Budgeting for couples, without the monthly fight.

Pick a setup before you pick an app

There are three common ways couples handle money. None is correct. The right one is the one both people can live with.

Fully joint. All income goes into shared accounts and all costs come out of them. It is simple and feels like a team, but one person's spending is visible to the other, which some people find uncomfortable.

Fully separate. Each person keeps their own accounts and they split shared costs by agreement. It preserves independence, but it takes more tracking and can feel transactional.

Hybrid. Each person contributes to a joint account for shared costs and keeps personal accounts for everything else. Many couples land here because it balances shared goals with freedom.

Deciding the split

If incomes are similar, splitting shared costs 50/50 is simple. If they differ a lot, a proportional split can feel fairer. A labelled example: if one partner earns 3,000 and the other 2,000, and shared costs are 2,500, a proportional split has them paying 1,500 and 1,000 (60 and 40 percent). Under an even split each pays 1,250, which is a heavier share of the lower income. Neither is wrong; the point is to choose on purpose.

The 50/30/20 calculator can help each of you see what a reasonable personal budget looks like once the shared costs are covered.

The monthly money meeting

Thirty minutes, once a month, same time, ideally with food. A simple agenda:

1. What came in and what went out last month.
2. Anything that surprised either of us.
3. Where we are on shared goals.
4. What is coming up: birthdays, trips, annual bills.
5. One thing to change.

Keep it kind. The aim is to look at the numbers together, not to audit each other.

How Vaulta fits

Be clear about what Vaulta is. It is a private tracker on one person's iPhone. Version 1.0 does not have shared accounts or live sync between two phones. So couples use it in one of two ways. Either one partner keeps the shared record and shows the other the screens at the monthly meeting, or each keeps their own and compares at the meeting.

What helps in both cases: goals with a date, so a shared target like a holiday has a monthly figure; bills and subscriptions in one list with yearly totals; and split bills and IOUs in the Free plan for tracking who paid for what. The daily safe-to-spend number is useful for the personal side: each partner knows what is free for them.

Things worth discussing early

• How much can either of us spend without asking? Agree a number.
• Who pays for what when one person has a big expense?
• What do we want to save for together, and by when?
• How do we handle debt that one of us brought into the relationship?

These are not romantic questions, but a few awkward minutes now prevent months of low-level tension. The Journal has a longer piece on budgeting with a partner.

A caution

If money is tied up with control, secrecy or fear, a budgeting method will not fix it. A counsellor or a qualified adviser can help. Vaulta is information, not advice.

Different attitudes to money

One partner is usually the saver and the other the spender, or one is anxious and the other relaxed. Neither is wrong. A shared budget works when each person has some money that is theirs to spend without justification. That personal allowance protects the relationship from small resentments and makes the shared plan easier to follow.