diff --git a/src/monitor/Monitor.ts b/src/monitor/Monitor.ts
index 34ab55801..9bee157a5 100644
--- a/src/monitor/Monitor.ts
+++ b/src/monitor/Monitor.ts
@@ -666,6 +666,13 @@ export class Monitor {
     );
     const enabledChainIds = this.clients.configStoreClient.getChainIdIndicesForBlock(nextBundleMainnetStartBlock);
 
+    this.logger.debug({
+      at: "Monitor#checkSpokePoolRunningBalances",
+      message: "Mainnet root bundles in scope",
+      validatedBundles,
+      outstandingBundle: bundle,
+    });
+
     const slowFillBlockRange = getWidestPossibleExpectedBlockRange(
       enabledChainIds,
       this.clients.spokePoolClients,
@@ -682,6 +689,13 @@ export class Monitor {
         : [endBlockNumber + 1, spokeLatestBlockSearched > endBlockNumber ? spokeLatestBlockSearched : endBlockNumber];
     });
 
+    this.logger.debug({
+      at: "Monitor#checkSpokePoolRunningBalances",
+      message: "Block ranges to search",
+      slowFillBlockRange,
+      blockRangeTail,
+    });
+
     // Do all async tasks in parallel. We want to know about the pool rebalances, slow fills in the most recent proposed bundle, refunds
     // from the last `n` bundles, pending refunds which have not been made official via a root bundle proposal, and the current balances of
     // all the spoke pools.
@@ -739,6 +753,12 @@ export class Monitor {
       });
     }
 
+    this.logger.debug({
+      at: "Monitor#checkSpokePoolRunningBalances",
+      message: "Print pool rebalance leaves",
+      poolRebalanceRootLeaves: poolRebalanceLeaves,
+    });
+
     // Calculate the pending refunds.
     for (const chainId of chainIds) {
       const l2TokenAddresses = monitoredTokenSymbols
@@ -770,6 +790,13 @@ export class Monitor {
           );
         pendingRelayerRefunds[chainId][l2Token] = pendingValidatedDeductions.add(nextBundleDeductions);
       });
+
+      this.logger.debug({
+        at: "Monitor#checkSpokePoolRunningBalances",
+        message: "Print refund amounts for chainId",
+        chainId,
+        pendingDeductions: pendingRelayerRefunds[chainId],
+      });
     }
 
     // Get the slow fill amounts. Only do this step if there were slow fills in the most recent root bundle.