diff --git a/sweepbatcher/greedy_batch_selection.go b/sweepbatcher/greedy_batch_selection.go
index 6696d6583..431eee5e3 100644
--- a/sweepbatcher/greedy_batch_selection.go
+++ b/sweepbatcher/greedy_batch_selection.go
@@ -190,8 +190,7 @@ func estimateBatchWeight(batch *batch) (feeDetails, error) {
 
 	// Add inputs.
 	for _, sweep := range batch.sweeps {
-		// TODO: it should be txscript.SigHashDefault.
-		coopWeight.AddTaprootKeySpendInput(txscript.SigHashAll)
+		coopWeight.AddTaprootKeySpendInput(txscript.SigHashDefault)
 
 		err = sweep.htlcSuccessEstimator(&nonCoopWeight)
 		if err != nil {
diff --git a/sweepbatcher/greedy_batch_selection_test.go b/sweepbatcher/greedy_batch_selection_test.go
index 8752358e0..6a85185df 100644
--- a/sweepbatcher/greedy_batch_selection_test.go
+++ b/sweepbatcher/greedy_batch_selection_test.go
@@ -17,7 +17,7 @@ const (
 	lowFeeRate  = chainfee.FeePerKwFloor
 	highFeeRate = chainfee.SatPerKWeight(30000)
 
-	coopInputWeight       = lntypes.WeightUnit(231)
+	coopInputWeight       = lntypes.WeightUnit(230)
 	nonCoopInputWeight    = lntypes.WeightUnit(521)
 	nonCoopPenalty        = nonCoopInputWeight - coopInputWeight
 	coopNewBatchWeight    = lntypes.WeightUnit(396)
@@ -81,7 +81,7 @@ func TestEstimateSweepFeeIncrement(t *testing.T) {
 			},
 			wantNewBatchFeeDetails: feeDetails{
 				FeeRate:       lowFeeRate,
-				CoopWeight:    lntypes.WeightUnit(445),
+				CoopWeight:    lntypes.WeightUnit(444),
 				NonCoopWeight: lntypes.WeightUnit(735),
 			},
 		},
@@ -99,7 +99,7 @@ func TestEstimateSweepFeeIncrement(t *testing.T) {
 			},
 			wantNewBatchFeeDetails: feeDetails{
 				FeeRate:       highFeeRate,
-				CoopWeight:    lntypes.WeightUnit(445),
+				CoopWeight:    lntypes.WeightUnit(444),
 				NonCoopWeight: lntypes.WeightUnit(735),
 			},
 		},
@@ -120,7 +120,7 @@ func TestEstimateSweepFeeIncrement(t *testing.T) {
 			},
 			wantNewBatchFeeDetails: feeDetails{
 				FeeRate:        lowFeeRate,
-				CoopWeight:     lntypes.WeightUnit(445),
+				CoopWeight:     lntypes.WeightUnit(444),
 				NonCoopWeight:  lntypes.WeightUnit(735),
 				IsExternalAddr: true,
 			},
@@ -142,7 +142,7 @@ func TestEstimateSweepFeeIncrement(t *testing.T) {
 			},
 			wantNewBatchFeeDetails: feeDetails{
 				FeeRate:        lowFeeRate,
-				CoopWeight:     lntypes.WeightUnit(409),
+				CoopWeight:     lntypes.WeightUnit(408),
 				NonCoopWeight:  lntypes.WeightUnit(699),
 				IsExternalAddr: true,
 			},
@@ -163,7 +163,7 @@ func TestEstimateSweepFeeIncrement(t *testing.T) {
 			},
 			wantNewBatchFeeDetails: feeDetails{
 				FeeRate:       lowFeeRate,
-				CoopWeight:    lntypes.WeightUnit(445),
+				CoopWeight:    lntypes.WeightUnit(444),
 				NonCoopWeight: lntypes.WeightUnit(735),
 				NonCoopHint:   true,
 			},
@@ -218,7 +218,7 @@ func TestEstimateBatchWeight(t *testing.T) {
 			wantBatchFeeDetails: feeDetails{
 				BatchId:       1,
 				FeeRate:       lowFeeRate,
-				CoopWeight:    lntypes.WeightUnit(445),
+				CoopWeight:    lntypes.WeightUnit(444),
 				NonCoopWeight: lntypes.WeightUnit(735),
 			},
 		},
@@ -242,7 +242,7 @@ func TestEstimateBatchWeight(t *testing.T) {
 			wantBatchFeeDetails: feeDetails{
 				BatchId:       1,
 				FeeRate:       lowFeeRate,
-				CoopWeight:    lntypes.WeightUnit(676),
+				CoopWeight:    lntypes.WeightUnit(674),
 				NonCoopWeight: lntypes.WeightUnit(1256),
 			},
 		},
@@ -266,7 +266,7 @@ func TestEstimateBatchWeight(t *testing.T) {
 			wantBatchFeeDetails: feeDetails{
 				BatchId:       1,
 				FeeRate:       lowFeeRate,
-				CoopWeight:    lntypes.WeightUnit(676),
+				CoopWeight:    lntypes.WeightUnit(674),
 				NonCoopWeight: lntypes.WeightUnit(1103),
 			},
 		},
@@ -287,7 +287,7 @@ func TestEstimateBatchWeight(t *testing.T) {
 			wantBatchFeeDetails: feeDetails{
 				BatchId:       1,
 				FeeRate:       highFeeRate,
-				CoopWeight:    lntypes.WeightUnit(445),
+				CoopWeight:    lntypes.WeightUnit(444),
 				NonCoopWeight: lntypes.WeightUnit(735),
 			},
 		},
@@ -312,7 +312,7 @@ func TestEstimateBatchWeight(t *testing.T) {
 			wantBatchFeeDetails: feeDetails{
 				BatchId:       1,
 				FeeRate:       lowFeeRate,
-				CoopWeight:    lntypes.WeightUnit(676),
+				CoopWeight:    lntypes.WeightUnit(674),
 				NonCoopWeight: lntypes.WeightUnit(1256),
 				NonCoopHint:   true,
 			},
@@ -336,7 +336,7 @@ func TestEstimateBatchWeight(t *testing.T) {
 			wantBatchFeeDetails: feeDetails{
 				BatchId:        1,
 				FeeRate:        lowFeeRate,
-				CoopWeight:     lntypes.WeightUnit(445),
+				CoopWeight:     lntypes.WeightUnit(444),
 				NonCoopWeight:  lntypes.WeightUnit(735),
 				IsExternalAddr: true,
 			},
diff --git a/sweepbatcher/sweep_batch.go b/sweepbatcher/sweep_batch.go
index c1d505265..05fdd9a11 100644
--- a/sweepbatcher/sweep_batch.go
+++ b/sweepbatcher/sweep_batch.go
@@ -22,6 +22,7 @@ import (
 	"github.com/lightninglabs/loop/labels"
 	"github.com/lightninglabs/loop/loopdb"
 	"github.com/lightninglabs/loop/swap"
+	sweeppkg "github.com/lightninglabs/loop/sweep"
 	"github.com/lightningnetwork/lnd/chainntnfs"
 	"github.com/lightningnetwork/lnd/input"
 	"github.com/lightningnetwork/lnd/keychain"
@@ -843,8 +844,7 @@ func (b *batch) publishBatchCoop(ctx context.Context) (btcutil.Amount,
 			PreviousOutPoint: sweep.outpoint,
 		})
 
