Title: flatin.pt Author: flatin Published: October 20, 2026 Last modified: October 20, 2026 --- Search plugins ![](https://ps.w.org/flatin-pt/assets/banner-772x250.png?rev=3757375) ![](https://ps.w.org/flatin-pt/assets/icon-256x256.png?rev=3757375) # flatin.pt By [flatin](https://profiles.wordpress.org/flatin/) [Download](https://downloads.wordpress.org/plugin/flatin-pt.1.0.3.zip) * [Details](https://wordpress.org/plugins/flatin-pt/#description) * [Reviews](https://wordpress.org/plugins/flatin-pt/#reviews) * [Installation](https://wordpress.org/plugins/flatin-pt/#installation) * [Development](https://wordpress.org/plugins/flatin-pt/#developers) [Support](https://wordpress.org/support/plugin/flatin-pt/) ## Description Two shortcodes for sites that write about buying property in Portugal. * `[flatin_imt value="250000"]` — what a purchase costs on top of the price: IMT, stamp duty and the price of registering the purchase. * `[flatin_imi concelho="porto"]` — the yearly property tax (IMI) rate for a municipality, with the tax year next to it. **Rendered on your server, into your page.** No iframes and no client-side drawing: the output is part of your HTML, so it is styled by your theme, readable without JavaScript, and visible to search engines. **Where the numbers come from.** IMT is calculated from the official 2026 tables. IMI rates were harvested from the Autoridade Tributária portal and then verified line by line against that same source — all 308 municipalities. Where a municipality sets no single rate (it sets one per freguesia instead), the plugin says so rather than printing a zero. The registration line is not a guess either: it is the published price of the Casa Pronta counter of the Ministério da Justiça for one registration act. It does not cover the purchase contract at a notary or a solicitador, and the shortcode says so under the table. #### Shortcode options * `[flatin_imt value="250000" territory="regioes_autonomas"]` — the Azores or Madeira scale (default: `continente`, mainland Portugal). * `[flatin_imt value="250000" primary="no"]` — not the buyer’s own permanent home( default: `yes`). * `[flatin_imt value="250000" young="yes"]` — the reduced IMT table and the stamp duty deduction for buyers aged 35 or under buying their first own permanent home( default: `no`). * `[flatin_imt value="250000" vpt="180000"]` — the VPT (valor patrimonial tributário) from the caderneta predial, if known. IMT and stamp duty are charged on the higher of the contract price and the VPT, and the answer says which one it used. * `[flatin_imi concelho="porto" vpt="180000"]` — also shows the yearly IMI for that taxable value (VPT). `concelho` takes a name or the four-digit code. #### Credit link The credit link is **off by default**. If you would like to credit the source, switch it on in **Settings flatin.pt**: results then show a small “Calculated by flatin.pt” line with a link. While it is off, the plugin adds no link to flatin. pt anywhere in your pages — not even when the service is unreachable — and the calculators work exactly the same either way. #### Who we are flatin.pt is a lead-generation platform for property in Portugal. **It is not a real-estate agency and holds no AMI licence ; the service itself is provided by licensed agencies. The results are estimates from official tables, not tax advice. This plugin sells nothing and collects nothing. ### External services This plugin connects to the flatin.pt API (`https://flatin.pt/api/v1`), run by flatin.pt, to calculate taxes and look up IMI rates. The calculations are done there so that one maintained tax table serves every site. Without this service the shortcodes cannot show results. **When.** Only when a page containing a shortcode is rendered and the answer for that exact input is not already cached in your site’s database. Answers are stored as transients: IMI rates for one day, IMT calculations for one hour, invalid input( for example a misspelt municipality) for one hour. No request is made on activation, from the settings screen, or on pages without a shortcode. **What is sent.** * `[flatin_imt]`: an HTTPS POST to `https://flatin.pt/api/v1/imt/calculate` with the price, the VPT if the shortcode gives one, the territory, and the two yes/ no options from the shortcode. * `[flatin_imi]`: an HTTPS GET to `https://flatin.pt/api/v1/imi/rates/{municipality}` with the municipality name or code from the shortcode. The taxable value (`vpt`) is not sent: the yearly amount is calculated on your server. Each request identifies the plugin with the User-Agent flatin-pt-wordpress/1.0.3( +https://flatin.pt/). **Nothing about your visitors is sent: no visitor IP address, page URL, referrer, cookies or identifiers. As with any HTTPS request, the flatin. pt server sees the IP address of your web server; it is kept in server logs as described in the privacy policy. * Terms of use: https://flatin.pt/en/legal/termos-utilizacao/ * Privacy policy: https://flatin.pt/en/legal/privacidade/ * API documentation: https://flatin.pt/en/tools/api-and-data/ ## Screenshots [⌊IMT breakdown and IMI rate rendered inside a post with the default theme; the second IMI block is a municipality that sets no single rate.