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Company details

  1. Payment Service
  2. Financial Institution

Written by the company

Die Tantum AG ist ein aufstrebendes, hochmodernes Technologieunternehmen, das sowohl Startups als auch traditionellen Unternehmen zeitgemäße Lösungen für einen reibungslosen Geschäftsbetrieb bietet. Ganz auf die Bedürfnisse des Kunden fokussiert, streben wir nach einem einfachen und sicheren Kundenerlebnis. Wir sind ein junges, dynamisches Start-Up Team und arbeiten täglich daran mit unseren Produkten (TantumIdent und TantumPay) die Online-Identifikations- und Payment-Industrie zu revolutionieren.


Contact info

3.9

Great

TrustScore 4 out of 5

20 reviews

5-star
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1-star

Replied to 100% of negative reviews

Typically replies within 2 weeks

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Rated 1 out of 5 stars

Lack of transparency and rules changed after contract signature

The onboarding process dragged on for over 3 months, with the same compliance documents and explanations being requested multiple times.

Despite providing everything repeatedly, new requirements kept appearing without any clear timeline or consistency.

After signing a contract, an exorbitant 1,200 EUR onboarding fee was suddenly introduced, even though it was never mentioned before. Changing rules and fees mid-process, without prior notice, is highly unprofessional.

Due to the lack of transparency, constantly shifting conditions, and unreasonable costs, I decided to cancel the onboarding.

Very disappointing experience. Would not recommend.

December 12, 2025
Unprompted review
Tantum AG logo

Reply from Tantum AG

Hi Linus,
Thank you for raising these concerns. We want to be as clear as possible about what happened. In some situations, if we see that the compliance workload is becoming very high due to unclear documentation or multiple revisions, and if the business volume is relatively low, we may need to introduce an upfront fee. This helps us ensure that we can handle the extra effort sustainably.

We also want to clarify that no contract had been signed at this stage. We communicated these conditions before any formal commitment to ensure there would be no surprises down the line.

We understand that this adjustment came up after we had already started the onboarding process, and we apologize for any inconvenience that caused. Our goal is always to communicate these prerequisites as early as possible to avoid surprises. We appreciate your understanding and wish you all the best in finding a service that meets your needs.

Rated 1 out of 5 stars

Try to sign up for this service. No go

Try to sign up for this service, but it would not accept a six digit verification code tried later on and they still would not. Customer service link within contact Tanhum pay does not work get a cheeky response. Wrote an email has a 12 hours later. I have not received any response back.

June 4, 2025
Unprompted review
Tantum AG logo

Reply from Tantum AG

Hello Kevin, thank you for your feedback! We are sorry to hear that you experienced problems accessing our services.
Unfortunately, we are unable to respond to every email within a few hours. We apologize for any inconvenience this may cause. Your email has been processed by our support team. Please check your inbox and provide our colleagues with the requested information so that we can assist you further. We look forward to hearing from you!

Rated 5 out of 5 stars

Simple & Easy to use

My deposit went through instantly, as did my payment! The UI is user-friendly, it's simple to use and easy to navigate.

December 12, 2024
Unprompted review
Tantum AG logo

Reply from Tantum AG

Hello Loren, thank you very much for the praise! We hope you enjoy using our services.

Rated 5 out of 5 stars

Payment was fast and secure

Payment was fast and secure, glad the wife doesn’t know about anything! ;)

December 11, 2024
Unprompted review
Tantum AG logo

Reply from Tantum AG

Hello Daniel, don't worry: thanks to our payment solution, you remain 100% anonymous to third parties.

Rated 5 out of 5 stars

Anonymous & easy

Easy to use, best way to pay within one click and fully anonymous

December 11, 2024
Unprompted review
Tantum AG logo

Reply from Tantum AG

Hi Jasper, thank you for the positive review!

Rated 5 out of 5 stars

Used it to buy porn

Used it to buy porn, my wife can’t find out. Works terrific!

December 9, 2024
Unprompted review
Tantum AG logo

Reply from Tantum AG

We are delighted that you like our solutions. Your data is safe with us!

Rated 5 out of 5 stars

Excellent Payment Solution

I've been using TantumPay for a few months now, and it has completely transformed how i handle payments. Super fast and easy transaction. The Kyc checks also went smooth with no annoying back and forth.
Can recommend (Y)

September 3, 2024
Unprompted review
Tantum AG logo

Reply from Tantum AG

Thank you for your kind review! We hope you continue to enjoy our solutions.

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