### The age of the youngest member of a family

Int DAY Family Formula Included used 2 times
**Value type**
Int
.
**Default value**
0
**Entity**
family

### How is this calculated?

To calculate this variable, the following input is used

- Int age The age of a Person (in years)
- Date date_of_birth Birth date

### Where is this used?

This variable is referred to by these other variables in their own calculations

- Boolean best_start__family_has_children_eligible Is each family classified as eligible for best start tax credit
- Boolean sole_parent_support__family_has_child_under_age_limit Does the family have a child who meets the criteria for disabled

### Formulas

This is the formula used to calculate the value of age_of_youngest

### 0001-01-01

This formula is used for scenarios from the date 0001-01-01 onwards. More info on formulas

```
def formula(families, period, parameters):
return families.min(families.members(
```**'age'**, period))