diff --git a/include/xrpl/ledger/helpers/AccountRootHelpers.h b/include/xrpl/ledger/helpers/AccountRootHelpers.h
index a988468f2f..bcd7317b68 100644
--- a/include/xrpl/ledger/helpers/AccountRootHelpers.h
+++ b/include/xrpl/ledger/helpers/AccountRootHelpers.h
@@ -11,6 +11,8 @@
 #include <xrpl/protocol/STLedgerEntry.h>
 #include <xrpl/protocol/TER.h>
 
+#include <cstdint>
+#include <optional>
 #include <set>
 #include <vector>
 
@@ -165,6 +167,25 @@ using WAccountRoot = AccountRoot<ApplyView>;
 extern template class AccountRoot<ReadView>;
 extern template class AccountRoot<ApplyView>;
 
+namespace detail {
+
+/** Confine an owner count adjustment to the valid range.
+
+    If adjustment would underflow or overflow the owner count, clamp it to the
+    nearest valid value. If id is supplied, log fatal diagnostics for invalid
+    adjustments.
+
+    @return The adjusted owner count.
+*/
+[[nodiscard]] std::uint32_t
+confineOwnerCount(
+    std::uint32_t current,
+    std::int32_t adjustment,
+    std::optional<AccountID> const& id = std::nullopt,
+    beast::Journal j = beast::Journal{beast::Journal::getNullSink()});
+
+}  // namespace detail
+
 /** Generate a pseudo-account address from a pseudo owner key.
     @param pseudoOwnerKey The key to generate the address from
     @return The generated account ID
diff --git a/src/libxrpl/ledger/helpers/AccountRootHelpers.cpp b/src/libxrpl/ledger/helpers/AccountRootHelpers.cpp
index 1030bac5f8..83481a8d12 100644
--- a/src/libxrpl/ledger/helpers/AccountRootHelpers.cpp
+++ b/src/libxrpl/ledger/helpers/AccountRootHelpers.cpp
@@ -24,7 +24,6 @@
 #include <cstdint>
 #include <limits>
 #include <memory>
-#include <optional>
 #include <set>
 #include <stdexcept>
 #include <vector>
@@ -40,18 +39,12 @@ AccountRoot<ViewT>::isGlobalFrozen() const
     return this->sle_->isFlag(lsfGlobalFreeze);
 }
 
-// An owner count cannot be negative. If adjustment would cause a negative
-// owner count, clamp the owner count at 0. Similarly for overflow. This
-// adjustment allows the ownerCount to be adjusted up or down in multiple steps.
-// If id != std::nullopt, then do error reporting.
-//
-// Returns adjusted owner count.
-static std::uint32_t
-confineOwnerCount(
+std::uint32_t
+detail::confineOwnerCount(
     std::uint32_t current,
     std::int32_t adjustment,
-    std::optional<AccountID> const& id = std::nullopt,
-    beast::Journal j = beast::Journal{beast::Journal::getNullSink()})
+    std::optional<AccountID> const& id,
+    beast::Journal j)
 {
     std::uint32_t adjusted{current + adjustment};
     if (adjustment > 0)
@@ -76,7 +69,7 @@ confineOwnerCount(
                 JLOG(j.fatal()) << "Account " << *id << " owner count set below 0!";
             }
             adjusted = 0;
-            XRPL_ASSERT(!id, "xrpl::confineOwnerCount : id is not set");
+            XRPL_ASSERT(!id, "xrpl::detail::confineOwnerCount : id is not set");
         }
     }
     return adjusted;
@@ -90,7 +83,7 @@ AccountRoot<ViewT>::xrpLiquid(std::int32_t ownerCountAdj) const
         return beast::kZero;
 
     // Return balance minus reserve
-    std::uint32_t const ownerCount = confineOwnerCount(
+    std::uint32_t const ownerCount = detail::confineOwnerCount(
         this->readView().ownerCountHook(id_, this->sle_->getFieldU32(sfOwnerCount)), ownerCountAdj);
 
