diff --git a/chain/market/fundmanager.go b/chain/market/fundmanager.go
index 5df7589fa..e5fcf0b80 100644
--- a/chain/market/fundmanager.go
+++ b/chain/market/fundmanager.go
@@ -2,6 +2,7 @@ package market
 
 import (
 	"context"
+	"fmt"
 	"sync"
 
 	"github.com/filecoin-project/go-address"
@@ -501,7 +502,13 @@ func (a *fundedAddress) processWithdrawals(withdrawals []*fundRequest) (msgCid c
 		// request with an error
 		newWithdrawalAmt := types.BigAdd(withdrawalAmt, amt)
 		if newWithdrawalAmt.GreaterThan(netAvail) {
-			err := xerrors.Errorf("insufficient funds for withdrawal of %d", amt)
+			msg := fmt.Sprintf("insufficient funds for withdrawal of %s: ", types.FIL(amt))
+			msg += fmt.Sprintf("net available (%s) = available (%s) - reserved (%s)",
+				types.FIL(types.BigSub(netAvail, withdrawalAmt)), types.FIL(avail), types.FIL(a.state.AmtReserved))
+			if !withdrawalAmt.IsZero() {
+				msg += fmt.Sprintf(" - queued withdrawals (%s)", types.FIL(withdrawalAmt))
+			}
+			err := xerrors.Errorf(msg)
 			a.debugf("%s", err)
 			req.Complete(cid.Undef, err)
 			continue