What they are for, and what they are not
These are built so you can understand the mechanics of your tax in two minutes and check whether a figure somebody has given you makes sense. They do the arithmetic in front of you and print the formula below it: there is no black box, and nothing is rounded in our favour.
They do not replace a return. A real file has details no calculator captures: ownership that changed partway through the year, works that might be repair or might be improvement, a residence certificate that expired in March, earlier years filed wrongly that carry balances forward, two owners with different countries of residence. If any of those describe you, the number here is a starting point rather than a conclusion, and treating it as a conclusion is how people end up filing something they then have to correct.
None of them stores anything
The whole calculation happens in your own browser. Nothing is sent to a server, there is no sign-up, no tracking cookie, and nobody will write to you because you used a calculator. Close the page and there is no trace. That is a deliberate design decision, not an accident: we would rather the tool be useful than be a lead form wearing a disguise.
Which one applies to you
| If you are… | Start with |
|---|---|
| A non-resident owner of a Spanish property | form 210, which calculates the rental charge and the deemed-income charge together |
| An owner letting short-term in Spain | the apportionment calculator, then the 10 % VAT calculator to see what the coming VAT would do to your figures |
| Self-employed and behind on a return | the surcharge calculator, before the next complete month adds a point |
| Wondering what delegating it would cost | the fee calculator |
| Facing a deadline you are not sure about | the tax calendar |
Read the guide next to the number
A figure on its own rarely settles anything. Each calculator sits alongside a guide that explains where the rule comes from and what the exceptions are: nights let and apportioning costs, the 10 % VAT on holiday lets, deductible costs, and the full set in the guides index. If your situation is at all unusual, the guide will tell you why the calculator is only approximately right for you.
How they are kept up to date
Each calculator states the rates, thresholds and deadlines it applies, and the rule they come from. When a ministerial order changes something — as happened in June 2026 with the form 210 filing windows — the figures are updated and the review date is noted. If a number here does not match what you have been told somewhere else, write to us: either this is wrong or the other one is, and we want to know which. The one thing we will not do is quietly leave a stale figure up because nobody complained.
Where the figures come from
Each calculator applies a specific rule rather than a rule of thumb. The 19 % and 24 % rates and the 1.1 % and 2 % deemed-income percentages come from the non-resident income tax act; the filing windows from the ministerial order that changed them in June 2026; the surcharge scale from article 27 of the General Tax Act as amended in 2021; the 10 % VAT on holiday stays of up to 30 nights from article 7 of Royal Decree-law 26/2026, which Congress voted down on 2 October 2026 and which the calculator keeps as the rule to come, and the exemption that applies today from article 20.Uno.23 of Act 37/1992. Where a calculator relies on something unsettled, it says so on the page rather than in a footnote.
The limits worth stating plainly
A calculator applies a rule to the numbers you type. It cannot tell you whether those numbers are the right ones — whether the rateable value on your IBI bill has been revised, whether that invoice was really in your name, whether the nights you counted included the departure day. Nor can it tell you whether a different structure would serve you better, or whether an earlier year needs correcting first. Those are questions with facts behind them, and they are what a conversation is for. If you would rather simply hand the whole thing over, pricing says what that costs and how it works says what happens next.
Whatever any of these returns is an indicative estimate: it does not replace the return itself, nor a proper look at your file. If your case has co-owners resident in different countries, a change of ownership partway through the year, or earlier years filed wrongly, the figure can sit a long way from the real one. Do not decide whether to pay, or whether to sell, on the strength of it alone.