Free Invoicing Software for
Freelancers and Small Businessesr

Easily create, send, and track professional invoices for freelancers, sole traders, and small businesses. Save time, improve cash flow, and keep your books organised with ease.

Send Invoices Online

Free Invoicing for
Sole Traders and Entrepreneurs

Reduce invoicing hassles and speed up your payment processes with clear, straightforward invoicing tools.

Simplify Your Invoicing, Save Hours

Otto AI free invoicing software takes the pain out of paperwork, letting you send polished, professional invoices effortlessly, giving you more time to focus on your business.

  • Tailor your invoices to hourly charges, fixed fees, or bundled pricing

  • Automatically handles VAT calculations, discounts, and totals

  • Easily include personalised notes or instructions for each client

  • Attach files instantly, contracts, receipts, or supporting documents

Software de facturación Otto AI
Software de Facturación Gratuito

Set Your Invoices on Autopilot

Whether it’s monthly retainers, subscription plans, or regular projects, Otto AI free invoicing software automates recurring billing, taking repetitive admin off your hands.

  • Automatically schedule and send regular invoices

  • Easily customise intervals, details, and payment terms

  • Clients receive timely, branded invoices every time

  • Support for multiple currencies, ideal for international clients

Flawless Invoices, Delivered Every Time

With Otto AI free invoicing software, every invoice lands on time, perfectly presented, and to exactly the right recipient, making you look professional every time.

  • Preview invoices before sending to ensure accuracy

  • Deliver via email, with CC options included

  • Easily download invoices as PDFs or export to Excel

  • Manage multiple brands or businesses seamlessly from one place

Software de Facturación para Pequeñas Empresas
Software de Facturación en Línea

Streamline Your Payments, No Fuss

Otto AI free invoicing software simplifies the entire payment process, helping clients pay easily and keeping you effortlessly updated on what's paid, what's outstanding, and who might need a friendly reminder.

  • Clearly track each invoice’s payment status

  • Easily mark invoices as paid with just one click

  • Automatic reminders mean no awkward chasing

  • Choose your preferred payment methods (Bank Transfer, PayPal, or other popular platforms)

How to Use Invoicing Software in 3 Simple Steps

Send polished invoices in seconds, so you get paid faster, with zero hassle.

1
Step

Enter Invoice Information

Click “Invoicing,” select past clients and services, and enter item details with just a few clicks.

2
Step

Set Payment Details

Choose how you want to get paid, Bank, PayPal, Venmo, or Zelle. Add files or a deposit if needed.

3
Step

Review & Send

Double-check everything, save it as a template, and hit “Send.” Smart reminders go out automatically.

Invoicing Software Features That Save You Time

These invoicing essentials come standard, no plug-ins or awkward workarounds.

Recurring Invoices

Set them once, Otto AI sends them on schedule.

Custom Branding & Fields

Add your logo, brand colors, and client-specific notes.

Payment Flexibility

Offer multiple payment options and set custom terms.

Invoice Reminders

Automatically follow up, no “just circling back” emails needed.

Dashboard Overview

View sent, paid, and overdue invoices at a glance.

PDF + Excel Exports

Keep clean, organized records without extra tools.

Otto AI Invoicing Software Vs Other Platforms

Other platforms like Quickbooks, Honeybook, Freshbooks, Wave make you add plugins, pay upsells, and juggle tabs just to send one invoice. Otto AI brings it all together, fast, simple, and built for service-based small businesses. One platform. Every feature you need. No hassle.

AI-Assisted Invoice Creation
Customisable Templates & Branding
Recurring Invoices
Payment Reminders
Multi-Currency Support
Accounting Sync (Automated Accounting)
Automatic Client Data Saving & Drafts
Advanced Line Item Customisation
Save & Resume Editing
Reports & Analysis
Responsive Mobile
Partial/Advance Payments
Theme & Colour Selection
Memo & Attachments

Otto AI Invoice Templates

Whether you’re photographing corporate events, concerts, or galas, Otto’s pre-made contracts and forms keep you protected and professional.

From Formation to Tax Declaration,
Otto AI Handles It All

Everything you need to manage, organise, and grow your business with ease.

Reviews are here.

Straight from our customers—how Otto is changing the way creative businesses manage money.

Owner of Design Company

“I’m excited to help Otto reach more creators because every creative deserves access to the tools and support they need to grow their businesses and focus on what they love—creating.”

Sophia Yeshi

Sophia Yeshi

Illustrator & Designer

Diapositiva 1 de 3.

Invoicing FAQs

Why use Otto invoicing software?

Otto AI invoicing tool is smart, easy to use, and completely free. It offers customisable templates and helpful automations, making it ideal for creatives and small businesses who want to stay organised without spending extra.

Can I track whether an invoice has been paid?

Yes. Our Invoicing Software allows you to monitor the status of every invoice and automatically sends polite reminders, so you’ll always know what’s been paid, what’s outstanding, and what might need chasing.

What payment methods are supported?

Otto AI Billing Software supports a range of payment options including bank transfers, debit/credit cards, PayPal, and more. You can enable your preferred options and Otto AI Invoicing adds one-click payment buttons to each invoice.

Does the invoicing software calculate totals and VAT automatically?

It does. Otto AI auto-calculates totals, VAT, discounts, and other figures in real-time, saving you time and reducing the risk of errors.

What should be included in an invoice?

A proper invoice should list the invoice number, date, your business details, a short description of the services provided, payment terms, due date, and accepted payment methods. Our free invoicing software helps ensure you include everything that’s required.

Should I include VAT on my invoices?

If you're VAT-registered or required to charge VAT, you should always include it on your invoices. Otto AI makes this easy by handling VAT calculations automatically to help you stay compliant.

Can I save client details for future use?

Absolutely. Otto AI Billing software securely stores your client information so future invoices take just seconds to generate, just select the client and the rest is filled in for you.

Can I customize my invoices?

Yes. You can fully personalise your invoices by adding your logo, branding, preferred currency, VAT rate, and more, ensuring every invoice feels professional and on-brand.

What if I just need to create a one-off invoice quickly?

No problem. If you need to create a single invoice without signing up or using the full platform, try our free invoice software . It’s perfect for freelancers who need something quick, just enter your details and download the invoice instantly.

Can I send and track invoices from my phone?

Yes! Otto AI works seamlessly on mobile, so you can create, send, and track invoices wherever you are.

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