Simple Invoicing

Square payments, Gmail delivery, and net terms — all in one place.

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Sign in to manage invoices

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Simple Invoicing
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Main
Configuration
Admin
Simple Invoicing

Dashboard

Active and past invoices and collections

Active invoices

Unpaid invoices. Click a row or Details to view.

Past invoices

Paid invoices. Click a row or Details to view.

Archived invoices

Archived invoices are hidden from active and past lists but remain accessible to customers.

New invoice

Create a one-time or recurring invoice

Invoice type
Customer

Fees, taxes & extra fields
Add from products

No products yet. Sync from Square on the Products page, or add items manually.

Recurring invoices

These schedules create and email invoices automatically.

Contacts

Customer directory with invoice defaults for autofill

Directory

Add contact


Invoice autofill defaults

Add from products

No products yet. Sync from Square on the Products page.

Products

Sync your Square catalog and reuse common items on invoices

Catalog

No products yet. Connect Square and click Sync from Square, or add a manual item.

Add product

Square-synced products update on sync. Manual products are only stored in this app.

Square

Connect your Square account to accept payments on invoices

  • Business profile and payment locations
  • Customer directory
  • Catalog items
  • Payments (card and bank)

Choose location

Location

Advanced (manual setup)

Gmail

Connect your Gmail account to send invoices

Authorize Simple Invoicing to send invoice emails from your Gmail account and store logos and PDFs in your Google Drive. We only access files this app creates (drive.file).

Connect Gmail & Drive

By connecting, you agree to our Privacy Policy, including how we access, use, and store Google user data. You can disconnect anytime in this settings page or in your Google Account permissions.

Google OAuth is not configured on this server. Ask your administrator to set GOOGLE_CLIENT_ID and GOOGLE_CLIENT_SECRET.

Business

Your company details and invoice defaults

Invoice design

Branding, fees, taxes, custom fields, and customer-facing appearance

Branding

Logo
Current logo

PNG, JPG, WebP, GIF, or SVG · max 2 MB

Fees, taxes & custom fields

These appear on every new invoice. Toggle and edit values per invoice when creating it.

Email & pay page

Preview

Users

Manage who can access the admin

Add user

All users

User

Your account details

Invoice preview

This is how your customer will see the invoice.