We are going to explain to you what the 2025 Income Simulator is and how it works, which will help you know if the declaration you are going to make in 2026 will pay or return. According to the Income calendar 2025the campaign to regulate the last fiscal year will begin next April 8, and you can now begin to prepare for what is to come.
We will start this article by explaining what exactly this simulator is, so that you understand what you can expect from it. And then, we will explain step by step how you can use it to obtain your simulation. You should know that you fill in the simulator data on your own, so it is a good idea to look your tax details to know what to put.
What is the Income simulator
Every year we have to file the Income Tax return to regulate our accounts from the last fiscal year, and this may result in you having to pay money to the Treasury or having them pay you compensation. This result depends on some variants, and this simulator allows you write your data and know a final result to get an idea of how the statement will come out.
It is a non-binding simulatorwhich means that you can do all the tests you want with it. You can enter real or false data, and the result does not affect the draft of the Income that will be generated in a few days. The Treasury will also not know or take into account what you write. It is simply a website where you can experiment and see how the results vary.
In fact, you will not even have to identify yourself as a citizen on the website, which means that none of the written data is added to any type of profile. But this also has a negative side, and that is that The data that the Treasury has about you will not be loaded because you are not going to use your citizen account.
This means that you will have to add them by hand. As we have told you, you can access your tax data and use it to fill it out. Another thing to keep in mind is that the simulator is not something that you need to use if you don’t want to, it is simply a tool that you have at your disposal in case you need it or have questions.
How to use the 2025 Income simulator
To use the simulator, you have to enter the website with all the tools of the Income campaign. The address is headquarters.agenciatributaria.gob.es/Sede/irpf/gestiones-irpf.htmland in it you have to click on the option Rent Web Open Simulator that will appear in the box Simulator, Stock Portfolio and other Services.
If you don’t see the option, you can also enter directly through this link. And once inside the website, you have to choose create a new declaration or load an already created one. If this is the first time you use the simulator, create a new one. The simulator will then allow you to save the drafts you generate on your computer to load them whenever you want and resume work.
When you start a new one, you will enter the identification data page. In it, you must write your personal information, that of your spouse if you have one, and that of your children or disabled elderly people in your care. After filling it out, you must click on the button Accept that you have at the bottom.
By accepting you will go to a page with the mock draft and all its fields blank. Now it will be your turn fill everything by hand clicking on each field to enter its corresponding section and write the numbers. There will be pencil icons to indicate sections that you fill out by hand, while others are filled in automatically based on the data you have entered.
And you’ll be on your way. From now on, what you have to do is fill out all the information in the declarationand then you can see the results. Above, you will also have the options of Validate and Keepand if you save them you can reopen it later whenever you want with the loading option at the beginning.
In Xataka Basics | Who does not have to file the 2025 Income Tax return: minimum income and other conditions for 2026
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