diff --git a/app.go b/app.go
index 5e9c3e29e163..23ced043d047 100644
--- a/app.go
+++ b/app.go
@@ -55,6 +55,10 @@ import (
 	"github.com/cosmos/cosmos-sdk/x/evidence"
 	evidencekeeper "github.com/cosmos/cosmos-sdk/x/evidence/keeper"
 	evidencetypes "github.com/cosmos/cosmos-sdk/x/evidence/types"
+	feegrant "github.com/cosmos/cosmos-sdk/x/feegrant"
+	feegrantante "github.com/cosmos/cosmos-sdk/x/feegrant/ante"
+	feegrantkeeper "github.com/cosmos/cosmos-sdk/x/feegrant/keeper"
+	feegranttypes "github.com/cosmos/cosmos-sdk/x/feegrant/types"
 	"github.com/cosmos/cosmos-sdk/x/genutil"
 	genutiltypes "github.com/cosmos/cosmos-sdk/x/genutil/types"
 	"github.com/cosmos/cosmos-sdk/x/gov"
@@ -120,6 +124,7 @@ var (
 		crisis.AppModuleBasic{},
 		slashing.AppModuleBasic{},
 		ibc.AppModuleBasic{},
+		feegrant.AppModuleBasic{},
 		upgrade.AppModuleBasic{},
 		evidence.AppModuleBasic{},
 		transfer.AppModuleBasic{},
@@ -181,6 +186,7 @@ type SimApp struct {
 	IBCKeeper        *ibckeeper.Keeper // IBC Keeper must be a pointer in the app, so we can SetRouter on it correctly
 	EvidenceKeeper   evidencekeeper.Keeper
 	TransferKeeper   ibctransferkeeper.Keeper
+	FeeGrantKeeper   feegrantkeeper.Keeper
 
 	// make scoped keepers public for test purposes
 	ScopedIBCKeeper      capabilitykeeper.ScopedKeeper
@@ -222,7 +228,7 @@ func NewSimApp(
 	keys := sdk.NewKVStoreKeys(
 		authtypes.StoreKey, banktypes.StoreKey, stakingtypes.StoreKey,
 		minttypes.StoreKey, distrtypes.StoreKey, slashingtypes.StoreKey,
-		govtypes.StoreKey, paramstypes.StoreKey, ibchost.StoreKey, upgradetypes.StoreKey,
+		govtypes.StoreKey, paramstypes.StoreKey, ibchost.StoreKey, upgradetypes.StoreKey, feegranttypes.StoreKey,
 		evidencetypes.StoreKey, ibctransfertypes.StoreKey, capabilitytypes.StoreKey,
 		authztypes.StoreKey,
 	)
@@ -277,6 +283,8 @@ func NewSimApp(
 	app.CrisisKeeper = crisiskeeper.NewKeeper(
 		app.GetSubspace(crisistypes.ModuleName), invCheckPeriod, app.BankKeeper, authtypes.FeeCollectorName,
 	)
+
+	app.FeeGrantKeeper = feegrantkeeper.NewKeeper(appCodec, keys[feegranttypes.StoreKey], app.AccountKeeper)
 	app.UpgradeKeeper = upgradekeeper.NewKeeper(skipUpgradeHeights, keys[upgradetypes.StoreKey], appCodec, homePath)
 
 	// register the staking hooks
@@ -347,6 +355,7 @@ func NewSimApp(
 		bank.NewAppModule(appCodec, app.BankKeeper, app.AccountKeeper),
 		capability.NewAppModule(appCodec, *app.CapabilityKeeper),
 		crisis.NewAppModule(&app.CrisisKeeper, skipGenesisInvariants),
+		feegrant.NewAppModule(appCodec, app.AccountKeeper, app.BankKeeper, app.FeeGrantKeeper, app.interfaceRegistry),
 		gov.NewAppModule(appCodec, app.GovKeeper, app.AccountKeeper, app.BankKeeper),
 		mint.NewAppModule(appCodec, app.MintKeeper, app.AccountKeeper),
 		slashing.NewAppModule(appCodec, app.SlashingKeeper, app.AccountKeeper, app.BankKeeper, app.StakingKeeper),
@@ -379,6 +388,7 @@ func NewSimApp(
 		capabilitytypes.ModuleName, authtypes.ModuleName, banktypes.ModuleName, distrtypes.ModuleName, stakingtypes.ModuleName,
 		slashingtypes.ModuleName, govtypes.ModuleName, minttypes.ModuleName, crisistypes.ModuleName,
 		ibchost.ModuleName, genutiltypes.ModuleName, evidencetypes.ModuleName, authztypes.ModuleName, ibctransfertypes.ModuleName,
+		feegranttypes.ModuleName,
 	)
 
 	app.mm.RegisterInvariants(&app.CrisisKeeper)
@@ -396,6 +406,7 @@ func NewSimApp(
 		auth.NewAppModule(appCodec, app.AccountKeeper, authsims.RandomGenesisAccounts),
 		bank.NewAppModule(appCodec, app.BankKeeper, app.AccountKeeper),
 		capability.NewAppModule(appCodec, *app.CapabilityKeeper),
+		feegrant.NewAppModule(appCodec, app.AccountKeeper, app.BankKeeper, app.FeeGrantKeeper, app.interfaceRegistry),
 		gov.NewAppModule(appCodec, app.GovKeeper, app.AccountKeeper, app.BankKeeper),
 		mint.NewAppModule(appCodec, app.MintKeeper, app.AccountKeeper),
 		staking.NewAppModule(appCodec, app.StakingKeeper, app.AccountKeeper, app.BankKeeper),
@@ -419,8 +430,8 @@ func NewSimApp(
 	app.SetInitChainer(app.InitChainer)
 	app.SetBeginBlocker(app.BeginBlocker)
 	app.SetAnteHandler(
-		ante.NewAnteHandler(
-			app.AccountKeeper, app.BankKeeper, ante.DefaultSigVerificationGasConsumer,
+		feegrantante.NewAnteHandler(
+			app.AccountKeeper, app.BankKeeper, app.FeeGrantKeeper, ante.DefaultSigVerificationGasConsumer,
 			encodingConfig.TxConfig.SignModeHandler(),
 		),
 	)
diff --git a/params/weights.go b/params/weights.go
index 0ba377b009b1..a7ea85ef7c1d 100644
--- a/params/weights.go
+++ b/params/weights.go
@@ -20,4 +20,8 @@ const (
 	DefaultWeightCommunitySpendProposal int = 5
 	DefaultWeightTextProposal           int = 5
 	DefaultWeightParamChangeProposal    int = 5
+
+	// feegrant
+	DefaultWeightGrantFeeAllowance  int = 100
+	DefaultWeightRevokeFeeAllowance int = 100
 )