Filing your tax return is no longer that tedious process that forces you to sit in front of a computer or make an appointment at an office. Today, You can file your tax return directly from your mobile phone. Thanks to the official app of the Tax Agency and the Renta WEB service, without leaving your sofa and with all the guarantees.
If you're overwhelmed by all the options (app, Cl@ve, certificate, Bizum, installment payments, refunds, etc.), don't worry: in this guide you'll find Step-by-step instructions on how to file your tax return from your mobile phoneWhat you need to identify yourself, how to review your draft, what payment or refund methods you have, and what messages from the AEAT (Spanish Tax Agency) you should be aware of to avoid surprises.
What you need to file your taxes from your mobile phone
The first thing to understand is that the Tax Agency allows file your tax return from your mobile phone or tablet through its official app, available for both Android and iOS. If you already have it installed, it's a good idea to check that you have the latest version, because each campaign introduces small changes and improvements.
To use the AEAT app and Renta WEB from your mobile phone, the key is... electronic taxpayer identificationThe Administration itself offers several alternatives to adapt to each user: Cl@ve (including Cl@ve Móvil and Cl@ve PIN), electronic certificate or DNIe, Income Tax reference number and even European identification systems (eIDAS) for EU citizens.
From the app you can also access other support services, such as Virtual assistance from the Tax Agency or information about the "We'll call you" telephone service, in case you prefer to be assisted by telephone after making an appointment.
Access to the Tax Agency app and Renta WEB
Once the AEAT app is installed and updated on your mobile, the next step is identify the holder of the declarationYou have several ways to access both the app and Renta WEB from your mobile browser:
1. Access with Cl@ve Móvil
It's one of the most convenient methods using your mobile phone. Within the "Featured Services" section of the Income Tax website, by tapping on "Draft/Return Processing Service (Direct Income Tax and Online Income Tax)," you can select "Cl@ve Móvil." An authentication screen will open with a verification code, expiration date, and a QR code.
If you use the Cl@ve app, you just have to Click on the option to scan the QR code Focus your camera on the code displayed in the browser. Then, verify that the verification code and the organization match, confirm in the app, and you will see the message "Authentication successful." You will automatically be granted access to the tax services, now authenticated.
If you can't read the QR code or don't feel like scanning it, you can select the option to Continue with Cl@ve mobile without reading the QR codeIn that case, you will need to provide your National Identity Document (DNI) or Foreigner's Identity Number (NIE) and the verification information: the expiry or issue date in the case of a DNI (or 01-01-9999 if it is permanent) or the support number if it is an NIE. After correctly entering the information and pressing "Continue," the authentication request will appear, which you will need to confirm in the Cl@ve app.
There is also the option of receive a 6-digit PIN via SMSAfter about 60 seconds, the "ACCESS WITH A PIN BY SMS" button will be activated; when you press it, they will send you the PIN that you must write in the corresponding box to access.
2. Access with electronic certificate or electronic ID card
If you have an electronic certificate installed on your mobile phone (or use it through a compatible browser) or an electronic ID card, you can use them to identify yourself. From "Income Tax 2025", under "Featured Procedures", go to "Draft/Return Processing Service (Direct Income Tax and Online Income Tax)", choose "Certificate or Electronic ID Card" and select the certificate you want to use.
After identification, the system will ask you if you want to take action. in my own name or as a representativeThen you will enter your file and you will be able to access the "Draft/Declaration (Income Tax WEB)" service within "Available Services".
3. Access with Income Tax Reference Number
Another option is to manage the income using the reference number. This method allows Check tax information, view the draft and process the declarationRegardless of the outcome (payment due, refund due, or zero tax), the Tax Agency indicates that the required information to obtain the reference is the amount in box 505 of the previous year's income tax return, although it can also be obtained by accessing the system with a digital certificate, electronic ID card (DNIe), or Cl@ve PIN.
The reference consists of 6 characters which you can note down and reuse for other tasks during the campaign. Once entered into the system (app or website), you will have access to Renta WEB and the rest of the services related to the campaign.
4. Access as an EU Citizen (eIDAS)
For those residing in another European Union country, there is the option of identification as “EU Citizen (eIDAS)”This is the European authentication system that allows you to use your home country's identification mechanisms to access public services in another member state. In this way, an EU citizen can access the Spanish Tax Agency's (AEAT) online portal and manage their income tax return using their European credentials.
Additionally, the campaign also includes telephone support through the service “We called him”This service requires an appointment and can be requested through the AEAT website, the app, or official phone numbers. While it's not a "purely mobile" process like the app or Renta WEB, you can manage it entirely from your smartphone.
Steps to file your tax return using the AEAT app
The AEAT app offers a great advantage: for many taxpayers, allows you to file your tax return “in just one click” If the Tax Agency has all the necessary data and no additional information is required, it's still important to review the draft before confirming it.
Once you are logged into the application, enter the section “Administrations” or “Income” and select the corresponding tax year (for example, “Income Tax 2024” or “Income Tax 2025”). From there, you will see options such as “Continue with the filing” or “Processing of draft/declaration”, depending on the text displayed in your version of the app.
