diff --git a/packages/instant/public/index.html b/packages/instant/public/index.html
index 2c4314fc27..f91809471f 100644
--- a/packages/instant/public/index.html
+++ b/packages/instant/public/index.html
@@ -203,6 +203,9 @@
                     onClose: () => {
                         console.log('0x Instant Closed');
                     },
+                    onSuccess: (txHash) => {
+                        console.log(`Success! Transaction hash is: ${txHash}`)
+                    }
                 };
                 const renderOptions = Object.assign({}, renderOptionsDefaults, removeUndefined(renderOptionsOverrides));
                 zeroExInstant.render(renderOptions);
diff --git a/packages/instant/src/components/zero_ex_instant_provider.tsx b/packages/instant/src/components/zero_ex_instant_provider.tsx
index aadd7c3a2e..0d9cfdcb08 100644
--- a/packages/instant/src/components/zero_ex_instant_provider.tsx
+++ b/packages/instant/src/components/zero_ex_instant_provider.tsx
@@ -10,7 +10,7 @@ import { asyncData } from '../redux/async_data';
 import { DEFAULT_STATE, DefaultState, State } from '../redux/reducer';
 import { store, Store } from '../redux/store';
 import { fonts } from '../style/fonts';
-import { AccountState, Network, QuoteFetchOrigin, ZeroExInstantBaseConfig } from '../types';
+import { AccountState, Network, QuoteFetchOrigin, ZeroExInstantBaseConfig, OrderProcessState } from '../types';
 import { analytics, disableAnalytics } from '../util/analytics';
 import { assetUtils } from '../util/asset';
 import { errorFlasher } from '../util/error_flasher';
@@ -19,6 +19,7 @@ import { gasPriceEstimator } from '../util/gas_price_estimator';
 import { Heartbeater } from '../util/heartbeater';
 import { generateAccountHeartbeater, generateBuyQuoteHeartbeater } from '../util/heartbeater_factory';
 import { providerStateFactory } from '../util/provider_state_factory';
+import { ActionTypes, actions } from '../redux/actions';
 
 export type ZeroExInstantProviderProps = ZeroExInstantBaseConfig;
 
