diff --git a/.circleci/config.yml b/.circleci/config.yml
index 76c515c40..2a42d6ba8 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -128,7 +128,7 @@ workflows:
             - build-dev
           filters:
             branches:
-              only: ['dev', 'feature/cf-2.20']
+              only: ['dev', 'feature/billing_account_protection']
 
       - deployTest01:
           context : org-global
diff --git a/src/api/billingAccounts.js b/src/api/billingAccounts.js
index 5b986857e..639cbe944 100644
--- a/src/api/billingAccounts.js
+++ b/src/api/billingAccounts.js
@@ -12,3 +12,14 @@ export function fetchBillingAccounts(projectId) {
   return axios.get(`${TC_API_URL}/v5/projects/${projectId}/billingAccounts`)
 }
 
+
+/**
+ * Get billing account based on project id
+ *
+ * @param {String} projectId Id of the project
+ *
+ * @returns {Promise<Object>} Billing account data
+ */
+export function fetchBillingAccount(projectId) {
+  return axios.get(`${TC_API_URL}/v5/projects/${projectId}/billingAccount`)
+}
diff --git a/src/assets/icons/v.2.5/icon-warning.svg b/src/assets/icons/v.2.5/icon-warning.svg
new file mode 100644
index 000000000..f3e59dfbe
--- /dev/null
+++ b/src/assets/icons/v.2.5/icon-warning.svg
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg width="16px" height="16px" viewBox="0 0 16 16" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+    <!-- Generator: Sketch 47 (45396) - http://www.bohemiancoding.com/sketch -->
+    <desc>Created with Sketch.</desc>
+    <defs></defs>
+    <g id="Notifications-Page" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
+        <g id="notification-warning" fill="#ff5b52">
+            <path d="M15.0007482,15.9565 L1.00074817,15.9565 C0.653748171,15.9565 0.332748171,15.7765 0.149748171,15.4815 C-0.0332518286,15.1865 -0.0492518286,14.8185 0.105748171,14.5085 L7.10574817,0.5085 C7.44574817,-0.1695 8.55474817,-0.1695 8.89474817,0.5085 L15.8947482,14.5085 C16.0497482,14.8185 16.0337482,15.1865 15.8507482,15.4815 C15.6677482,15.7765 15.3477482,15.9565 15.0007482,15.9565 Z M2.61874817,13.9565 L13.3827482,13.9565 L8.00074817,3.1925 L2.61874817,13.9565 Z" id="Shape"></path>
+            <rect id="Rectangle-path" x="7" y="6" width="2" height="4"></rect>
+            <circle id="Oval" cx="8" cy="12" r="1"></circle>
+        </g>
+    </g>
+</svg>
diff --git a/src/config/constants.js b/src/config/constants.js
index a1a0179c9..d88942685 100644
--- a/src/config/constants.js
+++ b/src/config/constants.js
@@ -120,6 +120,13 @@ export const CLEAR_PROJECT_SUGGESTIONS_SEARCH   = 'CLEAR_PROJECT_SUGGESTIONS_SEA
 export const PROJECT_SUGGESTIONS_SEARCH_FAILURE     = 'PROJECT_SUGGESTIONS_SEARCH_FAILURE'
 export const PROJECT_SUGGESTIONS_SEARCH_SUCCESS     = 'PROJECT_SUGGESTIONS_SEARCH_SUCCESS'
 
+
+// project billingAccount
+export const LOAD_PROJECT_BILLING_ACCOUNT             = 'LOAD_PROJECT_BILLING_ACCOUNT'
+export const LOAD_PROJECT_BILLING_ACCOUNT_PENDING     = 'LOAD_PROJECT_BILLING_ACCOUNT_PENDING'
+export const LOAD_PROJECT_BILLING_ACCOUNT_FAILURE     = 'LOAD_PROJECT_BILLING_ACCOUNT_FAILURE'
+export const LOAD_PROJECT_BILLING_ACCOUNT_SUCCESS     = 'LOAD_PROJECT_BILLING_ACCOUNT_SUCCESS'
+
 // Project Dashboard
 export const LOAD_PROJECT_DASHBOARD             = 'LOAD_PROJECT_DASHBOARD'
 export const LOAD_PROJECT_DASHBOARD_PENDING     = 'LOAD_PROJECT_DASHBOARD_PENDING'
diff --git a/src/helpers/projectHelper.js b/src/helpers/projectHelper.js
index bab78e28d..047a18a1d 100644
--- a/src/helpers/projectHelper.js
+++ b/src/helpers/projectHelper.js
@@ -20,6 +20,7 @@ import ReportsIcon from '../assets/icons/v.2.5/icon-reports.svg'
 import AssetsLibraryIcon from '../assets/icons/v.2.5/icon-assets-library.svg'
 import FAQIcon from '../assets/icons/faq.svg'
 import AccountSecurityIcon from 'assets/icons/v.2.5/icon-account-security.svg'
+import WarningIcon from '../assets/icons/v.2.5/icon-warning.svg'
 import InvisibleIcon from '../assets/icons/invisible.svg'
 
