SaaS Invoice Template

Create professional SaaS invoices for subscriptions and recurring billing with clear plan tiers, seat counts, and billing periods. This SaaS invoice template supports add-ons, onboarding fees, discounts, and usage-based charges—ideal for software companies invoicing monthly or annual subscriptions. Download instantly in PDF, Word, or Excel format.

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Invoice Details

Tax, Discount & Shipping

Payment Methods

Bill to

Subtotal$168.00
Total (USD)$168.00

What to Include on a SaaS Invoice

SaaS invoices should help customers understand recurring charges and what the subscription covers.

Account details
  • Customer/account name
  • Account/customer ID
  • Billing period (month/date range)
Subscription details
  • Plan/tier name
  • Seat count (if priced per user)
  • Add-on modules
  • Setup or onboarding fees (if applicable)
Usage-based billing
  • Overage/usage charges when limits are exceeded
  • Brief usage summary (optional)
Credits
  • Discounts, credits, promotions as negative line items
Totals
  • Subtotal, tax (if applicable), total due
  • Payment instructions and references

SaaS Pricing Models: Subscription, Seats, and Usage

Most SaaS businesses invoice using one (or a combination) of these models:

1) Flat subscription
A single recurring fee for a plan tier.

2) Per-seat pricing
Base plan plus seat charges. Quantity = number of seats.

3) Usage-based billing
Charges per unit (API calls, messages, storage). Quantity = usage units.

4) Hybrid
Subscription + seats + usage overages (most common for B2B SaaS).

Your invoice should separate these categories so customers can verify totals quickly.

Billing Periods: Monthly vs Annual Invoicing

SaaS customers often need invoices that match their accounting periods.

Monthly billing
  • Invoices each month for the billing period
  • Often due on receipt
Annual billing
  • One invoice for the year
  • May include proration for mid-year upgrades
Including a dedicated “Billing period” field reduces questions and supports expense categorization.

Proration, Discounts, and Credits

SaaS invoices often include credits due to plan changes or promotions.

Common credit scenarios
  • Plan upgrades/downgrades mid-cycle (proration)
  • Promotional discounts
  • Service credits
Best practice is to list credits as separate negative line items and include a brief label (e.g., “Proration credit”).

Frequently Asked Questions