diff --git a/src/init.cpp b/src/init.cpp
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -45,7 +45,6 @@
 #include <node/context.h>
 #include <node/miner.h>
 #include <node/ui_interface.h>
-#include <policy/mempool.h>
 #include <policy/policy.h>
 #include <policy/settings.h>
 #include <rpc/blockchain.h>
@@ -1846,8 +1845,11 @@
     // mempool limits
     int64_t nMempoolSizeMax =
         args.GetIntArg("-maxmempool", DEFAULT_MAX_MEMPOOL_SIZE) * 1000000;
-    // FIXME: this limit is no longer relevant after wellington activation
-    int64_t nMempoolSizeMin = DEFAULT_DESCENDANT_SIZE_LIMIT * 1000 * 40;
+    // FIXME: this legacy limit comes from the DEFAULT_DESCENDANT_SIZE_LIMIT
+    // (101) that was enforced before the wellington activation. While it's
+    // still a good idea to have some minimum mempool size, using this value as
+    // a threshold is no longer relevant.
+    int64_t nMempoolSizeMin = 101 * 1000 * 40;
     if (nMempoolSizeMax < 0 ||
         (!chainparams.IsTestChain() && nMempoolSizeMax < nMempoolSizeMin)) {
         return InitError(strprintf(_("-maxmempool must be at least %d MB"),
diff --git a/src/interfaces/chain.h b/src/interfaces/chain.h
--- a/src/interfaces/chain.h
+++ b/src/interfaces/chain.h
@@ -205,12 +205,6 @@
                                       const Amount &max_tx_fee, bool relay,
                                       std::string &err_string) = 0;
 
-    //! Get the node's package limits.
-    //! Currently only returns the ancestor and descendant count limits, but
-    //! could be enhanced to return more policy settings.
-    virtual void getPackageLimits(size_t &limit_ancestor_count,
-                                  size_t &limit_descendant_count) = 0;
-
     //! Estimate fee
     virtual CFeeRate estimateFee() const = 0;
 
diff --git a/src/node/interfaces.cpp b/src/node/interfaces.cpp
--- a/src/node/interfaces.cpp
+++ b/src/node/interfaces.cpp
@@ -22,7 +22,6 @@
 #include <node/context.h>
 #include <node/transaction.h>
 #include <node/ui_interface.h>
-#include <policy/mempool.h>
 #include <policy/settings.h>
 #include <primitives/block.h>
 #include <primitives/transaction.h>
@@ -623,11 +622,6 @@
             // to know about.
             return err == TransactionError::OK;
         }
-        void getPackageLimits(size_t &limit_ancestor_count,
-                              size_t &limit_descendant_count) override {
-            limit_ancestor_count = size_t(DEFAULT_ANCESTOR_LIMIT);
-            limit_descendant_count = size_t(DEFAULT_DESCENDANT_LIMIT);
-        }
         CFeeRate estimateFee() const override {
             if (!m_node.mempool) {
                 return {};
diff --git a/src/policy/mempool.h b/src/policy/mempool.h
deleted file mode 100644
--- a/src/policy/mempool.h
+++ /dev/null
@@ -1,49 +0,0 @@
-// Copyright (c) 2020 The Bitcoin developers
-// Distributed under the MIT software license, see the accompanying
-// file COPYING or http://www.opensource.org/licenses/mit-license.php.
-#ifndef BITCOIN_POLICY_MEMPOOL_H
-#define BITCOIN_POLICY_MEMPOOL_H
-
-#include <policy/packages.h>
-
-#include <cstdint>
-
-class CBlockIndex;
-namespace Consensus {
-struct Params;
-}
-
-/**
- * Default for -limitancestorcount, max number of in-mempool ancestors.
- * FIXME: Should be removed, it is no longer relevant since wellington.
- */
-static constexpr unsigned int DEFAULT_ANCESTOR_LIMIT = 50;
-/**
- * Default for -limitancestorsize, maximum kilobytes of tx + all in-mempool
- * ancestors.
- * FIXME: Should be removed, it is no longer relevant since wellington.
- */
-static constexpr unsigned int DEFAULT_ANCESTOR_SIZE_LIMIT = 101;
-/**
- * Default for -limitdescendantcount, max number of in-mempool descendants
- * FIXME: Should be removed, it is no longer relevant since wellington.
- */
-static constexpr unsigned int DEFAULT_DESCENDANT_LIMIT = 50;
-/**
- * Default for -limitdescendantsize, maximum kilobytes of in-mempool
- * descendants.
- * FIXME: Should be removed, it is no longer relevant since wellington.
- */
-static const unsigned int DEFAULT_DESCENDANT_SIZE_LIMIT = 101;
-
-// If a package is submitted, it must be within the mempool's
-// ancestor/descendant limits. Since a submitted package must be
-// child-with-unconfirmed-parents (all of the transactions are an ancestor of
-// the child), package limits are ultimately bounded by mempool package limits.
-// Ensure that the defaults reflect this constraint.
-static_assert(DEFAULT_DESCENDANT_LIMIT >= MAX_PACKAGE_COUNT);
-static_assert(DEFAULT_ANCESTOR_LIMIT >= MAX_PACKAGE_COUNT);
-static_assert(DEFAULT_ANCESTOR_SIZE_LIMIT >= MAX_PACKAGE_SIZE);
-static_assert(DEFAULT_DESCENDANT_SIZE_LIMIT >= MAX_PACKAGE_SIZE);
-
-#endif // BITCOIN_POLICY_MEMPOOL_H
diff --git a/src/txmempool.cpp b/src/txmempool.cpp
--- a/src/txmempool.cpp
+++ b/src/txmempool.cpp
@@ -14,7 +14,6 @@
 #include <consensus/tx_verify.h>
 #include <consensus/validation.h>
 #include <policy/fees.h>
-#include <policy/mempool.h>
 #include <policy/policy.h>
 #include <policy/settings.h>
 #include <reverse_iterator.h>
diff --git a/src/validation.cpp b/src/validation.cpp
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -31,7 +31,6 @@
 #include <node/ui_interface.h>
 #include <node/utxo_snapshot.h>
 #include <policy/block/minerfund.h>
-#include <policy/mempool.h>
 #include <policy/policy.h>
 #include <policy/settings.h>
 #include <pow/pow.h>
diff --git a/src/wallet/spend.cpp b/src/wallet/spend.cpp
--- a/src/wallet/spend.cpp
+++ b/src/wallet/spend.cpp
@@ -508,7 +508,6 @@
     // limitation becomes irrelevant.
     size_t max_ancestors{0};
     size_t max_descendants{0};
-    wallet.chain().getPackageLimits(max_ancestors, max_descendants);
 
     // form groups from remaining coins; note that preset coins will not
     // automatically have their associated (same address) coins included
diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -15,7 +15,6 @@
 #include <interfaces/wallet.h>
 #include <key.h>
 #include <key_io.h>
-#include <policy/mempool.h>
 #include <policy/policy.h>
 #include <primitives/transaction.h>
 #include <random.h>