Many taxpayers have to make the declaration of income tax from personal every year. This tax applies to income derived by individuals, both for wages and salaries, for furniture capital gains (shares, investments …) or property (income from rental property) and gains from asset.
When is it mandatory to make the tax declaration

There is an obligation to declare this tax for people who have obtained in the previous year an income over $ 22,000 annually, if they come from a single payer, or 10,000 euros per year if they come from different payers (if the second and join other payers as a whole over 1500 per year, otherwise it continues to place the $ 22,000 annual).

There is also obliged to declare whether income securities with capital gains exceed 1600 euros and 1000 euros estate.
Reductions and deductions in the tax declaration

But there are a series of reductions and deductions that decrease the quantities obtained in establishing the basis for calculation.

To calculate the tax base, it is estimated that contributions to Social Security or welfare mutual, as professional bodies, are necessary for obtaining revenue, and therefore, are deducted from the tax base. Consider several cases.

1. Inputs and contributions to pension plans: they reduce the basis provided that is charged to the holder of the contributions (who makes the payments), and that this is the future owner of perceptions. This means that each taxpayer deducts its payments. We can not infer, for example, contributions from our wives. Or contributions to our plans whose beneficiary is a spouse.
2. Inputs and contributions to social welfare mutual: if not already deducted from net income of an economic activity, and which aim to cover contingencies include: retirement, total disability, total or severe disability and death.
3. Premiums paid into the pension plans insured: insurance contracts covering the contingencies of retirement, total disability, total or severe disability or death, and where in the policy to expressly specify that it is an “Insured Retirement Plan”.
4. Contributions made by employees to corporate pension plans: should indicate explicitly in the policy which is an “Insured Retirement Plan” and the main contingency should be in retirement.
5. Premiums paid to private insurance: to cover only the risk of severe dependence or strong dependence on third degree relatives, spouses or dependents, with the ceiling of 30% of the aggregate income of the year (50% for over 50 years) or 10,000 euros, the lowest of these amounts.
6. Contributions made to the forecasting system for persons with disabilities (more than 65% from 33% natural or mental), or inability judicially declared.
7. Contributions to the heritage protection of handicapped persons: in degree equal to Item 6).
8. Compensatory pension contributions: for the spouse or children alimony, court orders.

Minimum Personal and Family

Furthermore, there are matching based on the circumstances of each taxpayer, which is called “personal and family minimum, which is the essential part that is supposed to meet the basic needs of the taxpayer and his family. As a general rule, the taxpayer may be reduced based on 5050 euros.
Minimum descendants

To this is added the minimum descendants (by the former: 1,800 euros per year, per second: 2,000 euros per year, for the third, 3,600 euros per year, by the fourth and subsequent: 4,100 per year) provided that the case of children not emancipated with income below the 8,000 per year and under 25 years. Additionally, 2200 extra per year for children under 3 years.
Minimum upstream

The bottom shall be minimum 900 euros for those over 65 years and 1100 euros for over 75 years, provided that they live with the taxpayer and do not have income above 800 per year.
Disability Reductions

There are also reductions for taxpayers disability and disability of the ascendants or descendants.
The full fee

Using the calculated and subtracted reductions base, apply the rates and get the whole payment.
Deductions and share differential

A full share is relevant may deduct amounts for the following deductions:

* Double taxation
* Maternity
* Payments on account
* Contributions to savings account business, dedicated savings accounts with the aim of forming a company within 4 years.
* For acquisition or rehabilitation of residence.
* For contributions in favor of goods of cultural interest.
* For economic activities.
* For donations to non-profit organizations and patronage.
* For income obtained in Ceuta and Melilla.
* Deductions autonomous.

resulting in the differential fee.

The maximum amount of deduct amounts not exceeding 9015.18 per year.

It is therefore desirable to maximize all our legal options to reduce the amount of tax. There will always be to study carefully the limits and conditions for each deduction, since otherwise we may be forced to refund the amounts deducted irregularly including interest.

Currently, there are free software distribution for the same tax office that help us step by step to make our statement. However, if in doubt we can always go to a professional who advises us and get the most out tax deductions are for us.