
Keep the subscription ID or customer account reference visible when the customer has more than one account.
Subscription invoice example
A SaaS invoice might show:
- Pro plan, September 1–30, 2026: 1 at USD 99 - USD 99
- Additional seats: 4 at USD 12 - USD 48
- API usage overage: 25,000 requests at USD 0.002 - USD 50
- Annual commitment credit: -USD 20
- Subtotal: USD 177
This structure lets the customer compare the invoice with the plan, usage dashboard, and contract.
Show the billing period clearly
Use dates such as September 1–30, 2026, not only September subscription. For annual billing, show the full coverage period and the renewal date if useful.
When a customer upgrades, downgrades, starts late, or cancels mid-cycle, show the original charge and prorated adjustment separately. Do not hide a plan change inside an unexplained total.
Usage, seats, and overages
Usage billing needs a measurable basis. State the unit, quantity, rate, and measurement period. Examples include seats, API calls, storage, transactions, messages, or active devices.
If usage is calculated from a dashboard, save the usage record or reporting date with the invoice. Clear line items reduce disputes and support the invoice line item description guide.
Taxes and international customers
SaaS tax treatment varies by customer location, business status, product type, and registration. Show VAT, GST, sales tax, reverse-charge wording, or registration numbers only when required by the applicable rules.
For customers in another country, use the international freelancer invoice checklist as a general reminder for currency and payment details, then confirm the rules for digital services.
Payment terms and failed payments
State the payment method, currency, due date, and any agreed automatic billing arrangement. A payment link can help customers update payment details or settle a failed charge. The invoice payment link guide explains how to keep the invoice reference visible.
If a subscription payment fails, keep the invoice status as unpaid or overdue until the balance clears. Send a reminder that identifies the invoice and billing period instead of creating a duplicate invoice.
Credits, refunds, and cancellations
Show credits or refunds as separate adjustments linked to the original invoice or subscription period. If the invoice was already sent, follow a documented correction or credit process. Keep the original and replacement records together.
For recurring billing, create a new invoice record for each period. The recurring invoice workflow explains how to avoid reusing old invoice numbers or service dates.
FAQ
Should a SaaS invoice include usage details?
Yes, when usage affects the amount due. Show the usage unit, quantity, rate, and measurement period so the customer can verify the charge.
How should I show a prorated subscription charge?
Show the service period and the calculation, such as Pro plan, September 15–30: 16 days at prorated rate. Keep upgrades, credits, and refunds as separate lines.
Can a SaaS invoice be used for annual subscriptions?
Yes. Show the full coverage period, annual price, renewal or payment terms, tax, and any included seats or usage limits.
Create a cleaner invoice
Use SimplerBill to create invoices and receipts in the browser, then download or print a PDF.