diff --git a/src/routes/safe/components/Balances/SendModal/screens/ContractInteraction/Buttons/index.tsx b/src/routes/safe/components/Balances/SendModal/screens/ContractInteraction/Buttons/index.tsx
index 65b10f30..82db6855 100644
--- a/src/routes/safe/components/Balances/SendModal/screens/ContractInteraction/Buttons/index.tsx
+++ b/src/routes/safe/components/Balances/SendModal/screens/ContractInteraction/Buttons/index.tsx
@@ -9,7 +9,11 @@ import { isReadMethod } from 'src/routes/safe/components/Balances/SendModal/scre
 
 const useStyles = makeStyles(styles)
 
-const Buttons = ({ onClose }) => {
+export interface ButtonProps {
+  onClose: () => void
+}
+
+const Buttons = ({ onClose }: ButtonProps) => {
   const classes = useStyles()
   const {
     input: { value: method },
diff --git a/src/routes/safe/components/Balances/SendModal/screens/ContractInteraction/ContractABI/index.tsx b/src/routes/safe/components/Balances/SendModal/screens/ContractInteraction/ContractABI/index.tsx
index 37aabf00..fe47ee3f 100644
--- a/src/routes/safe/components/Balances/SendModal/screens/ContractInteraction/ContractABI/index.tsx
+++ b/src/routes/safe/components/Balances/SendModal/screens/ContractInteraction/ContractABI/index.tsx
@@ -7,7 +7,7 @@ import { extractUsefulMethods } from 'src/logic/contractInteraction/sources/ABIS
 
 export const NO_DATA = 'no data'
 
-const mustBeValidABI = (abi) => {
+const mustBeValidABI = (abi: string): undefined | string => {
   try {
     const parsedABI = extractUsefulMethods(JSON.parse(abi))
 
@@ -15,7 +15,7 @@ const mustBeValidABI = (abi) => {
       return NO_DATA
     }
   } catch (e) {
-    return []
+    return NO_DATA
   }
 }
 
diff --git a/src/routes/safe/components/Balances/SendModal/screens/ContractInteraction/EthAddressInput/index.tsx b/src/routes/safe/components/Balances/SendModal/screens/ContractInteraction/EthAddressInput/index.tsx
index cf5c652c..91ddf4df 100644
--- a/src/routes/safe/components/Balances/SendModal/screens/ContractInteraction/EthAddressInput/index.tsx
+++ b/src/routes/safe/components/Balances/SendModal/screens/ContractInteraction/EthAddressInput/index.tsx
@@ -16,7 +16,15 @@ import { styles } from 'src/routes/safe/components/Balances/SendModal/screens/Co
 
 const useStyles = makeStyles(styles)
 
-const EthAddressInput = ({ isContract = true, isRequired = true, name, onScannedValue, text }) => {
+export interface EthAddressProps {
+  isContract?: boolean
+  isRequired?: boolean
+  name: string
+  onScannedValue: (scannedValue: string) => void
+  text: string
+}
+
+const EthAddressInput = ({ isContract = true, isRequired = true, name, onScannedValue, text }: EthAddressProps) => {
   const classes = useStyles()
   const validatorsList = [isRequired && required, mustBeEthereumAddress, isContract && mustBeEthereumContractAddress]
   const validate = composeValidators(...validatorsList.filter((_) => _))
diff --git a/src/routes/safe/components/Balances/SendModal/screens/ContractInteraction/EthValue/index.tsx b/src/routes/safe/components/Balances/SendModal/screens/ContractInteraction/EthValue/index.tsx
index b9cafb46..0a020269 100644
--- a/src/routes/safe/components/Balances/SendModal/screens/ContractInteraction/EthValue/index.tsx
+++ b/src/routes/safe/components/Balances/SendModal/screens/ContractInteraction/EthValue/index.tsx
@@ -17,7 +17,10 @@ import { safeSelector } from 'src/routes/safe/store/selectors'
 
 const useStyles = makeStyles(styles)
 
-const EthValue = ({ onSetMax }) => {
+interface EthValueProps {
+  onSetMax: (ethBalance: string) => void
+}
+const EthValue = ({ onSetMax }: EthValueProps) => {
   const classes = useStyles()
   const { ethBalance } = useSelector(safeSelector)
   const {
diff --git a/src/routes/safe/components/Balances/SendModal/screens/ContractInteraction/Header/index.tsx b/src/routes/safe/components/Balances/SendModal/screens/ContractInteraction/Header/index.tsx
index e46798f1..b8a8dc5c 100644
--- a/src/routes/safe/components/Balances/SendModal/screens/ContractInteraction/Header/index.tsx
+++ b/src/routes/safe/components/Balances/SendModal/screens/ContractInteraction/Header/index.tsx
@@ -9,7 +9,13 @@ import { styles } from 'src/routes/safe/components/Balances/SendModal/screens/Co
 
 const useStyles = makeStyles(styles)
 
-const Header = ({ onClose, subTitle, title }) => {
+interface HeaderProps {
+  onClose: () => void
+  subTitle: string
+  title: string
+}
+
+const Header = ({ onClose, subTitle, title }: HeaderProps) => {
   const classes = useStyles()
 
   return (
diff --git a/src/routes/safe/components/Balances/SendModal/screens/ContractInteraction/MethodsDropdown/index.tsx b/src/routes/safe/components/Balances/SendModal/screens/ContractInteraction/MethodsDropdown/index.tsx
index b9988c81..30da6a7f 100644
--- a/src/routes/safe/components/Balances/SendModal/screens/ContractInteraction/MethodsDropdown/index.tsx
+++ b/src/routes/safe/components/Balances/SendModal/screens/ContractInteraction/MethodsDropdown/index.tsx
@@ -19,7 +19,11 @@ import { extractUsefulMethods } from 'src/logic/contractInteraction/sources/ABIS
 
 const MENU_WIDTH = '452px'
 
-const MethodsDropdown = ({ onChange }) => {
+interface MethodsDropdownProps {
+  onChange: ({}) => void
+}
+
+const MethodsDropdown = ({ onChange }: MethodsDropdownProps) => {
   const classes = useDropdownStyles({ buttonWidth: MENU_WIDTH })
   const {
     input: { value: abi },
diff --git a/src/routes/safe/components/Balances/SendModal/screens/ContractInteraction/index.tsx b/src/routes/safe/components/Balances/SendModal/screens/ContractInteraction/index.tsx
index 34fa54bf..b99c3a90 100644
--- a/src/routes/safe/components/Balances/SendModal/screens/ContractInteraction/index.tsx
+++ b/src/routes/safe/components/Balances/SendModal/screens/ContractInteraction/index.tsx
@@ -22,7 +22,21 @@ import { abiExtractor, createTxObject, formMutators, handleSubmitError, isReadMe
 
 const useStyles = makeStyles(styles)
 
-const ContractInteraction = ({ contractAddress, initialValues, onClose, onNext }) => {
+export interface CreatedTx {
+  contractAddress: string
+  data: string
+  selectedMethod: {}
+  value: string | number
+}
+
+export interface ContractInteractionProps {
+  contractAddress: string
+  initialValues: { contractAddress?: string }
+  onClose: () => void
+  onNext: ({}: CreatedTx) => void
+}
+
+const ContractInteraction = ({ contractAddress, initialValues, onClose, onNext }: ContractInteractionProps) => {
   const classes = useStyles()
   const { address: safeAddress = '' } = useSelector(safeSelector)
   let setCallResults