A useful starting budget is not a quote
An empty form makes you do all the work, while unexplained zeros can make an estimate look artificially cheap. This calculator opens with a complete illustrative budget. Financing, insurance, HOA, maintenance and utilities are original hypothetical assumptions. Tax uses a cited historical national survey benchmark. The labels next to each field show where the number came from. Editing a home price does not transform those other amounts into property-specific estimates or silently scale a national tax median with the price.
Understand the historical tax benchmark
The source is the U.S. Census Bureau 2024 ACS 1-year, table B25103, mortgaged owner-occupied US homes. The annual median is $3,580.00, with sampling margin of error ±$8.00. This is a dollar benchmark, not a rate. Sampling uncertainty is not a property-level range or prediction. The annual real-estate-tax definition covers taxing jurisdictions and relevant assessments; it is not a calculation of this home's taxable assessment, exemptions or purchase-related reassessment. A known bill can replace it.
Keep insurance and PMI assumptions explicit
The $1,500 annual homeowners insurance example is hypothetical, not a validated national average, local quote or statement about adequate coverage. Include a separate flood premium in your stated total only when it is not already included. Monthly PMI is modeled as the fixed amount entered while a loan balance remains, then stops at full payoff; upfront mortgage-insurance charges and other loan programs are outside this simple monthly-premium scope. The initial $0 is an explicit 20%-down scenario assumption. Neither the sample nor a lower-down sensitivity determines whether a lender requires PMI, how much it costs or when it may be canceled.
Move from exploration to property planning
Choose property planning mode and replace examples with figures you already know. Use the coverage selector to distinguish Your figure, Unknown and Not applicable. Unknown required costs remain named and produce a partial known subtotal. An explicit not-applicable choice means zero; it is not inferred from a blank field. Maintenance remains a budget allowance and utilities can be a total or a sum of components, counted once. Central source review retains the tax vintage and warns if review is overdue; it does not relabel an old survey as current. Save and export the assumptions so the uncertainty travels with the numbers.