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Household Budget Planner
Normalize recurring income and expense lines into a monthly budget and savings gap.
Budget rows [income|expense,name,amount,period], Monthly savings target
JSON
Browser only
Runs locally in your browser. Your files, pasted content and generated output are not uploaded. Reset clears this tool’s working data.
This tool needs JavaScript. If it does not load, refresh the page and try again.
How to use this tool
- Enter the labelled values using the displayed units and explicit assumptions.
- Choose Calculate result and review the complete report and any undefined or no-solution states.
- Choose Download result to save the complete JSON. Reset clears the result and restores example controls.
Examples
Budget rows [income|expense,name,amount,period]: [["income","Take-home pay",3000,"monthly"],["expense","Rent",1000,"monthly"],["expense","Groceries",100,"weekly"],["expense","Insurance",600,"annual"]]
Monthly savings target: 500
Limitations
- 1–500 JSON rows [income-or-expense,name,amount,weekly|biweekly|semimonthly|monthly|quarterly|annual]. Nonnegative amounts,one currency;52weeks/26biweeks per year. Explicit monthly savings target. Report every monthly equivalent,totals,balance,savings-target gap and expense shares. No account lookup,tax treatment or prescribed budget percentages.
- Scalar controls accept explicit finite decimal syntax;positive values normally1e-12–1e12,nonnegative0–1e12 unless a narrower range is stated. JSON numeric rows use finite IEEE754 values within their stated bounds. Derived counts above1billion and nonfinite results refuse. Combined input<=400000UTF8 bytes;complete JSON<=4MiB. All processing stays in your browser.
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