One of the most important questions when preparing Modelo 100 is which income must be included in the declaration. Many people believe it only concerns salary. In reality, the range of income is much broader.
Salary
The main source of income for most people is salary. It is always included in the tax calculation and serves as the basis for determining tax obligations.
Investment income
This category includes income generated from financial assets. It may consist of interest, gains from the sale of assets, or other types of returns. Such income requires careful assessment and correct reporting.
Dividends
Dividends must also be included in the declaration. Even if payments are irregular or small, they form part of the total income.
Rental income
If a property is rented out, the income must be reported. This applies to both properties located in Spain and those abroad.
Foreign income
Special attention should be given to income earned outside Spain. Tax residents are required to include such income in their overall declaration.
Why confusion arises
The main difficulty is that income comes from different sources and is presented in different formats. This creates the impression that some information may not be relevant.
In practice, incomplete reporting of income is one of the most common mistakes.
Conclusion
Modelo 100 covers all types of income of a tax resident. Understanding the structure of income and reporting it correctly helps avoid errors and properly assess tax obligations.