diff --git a/src/wallet/wallet2.cpp b/src/wallet/wallet2.cpp
index 016b19042..589259ec8 100644
--- a/src/wallet/wallet2.cpp
+++ b/src/wallet/wallet2.cpp
@@ -9473,13 +9473,12 @@ bool wallet2::is_synced() const
   return get_blockchain_current_height() >= height;
 }
 //----------------------------------------------------------------------------------------------------
-std::vector<std::pair<uint64_t, uint64_t>> wallet2::estimate_backlog(uint64_t min_blob_size, uint64_t max_blob_size, const std::vector<uint64_t> &fees)
+std::vector<std::pair<uint64_t, uint64_t>> wallet2::estimate_backlog(const std::vector<std::pair<double, double>> &fee_levels)
 {
-  THROW_WALLET_EXCEPTION_IF(min_blob_size == 0, error::wallet_internal_error, "Invalid 0 fee");
-  THROW_WALLET_EXCEPTION_IF(max_blob_size == 0, error::wallet_internal_error, "Invalid 0 fee");
-  for (uint64_t fee: fees)
+  for (const auto &fee_level: fee_levels)
   {
-    THROW_WALLET_EXCEPTION_IF(fee == 0, error::wallet_internal_error, "Invalid 0 fee");
+    THROW_WALLET_EXCEPTION_IF(fee_level.first == 0.0, error::wallet_internal_error, "Invalid 0 fee");
+    THROW_WALLET_EXCEPTION_IF(fee_level.second == 0.0, error::wallet_internal_error, "Invalid 0 fee");
   }
 
   // get txpool backlog
@@ -9509,9 +9508,10 @@ std::vector<std::pair<uint64_t, uint64_t>> wallet2::estimate_backlog(uint64_t mi
   uint64_t full_reward_zone = resp_t.result.block_size_limit / 2;
 
   std::vector<std::pair<uint64_t, uint64_t>> blocks;
-  for (uint64_t fee: fees)
+  for (const auto &fee_level: fee_levels)
   {
-    double our_fee_byte_min = fee / (double)min_blob_size, our_fee_byte_max = fee / (double)max_blob_size;
+    const double our_fee_byte_min = fee_level.first;
+    const double our_fee_byte_max = fee_level.second;
     uint64_t priority_size_min = 0, priority_size_max = 0;
     for (const auto &i: res.result.backlog)
     {
@@ -9529,14 +9529,31 @@ std::vector<std::pair<uint64_t, uint64_t>> wallet2::estimate_backlog(uint64_t mi
 
     uint64_t nblocks_min = priority_size_min / full_reward_zone;
     uint64_t nblocks_max = priority_size_max / full_reward_zone;
-    MDEBUG("estimate_backlog: priority_size " << priority_size_min << " - " << priority_size_max << " for " << fee
-        << " (" << our_fee_byte_min << " - " << our_fee_byte_max << " piconero byte fee), "
+    MDEBUG("estimate_backlog: priority_size " << priority_size_min << " - " << priority_size_max << " for "
+        << our_fee_byte_min << " - " << our_fee_byte_max << " piconero byte fee, "
         << nblocks_min << " - " << nblocks_max << " blocks at block size " << full_reward_zone);
     blocks.push_back(std::make_pair(nblocks_min, nblocks_max));
   }
   return blocks;
 }
 //----------------------------------------------------------------------------------------------------
+std::vector<std::pair<uint64_t, uint64_t>> wallet2::estimate_backlog(uint64_t min_blob_size, uint64_t max_blob_size, const std::vector<uint64_t> &fees)
+{
+  THROW_WALLET_EXCEPTION_IF(min_blob_size == 0, error::wallet_internal_error, "Invalid 0 fee");
+  THROW_WALLET_EXCEPTION_IF(max_blob_size == 0, error::wallet_internal_error, "Invalid 0 fee");
+  for (uint64_t fee: fees)
+  {
+    THROW_WALLET_EXCEPTION_IF(fee == 0, error::wallet_internal_error, "Invalid 0 fee");
+  }
+  std::vector<std::pair<double, double>> fee_levels;
+  for (uint64_t fee: fees)
+  {
+    double our_fee_byte_min = fee / (double)min_blob_size, our_fee_byte_max = fee / (double)max_blob_size;
+    fee_levels.emplace_back(our_fee_byte_min, our_fee_byte_max);
+  }
+  return estimate_backlog(fee_levels);
+}
+//----------------------------------------------------------------------------------------------------
 void wallet2::generate_genesis(cryptonote::block& b) const {
   if (m_testnet)
   {
diff --git a/src/wallet/wallet2.h b/src/wallet/wallet2.h
index e68531cbf..57ede86c2 100644
--- a/src/wallet/wallet2.h
+++ b/src/wallet/wallet2.h
@@ -956,6 +956,7 @@ namespace tools
 
     bool is_synced() const;
 
+    std::vector<std::pair<uint64_t, uint64_t>> estimate_backlog(const std::vector<std::pair<double, double>> &fee_levels);
     std::vector<std::pair<uint64_t, uint64_t>> estimate_backlog(uint64_t min_blob_size, uint64_t max_blob_size, const std::vector<uint64_t> &fees);
 
     uint64_t get_fee_multiplier(uint32_t priority, int fee_algorithm = -1) const;