Money and numbers makes my DH uncomfortable and itchy. Weird, I know. So I've always handled everything. As he accumulated service years in his pension plan I made sure he had knowledge of where he stood and what we could do to optimize our future. He's a smart guy, he just has no interest in financial matters and he likes that I enjoy managing it for the two of us. I do all the banking, bill paying, tax planning and filing, and investing. Basically, if the bills are paid, there is food in the house and he has a little cash in his pocket, he does not want to think about the rest of it.
Like many others here, I have concerns about what would happen if I died suddenly. I keep a monthly spreadsheet of expenses on Google Documents that he has access to, I know he does not look at it. There is also an "Important Stuff" file with all the user names and passwords and a list of accounts. I keep papers at my desk and in a file cabinet that are clear (at least to me) about all our financial activity. After a health scare I reminded him that if I die first his pension increases from the "joint life" level to the "single life" amount and that I have $100,000 in term life insurance with the website link bookmarked on my computer.
I wish he would participate more since it's all his money, too. I opened a local savings account for 2% interest and wanted him as joint owner. It was a couple of months before he'd "find the time" to go into the bank with me and sign the signature card. It seems like he did it just for me, not because he actually cared. Good enough.
He's very cooperative about controlling spending and he says he doesn't mind downsizing and economizing now that he's retired.
I wish he was more interested in all of it but I guess I'll have to be content that he's cooperative. Our sons are very money savvy (I take credit for that!) so he'd have their help if something happened to me.