How we calculate your numbers
Every figure in a Reloc8te report is either verified — computed by one of our calculators from a named government or commercial data source — or clearly marked as an AI estimate. This page explains which is which, where the data comes from, how the headline savings number is built, and what it deliberately leaves out.
- Applies to
- Reports generated with the verified savings model (“How we got this number” panel present)
- Last updated
- August 2026
- Tax tables
- Federal and state income-tax tables — see the tax year shown in your report (the tables in force when it was generated)
- Questions
- support@reloc8te.com
What’s verified vs approximate
A report mixes three kinds of content. They are labeled differently on purpose, and the label tells you how much weight to put on the figure.
Verified
Computed by a deterministic calculator from a named data source — income tax (tax engine), property tax (Zillow ZHVI × the county’s effective rate from Census ACS medians), veteran exemptions (state rules), rental cash flow, and the comparison metrics stamped with a provider such as BEA, Census, FBI or Zillow. These carry a Verified chip and a source name.
Approximate by design
Verified inputs still rest on assumptions — a metro-typical home value, a state-average tax rate, a given tax year’s tables. Every line in the breakdown lists its assumptions, and every figure on the site is labeled “approximate” for that reason.
AI estimate
Narrative sections, lifestyle scores and any metric the model supplied itself are marked AI estimate. They are useful context, not measurements. Financial metrics are never allowed to be AI estimates — an unverified financial figure is dropped rather than shown as a fact.
Data sources & refresh cadence
External data is fetched per city, cached, and refreshed on the schedule below. Where a city-level figure is not published we fall back to the county or state figure and say so in the report (for example “statewide index” on the cost-of-living tile). We do not fill gaps with guesses.
| Source | What it provides | Geographic grain | Refresh |
|---|---|---|---|
| U.S. Census Bureau — American Community Survey (ACS) | Population, median household income, age and housing tenure, broadband, earnings by occupation. | Place / county, with state fallback when a place is not covered. | Cached 30 days; ACS publishes annually. |
| Bureau of Economic Analysis — Regional Price Parities (RPP) | Overall price level relative to the U.S. average (100) — the basis of the cost-of-living percentage. | Metro area, with statewide index as fallback (flagged in the report as “statewide index”). | Cached 30 days; BEA publishes annually. |
| Zillow Home Value Index (ZHVI) | Typical home value for the metro — the basis of the property-tax line and the one-time equity comparison. | Metro (MSA) grain; a state-level value is used only when no metro value exists, and the property-tax line is then omitted rather than guessed. | Weekly ingest of Zillow’s monthly series. |
| FBI Crime Data Explorer (CDE) | Violent and property crime rates per 100,000 residents. | Reporting agency / state; coverage gaps exist where agencies do not report. | Cached 30 days; FBI publishes annually. |
| FEMA National Risk Index (NRI) | Relative natural-hazard risk ratings (flood, wildfire, hurricane, tornado and others). | County. | Cached 30 days; FEMA updates periodically. |
| U.S. Energy Information Administration (EIA) | Average residential electricity price. | State. | Cached 30 days; EIA publishes monthly. |
| Bureau of Labor Statistics (LAUS) | Unemployment rate. | Metro / county / state. | Cached 30 days; BLS publishes monthly. |
| U.S. Department of Education — College Scorecard | Published in-state tuition at nearby public institutions. | Institution. | Cached 30 days; published annually. |
| Open-Meteo | Climate normals (temperatures, rainfall, sunny days). | Coordinates of the city centre. | Cached 90 days. |
| NCES Common Core of Data (U.S. Dept. of Education, via the Urban Institute Education Data Portal) | Nearby PUBLIC schools — count, level, grade range, enrollment and student-teacher ratio. The federal school census, filed annually by the states. Private schools are surveyed separately and are NOT included. | Metro area, filtered to a ~10-mile radius around the city centre. | 2024 filing, cached 30 days. Where a state has not filed staffing counts for the current year, the student-teacher ratio falls back to the prior year and says so. |
| SchoolDigger | School rankings and test-score star ratings, plus PRIVATE schools, which the federal census does not survey. Used ahead of NCES where available; a report falls back to the federal census otherwise. | Radius around the city centre, ranked within the state. | Live lookup, cached 30 days. |
| OpenStreetMap (Overpass API) | Nearby recreation venues (parks, sports and community facilities). | Radius around the city centre. | Cached 30 days; community-maintained, completeness varies. |
| U.S. Census Bureau — ACS county property-tax medians (B25103 / B25077) | Effective property-tax rate: median real-estate taxes paid ÷ median home value, by county — the rate behind the property-tax line. Reflects what current owners pay; a new purchase at market value can run higher. | County, with the state-average rate table as fallback (named in the line's assumptions). | Cached 30 days; ACS publishes annually. |
| Tax Foundation — combined sales-tax rates | Combined state + local sales-tax rate (midyear 2026), with verified city rates where available. | State + average local; city where verified. | Updated with each Tax Foundation release. |
| API Ninjas | State sales-tax rate (shown as “state rate only, excl. local”). | State rate only (no local add-ons). | Cached 30 days. |
| RentCast | Approximate value and rent for a home you already own (when you add one). | Property address. | Cached 30 days. |
All third-party data may be delayed, revised, or contain errors, and is not independently verified by Reloc8te. Vintages are shown next to the figure where they matter (for example the BEA RPP year).
