Clara Cars ISV & IUC Calculator

Add a free Portuguese vehicle-tax calculator to any page or post. Visitors enter engine size, CO₂, fuel and registration year and get an instant estimate of:

• ISV — Imposto Sobre Veículos (one-off import/registration tax)
• IUC — Imposto Único de Circulação (annual road tax)

The figures are a maintained estimate, cross-checked against the official Autoridade Tributária (AT) tables — not the official AT figure and no substitute for the AT simulator or a despachante. The calculation is open source (MIT): https://github.com/claracarspt/calcs

Available in Portuguese, English, Russian and Ukrainian.

How to use

• Shortcode: [claracars_isv] — optional attributes lang (pt|en|ru|ua), height, width. Example: [claracars_isv lang="en" height="400"]
• Block: add the “Clara Cars ISV & IUC Calculator” block and pick the language in the sidebar.

Privacy

The calculator is loaded in an iframe from claracars.pt. No personal data is collected by the calculator — visitors enter only vehicle parameters and get back numbers. See https://claracars.pt/en/privacy

External services

This plugin embeds a calculator widget served from claracars.pt (operated by Clara Cars). It relies on that external service to function.

• What it does: the plugin outputs an <iframe> that loads https://claracars.pt/embed-isv. Inside that widget, the vehicle parameters a visitor enters — engine size (cc), CO₂, fuel, registration year and condition (used/new) — are sent to the Clara Cars public API (https://claracars.pt/api/public/isv) to compute the tax estimate.
• What is sent: only the vehicle parameters listed above. No personal data is collected or transmitted by the calculator.
• When: when a visitor views the page containing the calculator and when they press “Calculate”.
• Provider: Clara Cars — https://claracars.pt
• Terms of service: https://claracars.pt/en/terms
• Privacy policy: https://claracars.pt/en/privacy

The calculation code is open source (MIT) and can be self-hosted instead: https://github.com/claracarspt/calcs