diff --git a/headroom/proxy/beta_header_policy.py b/headroom/proxy/beta_header_policy.py
new file mode 100644
index 000000000..fa7dda3db
--- /dev/null
+++ b/headroom/proxy/beta_header_policy.py
@@ -0,0 +1,44 @@
+"""Policy helpers for beta-header stickiness configuration."""
+
+from __future__ import annotations
+
+from typing import Literal, cast
+
+BETA_HEADER_STICKY_ENV = "HEADROOM_BETA_HEADER_STICKY"
+BetaHeaderStickyMode = Literal["enabled", "disabled"]
+BETA_HEADER_STICKY_DEFAULT: BetaHeaderStickyMode = "enabled"
+
+BETA_TRACKER_MAX_SESSIONS_ENV = "HEADROOM_BETA_TRACKER_MAX_SESSIONS"
+BETA_TRACKER_MAX_SESSIONS_DEFAULT = 1000
+
+
+def resolve_beta_header_sticky_mode(raw: str | None) -> BetaHeaderStickyMode:
+    """Resolve beta-header stickiness mode from an environment value."""
+
+    normalized = (raw or "").strip().lower()
+    if not normalized:
+        return BETA_HEADER_STICKY_DEFAULT
+    if normalized in ("enabled", "disabled"):
+        return cast(BetaHeaderStickyMode, normalized)
+    raise ValueError(
+        f"Invalid {BETA_HEADER_STICKY_ENV}={normalized!r}; expected 'enabled' or 'disabled'"
+    )
+
+
+def resolve_beta_tracker_max_sessions(raw: str | None) -> int:
+    """Resolve the positive LRU session bound for beta-header tracking."""
+
+    normalized = (raw or "").strip()
+    if not normalized:
+        return BETA_TRACKER_MAX_SESSIONS_DEFAULT
+    try:
+        value = int(normalized)
+    except ValueError as exc:
+        raise ValueError(
+            f"Invalid {BETA_TRACKER_MAX_SESSIONS_ENV}={normalized!r}; expected positive int"
+        ) from exc
+    if value <= 0:
+        raise ValueError(
+            f"Invalid {BETA_TRACKER_MAX_SESSIONS_ENV}={normalized!r}; expected positive int"
+        )
+    return value
diff --git a/headroom/proxy/helpers.py b/headroom/proxy/helpers.py
index 94d0768f3..0ccd3cfda 100644
--- a/headroom/proxy/helpers.py
+++ b/headroom/proxy/helpers.py
@@ -33,6 +33,15 @@ from headroom.proxy import (
     wire_debug_format_policy,
     wire_debug_redaction_policy,
 )
+from headroom.proxy.beta_header_policy import (
+    BETA_HEADER_STICKY_DEFAULT,
+    BETA_HEADER_STICKY_ENV,
+    BETA_TRACKER_MAX_SESSIONS_DEFAULT,
+    BETA_TRACKER_MAX_SESSIONS_ENV,
+    BetaHeaderStickyMode,
+    resolve_beta_header_sticky_mode,
+    resolve_beta_tracker_max_sessions,
+)
 from headroom.proxy.body_forwarding import (
     BodyMutationTracker as BodyMutationTracker,  # noqa: F401 - compatibility export
 )
@@ -1530,12 +1539,11 @@ def log_outbound_headers(
 # the tracker (returns the client value verbatim). That mode is loud and
 # explicit per realignment build constraint #4 — NOT a silent fallback.
 
-_BETA_HEADER_STICKY_ENV = "HEADROOM_BETA_HEADER_STICKY"
-BetaHeaderStickyMode = Literal["enabled", "disabled"]
-_BETA_HEADER_STICKY_DEFAULT: BetaHeaderStickyMode = "enabled"
+_BETA_HEADER_STICKY_ENV = BETA_HEADER_STICKY_ENV
+_BETA_HEADER_STICKY_DEFAULT = BETA_HEADER_STICKY_DEFAULT
 