     // Pseudo-accounts have no reserve requirement
@@ -131,7 +124,7 @@ AccountRoot<ViewT>::adjustOwnerCount(std::int32_t amount)
     XRPL_ASSERT(amount, "xrpl::adjustOwnerCount : nonzero amount input");
     std::uint32_t const current{this->sle_->getFieldU32(sfOwnerCount)};
     AccountID const id = (*this->sle_)[sfAccount];
-    std::uint32_t const adjusted = confineOwnerCount(current, amount, id, this->j_);
+    std::uint32_t const adjusted = detail::confineOwnerCount(current, amount, id, this->j_);
     this->applyView().adjustOwnerCountHook(id_, current, adjusted);
     this->sle_->at(sfOwnerCount) = adjusted;
     this->update();
diff --git a/src/libxrpl/ledger/helpers/LendingHelpers.cpp b/src/libxrpl/ledger/helpers/LendingHelpers.cpp
index 6976f2833a..8ccfd2f2e4 100644
--- a/src/libxrpl/ledger/helpers/LendingHelpers.cpp
+++ b/src/libxrpl/ledger/helpers/LendingHelpers.cpp
@@ -10,6 +10,7 @@
 #include <xrpl/ledger/ApplyView.h>
 #include <xrpl/ledger/ReadView.h>
 #include <xrpl/ledger/View.h>
+#include <xrpl/ledger/helpers/AccountRootHelpers.h>
 #include <xrpl/protocol/AccountID.h>
 #include <xrpl/protocol/Asset.h>
 #include <xrpl/protocol/Feature.h>
@@ -26,9 +27,7 @@
 #include <algorithm>
 #include <cstddef>
 #include <cstdint>
-#include <limits>
 #include <memory>
-#include <optional>
 #include <string_view>
 #include <utility>
 
@@ -2158,48 +2157,6 @@ loanMakePayment(
     return totalParts;
 }
 
-// An owner count cannot be negative. If adjustment would cause a negative
-// owner count, clamp the owner count at 0. Similarly for overflow. This
-// adjustment allows the ownerCount to be adjusted up or down in multiple steps.
-// If id != std::nullopt, then do error reporting.
-//
-// Returns adjusted owner count.
-static std::uint32_t
-confineOwnerCount(
-    std::uint32_t current,
-    std::int32_t adjustment,
-    std::optional<AccountID> const& id = std::nullopt,
-    beast::Journal j = beast::Journal{beast::Journal::getNullSink()})
-{
-    std::uint32_t adjusted{current + adjustment};
-    if (adjustment > 0)
-    {
-        // Overflow is well defined on unsigned
-        if (adjusted < current)
-        {
-            if (id)
-            {
-                JLOG(j.fatal()) << "Account " << *id << " owner count exceeds max!";
-            }
-            adjusted = std::numeric_limits<std::uint32_t>::max();
-        }
-    }
-    else
-    {
-        // Underflow is well defined on unsigned
-        if (adjusted > current)
-        {
-            if (id)
-            {
-                JLOG(j.fatal()) << "Account " << *id << " owner count set below 0!";
-            }
-            adjusted = 0;
-            XRPL_ASSERT(!id, "xrpl::confineOwnerCount : id is not set");
-        }
-    }
-    return adjusted;
-}
-
 void
 adjustOwnerCount(
     std::shared_ptr<SLE> const& sle,
@@ -2215,7 +2172,7 @@ adjustOwnerCount(
     XRPL_ASSERT(amount, "xrpl::adjustOwnerCount : nonzero amount input");
     std::uint32_t const current{sle->getFieldU32(sfOwnerCount)};
     AccountID const id = (*sle)[sfAccount];
-    std::uint32_t const adjusted = confineOwnerCount(current, amount, id, j);
+    std::uint32_t const adjusted = detail::confineOwnerCount(current, amount, id, j);
     view.adjustOwnerCountHook(id, current, adjusted);
     sle->at(sfOwnerCount) = adjusted;
     view.update(sle);