A worked example
One income brings home $6,000. Shared costs are $3,600 and $1,200 goes to savings. That leaves $1,200: each partner gets $600 of personal money to spend, no questions asked.
Income guide
Short answerThe earning partner covers shared costs, but both of you get the same amount of personal money each month, and you set a date to review the arrangement. Nobody has to ask permission for small things, and it is clear this is a phase, not a debt.
One income brings home $6,000. Shared costs are $3,600 and $1,200 goes to savings. That leaves $1,200: each partner gets $600 of personal money to spend, no questions asked.
Return to your usual rule (50/50 or by income) from the first full paycheck. If you agreed on a loan, track the repayments so you can settle without surprises.
Set the split to 100/0 for this phase and switch back when things change, without touching past months. Each partner’s personal money stays in Mine, private.
Only if you agreed to that. Most couples treat it as a household phase, not a loan.
The same for both of you, from what is left after shared costs and savings.
Review the agreement on the set date and adjust shared costs or savings if needed.