Split costs fairly, based on salary
Everything you need to know about splitting bills fairly
Each shared bill is divided proportionally based on salary. If one person earns twice as much, they contribute twice as much to shared costs. Exclusive portions (items only one person uses) are assigned directly before the remainder is split.
A shared bill is split between everyone it applies to, weighted by salary. An exclusive portion is a fixed amount within that bill that belongs solely to one person — for example, if one housemate uses significantly more electricity — and is deducted before the rest is shared.
It depends on your preference, but monthly take-home (after tax) is often fairer as it reflects what people actually receive. Annual gross salary can overstate the difference between earners once tax is factored in. Both modes produce proportionally identical results as long as everyone uses the same type.
Yes — click "Add Person" to include as many housemates or flatmates as you need. Each person can have their own salary and can be assigned to any combination of bills.
Use the "Applies to" checkboxes on each bill category to select only the people who contribute to that bill. Anyone not ticked will not be charged for it at all.
No. Everything runs entirely in your browser. No data is sent to any server, and nothing is saved between sessions. Refreshing the page will reset all values.
Many people think so. An equal split means a lower earner pays the same absolute amount, which represents a larger share of their income. Proportional splitting means everyone contributes the same percentage of their earnings, which most find more equitable — though ultimately it's a personal decision between housemates.
Absolutely. Just rename the bill categories to match your event (e.g. "Food", "Drinks", "Transport") and add everyone who attended. The salary-proportional logic works just as well for any shared expense.
The tool currently supports British Pounds (£), US Dollars ($), and Euros (€). Selecting a currency updates all amounts across the app. The currency choice only affects the symbol displayed — the calculations are the same regardless.
If salaries are equal, shared bills are split exactly 50/50 between those two people (or evenly across however many share the bill). The proportional calculation naturally produces an equal split when everyone earns the same.
If a person's salary is entered as £0, they would contribute £0 to proportionally split bills (since their share of the total salary pool is zero). In practice, you may want to agree on a small fixed amount for them using the exclusive portions field, or simply exclude them from certain bills using the "Applies to" checkboxes.
Yes — just click on any category name and type to rename it. You can also delete categories you don't need with the × button, and add new ones with the "Add Category" button at the bottom of the bills list.
It's simply each person's total due divided by the overall bill total, expressed as a percentage. It gives you a quick sanity check — if one person earns 60% of the combined income, you'd expect their share to be roughly 60% of shared bills.
Yes. The layout is fully responsive and works well on phones and tablets. You can bookmark it to your home screen for quick access each month when bills are due.
The tool doesn't have a built-in export yet. A quick workaround is to take a screenshot or use your browser's print function (Ctrl+P / Cmd+P) to save the page as a PDF — all the totals will be visible for sharing with housemates.