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Complementary and corrective statements:

Correction and adjustment in tax management:  

In the field of tax management, supplementary and corrective declarations are important mechanisms that allow taxpayers to correct and adjust the information presented in previous declarations. These statements provide the possibility of correcting errors, omissions or discrepancies in the data reported to the tax administration. In this article, we will explore in detail what supplementary and corrective statements are, how they work and when they should be used.

Supplementary statements.

A complementary declaration is one that a taxpayer presents to add, modify or complete information in a declaration already submitted to remedy a damage to the treasury. It is used when it is detected that some relevant information has been omitted or is incorrect in a previous declaration. The main situations in which complementary statements can be submitted are:

1. Unreported income: If income was omitted from the original return, the taxpayer must file a supplemental return to include it and pay the corresponding taxes.

2. Deductions or credits not applied: If tax deductions or credits were forgotten in the original return, the taxpayer can file a supplemental return to apply them and reduce the tax burden.

3. Errors in tax settlement: If errors were made when calculating the taxes payable in the original return, a supplementary return can be submitted with the correct data.

Corrective declarations.

A corrective declaration is one that is presented to correct material, arithmetic or factual errors in a previous declaration to correct an injury to the taxpayer himself. These errors may be of a substantial nature or simply a mistake in the data entered. Some situations that may require a corrective declaration are:

1. Errors in the declared figure: If an incorrect amount was entered on the original return, a corrective return must be filed to correct the error.

2. Changes in information: If the taxpayer's tax situation has changed since the presentation of the original declaration, it is necessary to submit an amending declaration with the new data.

3. Errors in identification data: If errors were made in the identification data of the taxpayer or invoice recipient, a corrective declaration must correct this information.

conflicts application of the standard

Deadlines for submitting complementary and corrective declarations.

The deadlines for filing both returns, as a general rule, are the same as for your original returns; although, in corrective declarations, the taxpayer has a period of four years to be able to make said corrective declaration. In the case of complementary statements, it will be made at the time the error is noticed.

How to present complementary and corrective declarations?

The presentation of complementary and corrective declarations will be carried out, as a general rule, through the Electronic Headquarters of the Tax Agency.

Here You can find the steps to make a complementary Personal Income Tax declaration through the Electronic Headquarters of the Tax Agency.

Importance of good tax practice.

The presentation of complementary and corrective declarations is a key practice to maintain good tax conduct. Proactively detecting and correcting errors helps avoid potential penalties and problems with tax administration. In addition, it demonstrates a responsible and transparent attitude on the part of the taxpayer.

Risks and sanctions for omission or incorrect presentation.

Failure to submit supplemental or corrective statements when necessary may entail significant risks and penalties. In some cases, the Tax Agency may interpret these omissions as an attempt to evade taxes, which can result in fines, surcharges and even criminal sanctions in serious cases of tax fraud.

Tax advice and compliance.

It is essential to have adequate tax advice to ensure that you comply with tax obligations correctly and in a timely manner. A tax advisor can help taxpayers identify when it is necessary to file supplemental or corrective returns and provide guidance on how to do so effectively and in compliance with current tax regulations.


Supplementary and corrective returns are important tools in tax management, which allow taxpayers to correct errors and adjust the information presented in previous returns. Filing these declarations in an appropriate and timely manner is crucial to maintaining good tax practice, avoiding penalties and contributing to transparent and efficient tax management. Responsible tax compliance is essential to ensure the correct functioning of tax systems and promote a culture of transparency and equity in society.

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