-		// TODO: it should be txscript.SigHashDefault.
-		weightEstimate.AddTaprootKeySpendInput(txscript.SigHashAll)
+		weightEstimate.AddTaprootKeySpendInput(txscript.SigHashDefault)
 	}
 
 	var address btcutil.Address
@@ -870,7 +870,10 @@ func (b *batch) publishBatchCoop(ctx context.Context) (btcutil.Amount,
 		return fee, err, false
 	}
 
-	weightEstimate.AddP2TROutput()
+	err = sweeppkg.AddOutputEstimate(&weightEstimate, address)
+	if err != nil {
+		return fee, err, false
+	}
 
 	weight := weightEstimate.Weight()
 	feeForWeight := b.rbfCache.FeeRate.FeeForWeight(weight)
diff --git a/sweepbatcher/sweep_batcher_test.go b/sweepbatcher/sweep_batcher_test.go
index 592f86cd1..7314e9798 100644
--- a/sweepbatcher/sweep_batcher_test.go
+++ b/sweepbatcher/sweep_batcher_test.go
@@ -9,6 +9,7 @@ import (
 	"testing"
 	"time"
 
+	"github.com/btcsuite/btcd/blockchain"
 	"github.com/btcsuite/btcd/btcec/v2"
 	"github.com/btcsuite/btcd/btcutil"
 	"github.com/btcsuite/btcd/chaincfg/chainhash"
@@ -1937,7 +1938,7 @@ func testSweepFetcher(t *testing.T, store testStore,
 	// Provide min fee rate for the sweep.
 	feeRate := chainfee.SatPerKWeight(30000)
 	amt := btcutil.Amount(1_000_000)
-	weight := lntypes.WeightUnit(445) // Weight for 1-to-1 tx.
+	weight := lntypes.WeightUnit(396) // Weight for 1-to-1 tx.
 	expectedFee := feeRate.FeeForWeight(weight)
 
 	swap := &loopdb.LoopOutContract{
@@ -2000,8 +2001,9 @@ func testSweepFetcher(t *testing.T, store testStore,
 	}
 
 	batcher := NewBatcher(lnd.WalletKit, lnd.ChainNotifier, lnd.Signer,
-		testMuSig2SignSweep, testVerifySchnorrSig, lnd.ChainParams,
-		batcherStore, sweepFetcher, WithCustomFeeRate(customFeeRate))
+		nil, testVerifySchnorrSig, lnd.ChainParams,
+		batcherStore, sweepFetcher, WithCustomFeeRate(customFeeRate),
+		WithCustomSignMuSig2(testSignMuSig2func))
 
 	var wg sync.WaitGroup
 	wg.Add(1)
@@ -2052,6 +2054,12 @@ func testSweepFetcher(t *testing.T, store testStore,
 	out := btcutil.Amount(tx.TxOut[0].Value)
 	gotFee := amt - out
 	require.Equal(t, expectedFee, gotFee, "fees don't match")
+	gotWeight := lntypes.WeightUnit(
+		blockchain.GetTransactionWeight(btcutil.NewTx(tx)),
+	)
+	require.Equal(t, weight, gotWeight, "weights don't match")
+	gotFeeRate := chainfee.NewSatPerKWeight(gotFee, gotWeight)
+	require.Equal(t, feeRate, gotFeeRate, "fee rates don't match")
 
 	// Make sure we have stored the batch.
 	batches, err := batcherStore.FetchUnconfirmedSweepBatches(ctx)