d.velop-sign integration with Opti.Tax: what you need to know
What is d.velop sign?
d.velop sign is an e-signature software programme developed by the German company d.velop AG. With d.velop sign, you can sign documents and contracts digitally in a legally compliant manner that is in line with eIDAS and the GDPR.
What can I do with d.velop sign in Opti.Tax?
The d.velop sign integration in Opti.Tax enables the legally compliant signing of all types of documents created or entered in Opti.Tax. The d.velop sign functions are embedded within the software. This means you no longer need to print out documents, sign them by hand and then scan them.
Is the digital signature created using d.velop sign in Opti.Tax legally valid?
Yes. Contracts and documents signed using the d.velop-sign integration in Opti.Tax are legally valid. They do not require any further manual signature or separate approval.
Digital signatures are just as valid as a handwritten signature.
No printers, pens or scanners are required.
No need to wait for approvals, as they are granted in a matter of seconds.
Working with d.velop sign in Opti.Tax

How d.velop sign is eliminating media breaks
Finalise compliance documentation in accordance with the requirements
Procedural documentation, ICS/TCMS documentation and other compliance projects also frequently require formal approval from senior management, process owners or other approving bodies. The signed version records which version has been reviewed and approved.
Shorter lead times, greater traceability
Digital signatures reduce organisational delays and prevent breaks in the workflow. At the same time, they provide clear evidence of which version was approved by whom and when. This is particularly valuable in the case of recurring reports, where there are several people responsible and teams working in a decentralised manner.
Before-and-after comparison
FAQ – Frequently Asked Questions
By integrating d.velop sign into Opti.Tax, you can drastically speed up approval processes for compliance documentation or financial reporting. 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.







