KAST Reviews 

Honestly, my KYC experience with KAST has been extremely frustrating.

I followed their official KYC requirements and provided everything they asked for.

For Proof of Address, I first submitted an official Swiss bank statement from Dukascopy Bank SA, generated on September 23, 2026, showing my full name and residential address.

For Proof of Source of Funds and crypto activity, I also provided RedotPay wallet ownership evidence, including my USDT (TRC20) deposit address, as well as blockchain transaction evidence and a blockchain explorer link for my BTC transaction of 0.00047497 BTC from July 26, 2026.

After that, I submitted another updated set of documents based on their requirements.

I provided an official French-translated Certificat de Résidence issued on September 22, 2026, showing my full name and residential address and still within the 3-month period required by KAST.

I also submitted an official USD Account Statement from Wise Payments Ltd, generated on September 21, 2026. It shows my full name, address, recent incoming transactions and a balance above the minimum amount requested.

What makes this even more frustrating is that I checked KAST's own official Help Center before submitting these documents.

For Proof of Address, KAST explicitly says that bank statements and residency certificates can be accepted.

For Proof of Source of Funds, KAST explicitly lists digital account statements such as Wise and crypto evidence such as wallet ownership evidence, transaction history and blockchain explorer links.

So I didn't just send random documents. I specifically provided the types of documents that KAST itself says can be used for these verification requirements.

And now my latest submission has been waiting for 4 days with no proper response or update.

KAST's own Source of Funds article says that most reviews are completed within 1–3 business days.

So after providing all these documents and following every request, why am I still getting absolutely no clear update?

If something is missing, tell me exactly what is missing.

If one of my documents is not acceptable, tell me which one and why.

If you need additional evidence, ask me for it.

But don't keep requesting documents, receive everything, and then leave the customer waiting without any communication.

I have done everything requested from my side. I just want KAST to actually review my documents and give me a clear answer.

Very disappointing experience so far.

Account under review, ~$400 balance inaccessible, no response
I deposited $500 USDC from Binance, sent $100 to Redot, and had ~$400 left. After I terminated my old card, my account was placed under review and I lost access completely. I submitted the requested verification and a formal complaint, but I have received no timeline and no answer. I am not asking for special treatment. Either restore my access or send my existing balance to an external wallet I designate. Indefinite restriction of my funds is not acceptable.

Never trust Kast with your money, they immediately blocked my account after receiving money from my stock broker and said they don't know how long it will take to unblock. my money is now locked, be extremely cautious!!

They placed my account under review and then blocked it without providing me with a specific reason. When I reach out to them concerning the issue I was not told what exactly the issues was or what I need to do to resolve it. They completely fails when it comes to reliability and customer service. Managing my account with #...M𝘰netian...# has been straightforward in my experience. I've never had my access blocked or been denied when trying to get into my account and being able to access it normally had made things easier for me.

Don’t use KAST if you need a financial service you can rely on.

I contacted support for one simple reason: I wanted to change the Apple Private Relay email address linked to my account.

KAST could not solve it.

Instead, I was sent through repeated identity checks, account recovery questions, device checks and transaction verification. I provided everything they asked for.

There was no fraud. No unauthorized access. No compromised account.

KAST then blocked my account while I was still trying to resolve the issue with support.

This was not even my first attempt. I had already tried to change the same email address in January and eventually gave up because support could not handle it.

The problem is not that KAST presents itself as a bank. It does not. The problem is that it handles people’s money while its support appears unable to deal with a basic account issue without turning it into a security incident.

When something goes wrong, you may find yourself facing scripted replies, repeated verification, no clear ownership of the case and, in my case, a blocked account after asking for help.

KAST Tech is registered and licensed in Anjouan, Comoros. I have now filed complaints with the CFPB and with the authority under whose licence KAST Tech operates.

Don’t trust KAST with your money.

Great experience with CAST thx.

I would not recommend anyone use this app or put money on here. I have many digital accounts and I always check the Customer service to see how things would be if I ever had issues with my Account. Customer service here is as useful as a rock. I am not exaggerating. During initial verification I sent a payslip from a commission based job I had selling solar panels. They determined that it was an insurance policy and did not accept it . I had sent a full clear picture of my Internet bill as proof of address, which was one of the accepted docs and just got slapped with a generic message asking for the exact same docs. Multiple times I tried to clarify what was wrong with my bill and each time was meant with a generic response. Their is no way to call anyone, the staff is not bright at all and they will never get you a Supervisor. I made a supervisor request twice , an agent named Ann had reached out to me with generic messages and somehow was able to delete her message from my inbox as I no longer see her. When I mentioned that , they just stopped replying.
DONT USE THIS APP

Holding on to funds and excessive data collection

Update: resolved. The hold was a Noah verification (Sumsub, proof of address) that never reached my email because KAST had the wrong address on file. Once support fixed the email and re-sent the link, I verified in 5 minutes and the held 981 USD landed one minute later.