-_BETA_TRACKER_MAX_SESSIONS_ENV = "HEADROOM_BETA_TRACKER_MAX_SESSIONS"
-_BETA_TRACKER_MAX_SESSIONS_DEFAULT = 1000
+_BETA_TRACKER_MAX_SESSIONS_ENV = BETA_TRACKER_MAX_SESSIONS_ENV
+_BETA_TRACKER_MAX_SESSIONS_DEFAULT = BETA_TRACKER_MAX_SESSIONS_DEFAULT
 
 
 def get_beta_header_sticky_mode() -> BetaHeaderStickyMode:
@@ -1545,28 +1553,12 @@ def get_beta_header_sticky_mode() -> BetaHeaderStickyMode:
     restart. Unknown values raise loudly per the no-silent-fallback
     build constraint.
     """
-    raw = os.environ.get(_BETA_HEADER_STICKY_ENV, "").strip().lower()
-    if not raw:
-        return _BETA_HEADER_STICKY_DEFAULT
-    if raw in ("enabled", "disabled"):
-        return cast(BetaHeaderStickyMode, raw)
-    raise ValueError(f"Invalid {_BETA_HEADER_STICKY_ENV}={raw!r}; expected 'enabled' or 'disabled'")
+    return resolve_beta_header_sticky_mode(os.environ.get(_BETA_HEADER_STICKY_ENV))
 
 
 def get_beta_tracker_max_sessions() -> int:
     """Return the LRU bound for `SessionBetaTracker` (sessions cap)."""
-    raw = os.environ.get(_BETA_TRACKER_MAX_SESSIONS_ENV, "").strip()
-    if not raw:
-        return _BETA_TRACKER_MAX_SESSIONS_DEFAULT
-    try:
-        value = int(raw)
-    except ValueError as exc:
-        raise ValueError(
-            f"Invalid {_BETA_TRACKER_MAX_SESSIONS_ENV}={raw!r}; expected positive int"
-        ) from exc
-    if value <= 0:
-        raise ValueError(f"Invalid {_BETA_TRACKER_MAX_SESSIONS_ENV}={raw!r}; expected positive int")
-    return value
+    return resolve_beta_tracker_max_sessions(os.environ.get(_BETA_TRACKER_MAX_SESSIONS_ENV))
 
 
 def _split_beta_tokens(value: str | None) -> list[str]:
diff --git a/tests/test_beta_header_policy.py b/tests/test_beta_header_policy.py
new file mode 100644
index 000000000..b8e7c018e
--- /dev/null
+++ b/tests/test_beta_header_policy.py
@@ -0,0 +1,42 @@
+from __future__ import annotations
+
+import pytest
+
+from headroom.proxy.beta_header_policy import (
+    BETA_HEADER_STICKY_ENV,
+    BETA_TRACKER_MAX_SESSIONS_DEFAULT,
+    BETA_TRACKER_MAX_SESSIONS_ENV,
+    resolve_beta_header_sticky_mode,
+    resolve_beta_tracker_max_sessions,
+)
+
+
+def test_resolve_beta_header_sticky_mode_defaults_to_enabled() -> None:
+    assert resolve_beta_header_sticky_mode(None) == "enabled"
+    assert resolve_beta_header_sticky_mode("  ") == "enabled"
+
+
+def test_resolve_beta_header_sticky_mode_accepts_known_values() -> None:
+    assert resolve_beta_header_sticky_mode("ENABLED") == "enabled"
+    assert resolve_beta_header_sticky_mode(" disabled ") == "disabled"
+
+
+def test_resolve_beta_header_sticky_mode_rejects_unknown_values() -> None:
+    with pytest.raises(ValueError, match=BETA_HEADER_STICKY_ENV):
+        resolve_beta_header_sticky_mode("maybe")
+
+
+def test_resolve_beta_tracker_max_sessions_defaults() -> None:
+    assert resolve_beta_tracker_max_sessions(None) == BETA_TRACKER_MAX_SESSIONS_DEFAULT
+    assert resolve_beta_tracker_max_sessions("  ") == BETA_TRACKER_MAX_SESSIONS_DEFAULT
+
+
+def test_resolve_beta_tracker_max_sessions_accepts_positive_int() -> None:
+    assert resolve_beta_tracker_max_sessions("42") == 42
+    assert resolve_beta_tracker_max_sessions(" 7 ") == 7
+
+
+@pytest.mark.parametrize("raw", ["0", "-1", "not-int", "1.5"])
+def test_resolve_beta_tracker_max_sessions_rejects_invalid_values(raw: str) -> None:
+    with pytest.raises(ValueError, match=BETA_TRACKER_MAX_SESSIONS_ENV):
+        resolve_beta_tracker_max_sessions(raw)