Invoicing software for freelancers and entrepreneurs

Manage your sales and finances with Isolta invoicing software – conveniently and regardless of your location. Free for low volume invoicing. Our customer service will always help you free of charge.

  • Simplifies your accounting

    Reliable accounting

  • Finnish

    with over 15 years of experience

  • 30 000+ customers

    98 % of users recommend

  • Free invoicing software

    for limited number of invoices

The easiest way to manage your invoices

Quickly add the customer, products and services from the register to the invoice. Your previous invoices are stored, and can be used as templates for new invoices.

With Isolta, you create professional looking invoices, that you can send either by paper or electronically.

Save time and effort — Get your money faster and more reliably

Make a professional impression
You create stylish invoices. Calculation and legislation are automatically taken into account.

Save time
You can access the previously created invoices and use them as templates

Get your money faster
Deliver the invoice as your customer prefers and they will pay faster

Henrik Tenhovirta
“Some of the best free software I have used”
Henrik Tenhovirta
Elementti web-kehitys ja konsultointi
Tuomo Aura
“Creating an invoice has been enjoyable, easy and fast!”
Tuomo Aura
Web-veistämö Oy
Arttu Muukkonen
“Online system rocks immediately after the first tests”
Arttu Muukkonen
Suunnittelutoimisto Koskine & Muukkone Oy

Free invoicing software — pay only when your business starts to thrive

Completely free if you send invoices only occasionally. Reasonably priced for small businesses.


0/ Month 10 invoices per year


4,90/ Month + VAT Unlimited

With 10 invoices per year you get Isolta and all of its features free of charge.

E-invoices, printing service and checking customer's credit defaults are services with additional fee. As your business grows and your invoice limit is met, you can easily expand to a paid versions.

You can also earn extra invoices by recommending Isolta to your friends.

Pro version includes all the software features without restrictions.

E-invoicing, printing service and checking payment defaults are services with additional fee (see Price list of additional services).

The billing period is 12 months. It is possible to select a 3-month billing period at 6,90 € / per month + VAT.

Premium version is most effortless for the user. It includes all the features without restrictions. Payment control and debt collection services as well as other additional services can be added to the Premium version.

Payment control, debt collection service, e-invoicing, printing service, and checking payment defaults are services with additional fee (see Price list of additional services).

The billing period is 12 months. It is also possible to select a 3-month billing period at 22,90 € / per month+ VAT.

Features in all versions:

  • Cloud-based Use anywhere and on all devices. All you need is an internet connection. Your data will always be with you.
  • Free customer support Do you have any questions or need help using Isolta? We will happily help you, for free.
  • Invoicing Create and send invoices effortlessly. Use different invoice templates and barcode.
  • Electronic invoicing Send invoices via e-mail or electronically.
    Email invoice 0€
    E-invoice 0,39€-0,59€
    Printing service 1,46€
  • 7 languages Use Isolta in your preferred language and send invoices in English, German, Russian, Swedish, Finnish, Latvian or Estonian.
  • Customer management (CRM) Keep track of your customers' orders, communications and agreements.
  • Product Register Save products, services, hourly rates and add them to the invoice directly from the product register.
  • Receivables Check from the invoice list if the invoice is past due, paid or unpaid.
  • Payment reminders Add late payment fees and penalty interest and send the reminder to your customer
  • Sales reports With the help of sales reports you are able to estimate how your business is doing. Send reports to your accountant too!
  • Quotes Create quotes, order confirmations and dispatch notes from invoice drafts.
  • Upcoming features We are constantly developing our service based on our customers feedback. When we release a new feature, it will be available to you right away. We take care of the updates, so you could focus on invoicing.

Backed by real people with awesome attitude

We have been working among entrepreneurs for over 15 years, and entrepreneurship is close to our heart. Our duty is to ask, listen, and help – to develop the service according to your wishes.


Works on different devices

Anywhere. Anytime. Any device. As long as you have a web browser you’re golden.

Entrepreneurs favourite

Over 30 000 satisfied entrepreneurs are using Isolta's services.

Proven security

Isolta is up to the highest level of security. Audited by The Finnish Software Entrepreneurs Association.

Free customer service

We have a team of invoicing specialists helping you at every step of the way

Send your first invoice within minutes

Sign up for Isolta for free! No credit card needed. No commitments. Have a look around or start invoicing right away. Watch the video to see how easy it is to send your first invoice.

Great! Just activate your Isolta-account and it is ready for use.

The activation link of your user account has been sent to you by email .

Activate the account by clicking the link in the email..

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What happens when you sign up?

  1. We will create an account for you and send you an activation link to your email. By clicking the link you will be directed to Isolta to start invoicing.
  2. You can use Isolta with all its functions. The account will remain in the free version until you place an order.
  3. You can switch to paid version when needed by placing an order within Isolta.