diff --git a/cli/client.go b/cli/client.go
index 3bfc5de70..9787df37e 100644
--- a/cli/client.go
+++ b/cli/client.go
@@ -8,7 +8,9 @@ import (
 	"text/tabwriter"
 
 	"github.com/ipfs/go-cid"
+	"github.com/ipfs/go-cidutil/cidenc"
 	"github.com/libp2p/go-libp2p-core/peer"
+	"github.com/multiformats/go-multibase"
 	"golang.org/x/xerrors"
 	"gopkg.in/urfave/cli.v2"
 
@@ -21,6 +23,32 @@ import (
 	"github.com/filecoin-project/lotus/chain/types"
 )
 
+var CidBaseFlag = cli.StringFlag{
+	Name:        "cid-base",
+	Hidden:      true,
+	Value:       "base32",
+	Usage:       "Multibase encoding used for version 1 CIDs in output.",
+	DefaultText: "base32",
+}
+
+// GetCidEncoder returns an encoder using the `cid-base` flag if provided, or
+// the default (Base32) encoder if not.
+func GetCidEncoder(cctx *cli.Context) (cidenc.Encoder, error) {
+	val := cctx.String("cid-base")
+
+	e := cidenc.Encoder{Base: multibase.MustNewEncoder(multibase.Base32)}
+
+	if val != "" {
+		var err error
+		e.Base, err = multibase.EncoderByName(val)
+		if err != nil {
+			return e, err
+		}
+	}
+
+	return e, nil
+}
+
 var clientCmd = &cli.Command{
 	Name:  "client",
 	Usage: "Make deals, store data, retrieve data",
@@ -46,6 +74,7 @@ var clientImportCmd = &cli.Command{
 			Name:  "car",
 			Usage: "import from a car file instead of a regular file",
 		},
+		&CidBaseFlag,
 	},
 	Action: func(cctx *cli.Context) error {
 		api, closer, err := GetFullNodeAPI(cctx)
@@ -67,7 +96,14 @@ var clientImportCmd = &cli.Command{
 		if err != nil {
 			return err
 		}
-		fmt.Println(c.String())
+
+		encoder, err := GetCidEncoder(cctx)
+		if err != nil {
+			return err
+		}
+
+		fmt.Println(encoder.Encode(c))
+
 		return nil
 	},
 }
@@ -76,6 +112,9 @@ var clientCommPCmd = &cli.Command{
 	Name:      "commP",
 	Usage:     "calculate the piece-cid (commP) of a CAR file",
 	ArgsUsage: "[inputFile minerAddress]",
+	Flags: []cli.Flag{
+		&CidBaseFlag,
+	},
 	Action: func(cctx *cli.Context) error {
 		api, closer, err := GetFullNodeAPI(cctx)
 		if err != nil {
@@ -94,11 +133,16 @@ var clientCommPCmd = &cli.Command{
 		}
 
 		ret, err := api.ClientCalcCommP(ctx, cctx.Args().Get(0), miner)
-
 		if err != nil {
 			return err
 		}
-		fmt.Println("CID: ", ret.Root)
+
+		encoder, err := GetCidEncoder(cctx)
+		if err != nil {
+			return err
+		}
+
+		fmt.Println("CID: ", encoder.Encode(ret.Root))
 		fmt.Println("Piece size: ", ret.Size)
 		return nil
 	},
@@ -137,6 +181,9 @@ var clientCarGenCmd = &cli.Command{
 var clientLocalCmd = &cli.Command{
 	Name:  "local",
 	Usage: "List locally imported data",
+	Flags: []cli.Flag{
+		&CidBaseFlag,
+	},
 	Action: func(cctx *cli.Context) error {
 		api, closer, err := GetFullNodeAPI(cctx)
 		if err != nil {
@@ -149,8 +196,14 @@ var clientLocalCmd = &cli.Command{
 		if err != nil {
 			return err
 		}
+
+		encoder, err := GetCidEncoder(cctx)
+		if err != nil {
+			return err
+		}
+
 		for _, v := range list {
-			fmt.Printf("%s %s %d %s\n", v.Key, v.FilePath, v.Size, v.Status)
+			fmt.Printf("%s %s %d %s\n", encoder.Encode(v.Key), v.FilePath, v.Size, v.Status)
 		}
 		return nil
 	},
@@ -178,6 +231,7 @@ var clientDealCmd = &cli.Command{
 			Usage: "specify the epoch that the deal should start at",
 			Value: -1,
 		},
+		&CidBaseFlag,
 	},
 	Action: func(cctx *cli.Context) error {
 		api, closer, err := GetFullNodeAPI(cctx)
@@ -263,7 +317,13 @@ var clientDealCmd = &cli.Command{
 			return err
 		}
 
