How the affordability tracker works
The planning comparison uses compatible historical ACS definitions and a common illustrative loan scenario. It does not measure actual household housing burden. It is educational only, never an offer or a quote.
Data sources
- Illustrative interest: 6.5% planning assumption, not a current rate. Dated national FRED/PMMS benchmarks elsewhere remain subject to their provenance gates.
- Owner-occupied median home value: Census ACS 2020–2024 five-year B25077, not a sale-price median. Unrounded source estimates are used as hypothetical purchase-price anchors.
- Median household income: Census ACS 2020–2024 five-year B19013, all households, in 2024 inflation-adjusted dollars.
Payment formula
The estimated monthly payment is a standard principal, interest, taxes, and insurance figure with documented assumptions:
- Loan amount equals 80% of the historical home-value anchor (20% down).
- 30-year fully amortizing fixed-rate amortization.
- Property taxes use the same-release ratio of state median taxes to median owner-occupied value. This is not parcel millage or predicted post-sale tax.
- Homeowners insurance is a $1,800 annual illustrative allowance, not a local premium estimate.
The planning payment-to-income ratio divides annualized hypothetical payment by historical median household income. Different household universes mean this is not an actual observed housing-cost burden or a qualification assessment.
Refresh cadence
Current planning inputs are a checked-in validated ACS snapshot, served without per-visitor upstream requests. Refresh is explicit, bounded and atomic; a failed or incompatible release leaves last-valid data and original observation dates intact. New ACS releases require definition and period review, not automatic promotion. No financial background writer was activated for this planning layer.
Trailing 24-month trend
Previously stored calculations use legacy seeds and their original tax/insurance assumptions. Their inputs are not newly authenticated here. They remain separate, unchanged and unrecomputed. Never blend them with the new ACS planning rows or infer a continuous observed price/income history.
Sources, dates and planning methodology
Historical ACS survey estimates cover 2020–2024, through 2024-12-31. Retrieved 2026-10-15, not a current market observation date. Method: financial-planning-1. These estimates describe owner-occupied homes, not homes sold or a lender appraisal.
Tax benchmark = 100 × median annual real estate taxes paid (B25103 total) ÷ median owner-occupied home value (B25077), for the same state, universe and ACS five-year release. A ratio of medians is not the median effective tax rate, millage or a prediction of post-sale taxes. Ask the assessor about reassessment, exemptions and special assessments.
Closing fees are an itemized illustrative scenario, not statewide observed averages or verified state fee schedules. State scenarios use historical home value as an editable price anchor. The national default is an illustrative $350,000 price and 1% tax budget, not a sourced national statistic. Default rate 6.5% is an assumption, not a quote or current national average. Loan/service allowances: $1200 origination and $2500 other services; government allowance $2000. Replace these with property-specific, dated fees. No verified state fee schedule is applied.
Fee planning range uses 75% to 150% of the selected buyer-paid fee budget. It is a sensitivity range, not a statistical confidence interval and may not bound actual costs. Prepaids assume 15 days of interest and one annual insurance premium; initial escrow assumes 3 months of taxes and insurance. The prepaid premium and escrow reserve are separate periods, not two premiums. Actual lender requirements and closing dates differ.
Credits cannot reduce the down payment in this model. Deposits reduce cash due once. Financing fees, mortgage insurance, inspections, survey, HOA, attorney and special assessments remain unknown unless included in your edited allowances. Unknown does not mean $0 or waived. Confirm actual buyer responsibility, credit restrictions and final cash to close on the Loan Estimate and Closing Disclosure.
Affordability is a hypothetical payment-to-income comparison, not a measurement of actual household housing-cost burdens. Household income (B19013) covers all households in 2024 inflation-adjusted dollars; owner values/taxes cover owner-occupied homes. No local lender quote, eligibility or sale-price median is inferred. Historical affordability records and rate archives are separate and are not recalculated with this dataset.
What this is not
These figures are not a quote, an offer, an advertisement of a specific rate, or a representation of any rate, payment, or program available to any individual borrower. They are not personalized advice. Your actual rate and monthly payment depend on your credit, down payment, property type, occupancy, loan program, and the day you lock.
Mortgage Today is an educational brand owned and operated by Mektra LLC. We do not originate, broker, or fund loans. When you submit a request, we forward your information to a licensed loan officer in our network who can discuss programs available in your state. This is not a loan approval, commitment to lend, or offer of credit. All loan applications are subject to credit approval.
Mortgage Today is owned and operated by Mektra LLC.
Mortgage Today is an educational brand and does not originate, broker, or fund loans of any kind. If you submit a mortgage inquiry, agree to loan officer contact, and our network can serve your state, we forward your information to a licensed loan officer in our network. An introduction to another lender requires a separate request.