Hi there
I am a forex trader and been here in Offshorecorptalk for a while. I have been learning from here and other researchings I've done by my own so I am going to give you a brief about your situation. I say brief because it's not an advice neither a solution because I don't work in the field and don't even know where do you exactly are located at. So here I go.
1. Suppose I make up some proof of residence in my poor homeland and set up a brokerage account in a reputable jurisdiction under my poor country passport. Will the high tax country ever learn about this account? Can the brokerage find our about my other passport and residency in a high tax country? What can go wrong with this scheme?}
Answer: Which jurisdiction do you plan to open a brokerage account?
Question: Will the high tax country ever learn about this account?
Answer: It depends about the jurisdiction brokerage account. If you open a UK brokerage account and you are Swiss resident, then they may report your account to Swiss government because of CRS. However, you need to know which countries has signed an agrement to exchange information and which not, I can't tell you because you don't say nothing. For example, if you live in Ecuador, ecuador has not signed an agreement with
Seychelles, so you can open a brokereage account in
Seychelles and Ecuador will not know nothing UNTIL you declare you have it because of the Ecuador Law. Please go to this site and learn which countries has signed mutual agreement
Countries - Financial Action Task Force (FATF) and check your passports and brokerages jurisdictions. However, if you a US resident then CRS will apply to you and you will not have any choice.
https://www2.deloitte.com/content/dam/Deloitte/us/Documents/Tax/us-tax-crs-country-status-010920.pdf
In few words, it's all about tax treaties. Do your homework because you didn't mention nothing about your countries, which I respect.
Question: Can the brokerage find our about my other passport and residency in a high tax country?
Answer: Other passport no, but does residency. Regulated brokers are require to implement AML policies and one policy is about WHERE you are a legal tax resident and where is funds coming from. Example: let's say you are a US Citizen and also a Nigerian Citizen. So let's say the brokerage asks you where are you from? So you say Nigeria, okey, where do you live ? I live in USA. Okey, Are you US citizen? Do you have a permanent residence? yes, okey now tell us your US address... and send us a bank statement showing you US address. So broker may not ask you US passport but by law it needs to know about it. Other example: where are you from? Nigeria, where do you live ? Nigeria, okey give us your Nigerian Adress, so you give them a Nigerian adress which your cousin lives, okey, now gives us a bank statement showing that YOU really lives in that address.. What do you plan to do then? You can not believe making fraud to that bank statement, changing the name of him to you name brother. We are not living in 50, 60 70 80's anymore.
Let's say you have Nigerian Passport, Nigerian Adress and Nigerian Bank account and Nigerian Address, okey now what about IP connection? YOu will need a VPN that routes to Nigerian. Okey now how do you plan to move your funds from your Nigerian Bank account to you US bank account where you actually live? making an international transfer? Okey, they will ask you, what is that transfer about coming from your Nigerian bank account to our US bank account? What is that about? A gift? My job? Okey tell us what do you work with ? okey I work as a freelance, okey show us proof of source of funds, show us the clients that payed out to you, shows us your nigerian clients.... you will face a lot of problems, trying to evade... you see goverments are not stupid. Now if you tell them it's trading they will tell you that it's prohibited from US laws, that a US citizen is working with a foreign broker. Prohibited and we will have to fine you or send you to jail. So you need to research about your country and working with foreign brokers...
2. Now suppose my sibling opens a brokerage account in a reputable jurisdiction and gives me full power of attorney including the right to deposit and withdraw funds from his account (some brokerages allow this). In this scheme the brokerage will know that I am a citizen of a rich country. I will fund the account, trade on it, and withdraw funds to my bank account in high tax country. In my tax return I will declare the withdrawals to be family gifts, which are not taxable in the rich country.
I suppose this setup would look very suspicious to the brokerage. Will they report me? Am I a reportable person even if I don't own the account technically? Can the rich country tax authorities find out that I am withdrawing funds from an account that I control through power of attorney? Is this even illegal? What can go wrong?
