How do you handle differences in spending and saving habits?

In my case, I am saver and my wife is spender. We decided to keep two accounts: joint account for bills and savings, and personal accounts for free spending. This way no judgment, no fight. It really helped us.

I think the best way is to create a budget together. One person may like to save, other likes to spend. If both agree on fixed amounts for savings and for fun, then balance is possible. Otherwise fights will continue.