The deposit isn't the only thing the mortgage won't pay. There are the purchase taxes and fees, due in cash on signing day. This calculator uses your region's rates, verified one by one against the official gazette.
That is the real question, and a calculator doesn't answer it. Seeing month by month whether your current saving pace gets you there by the date you want to sign does. In Cuéntamo you set the goal with the full figure and check it without rebuilding the spreadsheet every time.
Start for free → See Cuéntamo for the homeSince 2022, the taxable base for transfer tax on a property is the reference value assigned by the Catastro, not the price in the deed. The price only wins if it is higher: the larger of the two figures is taken, so the rule never plays in your favour.
That's why the calculator asks for both. Your property's reference value is public and takes two minutes to look up on the Catastro's electronic office with the cadastral reference. Checking it before signing the deposit contract is the difference between knowing what you'll pay and finding out with the tax return in front of you.
Transfer tax is set by each region and runs from 6% in Madrid to 13% in the top band of Catalonia and the Balearic Islands. Five regions don't apply a flat rate but a scale by value, and each computes it differently. On top of that, in the three Basque chartered territories a home is not taxed at the 7% that applies to property in general, but at 4%, and at 2.5% if it is no larger than 120 m².
Most regions also have reduced rates for main homes, young buyers, large families or disability, each with its own value and income limits. The calculator applies them and tells you which condition you would have to meet.
The full worked numbers, with the legal references at the foot, are in the taxes and costs of buying a home.
Rates verified in September 2026, article by article, against the consolidated text of each regional and chartered rule.
This tool is indicative and does not replace professional advice. Notary, registry and conveyancing costs are estimates and depend on the value and the specific deed. Reduced rates carry further requirements (effective residence periods, income caps, sale of the previous home) that are not checked here. When in doubt, ask your adviser or your territory's tax authority.