alltax Reutlingen
Tel. +49 7121 9333-0

alltax Sulz a. N.
Tel. +49 7454 9633-0

alltax Obernheim
Tel. +49 7436 1862

Newsletter abonnieren


01 Philosophy

Tax office alltax:
Your companion offering creative solutions

With 50 motivated employees, we see ourselves as your partner and offer creative solutions – as well as tax advice and audits tailored to you.

But it does not remain with the idea alone: the implementation of your wishes is important to us. A sense of unity, trust, appreciation and respect form the basis of our cooperation. This is why many clients have been loyal to us for more than 30 years.

As a partner of the ba group (association of German auditors), a member of PrimeGlobal (international association of more than 300 independently audit and tax consultancy firms) and through cooperation with lawyers, we have an efficient regional, national and international network of consultants at our disposal.






02 Branches

Our tax office.
Near you!

We are at your side! In the Neckar-Alb and Central Black Forest regions our tax office is represented by the offices in Reutlingen and Sulz a. N. Our consulting office in Obernheim is located in the Zollernalb district. We would also be happy to visit you on site - wherever you need support.


alltax gmbh Reutlingen

Gerhard-Kindler-Straße 6
72770 Reutlingen
Tel. +49 7121 9333-0

Sulz am Neckar

alltax gmbh Sulz a. N.

Bahnhofstraße 40
72172 Sulz a. N.
Tel. +49 7454 9633-0


alltax Obernheim

Am Bühl 41
72364 Obernheim
Tel. +49 7436 1862


03 Team

The team

We would like to introduce ourselves as your reliable team for tax advice, audits, legal and digitisation advice. Find out more about the management of alltax and our employees at our three branches in Reutlingen, Sulz a. N. and Obernheim.

Together for success! Get to know us...
Find out more...

"A good advisor of tomorrow must be able to unite specialist competence with digitisation competence in order to create genuine added value for his clients. We want to be successful together with our customers. That's my and our daily motivation!"

Harald Aigner

Managing Director

05 Cooperations

Our cooperation partners!

Experts of our trust to ensure your success!

The auditing division of the alltax tax office is represented by ba audit gmbh Wirtschaftsprüfungsgesellschaft with headquarters in Berlin and seven further branches in Dresden, Frankfurt, Hamburg, Hanover, Munich, Reutlingen and Stuttgart.
Find out more...

With CANDIS the preparatory accounting is digitised. CANDIS was developed by clients for clients and is the first software with which every entrepreneur can really save time and automate his accounting processes.
Find out more...

pathway solutions supports young and established companies in digitising their processes and developing digital business models.
Find out more...

We are a member of PrimeGlobal – an association of approx. 300 independent audit and tax consultancy firms in more than 80 countries. This makes us a member of one of the world's five biggest associations of auditors and tax advisors, offering varied competences and experience as well as diverse contacts in other countries.

The law office Tappmeier Rechtsanwälte has successfully advised and supported us for many years in the areas of commercial, corporate, inheritance and insolvency law.

Attorney-at-law Textor is our partner in all legal matters concerning employment and traffic law, claims management as well as commercial and traffic offences.

06 Certifications

Certified and authorised!

As an innovative and digital law firm, our internal office processes are highly digitalized and automated.

Networked cooperation with our clients is a matter of course for us as a team.

We are very pleased that our company has been awarded the new seal "DIGITAL TAX LAW FIRM" 2023 by Wolters Kluwer for these achievements.


Since June 2019, alltax gmbh has been authorised as a consulting company "go-digital" in the modules "Digitalised business processes" and "IT security". This is a funding programme initiated by the Federal Ministry of the Economy and Energy (BMWI) which supports small and medium-sized companies in digitising and optimising their business processes.
Find out more...

Craft enterprises are currently confronted with many challenges and changes. With the future initiative "Handwerk 2025" (Craft 2025), there is now tailor-made support for handicraft businesses in Baden-Württemberg. The focus is on personnel development, strategic orientation, new business models and digitisation.
We start with the topic of digitisation and support the craft trade sector in the conceptual and strategic implementation. We would be pleased to inform you!

The ADDISON OneClick certification is awarded to tax consultancy offices whose employees are particularly qualified in dealing with ADDISON OneClick and thus possible process optimisations in medium-sized companies through intensive training and further education measures.

07 Social commitment

We are happy to support this!


forkids is a not-for-profit and charitable foundation whose purpose is to help children and young people in acute emergencies – regardless of their nationality, social status or religion – and to improve the situation of these children and young people. forkids was founded in 2001.

Newspaper sponsor of the Elly-Heuss-Knapp School:

Since 2011, alltax has been sponsoring the reading corner of the Elly-Heuss-Knapp School in Sulz a. N. with the daily newspaper "Schwarzwälder Bote".
With this newspaper sponsorship, we want to make a contribution on site to promote reading, general education and media competence. This is especially important for young people and career starters to be able to form their own opinion and actively contribute this at school, at work and in their private lives.