Leaving 3 stars: the product works and the money arrived, but it took two weeks and the same wrong instructions four times before anyone found the real issue. If support had checked the email on file first, this would have been a one day fix.

It does what I want and expect from it. Now I very happy for my interrupted payments with my card.

I have experienced frequent issues with Kast’s payment system. Transactions fail far too often, and what makes the situation even worse is that I am still charged a fee when a payment fails.

This can actually leave my account balance negative, which I find completely unacceptable, especially when the failed transaction is not caused by the user.

A payment system should be reliable, and if a transaction is unsuccessful, customers should not be financially penalized with a fee.

After experiencing this multiple times, I cannot recommend Kast. I hope they seriously review their payment system and, in particular, their policy of charging fees for failed transactions.

I’ve had a Kast account for over 2 years yet haven’t used it in the last few months. When I went to log in last month to begin using it again it said my account was “under review”. After emailing about this I was told I now needed to provide documentation to regain access. Not just proof of ID, they wanted proof of income, address from bank statements,etc. after sending this, they kept requesting even more information. They even went as far as to asking for a letter from my employer to provide proof of my official job title which feels completely irrelevant.
That being said, after a month of emails back and forth they still haven’t given me access to my account back. I can’t even login to withdraw my funds I had left in there. I’ve had people sign up with my referral that haven’t had to provide any documentation like this so I don’t know why it’s only being requested of me. I’ve asked for an update and they now haven’t responded in close to a week
Would not recommend Kast at all, Solcard works just as well and their customer service is way better than Kast

I've followed up several times about my frozen referral rewards. Support finally acknowledged the issue but I'm still waiting for an explanation and my payout. I'm used to payments from #FlFTH#Heavens reaching my wallet within minutes so having to keep chasing this payout has been frustrating.

The best fintech company out there offering a debit card with with an application that actually works. Cashbacks are generous and have been fully fulfilled.

I have been using Kast for 1.5 years and can highly recommend the company. The app design is clean and everything works well, the card has served me well in different countries and continents (without failing even once!). The founder and CEO is really talented and hard working (I listened to all his interviews and podcasts) and I have no doubt that Kast will emerge as one of the top companies in the neobank race, if not #1. The pace of innovation is also great. Its fun to see new functions and initiatives almost weekly, without compromising the core products.

The reason for almost all of the 1 star reviews is basically that Kast, as a serious financial services provider, must adhere to local anti-money-laundering and know-your-customer laws. Blaming Kast for having to provide additional documents after moving money to the app is unfair. My experience with the onboarding process has been great. Yes, not every single customer support interaction has been smooth, but every problem I had was solved quickly. I have signed up for a dozen similar apps initially and Kast turned out to be the one I use 95% of the time.

I will remain a loyal and happy customer. Thanks Kast!

Great company, the card is excellent, and the payments and returns are OK, hopping to grow faster,

All people we need it

I made a mistake with a transaction in the wrong coin. Perfect service and solution within 24 hours. Thanks to Kevin and Paula from the Kast team.

I had a very disappointing and stressful experience with KAST.

My EUR/SEPA account was verified and active, and I was able to use it normally. On 6 September, the verification appeared to be successful, I received my SEPA account details and even made a deposit to test it.

Then, without any warning, email, or notification, my EUR/SEPA account suddenly disappeared.

When I contacted support, I initially received generic answers suggesting that the problem could be related to an app update, my region, maintenance, or verification. None of these explanations made sense because my account had already been verified and was working.

After repeatedly asking to speak with a human agent, I was eventually told that my SWIFT/SEPA account verification was unsuccessful, but that they could not disclose the specific reason.

So my question is simple: How can my verification be successful, my SEPA account be activated and usable, and then suddenly be removed without any notice?

The worst part is that this has caused me real financial harm. Transfers sent to my former SEPA account have been rejected or returned. Instead of being immediately rejected so the sender can quickly recover the money, the funds are apparently returned through another transfer process, causing significant delays before the money becomes available again.

This means that because KAST removed my account without informing me, money has been unnecessarily delayed and I have suffered financial losses and inconvenience.

I find this completely unacceptable for a financial service handling people’s money. Regulatory and compliance requirements may exist, but they do not justify:

* Removing an active SEPA account without notifying the customer;
* Giving contradictory and generic explanations;
* Failing to send an email informing the customer;
* Causing incoming transfers to be rejected;
* Creating long delays before returned funds become available again;
* Refusing to provide a meaningful explanation;
* Failing to take responsibility for the financial consequences caused to the customer.

I have formally requested compensation for the financial harm and losses caused by this situation.

At this point, I have completely lost trust in KAST. Be extremely careful before using this service for important transfers or relying on their SEPA account. An account that is active today may apparently disappear tomorrow without warning, potentially leaving your transfers rejected and your money delayed.

I will update this review if KAST properly investigates my case, provides a clear explanation, addresses the rejected transfers and compensates me for the financial harm caused.

Provides real value services, solve realistic problems.