diff --git a/src/libxrpl/tx/transactors/oracle/OracleSet.cpp b/src/libxrpl/tx/transactors/oracle/OracleSet.cpp
index 779d312e3b..93d8bda025 100644
--- a/src/libxrpl/tx/transactors/oracle/OracleSet.cpp
+++ b/src/libxrpl/tx/transactors/oracle/OracleSet.cpp
@@ -181,14 +181,17 @@ OracleSet::preclaim(PreclaimContext const& ctx)
     if (pairs.size() > kMaxOracleDataSeries)
         return tecARRAY_TOO_LARGE;
 
-    auto const& balance = sleSetter->getFieldAmount(sfBalance);
-    auto const sponsorSle = getTxReserveSponsor(ctx.view, ctx.tx);
-    if (!sponsorSle)
-        return sponsorSle.error();  // LCOV_EXCL_LINE
-    if (auto const ret = checkInsufficientReserve(
-            ctx.view, ctx.tx, sleSetter, balance, *sponsorSle, adjustReserve, 0, ctx.j);
-        !isTesSuccess(ret))
-        return ret;
+    if (!ctx.view.rules().enabled(featureSponsor))
+    {
+        auto const& balance = sleSetter->getFieldAmount(sfBalance);
+        auto const sponsorSle = getTxReserveSponsor(ctx.view, ctx.tx);
+        if (!sponsorSle)
+            return sponsorSle.error();  // LCOV_EXCL_LINE
+        if (auto const ret = checkInsufficientReserve(
+                ctx.view, ctx.tx, sleSetter, balance, *sponsorSle, adjustReserve, 0, ctx.j);
+            !isTesSuccess(ret))
+            return ret;
+    }
 
     return tesSUCCESS;
 }
@@ -276,6 +279,28 @@ OracleSet::doApply()
         if (!accountSle)
             return tefINTERNAL;  // LCOV_EXCL_LINE
 
+        if (ctx_.view().rules().enabled(featureSponsor))
+        {
+            auto const sponsorSle = getTxReserveSponsor(ctx_.view(), ctx_.tx);
+            if (!sponsorSle)
+                return sponsorSle.error();  // LCOV_EXCL_LINE
+            auto const delta = (getLedgerEntryReserveSponsorAccountID(sle) ==
+                                getTxReserveSponsorAccountID(ctx_.tx))
+                ? adjust
+                : static_cast<std::int32_t>(newCount);
+            if (auto const ret = checkInsufficientReserve(
+                    ctx_.view(),
+                    ctx_.tx,
+                    accountSle,
+                    STAmount{preFeeBalance_},
+                    *sponsorSle,
+                    delta,
+                    0,
+                    j_);
+                !isTesSuccess(ret))
+                return ret;
+        }
+
         if (adjust > 0)
         {
             // To continue receiving sponsorship from the same account after the
@@ -354,6 +379,21 @@ OracleSet::doApply()
         if (!accountSle)
             return tefINTERNAL;  // LCOV_EXCL_LINE
 
+        if (ctx_.view().rules().enabled(featureSponsor))
+        {
+            if (auto const ret = checkInsufficientReserve(
+                    ctx_.view(),
+                    ctx_.tx,
+                    accountSle,
+                    STAmount{preFeeBalance_},
+                    *sponsorSle,
+                    count,
+                    0,
+                    j_);
+                !isTesSuccess(ret))
+                return ret;
+        }
+
         adjustOwnerCount(ctx_.view(), accountSle, *sponsorSle, count, ctx_.journal);
         addSponsorToLedgerEntry(sle, *sponsorSle);
 
diff --git a/src/libxrpl/tx/transactors/payment_channel/PaymentChannelCreate.cpp b/src/libxrpl/tx/transactors/payment_channel/PaymentChannelCreate.cpp
index 04d8e6280b..e7c87a1af1 100644
--- a/src/libxrpl/tx/transactors/payment_channel/PaymentChannelCreate.cpp
+++ b/src/libxrpl/tx/transactors/payment_channel/PaymentChannelCreate.cpp
@@ -78,6 +78,7 @@ PaymentChannelCreate::preclaim(PreclaimContext const& ctx)
         return terNO_ACCOUNT;
 
     // Check reserve and funds availability
+    if (!ctx.view.rules().enabled(featureSponsor))
     {
         auto const balance = (*sle)[sfBalance];
         auto const sponsorSle = getTxReserveSponsor(ctx.view, ctx.tx);
@@ -137,6 +138,28 @@ PaymentChannelCreate::doApply()
             return tecEXPIRED;
     }
 
+    if (ctx_.view().rules().enabled(featureSponsor))
+    {
+        auto const sponsorSle = getTxReserveSponsor(ctx_.view(), ctx_.tx);
+        if (!sponsorSle)
+            return sponsorSle.error();  // LCOV_EXCL_LINE
+        if (auto const ret = checkInsufficientReserve(
+                ctx_.view(), ctx_.tx, sle, STAmount{preFeeBalance_}, *sponsorSle, 1, 0, j_);
+            !isTesSuccess(ret))
+            return ret;
+        if (auto const ret = checkInsufficientReserve(
+                ctx_.view(),
+                ctx_.tx,
+                sle,
+                STAmount{preFeeBalance_ - ctx_.tx[sfAmount].xrp()},
+                *sponsorSle,
+                1,
+                0,
+                j_);
+            !isTesSuccess(ret))
+            return tecUNFUNDED;
+    }
+
     auto const dst = ctx_.tx[sfDestination];
 
     // Create PayChan in ledger.