Singularity GmbH Reviews 

In my opinion, this company should cease operating as soon as possible.

Communication is extremely difficult, and their website raises serious security concerns. Norton has flagged potential security issues with their website. There are constant problems contacting them, endless changes to their system, delayed VAT returns, incomplete filings, and a complete lack of transparency.

They do not provide copies of the VAT returns they supposedly submitted. I am still missing more than a dozen VAT declarations that they claim to have filed in various EU countries.

Even worse, they failed to submit the required documents to the Polish Tax Office, which resulted in my company being automatically deregistered in Poland.

This has been, without a doubt, the worst company I have ever worked with.

I would strongly advise anyone considering their services to stay away. Based on my experience, I consider their business practices completely unacceptable and deeply unprofessional.

I will not pay them a single euro more!

I feel completely misled and taken advantage of. I would never recommend this company to anyone.

Worst tax service ever. I paid for their services, they did mot perform anything. they completely ignored my emails. It has been month i am chasing them to get tax sorted and de-registration also.

Awful experiecnce. had them for a couple of years. waited up to 6 weeks for a response sometimes. have chosen another company recently, but still get tax data requests from Singularity. Singularity Portal broken so I can't look up old data for my records and they have ignored requests from my new tax agent. The new company checked with DE authorities and found our 2024 annual VAT hasn't been filed! Zero trust in them.

Please stay away. I paid for their services and after a few months they completely ignored my calls and emails repeatedly. I had to go hire somebody else to help with the mess they left behind.

Do not use this company at all - worst experience I have in my career so far.

- No response from their team at all
- They do not send you filings or tell you if they have filed
- We have had multiple audits from tax authorities as they have not filed

Singularity are cheap, but they are not a functioning company and will definitely cost you thousands in fines and non-compliance.

I hired them to manage my Amazon account and submit my VAT returns. During the first few months, their service was good, but after that, they stopped submitting my VAT returns without informing me.

I tried contacting them several times by phone, but their phone number was not working. I also sent multiple emails and never received a reply. I was left without any support or explanation.

Because they failed to submit my VAT returns on time, I had to hire another accountant and pay an extra €500 in late-filing costs.

Based on my experience, I would not trust this company. If you are looking for a reliable accountant to manage your VAT obligations, I recommend staying away from Singularity.

Worked with Singularity (probably outsourced by Avalara) in 2024 to file my vat retuens in Germany. There is a problem with one of the returns, and their support team are impossible to get hold of and when i have got a response, they haven't shared / unwilling to share any of the work they submitted for me. For me, this means I have paid them a larger amount of money to not successfully file anything or manage my VAT accordingly. Hopefully one of their support team reads this and contacts me. Disgraceful

This looks like a complete scam. I am their customer for several years since they were part of Amazon partnered tax company but ever since Amazon let them go they didn't file any tax report since 2024 and it is impossible to contact them. I wrote multiple emails and called for 2 weeks every day with no hope to get any response now. They should be reported to german tax office and be banned from accounting practices!

Worst company to handle your VAT

We are having issue with EU marketplaces VAT and Amazon rejected them but for the last 60 days I am trying to contact them and they are not responding to any of the email after sending a reply that they have received the email.
One of the worst company to handle your VAT and really poor response time.

If I could give minus stars, I would.

Another reviewer called them “Scamularity” this reflects my experience.

You pay fees upfront, but the work simply doesn’t get done. The real problem only becomes apparent years later, when issues surface. In my case, Amazon blocked my account due to unmet VAT obligations that Singularity had been paid to handle.

It then cost me multiple times the original fees to fix the situation, not to mention lost income while my account was suspended.

Communication is extremely poor. Emails and calls go unanswered, and there is no transparency around what work has (or hasn’t) been completed. I was also unable to access historical submissions, which made resolving the issue significantly harder.

Their pricing may seem reasonable initially, but if the work isn’t actually carried out, the long-term cost can be substantial.

Given the seriousness of these issues, I sincerely hope the relevant German regulatory authorities review their practices.
I would strongly advise others to proceed with caution.

Absolutely atrocious. They are supposed to handle our UK and German that filings but we keep getting notices of late filings and then they do not respond to any emails

SCAM COMPANY, STAY AWAY!!! This is the worst company to work with. Singularity GmbH is doing my Amazon Pan Euro VAT return. My Germany VAT return didn't submitted for few months and my Amazon account got blocked by the Germany tax service. I have contact Singularity for 40 days everydays they stopped responding once we received notices from the german tax office. I have changed to a other VAT service already.

they never reply we got fines after fined because of there failure to do their job

STAY AWAY!!! . they stopped responding once we received notices from the german tax office. Despite clearly sending them funds to submit on our behalf, they did not send the money, they didn't respond. I contacted several past contacts withing the organization as well as their general filing and customer service and not one person bothered to respond.

Scam company, takes your money and doesn't do the work.
This company is a scam, they just sign as many clients as possible and take the money and then dont even submit your returns.

We moved our services to a different provider 6 months ago due to Singularity's persistent lack of attention and brutal price hikes. To our shock, we recently received a request for documentation for the 2024 VAT Annual Return, revealing they hadn't even started it, inexplicably squeezing the legal deadlines to the very last minute.

Since then, we have been trapped in an automated loop. We have sent the required files (AVTR reports, etc.) multiple times via email and cloud links, yet their bot keeps claiming they are missing. There is ZERO human support. Even more alarming, emails sent to their Director (Marko Kaiser) return a '550 Access Denied' error.

They have ghosted us while our business compliance is at risk. As others have said, choosing Singularity is playing Russian roulette. They are informal, technically incompetent, and dangerously slow. Stay away if you value your company's standing with the Tax Office (Finanzamt).

Would give zero stars if I could, Paid for a service 11 months ago and no work appears to have been done and can't get anyone to communicate with me or let me know what is happening. I am now getting fines because they have not submitted returns. Avoid, avoid, avoid

The single worse service based business i have ever dealt with.

Occasionally you think there is a glimmer of hope when you get a reply from a real person but it all falls apart in the next email when you're back to no answer.

Avoid like the plague!

Do NOT use the service!!! No Filing, No reply, No VAT!