 import { formatNumberWithCommas } from './format'
@@ -259,8 +260,9 @@ export function getNewProjectLink(orgConfigs) {
  * Get the list of navigation links for project details view
  * @param {Object} project - The project object
  * @param {string} projectId - The project id
+ * @param {boolean} isBillingAccountExpired - is billingAccount expired
  */
-export function getProjectNavLinks(project, projectId, renderFAQs) {
+export function getProjectNavLinks(project, projectId, renderFAQs, isBillingAccountExpired) {
   let messagesTab = null
   // `Discussions` items can be added as soon as project is loaded
   // if discussions are not hidden for it
@@ -289,7 +291,11 @@ export function getProjectNavLinks(project, projectId, renderFAQs) {
   }
 
   if (hasPermission(PERMISSIONS.VIEW_PROJECT_SETTINGS)) {
-    navLinks.push({ label: 'Project Settings', to: `/projects/${projectId}/settings`, Icon: AccountSecurityIcon, iconClassName: 'stroke' })
+    if (!isBillingAccountExpired) {
+      navLinks.push({ label: 'Project Settings', to: `/projects/${projectId}/settings`, Icon: AccountSecurityIcon, iconClassName: 'stroke' })
+    }else {
+      navLinks.push({ label: <span>Project Settings <WarningIcon style={{position: 'absolute', marginLeft: '5px'}}/></span>, to: `/projects/${projectId}/settings`, Icon: AccountSecurityIcon, iconClassName: 'stroke' })
+    }
   }
 
   return navLinks
diff --git a/src/projects/actions/project.js b/src/projects/actions/project.js
index a4b64b3ad..848e2540d 100644
--- a/src/projects/actions/project.js
+++ b/src/projects/actions/project.js
@@ -13,6 +13,7 @@ import { getProjectById,
   createScopeChangeRequest as createScopeChangeRequestAPI,
   updateScopeChangeRequest as updateScopeChangeRequestAPI,
 } from '../../api/projects'
+import {fetchBillingAccount} from '../../api/billingAccounts'
 import {
   getProjectInviteById,
   getProjectMemberInvites,
@@ -26,6 +27,7 @@ import {
 } from '../../api/projectMembers'
 // import { loadProductTimelineWithMilestones } from './productsTimelines'
 import {
+  LOAD_PROJECT_BILLING_ACCOUNT,
   LOAD_PROJECT,
   LOAD_PROJECT_MEMBER_INVITE,
   CREATE_PROJECT,
@@ -661,6 +663,15 @@ export function loadProjectMembers(projectId) {
   }
 }
 
+export function loadProjectBillingAccount(projectId) {
+  return (dispatch) => {
+    return dispatch({
+      type: LOAD_PROJECT_BILLING_ACCOUNT,
+      payload: fetchBillingAccount(projectId)
+    })
+  }
+}
+
 export function loadProjectMemberInvites(projectId) {
   return (dispatch) => {
     return dispatch({
diff --git a/src/projects/actions/projectDashboard.js b/src/projects/actions/projectDashboard.js
index efb9127e2..ef083cea9 100644
--- a/src/projects/actions/projectDashboard.js
+++ b/src/projects/actions/projectDashboard.js
@@ -1,5 +1,5 @@
 import _ from 'lodash'
-import { loadProject, loadProjectInvite, loadProjectMembers, loadProjectMemberInvites } from './project'
+import { loadProject, loadProjectBillingAccount, loadProjectInvite, loadProjectMembers, loadProjectMemberInvites } from './project'
 import { loadProjectPlan } from './projectPlan'
 import { loadProjectsMetadata } from '../../actions/templates'
 import { LOAD_PROJECT_DASHBOARD, LOAD_ADDITIONAL_PROJECT_DATA } from '../../config/constants'
@@ -27,10 +27,13 @@ const getDashboardData = (dispatch, getState, projectId, isOnlyLoadProjectInfo)
         //dispatch(loadMembers(userIds)),
         dispatch(loadProjectMembers(projectId)),
         dispatch(loadProjectMemberInvites(projectId))
+
       ]
       if (isOnlyLoadProjectInfo) {
         promises = []
       }
+      // load project billingAccounts
+      promises.push(dispatch(loadProjectBillingAccount(projectId)))
 