How the savings number is computed
The headline “Approximate Annual Savings” (or “Added Cost”) is the sum of the lines shown in the report’s “How we got this number” panel — nothing else contributes. Each line is computed on our servers by a calculator, not written by the AI model, and each carries its source and assumptions. Every destination in a report gets its own total, built the same way.
Income tax difference
- Computed by our tax engine from your household income, filing status and (where provided) itemized income sources, using the federal and state tables for the tax year shown in your report.
- Federal tax, FICA and self-employment tax are included so the federal side is consistent between the two locations.
- State tax for graduated-rate states uses a blended effective rate: the top marginal rate that applies to your income × 0.78. Flat-tax and no-income-tax states use their actual rate.
- Not included: local or city income taxes (for example New York City or Ohio municipalities), credits specific to your return, and state-specific treatment of retirement or military income beyond what the engine models.
Property tax difference
- Destination: Zillow ZHVI metro-typical home value × the county’s effective property-tax rate (Census ACS median real-estate taxes paid ÷ median home value). Origin: your stated home value (or the ZHVI typical value) × your county’s rate. Where no county figure exists, the state-average rate table is used and the line says so.
- County medians reflect what current owners pay; a new purchase at market value can run higher, and school-district and municipal rates vary within a county. Each line’s assumptions name the exact rates used.
- Homestead exemptions are not applied in the line (they vary by county and require application); they are called out in the narrative where relevant.
- If only a statewide home value exists for a destination, the property-tax line is omitted and listed under “Not included in this total” rather than computed from a guess.
Veteran property-tax exemption
- Computed from each state’s rules (full, tiered, proportional, credit or percentage-of-tax) applied to your VA disability rating and the destination home value.
- Exemptions must be applied for, usually with the county assessor or appraisal district, and some are income-tested; the line’s assumptions say so.
- Surviving-spouse carry-over is modeled where state law provides it; remarriage and cross-state moves generally end it.
What is NOT in the total, and why
- Cost of living — shown as a percentage only (see below). Converting an index to dollars needs a household spending figure we do not collect.
- Sales tax — the combined state + local rate is compared in the Taxes chart, but how much your household spends is not measured, so there is no honest dollar figure.
- Insurance, utilities, HOA dues, moving costs — not measured for either location.
- Rental cash flow from a home you keep is computed but shown separately: it does not change with where you move, so adding it would inflate every destination equally.
- One-time equity (your current home value minus the destination typical value) is shown separately and labeled one-time, never annual.
Whenever a line could not be computed, the report lists it under “Not included in this total” with the reason in plain language — that list is how you know what the headline leaves out.
Cost of living — why a percentage
We compare overall price levels using the BEA’s Regional Price Parities, where the U.S. average is 100. A destination at 114.2 against an origin at 98.6 is about 15.8% more expensive overall. That percentage is a measured, published comparison. Turning it into “$X per year” would require knowing how much your household spends on price-sensitive goods — a figure we do not ask for — so any dollar conversion would be an assumption dressed as a measurement. The report therefore shows cost of living as a percentage tile, keeps it out of the dollar total, and notes when the index is statewide rather than metro-level.
The What-If calculator is the one place a dollar cost-of-living line appears. It is labeled illustrative and uses a stated rule of thumb (28% of income spent on price-sensitive goods, capped at $150,000, with housing stripped out) so you can see direction and rough scale while moving the sliders. It is not part of the report headline.
Confidence levels
Confidence is earned by the calculators, not self-reported by the model:
- High
- Both the income-tax line and the property-tax line were computed from verified inputs.
- Medium
- One of the two was computed; the other is listed under “Not included” with its reason.
- Low
- Neither could be computed, or an automated accuracy check failed. When a check fails, the report lists the findings under the confidence pill (“Why confidence is low”).
What “AI estimate” means
The narrative parts of a report — section summaries, neighborhood suggestions, lifestyle-match scores, alternative cities — are written by an AI model from the verified data plus its general knowledge. Where the model supplies a number itself, it is stamped AI estimate in amber and carries no source. These figures are unverified and should be treated as context to check, not as data. Alternative cities never show a savings figure, because none was computed for them.
Known limitations
- Tax tables follow the tax year shown in your report; a later year’s brackets, standard deduction and credits may differ.
- State income tax uses a blended effective rate for graduated states rather than your full state return; local income taxes are excluded.
- Property tax uses metro-typical home values and county-median effective rates (state-average where no county figure exists); your actual bill depends on the specific parcel, taxing districts, purchase price and exemptions.
- Cost-of-living indices are metro- or state-level and lag by a year or more; they cannot see differences between neighborhoods.
- Crime, school and hazard data have reporting gaps and are relative indicators, not predictions.
- Home values and rents are market estimates that move monthly.
- Veteran exemptions change by legislative session and usually require a timely application; confirm with the county before relying on one.
- Reports generated before the verified savings model was introduced show a model-authored breakdown (tagged as such) or none at all.
Approximate, for planning purposes only — not financial, tax, or legal advice. Actual results vary.
Questions about a specific figure? Email support@reloc8te.com with your report link. See also our accessibility and security pages.
