Microsoft 365 integration in Opti.Tax: what you need to know
What is the Microsoft 365 integration in Opti.Tax?
The integration of Microsoft 365 with Opti.Tax means that, with a Microsoft 365 account, you have access to additional features. For example, you can receive notifications directly via Teams or Outlook. Or Opti.Tax tasks are added and displayed directly in To Do.
Do I need a Microsoft 365 account to use Opti.Tax?
No. The Microsoft 365 integration is designed to make day-to-day work easier for users of Teams, Outlook and other Microsoft apps. However, you can still use all Opti.Tax features without a Microsoft account.
Fewer reception channels mean receiving all the information more quickly.
Communication takes place in the places you always use.
Never overlook anything again, never forget anything again. That way, fewer mistakes are made.
Working with Microsoft 365 in Opti.Tax

How Microsoft 365 integration eliminates media breaks
Fewer media discontinuities between the law firm and the client
Microsoft 365 integration makes it easier to communicate with clients, as well as within a law firm or company. Users receive their notifications and tasks via their usual channels, rather than having to keep track of additional inboxes and chat histories.
Greater timeliness in active compliance systems
TCMS, ICS or procedural documentation are not static PDF documents. This is due to evolving processes, changing responsibilities and actions that need to be taken. That is why automatic notifications and integrated tasks via Microsoft 365 channels offer significant added value. They help to record changes promptly and keep documentation up to date.
Before-and-after comparison
FAQ – Frequently Asked Questions
With the integration of Microsoft 365 into Opti.Tax, your communication takes place where you are used to it. We have answered the questions we have received from interested professionals on your behalf.
If you have any further questions, please do not hesitate to get in touch. We look forward to hearing from you.

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About hsp – Software innovation made in Germany
Since 1991, hsp Handels-Software-Partner GmbH has been developing professional software solutions for tax consultancy and audit firms, as well as for businesses.
Our taxonomy software Opti.Tax has established itself amongst discerning professionals in the DACH region as the reliable, high-performance and long-term solution for electronic invoicing. The digital tools for legally required, GoBD-compliant documentation are particularly popular.
Practical relevance, up-to-date content and genuine service
Our software modules are developed in close collaboration with experienced partner firms such as Energiesozietät GmbH for internal control systems (IKS), ADKL Abels Decker Kuhfuß & Partner mbB for transfer pricing, and Schröder & Partner for the digital pension file. In this way, we ensure that the features in Opti.Tax are tailored to the real-world challenges of day-to-day professional practice.
Regular updates ensure that changes to legislation and new requirements are incorporated into the software in a timely manner. In addition, we support you with a comprehensive range of service and support offerings, e-learning courses, access to the hsp Community, our weekly live broadcast „hsp live at 11“ and much more.