       // for new projects load phases, products, project template and product templates
       if (['v3', 'v4'].indexOf(project.version) !== -1) {
diff --git a/src/projects/detail/components/BillingAccountField/index.js b/src/projects/detail/components/BillingAccountField/index.js
index f466e0e3c..d28a4bb1b 100644
--- a/src/projects/detail/components/BillingAccountField/index.js
+++ b/src/projects/detail/components/BillingAccountField/index.js
@@ -1,5 +1,6 @@
 import React from 'react'
 import moment from 'moment'
+import _ from 'lodash'
 import {HOC as hoc} from 'formsy-react'
 
 import Select from '../../../../components/Select/Select'
@@ -27,6 +28,8 @@ class BillingAccountField extends React.Component {
       isLoading: true,
       billingAccounts: [],
       selectedBillingAccount: null,
+      defaultBillingAccount: null,
+      isDefaultBillingAccountExpired: false,
     }
 
     this.handleChange = this.handleChange.bind(this)
@@ -60,6 +63,10 @@ class BillingAccountField extends React.Component {
             })
 
             billingAccounts = [selectedBillingAccount, ...billingAccounts]
+            this.setState({
+              defaultBillingAccount: selectedBillingAccount,
+              isDefaultBillingAccountExpired: this.props.isExpired
+            })
           }
         }
 
@@ -74,9 +81,16 @@ class BillingAccountField extends React.Component {
   handleChange(value) {
     this.setState({ selectedBillingAccount: value })
     this.props.setValue(value ? value.value : null)
+    this.props.setBillingAccountExpired && this.props.setBillingAccountExpired(this.isCurrentBillingAccountExpired(value))
+  }
+
+  isCurrentBillingAccountExpired(nextSelectedBillingAccount) {
+    const {defaultBillingAccount, isDefaultBillingAccountExpired, selectedBillingAccount} = this.state
+    return isDefaultBillingAccountExpired && _.get(defaultBillingAccount, 'value') === _.get(nextSelectedBillingAccount || selectedBillingAccount, 'value')
   }
 
   render() {
+
     const placeholder = this.state.billingAccounts.length > 0
       ? 'Select billing account'
       : 'No Billing Account Available'
@@ -92,6 +106,7 @@ class BillingAccountField extends React.Component {
           isDisabled={this.state.billingAccounts.length === 0}
           showDropdownIndicator
         />
+        {this.isCurrentBillingAccountExpired() &&  <span className="error-message">Expired</span>}
         {this.state.selectedBillingAccount && (
           <div className={styles.manageBillingAccountLinkWrapper}>
             <a
diff --git a/src/projects/detail/components/EditProjectDefaultsForm/EditProjectDefaultsForm.jsx b/src/projects/detail/components/EditProjectDefaultsForm/EditProjectDefaultsForm.jsx
index f4cc539fa..d9a91b332 100644
--- a/src/projects/detail/components/EditProjectDefaultsForm/EditProjectDefaultsForm.jsx
+++ b/src/projects/detail/components/EditProjectDefaultsForm/EditProjectDefaultsForm.jsx
@@ -3,7 +3,7 @@ import {connect} from 'react-redux'
 import _ from 'lodash'
 import FormsyForm from 'appirio-tech-react-components/components/Formsy'
 const Formsy = FormsyForm.Formsy
-import { updateProject } from '../../../actions/project'
+import { updateProject, loadProjectBillingAccount } from '../../../actions/project'
 import NDAField from '../NDAField'
 import GroupsField from '../GroupsField'
 import BillingAccountField from '../BillingAccountField'
@@ -18,11 +18,13 @@ class EditProjectDefaultsForm extends React.Component {
 
     this.state = {
       enableButton: false,
-      isLoading: true
+      isLoading: true,
+      isBillingAccountExpired: false,
     }
 
     this.handleChange = this.handleChange.bind(this)
     this.handleSubmit = this.handleSubmit.bind(this)
+    this.setBillingAccountExpired = this.setBillingAccountExpired.bind(this)
   }
 
   componentDidMount() {
@@ -35,6 +37,11 @@ class EditProjectDefaultsForm extends React.Component {
     }
   }
 
