<prompt> Human: My partner of 3 years and I have moved in and dont have a solid way to share common expenses, e.g. groceries, going out to dinner, household expenses. Sometimes well alternate who buys, but we dont track it very well and its probably not a very balanced system for that reason.Im thinking an easy way to tackle this is to have a joint credit card that only gets used for common expenses and split the payments biweekly. Is this the most common route? It seems like it would be much simpler than keeping records and reconciling at some interval.  <response>: The best way to split finances is the one that works for you and your SO. There are a lot of different options, depending on many expenses you need to share, and how much you want to co-mingle your money.A couple of things I recommend for everyone though: 1. Keep seperate accounts in your own name for emergencys - in some juristrictions if your SO dies suddenly you wont be able to access any joint accounts until probate is declared, or less drastically if you split up you need at least some funds that are clearly yours you can use immediately.2. Keep some spending money seperate for use entirely at your own discretion - it saves so many fights over new shoes or video games. When my SO and I first moved in together after 3 years of dating too! we opened a joint account with debit cards attached. We put an equal amount into the joint account each month and used it to pay for rent, bills, groceries and the occasional nice meal at a restaurant. This was a super easy way to split everything 50:50 and it worked well for us.We also wanted to save for a house deposit, and agreed an amount to save each, but for convenience kept these savings in seperate accounts we both already had high interest saving accounts, couldnt be bothered to set up another joint account. Now that we have a mortage our money is almost all in the offset account to save on interest, but we still have seperate emergency funds and spending allowances. 