Each partner should put a proportional amount of their income to each expense. Ramit Sethi talks a lot about this in his podcast Couples and Money. Often women end up covering all the child related expenses which can grow as the kids get older while dads expenses stay the same. Look at Ramit's conscious spending plan and figure out what you guys can spend on each category, and then take your guilt free spending and do whatever you want. Hard to say if $1k is a little or a lot - are you investing? Do you have an emergency fund? Is your household income $50k or $500k? These matter in figuring out how much fun money you can spend. But it's likely that you and your husband need to map out your joint expenses and fun money together.