-		fmt.Println(proposal)
+		encoder, err := GetCidEncoder(cctx)
+		if err != nil {
+			return err
+		}
+
+		fmt.Println(encoder.Encode(*proposal))
+
 		return nil
 	},
 }
diff --git a/go.mod b/go.mod
index b594dd8d0..44a921aa2 100644
--- a/go.mod
+++ b/go.mod
@@ -44,6 +44,7 @@ require (
 	github.com/ipfs/go-block-format v0.0.2
 	github.com/ipfs/go-blockservice v0.1.3
 	github.com/ipfs/go-cid v0.0.6-0.20200501230655-7c82f3b81c00
+	github.com/ipfs/go-cidutil v0.0.2
 	github.com/ipfs/go-datastore v0.4.4
 	github.com/ipfs/go-ds-badger2 v0.1.0
 	github.com/ipfs/go-filestore v1.0.0
@@ -95,6 +96,7 @@ require (
 	github.com/multiformats/go-multiaddr v0.2.2
 	github.com/multiformats/go-multiaddr-dns v0.2.0
 	github.com/multiformats/go-multiaddr-net v0.1.5
+	github.com/multiformats/go-multibase v0.0.2
 	github.com/multiformats/go-multihash v0.0.13
 	github.com/opentracing/opentracing-go v1.1.0
 	github.com/stretchr/objx v0.2.0 // indirect
diff --git a/go.sum b/go.sum
index c05655afa..f209c20cf 100644
--- a/go.sum
+++ b/go.sum
@@ -345,6 +345,8 @@ github.com/ipfs/go-cid v0.0.4/go.mod h1:4LLaPOQwmk5z9LBgQnpkivrx8BJjUyGwTXCd5Xfj
 github.com/ipfs/go-cid v0.0.5/go.mod h1:plgt+Y5MnOey4vO4UlUazGqdbEXuFYitED67FexhXog=
 github.com/ipfs/go-cid v0.0.6-0.20200501230655-7c82f3b81c00 h1:QN88Q0kT2QiDaLxpR/SDsqOBtNIEF/F3n96gSDUimkA=
 github.com/ipfs/go-cid v0.0.6-0.20200501230655-7c82f3b81c00/go.mod h1:plgt+Y5MnOey4vO4UlUazGqdbEXuFYitED67FexhXog=
+github.com/ipfs/go-cidutil v0.0.2 h1:CNOboQf1t7Qp0nuNh8QMmhJs0+Q//bRL1axtCnIB1Yo=
+github.com/ipfs/go-cidutil v0.0.2/go.mod h1:ewllrvrxG6AMYStla3GD7Cqn+XYSLqjK0vc+086tB6s=
 github.com/ipfs/go-datastore v0.0.1/go.mod h1:d4KVXhMt913cLBEI/PXAy6ko+W7e9AhyAKBGh803qeE=
 github.com/ipfs/go-datastore v0.0.5/go.mod h1:d4KVXhMt913cLBEI/PXAy6ko+W7e9AhyAKBGh803qeE=
 github.com/ipfs/go-datastore v0.1.0/go.mod h1:d4KVXhMt913cLBEI/PXAy6ko+W7e9AhyAKBGh803qeE=