@@ -97,6 +98,18 @@ export class ZeroExInstantProvider extends React.PureComponent<ZeroExInstantProv
     }
     public componentDidMount(): void {
         const state = this._store.getState();
+        this._store.subscribe(() => {
+            const currentState = this._store.getState();
+            if (
+                (currentState.buyOrderState.processState === OrderProcessState.Success) &&
+                (currentState.buyOrderState.performedCallback === false) &&
+                (this.props.onSuccess !== undefined)
+            ) {
+                const txHash = currentState.buyOrderState.txHash
+                this.props.onSuccess(txHash)
+                this._store.dispatch(actions.setBuyOrderStateSuccess(txHash, true))
+            }
+        })
         const dispatch = this._store.dispatch;
         // tslint:disable-next-line:no-floating-promises
         asyncData.fetchEthPriceAndDispatchToStore(dispatch);
diff --git a/packages/instant/src/containers/selected_asset_buy_order_state_buttons.ts b/packages/instant/src/containers/selected_asset_buy_order_state_buttons.ts
index 4da99cf047..deb482bd14 100644
--- a/packages/instant/src/containers/selected_asset_buy_order_state_buttons.ts
+++ b/packages/instant/src/containers/selected_asset_buy_order_state_buttons.ts
@@ -83,7 +83,7 @@ const mapDispatchToProps = (
     onBuyProcessing: (buyQuote: BuyQuote, txHash: string, startTimeUnix: number, expectedEndTimeUnix: number) => {
         dispatch(actions.setBuyOrderStateProcessing(txHash, startTimeUnix, expectedEndTimeUnix));
     },
-    onBuySuccess: (buyQuote: BuyQuote, txHash: string) => dispatch(actions.setBuyOrderStateSuccess(txHash)),
+    onBuySuccess: (buyQuote: BuyQuote, txHash: string) => dispatch(actions.setBuyOrderStateSuccess(txHash, false)),
     onBuyFailure: (buyQuote: BuyQuote, txHash: string) => dispatch(actions.setBuyOrderStateFailure(txHash)),
     onSignatureDenied: () => {
         dispatch(actions.resetAmount());
diff --git a/packages/instant/src/redux/actions.ts b/packages/instant/src/redux/actions.ts
index 013527f752..86aacd3628 100644
--- a/packages/instant/src/redux/actions.ts
+++ b/packages/instant/src/redux/actions.ts
@@ -58,7 +58,7 @@ export const actions = {
     setBuyOrderStateProcessing: (txHash: string, startTimeUnix: number, expectedEndTimeUnix: number) =>
         createAction(ActionTypes.SetBuyOrderStateProcessing, { txHash, startTimeUnix, expectedEndTimeUnix }),
     setBuyOrderStateFailure: (txHash: string) => createAction(ActionTypes.SetBuyOrderStateFailure, txHash),
-    setBuyOrderStateSuccess: (txHash: string) => createAction(ActionTypes.SetBuyOrderStateSuccess, txHash),
+    setBuyOrderStateSuccess: (txHash: string, performedCallback: boolean) => createAction(ActionTypes.SetBuyOrderStateSuccess, {txHash, performedCallback}),
     updateLatestBuyQuote: (buyQuote?: BuyQuote) => createAction(ActionTypes.UpdateLatestBuyQuote, buyQuote),
     updateSelectedAsset: (asset: Asset) => createAction(ActionTypes.UpdateSelectedAsset, asset),
     setAvailableAssets: (availableAssets: Asset[]) => createAction(ActionTypes.SetAvailableAssets, availableAssets),
diff --git a/packages/instant/src/redux/reducer.ts b/packages/instant/src/redux/reducer.ts
index 86963c7917..19890d2158 100644
--- a/packages/instant/src/redux/reducer.ts
+++ b/packages/instant/src/redux/reducer.ts
@@ -157,6 +157,7 @@ export const createReducer = (initialState: State) => {
                     buyOrderState: {
                         processState: OrderProcessState.Processing,
                         txHash: processingData.txHash,
+                        performedCallback: false,
                         progress: {
                             startTimeUnix,
                             expectedEndTimeUnix,
@@ -171,6 +172,7 @@ export const createReducer = (initialState: State) => {
                         return {
                             ...state,
                             buyOrderState: {
+                                performedCallback: false,
                                 processState: OrderProcessState.Failure,
                                 txHash,
                                 progress,
@@ -180,13 +182,14 @@ export const createReducer = (initialState: State) => {
                 }
                 return state;
             case ActionTypes.SetBuyOrderStateSuccess:
-                const successTxHash = action.data;
+                const successTxHash = action.data.txHash;
                 if ('txHash' in state.buyOrderState) {
                     if (state.buyOrderState.txHash === successTxHash) {
                         const { txHash, progress } = state.buyOrderState;
                         return {
                             ...state,
                             buyOrderState: {
+                                performedCallback: action.data.performedCallback,
                                 processState: OrderProcessState.Success,
                                 txHash,
                                 progress,
diff --git a/packages/instant/src/types.ts b/packages/instant/src/types.ts
index 109ee44a5b..e058e22a06 100644
--- a/packages/instant/src/types.ts
+++ b/packages/instant/src/types.ts
@@ -43,6 +43,7 @@ interface OrderStatePostTx {
     processState: OrderProcessState.Processing | OrderProcessState.Success | OrderProcessState.Failure;
     txHash: string;
     progress: SimulatedProgress;
+    performedCallback: boolean
 }
 export type OrderState = OrderStatePreTx | OrderStatePostTx;
 
@@ -201,6 +202,7 @@ export interface ZeroExInstantOptionalBaseConfig {
     networkId: Network;
     affiliateInfo: AffiliateInfo;
     shouldDisableAnalyticsTracking: boolean;
+    onSuccess?: (txHash: string) => void;
 }
 
 export type ZeroExInstantBaseConfig = ZeroExInstantRequiredBaseConfig & Partial<ZeroExInstantOptionalBaseConfig>;