1. Enter the household details
Complete each field using a consistent monthly or weekly basis as labeled.
2. Use realistic averages
Average recent bills, receipts, or schedules when values vary from period to period.
3. Review the main result
The highlighted result updates automatically whenever an input changes.
4. Check the breakdown
Use the supporting figures to understand annual impact, per-person values, shares, or timing.
5. Test another scenario
Change one assumption at a time, or select Reset to restore the default example values.