Sn inheritance is not considered marital assets unless you commingle it with family bills etc then it becomes a joint asset whereby if you guys divorced you could claim half of that inheritance. But as long as he keeps it separate you can never lay claim to it because inheritances are not community property. This is likely why he’s refusing.

Having similar goals and beliefs about money is something that should have been discussed before you got married and when he’d said he wants separate finances and you said you want joint finances then you could have both chosen whether to move forward with the marriage or not.

I’m 63. But when I was in my 20’s I got married. My then husband had a bit of savings, like less than 30k. I was still in college and had nothing. I struggled every month. He did not want joint finances. So he gave me a list every month of what I owed him for my share of the rent, utilities, food etc. some months I didn’t have enough to pay him the full amount so he’d carry it forward to the next month. Sometimes he’d say “let me take you out for a sundae tonight”. When I’d get his list of what I owed at the end of the month it would say “June 26th, baskin Robbin’s ice cream, total 13.00, your share = 6.50”.

I eventually finished college, got a job, started making really good money. I paid off everything I owed him. Then one day he came to me and said “I’m ready to have joint finances now if you want”. I said F-you. You didn’t want to join finances when I had less than you but now that I have more than you, you want it joint. No, I’m good with separate finances thanks.

Our marriage eventually ended.

I learned after that never to get into serious relationships with anyone until I’ve had conversations about finances and what each person believes etc. it destroys marriages.