For couples who keep money separate
Split the bills by what you each earn — not straight down the middle.
When one of you earns more, a flat 50/50 quietly leans hardest on whoever earns less. A proportional split — where each partner covers the same share of their income — is the fairer math. Find yours in ten seconds.
- Free · no login
- Nothing leaves your browser
- No bank connection, ever
Your fair, income-based split
Each partner covers the same share of their own income — so the rent costs you both the same percentage of your paycheck, not the same dollars. This is general financial education, not personalized advice.
Want this to update itself every month? See FairSplit →In development
The fair split is the easy part.
Keeping it fair as life changes is the part we're building.
We're building FairSplit, the couples app, around this idea: a shared fair split that re-balances itself when income or bills change, a guided weekly money date that takes ten minutes, and a calm shared record of who covers what — all without ever touching your bank accounts.
- Your fair split, auto-updated when life changes
- A 10-minute weekly money date, gently guided
- A shared who-pays-what record — no bank login, no money movement
Planned launch price · about $6.58/mo, billed yearly. The app isn't built yet — reserve early-access pricing below.
You're on the list. If we build it, you'll be the first to know — and we'll only email you about this. 💛
One quick thing — would you actually pay $79/year for FairSplit at launch? There's no wrong answer; it just helps us decide what to build.
Thanks — that's genuinely helpful. 🙏
No spam. We never connect to your bank or move your money. Privacy.
The fair-money playbook
Short, practical reads for couples who share expenses but keep separate finances.
How to split bills by income
The proportional method, step by step — with the simple formula.
50/50 vs. by income
Which split is actually fair when one of you earns more? Worked examples.
Separate finances, shared expenses
How couples who keep money apart still divide the costs cleanly.
The weekly money date
A 10-minute ritual that defuses money tension before it builds.
A Splitwise alternative for couples
Why an equal-split ledger isn't built for two people who love each other.
How much should each partner pay?
The honest answer, plus the calculator to settle it in seconds.
Common questions
Is a 50/50 split fair if we earn different amounts?
It often isn't. A flat 50/50 split means the lower earner gives up a much bigger slice of their income to cover the same bill. A proportional (income-ratio) split asks each partner to contribute the same share of what they earn — so the rent costs each of you the same percentage of your paycheck, not the same number of dollars. Many couples find that feels fairer, especially when incomes are far apart.
Does this connect to my bank account?
No. This calculator organizes who-pays-what — it never connects to your bank, never sees your balances, and never moves or holds money. The incomes and bills you type stay in your browser and are not sent to or stored on our servers. It's a fairness calculator, not a payment app.
Is the calculator free?
Yes — the Fair-Split-by-Income calculator is completely free, with no sign-up required. We're also building FairSplit, a couples app, around the same idea (a shared split that updates when life changes, plus a weekly money date); you can reserve early-access pricing, but the calculator itself stays free.
What's a 'money date'?
A money date is a short, regular check-in — usually 10–15 minutes a week — where a couple looks at shared expenses together, on purpose, instead of letting money tension build up silently. It's the ritual half of fair money: the split is the math, the money date is the conversation. FairSplit, the planned app, guides it so it stays calm and quick.