Enter your income and where it goes. We'll generate a flow diagram you can download and share.
A Sankey diagram is a flow chart where the width of each ribbon is proportional to the amount flowing through it. Applied to a budget, your income enters on the left and fans out into your spending categories on the right, like rent, food, debt payments, and savings. The biggest drains on your money become visually obvious in a way a spreadsheet never is. If one ribbon dwarfs the rest, you know exactly where to look first.
Enter your take-home income (add a second source if you have one), then list your monthly expenses by category. The chart generates instantly, and anything you haven't allocated shows up as an Unallocated flow. That is often the most revealing part, since it's money leaking out of your plan. When it looks right, download it as a PNG or copy it straight to your clipboard.
The best budget Sankeys use 6 to 10 categories. Group small line items ("streaming," "music," "apps") into one bucket like Subscriptions, and keep savings and investing as their own flows so progress is visible. If you're posting publicly, a common trick is to enter percentages of income instead of dollars. The shape of the chart stays honest without revealing your salary.
Monthly budget flow charts are a staple format in personal finance communities because they invite specific, useful feedback. Commenters can point at a ribbon and say "that's high for your income." Post yours, compare it against others in your income range, and regenerate it each month to watch the savings ribbon widen.