diff --git a/changelog_entry.yaml b/changelog_entry.yaml
index e69de29bb..78dae96be 100644
--- a/changelog_entry.yaml
+++ b/changelog_entry.yaml
@@ -0,0 +1,4 @@
+- bump: minor
+  changes:
+    added:
+    - Child minimum age for basic income.
diff --git a/policyengine_uk/parameters/gov/contrib/ubi_center/basic_income/amount/child_min_age.yaml b/policyengine_uk/parameters/gov/contrib/ubi_center/basic_income/amount/child_min_age.yaml
new file mode 100644
index 000000000..708172e92
--- /dev/null
+++ b/policyengine_uk/parameters/gov/contrib/ubi_center/basic_income/amount/child_min_age.yaml
@@ -0,0 +1,6 @@
+description: Minimum age for children to receive the child basic income.
+metadata:
+  unit: year
+  label: Child basic income minimum threshold
+values:
+  2010-01-01: 0
diff --git a/policyengine_uk/variables/contrib/ubi_center/basic_income/bi_maximum.py b/policyengine_uk/variables/contrib/ubi_center/basic_income/bi_maximum.py
index c21c4d3f6..22271484d 100644
--- a/policyengine_uk/variables/contrib/ubi_center/basic_income/bi_maximum.py
+++ b/policyengine_uk/variables/contrib/ubi_center/basic_income/bi_maximum.py
@@ -12,7 +12,10 @@ def formula(person, period, parameters):
         bi = parameters(period).gov.contrib.ubi_center.basic_income
         weekly_flat_amount = bi.amount.flat
         is_senior_for_bi = person("is_SP_age", period)
-        is_child_for_bi = person("age", period) < bi.amount.adult_age
+        age = person("age", period)
+        is_child_for_bi = (age < bi.amount.adult_age) * (
+            age >= bi.amount.child_min_age
+        )
         weekly_amount_by_age = select(
             [is_child_for_bi, is_senior_for_bi],
             [bi.amount.by_age.child, bi.amount.by_age.senior],