Question: Will they report me?
Answer: Yes, they will close your accounts and frooze your funds. You will loose it.
Question: Am I a reportable person even if I don't own the account technically?
Answer: Of course, you are legally liable for your actions and our siblings as well.
Question: Can the rich country tax authorities find out that I am withdrawing funds from an account that I control through power of attorney?
Answer: It depends where is funds going to. If you move funds to your country where you reside, of course. But if you move it somewhere else may be not, however you have to be very very careful.
Question: Is this even illegal?
Answer: Yes and no, withdrawing funds that is not yours it's illegal and you will have to go to jail, and trading for behalf of others is yes and no, it dependes about your countries and what do they think about it, example, in panama if you trade on behalf of others, it's illegal, you need to have a license, however, in Costa Rica, you don't need a license... Yet. I don't know too much about US and EU but I think you need a license for doing that, otherwise it's illegal.
Final thoughs:
Dear brother, doing tax evasion is not a good choice, it will bring you a lot of problems even if you start from 100 USD.
By other hand, you can't deposit withdrawal under power of attorney, the power of attorney only makes you open and close trades in the trading terminal and charging comission for it. The only way to take deposits from third parties is you are a legal hedge fund, mutual fund, investment bank, company etc... which they all require a license and millions to make it worth the costs.
I know your cousins can give you power of attorney to let you manage their bank account but you are liable to both countries for tax purposes and broker will not open their accounts. The broker rule says, you deposit and withdrawal in your own name, point.
I can not give you an advice because I don't know about your countries however here is an idea but you need to talk with local tax advisors for the two countries.
The best you may do is open an offshore IBC LLC company for trading with your own funds and a Saint Vincent and Grenadines LLC which is the only offshore jurisdiction that can let you be a Financial Advisor so you can trade on behalf of your clients but you are not allow to take deposits and withdrawals from to their accounts without license however you will need to confirm with the broker if they agree or not.
Open a corporate offshore bank account for that offshore company. Then open a corporate brokerage account.
Make profits and you can pay yourself as the director of the company from the speculative company and send the funds to you actually live as wages, or make a dividend but I strongly advise to find local advise because you don't have no idea how legal or illegal can be. In my country is legal but in you US I can become a bad boy LOL. and you know what happens to bad boys.
The last thing you can do in order to protect your assets is keep all all in an offshore foundation BUT you can't withdraw as you think, you need to study and be smart how do plan to withdraw because it's a foundation not a corporation and there are rules to comply with and if you keep your funds in your foundation, you are not the owner anymore so you may not be elegile to pay taxes, but remember, YOU ARE NOT the OWNER of your funds ANYMORE, so you CAN'T send funds to the foundation to your personal bank account as gift, only as wages, because you are the manager, director... You can not make a wire transfer of 1 Million to your personal bank account and buy a ferrari, BUT your foundation can hold any assets like cars, real estate, companies, yachts, jets, crypto whatever.... BUT in the name of the foundation, and the owner is the foundation itself not you.
So there are two options, one is flexible and the other is super restrictive but you are not liable to personal taxes because the funds doesn't belong to you.
Example:
I have a foundation and this one is the shareholder of the Financial Advising LLC in St Vincent and Grenadines, also owner of another St Vincent LLC speculative trading, also is the owner of a Panama IBC which this IBC is the owner of some luxury real estate in Panama which gives to the foundation passive income, also the panama IBC holds cars which are rented to create passive income, also I buy foreign real estate with a Belize IBC etc... but all of this is to the foundation, it doesn't belong to you my friend.
So I suggest not to evade but think smart and finally, with all respect you deserve, don't say you live in a rich country because all worlwide goverments are rich, but some are richest than others, but don't say that please, because I can tell you I live in one of the most powerful countries also but this is nonsense. I could say: in the country I currently live or in the country I live which has high personal/corporate taxes.
I hope this can give you an overview.
Bes regards.