For multiple births
Regulations: Art. 3 and 12 bis Text Recast of the legal provisions of the Autonomous Community of Extremadura regarding taxes transferred by the State, approved by Legislative Decree 1/2018, of April 10
300 euros per child born in the tax period, provided that the minor lives with the parent on the date of tax accrual (normally, December 31) and there are multiple births.
Requirements and other conditions for the application of this deduction
The application of the deduction is conditional on the sum of the general and savings tax bases , boxes  and  of the declaration, does not exceed the following amounts:
- 19,000 euros in individual taxation.
- 24,000 euros in joint taxation.
In the event that taxpayer habitually resides in municipalities and smaller local entities with a population of less than 3,000 inhabitants:
Note: In this case, if the taxpayer belongs to a large family , there will be no limit.
The necessary conditions for the consideration of a large family and its classification by categories will be determined in accordance with the provisions of Law 40/2003, of November 18, on the Protection of Large Families (BOE of November 19).
- 28,000 euros in individual taxation.
- 45,000 euros in joint taxation.
In the case of marriage, this limit of 45,000 euros will apply provided that at least one of the spouses had their habitual residence during the tax period in one of the municipalities or smaller local entities with a population of less than 3,000 inhabitants.
Habitual residence will be determined based on the criteria defined in article 9 of the Personal Income Tax Law, but limited to the scope of the municipality or minor local entity.
You can consult the municipalities and smaller local entities with a population of less than 3,000 inhabitants at the following link: " Municipalities and smaller local entities with a population of less than 3,000 inhabitants ".
When the children born live with both parents, the amount of the deduction will be prorated in equal parts in the declaration of each of them if they opt for individual taxation.