1. Enter the monthly housing charge
Use the mortgage payment or rent that applies each month.
2. Add annual ownership costs
Enter annual property tax, insurance, and a maintenance reserve.
3. Add monthly operating costs
Include utilities and any association or recurring property fee.
4. Check period consistency
Keep annual items annual and monthly items monthly; the calculator performs the conversion.
5. Review the estimate
Use the monthly and annual totals when comparing properties or budgets.