Before proceeding with the rent calculation, you will need to confirm your tax addressThe app will display the owner's identification details and current address. If everything is correct, tap "Confirm"; otherwise, select "Modify" to update the information. In the property ownership section, the data from the previous year will be loaded by default, and if you indicate that you are a tenant, you will need to enter the landlord's tax identification number (NIF).
After confirming the address, the application will generate a proof of ratification And you can continue with the process. This is a key step, because without that confirmed tax address, the tax return cannot be finalized.
Next, the app will show you the statements available in your work sessionThe individual return of the taxpayer and, if applicable, that of their spouse and children who are part of the family unit. The system can calculate which option is more advantageous (individual or joint) and will tell you.
You can continue with a previously saved work session or, if one doesn't exist, request that your tax returns be calculated from scratch. If you have a spouse, they will also need to be logged in to the app. If they aren't already, you can... identify him at that moment or simply request the calculation of the individual declaration.
At this point, the application also allows ratify the tax domicile of the spouse and descendantsIf they are not ratified, you can modify and confirm them from your mobile phone.
It's possible that your marital status isn't listed in your tax information. In that case, the app will ask you to select one of the following options: single, widowed, separated, or divorced. If you are married or want to add dependents or ascendants to assess your family unit, you'll need to click "Continue to Renta WEB" and complete that information in your browser.
Review data, draft and result of the declaration
Once the app has the necessary tax information, you move on to a summary of statements where you can see the result for each filing method (individual taxpayer, spouse, joint). The application indicates which option is most advantageous and displays the ID/NIE numbers of the members, whether or not there is an obligation to file a tax return, and a button to access individual tax data.
On this screen you can use the function of PDF Preview to see how the tax return would look. The document will include the watermark “Draft not valid for submission,” but it can be used for detailed review. It is advisable to check if the return results in a refund (usually in green), a payment due (in red), or a zero balance (0 in black).
If the system detects that it is necessary provide additional information (For example, data not reported by third parties, regional tax deductions, mutual insurance companies, etc.), the app will notify you and redirect you to Renta WEB to complete that information. For members of mutual insurance companies who have not submitted the application form for a refund of personal income tax (IRPF) on contributions to mutual insurance companies in accordance with the specific regulations, the app will display a notification inviting them to submit that form at that time.
Before submitting the declaration, the application also allows you to review and modify it. the IBAN of the bank account and the tax allocations (Catholic Church and Social Purposes). You can activate or deactivate each box by moving the selector to “Yes” or “No” and clicking “Save changes”.
In the notifications section, if, according to the Tax Agency's records, you are not required to file a tax return, a message will appear indicating this. Even so, you can choose to file voluntarily if you are due a refund or if you wish to do so for other reasons.
Payment and refund options from your mobile device
When the result is a return, you will be able to choose how you want to receive the moneyThe usual method is to transfer to a Spanish bank account, where the IBAN used in the previous transaction will be displayed by default, but you always have the option to change it. It is also possible to specify an IBAN from a financial institution within the EU/SEPA zone.
There is also the possibility of request a refund from a foreign financial institution outside the EU/SEPAIn that case, you will need to fill in your account number, bank, city, address, and country. The SWIFT/BIC code is optional, but it's recommended to include it if you have it. The country you specify cannot be within the EU/SEPA area.
If the result of your tax return is a payment due, you will have to decide whether you split the payment into two installments or make a single paymentDuring the direct debit period (until June 25th, according to the usual campaign dates), the system defaults to payment in two installments, both debited by direct debit. Once this direct debit period ends, the default option is usually payment in full with a bank/savings bank deposit slip.
From the app or from Renta WEB you can modify both the installment payments as a form of paymentClicking on “Change” in the “Payment method” section opens the different available combinations:
Payment in two installments
Common options:
- Set up both deadlines for direct debit into a bank account (the first payment in June and the second in November, normally).
- First installment with electronic payment (card or Bizum, or by entering an NRC of a payment made previously) and second installment by direct debit.
- First installment by bank/savings deposit and second installment domiciled to account.
Single payment (not in installments)
You can choose:
- Direct debit in a single payment.
- Electronic payment by card or Bizumor recover a previous payment by entering the NRC that your bank has generated for you.
- Bank/Cash Deposit Document, which leaves the declaration pending payment at your financial institution.
A significant new development in the recent campaign is the possibility of pay with Bizum You can pay the rent directly through the online payment gateway. However, it's advisable to check the limits each bank applies to Bizum and the specific conditions for payments to public bodies to ensure the amount doesn't exceed the maximum allowed.
In the "Bank Account" section, you'll see the IBAN from the previous year, if applicable. You can change it by clicking "Change" and choosing either "To a Spanish account" or "To a foreign EU/SEPA account," then entering the new IBAN. The IBAN is validated when you save the changes, allowing you to correct any errors before submitting your return.
