How the math works
Remaining = total budget − sum of category spends. Overspend flags any category above its cap.
Example
- Set a monthly (or trip) budget.
- Assign a cap to each category.
- Log planned spend and watch remaining.
Catch the catches
- Give extras a small explicit line so they stop hiding inside groceries.
Questions
Are these calculators free?
Yes. They run in your browser. You do not need an account, and we do not require personal financial data to use them.
Should I treat the result as a bank or store quote?
No. Results are educational math. Merchants, lenders, and tax rules can differ. Verify the live terms before you pay.