Listed in the following categories:

Accounting

Invoice Management

kalkül

Name: kalkül
Brand: kalkül
Rating: 5.00 (1 reviews)

5.0 (1)

Built by two Austrians and used by over 10,000 self-employed professionals. Create and send invoices, quotes, and delivery notes in seconds, including an automatic income & expense statement, payment reminders with late fees, and export for your tax advisor.

kalkül is GDPR-compliant, meets Austrian tax law (BAO), rated 4.9 out of 5 on Trustpilot, and ready to use in just a few clicks.

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This is how users rate the tool

Ease of use

Category average: 89 %

Excellent

Customer support

Category average: 88 %

Excellent

Meets requirements

Category average: 90 %

Excellent

Ease of setup

Category average: 87 %

Excellent

Global features

Setup & support

Cloud

On-premise

24/7 support

German-speaking support

Data Privacy

Server location DE

Server location EU

Only EU companies affiliated

EU standard contract

Versions

Free version

Free trial

Screenshots & Videos

kalkül Pricing

Pricing details

Last edited: August 2026

Popular
Forever Free
Free
All key features unlimited: invoices, quotes, bookkeeping, reminders & more. A few extras are part of the optional Supporter Plan — our deliberate choice to support the self-employed in Austria.
Unlimited invoices
Unlimited quotes
Unlimited delivery notes
Unlimited payment reminders
Unlimited customers & suppliers
Unlimited expenses & receipts
Unlimited products & services
Your own logo & company details
Automatic income & expense statement
SEPA-QR code for fast invoice payment
Export for your tax advisor
Optional line items in quotes
Overall & line-item discounts
Automatic VAT ID verification
Send documents by email in 1 click
and much more!
Support us
From9.90 €/ Month
Two Austrian developers, one goal: keeping kalkül simple and free for everyone. Support us and unlock extras like bank integration & custom design – from €9.90/month.
Connect your bank account
Recurring invoices
Invoices in foreign currencies
Invoice designer
Email designer
Asset register

kalkül Reviews (1)

What users say about kalkül

There are not enough reviews yet to create a summary.

“Top Rechnungs- Angebotsprogramm für Unternehmen”

5.0

In the last 30 days

Dominik

Validated Reviewer

Eigentümer at

Dominik Fenzl - Marketing und Beratung

1-50 employees
Industry: Marketing and Advertising

Use cases:

AccountingBillingInvoice Management

What did you like?

Es ist total Easy zu bedienen. Für den Start ist es kostenfrei und wenn man die zusätzlichen Dinge benötigt, dann ist der Preis absolut in Ordnung. Ich hatte vorher andere große namhafte Tools in Verwendung und war über die Jahre nie wirklich glücklich damit.

What did you not like?

Eigentlich kann ich hier nicht wirklich etwas beitragen. Es gibt noch keine Themen, die mich nicht glücklich gemacht haben oder die nicht sofort vom Support gelöst wurden!

Which problems are you solving with the product?

Rechnungen und Angebote schreiben sowie den Abgleich mit dem Konto durchführen. Man kann einfach keine Rechnungen mehr übersehen.

Get in contact

Software Guide for the category Rechnungsprogramme

Rechnungsprogramme

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