Ask HN: How do you structure your shared finances with your spouse/partner

We pay ourselves each an allowance that covers our personal spending. That's basically everything I spend money on by myself, so lunch out, treats, games whatever.

I think its a really good way if avoiding any worry about "wasteful" spending. What we each value is different. If we need to tighten our belts we just reduce the allowance, we don't need to fight over what specific spending is or isn't acceptable.

However, my wife and I do not particularly struggle financially, in part because we do not yet have children. We both have careers and steady incomes, so our individual spending habits are not a major source of conflict. We expect to have a joint account when we become parents. This would be especially important if one of us stopped working.

A spreadsheet that tracks periodic expenses - which produce an average monthly bill that we round up and split, each of us has an automated monthly deposit into the checking account, and the credit card automatically pays itself off from the same account. As many utilities as possible are auto paid by the credit card, the rest auto debit from the checking account. We keep about the checking balance at $1000 minimum to get a higher tier interest rate.

Additionally, we both drop $100 from each pay check into the savings account - so when we want to get or do something fun together, we have some extra sitting around.

At the end of every month, I sit down and draw up a little spending report for where our money has gone - and we either pat ourselves on the back, or grimace and resolve to be a little thriftier next month.

If you live in a community property state, and you want to keep things legally separate, that takes a lot of specific effort. I've always lived in community property states, my spouse and I took relatively zero assets into the marriage, and we're on the same page with spending and frugality, so I was 100% on board with joint accounts and delegated authority on the primary checking account. Keeping one checking account for two people is a labor savings. We ended up with separately managed credit cards, so if we make a big purchase on the other's card, we communicate. And I manage the primary checking account, but she has custody of the checkbook; so if she one of her credit cards has a large payment or writes a big check, we communicate. If there's any big changes in our investments, we communicate.

If you're living close to your means, communication will be necessarily more frequent. If you're living well below your means, you don't need to talk frequently about money because a payment that needs pre-authorization isn't as big.

For cars, it would probably be most flexible to have ownership as X or Y, but all of our cars are under my name at the moment because it was less effort. The house is in both of our names.

In my second marriage we kept separate accounts, at my insistence, having learned an incomplete lesson from the first. We divided shared expenses in proportion to our respective incomes, otherwise managing our own affairs. This was simple in that we rarely had to talk about money, but as my income grew, while her career (and mental health) deteriorated, it became awkwardly lopsided; resentments accumulated. Again, being unable to resolve our conflicts peacefully, the marriage failed.

In my third marriage we have both individual and shared accounts, for administrative convenience, though we tend to think of everything we are doing as a joint effort. We have structured our flows of income and expense differently at different times, depending on our circumstances, and we check in every couple of months to make adjustments as needed. This works - and I believe it will continue to work - because we consistently keep each other's interests at heart and resolve our conflicts in a way which draws us closer together.

In summary, I believe that the details of your financial structure are less important than the process of communication and accommodation you establish around it. There's no single right answer, and the right-now answer might not work so well next year. What matters is that you include a periodic check-in about financial state as part of your ongoing expression of care for your partner's well-being, that you maintain flexibility and willingness to adapt as your life changes, and - most of all - that you resolve your differences in a way which leaves you feeling like a team.