Browser extension
The listing shows the price. We show the cost.
On a listing at any of the big portals, one click opens the transfer tax, the real acquisition cost, and what's left at the end of the month. Nothing to copy, nowhere to go.
In review at the Chrome Web Store. Until then, paste the listing text on the site — the analysis is exactly the same.
Works on
Apartamento T2 remodelado em Arroios, com varanda e elevador
Transfer tax
Portuguese resident
€19,300
Non-resident
€30,000
Total cost
€425,357
Price €400,000 + €25,357 in tax and conveyancing.
Yield
Gross
4.4%
Net
3.3%
On €1,479/month — INE median, not the listing's rent.
Monthly cashflow
-€533
After Category F income tax at 10%, mortgage and costs.
Market
€4,706/m²
3% below the Lisboa median (€4,865/m², INE 2026-Q2).
Short-term rental
Needs authorisation
Example: an 85 m² two-bed in Arroios at €400,000. Computed right now by the same engine as the site.
01What you see
Six numbers the listing never shows
The portal shows the price and the floor area. Everything that decides the purchase is in the column below.
Transfer tax, both residences
Resident and non-resident side by side. The gap is usually the largest number on the page.
Total acquisition cost
Price plus IMT, stamp duty, deed and registration. The real cheque.
Gross and net yield
On the concelho's market rent, not on the rent the portal is asking.
Monthly cashflow
After income tax at the correct Category F rate, the mortgage, and every cost.
Short-term rental
Whether that freguesia still takes new registrations — or is under containment.
Market position
The listing's €/m² against the INE median for the concelho.
02How long it takes
Three seconds
No copying addresses, no extra tabs, nothing to type.
Open the listing
On any of the six portals.
Click the icon
The panel opens over the page, numbers already run.
Decide
Save it to your pipeline, or close it and move on.
03Why you can trust the numbers
What we do differently
Three decisions taken against our own short-term interest, and the reason to believe the rest.
We never render the listing
The panel shows enough to recognise the property and links you back to the portal. We send them qualified traffic rather than taking their page.
Rent comes from INE
Portals divide asking price by asking rent, which inflates the yield. We use the concelho's median for new contracts, and say so on the row itself.
The maths runs on the server
The panel uses the same engine as the site. When the budget moves a tax band, the numbers change that day — with no extension update.
04Permissions
What the extension can and cannot do
The question your browser is about to ask, answered before it asks it.
It reads the page you have open
Price, area, type and area of town. Nothing else.
It only runs on the six portals
Anywhere else, it does not run at all.
No account required
Only to save a deal to your pipeline.
We keep no browsing history
What is sent is the listing you are looking at, and only when you click.
05The rest
Questions
Yes. Solvo's calculators are free and so is the extension. You pay to save, compare and track a portfolio.
The listing shows the price. We show the cost.
In review at the Chrome Web Store. Until then, paste the listing text on the site — the analysis is exactly the same.