Using Renta WEB from your mobile device: data, validations and submission
In addition to the app, the Tax Agency offers the service Web rental accessible from the mobile browserwhere you can view and edit all sections of your declaration in more detail. Once you've identified yourself (by Cl@ve, certificate, electronic ID card, reference number, or eIDAS), you'll access your file and have several options.
If you previously accessed Renta WEB, a pop-up window may appear indicating that a saved return exists. You can choose to “Continue session” (retrieve the declaration already started) or by “New Declaration” to re-enter the tax data and start from scratch. You can also choose the language you want to work in.
If you have already filed a tax return for that year, the program will detect that a return has been filed and will offer you the option to “Modify submitted declaration” to correct errors or make necessary changes.
When you start with “New Declaration”, a screen will load with the Identifying information of the declarant and the family unitIf you only want the program to calculate the individual declaration of the account holder, you can check the specific box to ignore the other members in the calculations, although they will still be included as personal data.
If you are part of a family unit and do not check the box for individual declaration only, you will need to process the authorization of the data of the spouse and children who have obtained income, using a reference or Cl@ve. This way, calculations can be made comparing joint and individual taxation.
In the "Spouse Authorization" section, you can click the "Reference/Cl@ve" button. A pop-up window will appear requesting your spouse's reference or their identification via Cl@ve Móvil, using their National Identity Document (DNI/NIE) and verification information, plus confirmation from the Cl@ve app or their six-digit PIN via SMS. Once completed, the system will upload their information to the declaration.
There is also the figure of the seizure (100P)This allows access to the data of spouses or children receiving income without needing to enter their reference or Cl@ve Móvil at that moment. In these cases, pressing “Reference/Cl@ve Móvil” directly changes the status to “Authorized”.
From the identification data window you can modify the composition of the family unitYou can add or remove members, or correct marital status. Keep in mind that this information cannot be changed later, so it's important to review it carefully. Once verified, click "Accept." If any of the taxpayers are not required to file a tax return, Renta WEB will notify you.
After accepting the identification data, the system may display a screen of data transfer with additional informationHere you'll see what tax information is available to include in your return, and if you check the "Yes" box in the "Include" column, it will be added automatically. In some cases, you'll need to answer additional questions or provide some supplementary information.
If you don't need to enter additional information, Renta WEB will take you directly to summary of statementsIf there is data that has not been transferred, a window will be displayed with the details of what is missing for each taxpayer, so that you can complete it in the corresponding section later.
In the summary, you can check the results for the different options (individual, joint) and download a PDF with a preview of each one. The menu is accessible from the top. “Declaration sections”where you can review and complete all the boxes: income from work, capital, economic activities, capital gains and losses, deductions, etc.
Clicking on “Show options” will display additional buttons for consult identifying data, save the declaration on the AEAT servers or search for a specific boxYou also have a "Notes" button where you can add comments to guide you during the process.
Before filing your return, it's a good idea to use the tool "Validate"This tool checks for errors and warnings. Warnings don't prevent submission, but they recommend reviewing specific points. Errors, however, must be corrected before you can sign and submit. Clicking the "Go to Warning" or "Go to Error" buttons will take you directly to the section you need to correct.
Sometimes, during validation, the following may appear “Warnings” which require you to confirm that you have read them. You must check the "Read/Hide" box for the system to allow you to proceed. If you do not, a message will appear asking you to review the warnings before submitting the return.
When everything is in order and error-free, click “Submit declaration”. Keep in mind that mode you are selecting at that time (taxpayer, spouse, or joint). If you access it from the summary, the option you selected will be displayed; if you access it from the detailed view, you will have to manually select whether you are filing individually or jointly and which individual returns are included (taxpayer, spouse, children).
In the case of joint returns, it will be necessary Enter the reference or Cl@ve identification The spouse or children are authorized to sign and submit the form, unless a valid power of attorney exists. This requirement is independent of the access system used by the declarant.
Before final signing, you will be shown the relevant information from the tax return again (result, family members, Autonomous Community, payment or refund method, tax allocation, etc.). If you agree, check the "Agree" box and click "Sign and Submit".
When the shipment is completed successfully, a message appears confirming that The presentation was successful A Secure Verification Code (CSV) is generated. Additionally, a PDF is displayed with the first page of registration data (CSV, receipt, date and time, presenter details) and subsequent pages with the complete declaration submitted. You can save this PDF to your mobile device or print it from your browser.
In cases of debt acknowledgment (for example, if you have requested a deferral), on the response sheet you will see a link to "Process debt", from which you can choose between deferring, offsetting or paying, according to your needs and what the regulations allow at that time.
If you later return to “Renta WEB. Draft/Declaration Processing Service (Renta WEB)”, you will see the record with the recording of your statement and the filing date, along with the message that the declaration is being processed.
Filing your tax return from your mobile phone has become a completely viable and even majority option among taxpayers, thanks to the combination of the AEAT app, Renta WEB and the various electronic identification systemsAll you need is your smartphone, a thorough review of your tax information, adjustments to deductions and payment or refund methods, and in just a few minutes you can have your tax return filed with all legal guarantees and a PDF receipt ready to save.