My husband, who controls all our finances, is demanding I transfer my inheritance to him

The title says it all. We run a small business bringing in about 7 million KRW a month. It's just the two of us, and it's enough to keep the family afloat. My husband is the business owner and he holds the purse strings. The problem is he uses one single account for everything—business, living expenses, and even his stock trading. I inherited 50 million KRW (~$37k) after my mother passed away late last year. Since he manages the money, he's demanding that I deposit my inheritance into his account. When we were newlyweds, I managed the money, but after several business failures and getting hit hard by a side-hustle scam, I handed the control over to him. Now I live on an allowance. It's not even a fixed monthly amount; I just tell him when I've spent what he transferred, and he sends more from that main account.

I told him I'm worried that a sudden large cash flow might trigger a tax audit or something, and asked him to at least give me a separate account to manage it in. He insists that small-timers like us don't get audited and that he'll handle everything, so I should just send it to the main account. If 50 million KRW suddenly goes in, is there really no chance of a tax audit? And is it really okay to mix multiple purposes in one account like that? He keeps the books well, but I feel really uneasy about putting my inheritance into a business account. He says opening a new account now is a hassle because of limit-restricted accounts and that the whole process is 'annoying.' That really hurt my feelings. I'm trying to entrust him with my late mother’s blood money, and he’s complaining about how 'annoying' it is to open an account.

My husband claims my inheritance is also 'joint marital property.' But every expert I've asked says it's my money, so I had no intention of transferring it at first. Only a month after my mom passed, he acted like it was a given that I'd transfer it to him. I got defensive, asking why I shouldn't keep it since I'm the daughter, and I've kept it in a savings account for a year now. Even if it goes to him, it's not like that 50 million will be spent immediately, and eventually, it'll be used for the family. I just want the purpose of this 'inheritance' to stay clear and don't want it getting mixed up in a business account.

____________________________ Adding to the post. I'm reading all the harsh reality checks in the comments. I admit I didn't manage money well, which is why I'm on an allowance. I don't even think of this as 'my' money; it's money my mom worked for, so I can't be reckless with it. I've been tightening my belt and being transparent about my spending to fix my habits. My 'allowance' is mostly fixed costs (phone, insurance), and my personal spending is less than 50k KRW (~$37) a month. Even that goes to hospital bills and supplements. The inheritance is my separate property—that's a legal fact. However, as I wrote at the start, it's not that I'm refusing to ever give it to him or let him manage it. Rebuilding trust is important to me, and handing over the purse strings was how I settled the issue of the money I lost (which was about the size of a severance package). My husband doesn't waste money like I did, so I should probably trust him. I'll take your advice to heart. Thanks to everyone who answered my questions.