- each contributes to the joint account proportionally. ex He 100 k, She 80 k, His contribution: 100 / 180, Her contribution 80 / 180, or 56% / 44% split. It is better to come up with this % using net income following the tax return filing...it's the disposable income that matters...
- doing the above removes the financial friction as nobody feels he/she is lifting more than his/her weight...
It takes some effort but works...it is transparent...
Keeping a household is like running a company, with one CEO and one CFO...the CFO takes care of all the finances, budgeting, bills, etc...but the CEO has to sign off on it... When you marry it's a merger...but try to avoid an acquisition...
or having an in-law as COO ...