⌉⌊IMT breakdown and IMI rate rendered inside a post with the default theme; the second IMI block is a municipality that sets no single rate.⌉[ IMT breakdown and IMI rate rendered inside a post with the default theme; the second IMI block is a municipality that sets no single rate. [⌊Settings → flatin.pt: the opt-in credit link (off by default), the shortcodes, and what leaves your site.⌉⌊Settings → flatin.pt: the opt-in credit link (off by default), the shortcodes, and what leaves your site.⌉[ Settings flatin.pt: the opt-in credit link (off by default), the shortcodes, and what leaves your site. ## Installation 1. Install the plugin from the Plugins screen, or upload the `flatin-pt` folder to`/ wp-content/plugins/`. 2. Activate it. 3. Put a shortcode into any post, page or widget, for example [flatin_imt value=”250000″]. 4. Optional: turn on the credit link in **Settings flatin.pt**. ## FAQ ### Does it work without JavaScript? Yes. The whole output is rendered on the server. ### Does it slow my page down? The first render of a given input makes one HTTPS request with a five-second timeout; after that the answer is served from your own database until the cache expires. The stylesheet loads only on pages that actually use a shortcode. ### What happens if flatin.pt is unreachable? The block shows a short notice that the calculation service did not answer, and the rest of your page renders as usual. If you turned the credit link on, the notice also links to the calculator on flatin.pt. ### Does it collect data about my visitors or set cookies? No. The plugin reads nothing about the visitor and sets no cookies. See “External services” above for exactly what is sent. ### Can I use it for a municipality that has no single rate? Yes, and the plugin will tell your readers exactly that. Printing a zero there would be untrue. ### Is it available in Portuguese? Translations are delivered through translate.wordpress.org. On a site set to Portuguese, the output and the settings screen switch to Portuguese once the pt_PT translation is published there. ### What is removed when I delete the plugin? The credit-link setting and every cached answer the plugin stored. ## Reviews There are no reviews for this plugin. ## Contributors & Developers “flatin.pt” is open source software. The following people have contributed to this plugin. Contributors * [ flatin ](https://profiles.wordpress.org/flatin/) [Translate “flatin.pt” into your language.](https://translate.wordpress.org/projects/wp-plugins/flatin-pt) ### Interested in development? [Browse the code](https://plugins.trac.wordpress.org/browser/flatin-pt/), check out the [SVN repository](https://plugins.svn.wordpress.org/flatin-pt/), or subscribe to the [development log](https://plugins.trac.wordpress.org/log/flatin-pt/) by [RSS](https://plugins.trac.wordpress.org/log/flatin-pt/?limit=100&mode=stop_on_copy&format=rss). ## Changelog #### 1.0.3 * Translations are no longer bundled; WordPress loads them from translate.wordpress. org. #### 1.0.2 * New `vpt` attribute for `[flatin_imt]`. IMT and stamp duty are charged on the higher of the contract price and the VPT; the table now says which one it was calculated on, and without a VPT says that a higher VPT would raise both taxes. * The Casa Pronta amounts in the note under the table come with the answer from flatin.pt instead of being written into the plugin. #### 1.0.1 * The third line of the purchase table is named for what the figure actually is: the published price of registering the purchase at the Casa Pronta counter, not an estimate for the deed. The note under the table now names that source, says the contract at a notary or a solicitador is charged separately, and warns that buying with a mortgage costs more. #### 1.0.0 * First release: `[flatin_imt]` and `[flatin_imi]`, server-side rendering, transient caching, Portuguese translation, opt-in credit link (off by default). ## Meta * Version **1.0.3** * Last updated **10 hours ago** * Active installations **Fewer than 10** * WordPress version ** 6.0 or higher ** * Tested up to **7.1.3** * PHP version ** 7.4 or higher ** * Tags * [calculator](https://wordpress.org/plugins/tags/calculator/)[portugal](https://wordpress.org/plugins/tags/portugal/) [real-estate](https://wordpress.org/plugins/tags/real-estate/)[tax](https://wordpress.org/plugins/tags/tax/) * [Advanced View](https://wordpress.org/plugins/flatin-pt/advanced/) ## Ratings No reviews have been submitted yet. [Your review](https://wordpress.org/support/plugin/flatin-pt/reviews/#new-post) [See all reviews](https://wordpress.org/support/plugin/flatin-pt/reviews/) ## Contributors * [ flatin ](https://profiles.wordpress.org/flatin/) ## Support Got something to say? Need help? [View support forum](https://wordpress.org/support/plugin/flatin-pt/)