diff --git a/tools/tm-bench/statistics.go b/tools/tm-bench/statistics.go
index c1110a83..ce4bd0f0 100644
--- a/tools/tm-bench/statistics.go
+++ b/tools/tm-bench/statistics.go
@@ -67,9 +67,8 @@ func calculateStatistics(
 		numBlocksPerSec[sec]++
 
 		// increase number of txs for that second
-		// TODO: add tracking for tx/sec
-		numTxsPerSec[sec] += 1
-		logger.Debug(fmt.Sprintf("%d txs at block height %d", 1, blockMeta.Header.Height))
+		numTxsPerSec[sec] += blockMeta.NumTxs
+		logger.Debug(fmt.Sprintf("%d txs at block height %d", blockMeta.NumTxs, blockMeta.Header.Height))
 	}
 
 	for i := int64(0); i < int64(duration); i++ {
diff --git a/types/block_meta.go b/types/block_meta.go
index 8297446a..02728be4 100644
--- a/types/block_meta.go
+++ b/types/block_meta.go
@@ -2,8 +2,9 @@ package types
 
 // BlockMeta contains meta information about a block - namely, it's ID and Header.
 type BlockMeta struct {
-	BlockID BlockID `json:"block_id"` // the block hash and partsethash
-	Header  Header  `json:"header"`   // The block's Header
+	BlockID BlockID `json:"block_id"`   // the block hash and partsethash
+	Header  Header  `json:"header"`     // The block's Header
+	NumTxs  int64   `json:"number_txs"` //
 }
 
 // NewBlockMeta returns a new BlockMeta from the block and its blockParts.
@@ -11,6 +12,7 @@ func NewBlockMeta(block *Block, blockParts *PartSet) *BlockMeta {
 	return &BlockMeta{
 		BlockID: BlockID{block.Hash(), blockParts.Header()},
 		Header:  block.Header,
+		NumTxs:  int64(len(block.Data.Txs)),
 	}
 }