Free Developer Tool

Embed ResidencyIQ tools on your site

Drop a live, cited state tax calculator or day-count checker into your page with one iframe. Free to embed, light and dark aware, no signup required.

One condition: keep the attribution link. See the terms below.

Embeddable Tool

State Tax Savings and Exposure Calculator

Estimated state income tax delta between two states at a given income, plus the audit exposure behind the savings.

Iframe snippet

<iframe
  src="https://residencyiq.app/embed/state-tax-savings-calculator?from=...&to=...&income=...&filing=..."
  width="100%"
  height="900"
  style="border:0;border-radius:8px;"
  loading="lazy"
  title="State Tax Savings and Exposure Calculator"
></iframe>

Optional query params (prefill)

from Origin jurisdiction slug, e.g. california

to Destination jurisdiction slug, e.g. texas

income Annual income, e.g. 250000

filing single or joint

Preview the embed Open the full tool page

Embeddable Tool

183 Day Rule Checker

Enter days or build date ranges and get a cited verdict against a specific state’s actual statutory residency test.

Iframe snippet

<iframe
  src="https://residencyiq.app/embed/183-day-rule?state=..."
  width="100%"
  height="760"
  style="border:0;border-radius:8px;"
  loading="lazy"
  title="183 Day Rule Checker"
></iframe>

Optional query params (prefill)

state Jurisdiction slug to preselect, e.g. new-york

Preview the embed Open the full tool page

Terms

Free to embed on any site, personal or commercial, no signup and no fee.

The "Powered by ResidencyIQ" link at the bottom of every embed must stay visible and unmodified. It is rendered by ResidencyIQ inside the iframe and cannot be styled away, hidden, or removed by the embedding page’s own CSS.

Do not frame the embed inside another iframe or proxy in a way that strips or obscures the attribution link.

General information, not tax or legal advice. ResidencyIQ may update the embedded tool’s content, styling, or behavior at any time; the iframe always reflects the current version.

ResidencyIQ is not responsible for how the embedding page positions, sizes, or surrounds the iframe.

Frame protection

Only the /embed/* routes are frameable. The rest of residencyiq.app sends a strict frame-ancestors policy and cannot be embedded, so only the two tools above will load in an iframe.

Prefer to pull the underlying numbers yourself instead of embedding a widget? Both tools are also available as a free, unauthenticated JSON API.

See the public API docs

Who this is for

Any site whose readers ask state tax or residency questions. A few examples:

CPA and tax advisor sites

Relocation and moving-company blogs

RV, van-life, and digital nomad communities

Personal finance and FIRE blogs

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