Vontari

Documentation

Understand how Vontari computes relocation cost analysis, or integrate our comparison engine into your own application via the REST API.

Quickstart

Enter two cities and get a cost comparison in under 3 minutes.

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Regional Price Parities

How we convert nominal salary to real purchasing power using BEA RPP indices across 8 categories.

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Tax Burden Model

Federal, state, local income, property, sales, and vehicle taxes -- all modeled for your filing status.

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Housing Differential

Rent vs. own scenarios using HUD FMR and Census ACS home values with property tax trajectory.

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Monte Carlo Simulation

10,000 simulations varying appreciation, inflation, property tax, healthcare costs, and salary growth.

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Climate Risk Overlay

Wildfire, flood, hurricane, and earthquake risk scoring for your destination using FEMA data.

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API Endpoints

POST/v1/compare
GET/v1/metros/search
GET/v1/metros/:id
GET/v1/taxes/:state
POST/v1/signup
POST/v1/login
POST/v1/checkout

Authentication

All API requests require an API key passed via the X-API-Key header.

curl https://vontari-api.smarttechinvest.com/v1/metros/search?q=austin \
  -H "X-API-Key: von_your_api_key_here"

Regional Price Parity Engine

For each metro pair, we adjust your salary using BEA RPP indices across 8 categories: housing, food, transport, healthcare, education, apparel, recreation, and other goods/services. This produces a real purchasing power comparison, not a simple average index ratio.

The RPP framework is based on Aten (2017) and Moretti (2013) real wage inequality methodology, which adjusts for both price levels and expenditure weights by income group.

Total Tax Burden Calculator

We model six tax dimensions: federal income tax (marginal brackets), state income tax (9 states have zero), local income tax (where applicable), effective property tax rates (county-level), sales tax (state + local combined), and vehicle registration/excise taxes.

All brackets use current-year IRS and state data from the Tax Foundation. Filing status (Single, MFJ, HoH) and household deductions are fully modeled.

Monte Carlo Simulation

Rather than a single point estimate, Vontari runs 10,000 simulated future scenarios varying housing appreciation rates (FHFA HPI variance), utility rate escalation (EIA state data), property tax reassessment timing, healthcare cost inflation (BLS medical CPI), and salary growth trajectories.

The simulation produces confidence intervals for 1-year, 3-year, 5-year, and 10-year time horizons -- so you can see both the expected outcome and the range of possible outcomes.