diff --git a/perfect_square_sum.py b/perfect_square_sum.py
new file mode 100644
index 0000000000..4bef4a457c
--- /dev/null
+++ b/perfect_square_sum.py
@@ -0,0 +1,25 @@
+def is_perfect_square(n: int) -> bool:
+    """
+    Check if a number is a perfect square.
+
+    :param n: The number to check.
+    :return: True if the number is a perfect square, False otherwise.
+    """
+    sqrt = n ** 0.5
+    return sqrt.is_integer()
+
+
+def perfect_square_sum(numbers: set[int]) -> int:
+    """
+    Calculate the sum of perfect squares that can be formed from the integers in the set.
+
+    :param numbers: A set of positive integers.
+    :return: The sum of perfect squares that can be formed from the input set.
+    """
+    perfect_squares_sum = 0
+
+    for num in numbers:
+        if is_perfect_square(num):
+            perfect_squares_sum += num
+
+    return perfect_squares_sum
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