What should a SaaS invoice template include?

A SaaS invoice template should include billing period, plan tier, account/customer ID, subscription charges, seat counts, add-ons, usage/overage charges if applicable, discounts or credits as negative line items, totals, and payment terms.

How do SaaS companies invoice per-seat pricing?

Per-seat billing is typically shown as a line item with quantity equal to the number of seats and rate equal to the price per seat, often alongside a base subscription plan fee.

What are usage or overage charges on SaaS invoices?

Usage or overage charges apply when customers exceed included limits (e.g., storage, API calls). They’re billed as separate line items using usage units as quantity.

Why is the billing period important on SaaS invoices?

The billing period shows what time range the subscription covers. It’s essential for customer accounting, reimbursements, and matching invoices to subscription terms.

How do SaaS invoices handle proration?

Proration is typically shown as a credit or adjustment line item when customers change plans mid-cycle. It helps align billing with the actual period of service.

What payment terms are common for SaaS invoices?

Many SaaS invoices are due on receipt, especially for monthly subscriptions. Enterprise accounts may use Net 14 or Net 30 depending on contract terms.

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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Lightweight design that keeps focus on line items.

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Strong structure for large projects or milestones.

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Timeless styling that works for any industry.

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Easy to scan and perfect for quick billing.

Detailed SaaS Invoice Template

Extra room for items, notes, and tax breakdowns.

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Clean sections with a subtle accent header.

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SaaS Invoice Generator

From

Bill to

Branding

Items

Name

Code/SKU

Qty

Rate

Amount

$79.00

Name

Code/SKU

Qty

Rate

Amount

$60.00

Name

Code/SKU

Qty

Rate

Amount

$29.00

Name

Code/SKU

Qty

Rate

Amount

$0.00

Name

Code/SKU

Qty

Rate

Amount

-$0.00

Name

Code/SKU

Qty

Rate

Amount

$0.00

Invoice Details

Invoice Number

Issue Date

Due Date

Additional Fields

Notes for client

Payment terms

Tax, Discount & Shipping

Tax Rate (%)

Tax included in prices

Discount (%)

Shipping (USD)

Payment Methods

Totals

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”).

SaaS Invoice Template

Download Popular SaaS Invoice Templates

Create Your Own Custom Invoice!

Clean SaaS Invoice Template

Minimal SaaS Invoice Template

Bold SaaS Invoice Template

Classic SaaS Invoice Template

Simple SaaS Invoice Template

Detailed SaaS Invoice Template

Modern SaaS Invoice Template

Use Free SaaS Invoice Generator

SaaS Invoice Generator

What to Include on a SaaS Invoice

SaaS Pricing Models: Subscription, Seats, and Usage

Billing Periods: Monthly vs Annual Invoicing

Proration, Discounts, and Credits

Frequently Asked Questions