+  setBillingAccountExpired(value) {
+    this.setState({
+      isBillingAccountExpired: value
+    })
+  }
   handleChange(changed) {
     const keys = _.intersection(Object.keys(changed), Object.keys(this.state.project))
     const reqProjectState = keys.reduce((acc, curr) => {
@@ -52,7 +59,7 @@ class EditProjectDefaultsForm extends React.Component {
   }
 
   handleSubmit() {
-    const {updateProject} = this.props
+    const {updateProject, loadProjectBillingAccount} = this.props
     const {id} = this.props.project
     const updateProjectObj = Object.keys(this.state.project)
       .filter(key => !_.isEqual(this.props.project[key], this.state.project[key]))
@@ -61,7 +68,7 @@ class EditProjectDefaultsForm extends React.Component {
         return acc
       }, {})
     updateProject(id, updateProjectObj)
-      .then(() => this.setState({enableButton: false}))
+      .then(() => this.setState({enableButton: false})).then(() => loadProjectBillingAccount(id))
       .catch(console.error)
   }
 
@@ -86,14 +93,16 @@ class EditProjectDefaultsForm extends React.Component {
             <BillingAccountField
               name="billingAccountId"
               projectId={this.state.project.id}
+              isExpired={this.props.isBillingAccountExpired}
               value={this.state.project.billingAccountId}
+              setBillingAccountExpired={this.setBillingAccountExpired}
             />
           </div>
           <div className="section-footer section-footer-spec">
             <button
               className="tc-btn tc-btn-primary tc-btn-md"
               type="submit"
-              disabled={!this.state.enableButton}
+              disabled={this.state.isBillingAccountExpired || !this.state.enableButton}
             >
               Save
             </button>
@@ -105,7 +114,8 @@ class EditProjectDefaultsForm extends React.Component {
 }
 
 const mapDispatchToProps = {
-  updateProject
+  updateProject,
+  loadProjectBillingAccount
 }
 
 export default protectComponent(
diff --git a/src/projects/detail/components/timeline/CreateMilestoneForm/CreateMilestoneForm.jsx b/src/projects/detail/components/timeline/CreateMilestoneForm/CreateMilestoneForm.jsx
index 7a609a8a0..c5e59db9e 100644
--- a/src/projects/detail/components/timeline/CreateMilestoneForm/CreateMilestoneForm.jsx
+++ b/src/projects/detail/components/timeline/CreateMilestoneForm/CreateMilestoneForm.jsx
@@ -34,13 +34,13 @@ class CreateMilestoneForm extends React.Component {
   cancelEdit() {
     const { previousMilestone } = this.props
     const startDate = previousMilestone ? moment.utc(previousMilestone.completionDate || previousMilestone.endDate) : moment.utc()
-    this.setState({
+    this.state = {
       isEditing: false,
       type: '',
       name: '',
       startDate: startDate.format('YYYY-MM-DD'),
       endDate: startDate.add(3, 'days').format('YYYY-MM-DD')
-    })
+    }
   }
 
   onAddClick() {
diff --git a/src/projects/detail/containers/ProjectDefaultsContainer.jsx b/src/projects/detail/containers/ProjectDefaultsContainer.jsx
index 450a22198..a23599514 100644
--- a/src/projects/detail/containers/ProjectDefaultsContainer.jsx
+++ b/src/projects/detail/containers/ProjectDefaultsContainer.jsx
@@ -18,6 +18,7 @@ class ProjectDefaultsContainer extends Component {
       isProcessing,
       feeds,
       isFeedsLoading,
+      isBillingAccountExpired,
       productsTimelines,
       phasesTopics,
       location,
@@ -54,7 +55,7 @@ class ProjectDefaultsContainer extends Component {
           </MediaQuery>
         </TwoColsLayout.Sidebar>
         <TwoColsLayout.Content>
-          <EditProjectDefaultsForm project={this.props.project} />
+          <EditProjectDefaultsForm project={this.props.project} isBillingAccountExpired={isBillingAccountExpired} />
         </TwoColsLayout.Content>
       </TwoColsLayout>
     )
@@ -68,6 +69,7 @@ const mapStateToProps = ({ loadUser, projectState, projectTopics, topics }) => {
 
   return {
     user: loadUser.user,
+    isBillingAccountExpired: projectState.isBillingAccountExpired,
     isProcessing: projectState.processing,
     phases: projectState.phases,
     phasesNonDirty: projectState.phasesNonDirty,
diff --git a/src/projects/detail/containers/ProjectInfoContainer.js b/src/projects/detail/containers/ProjectInfoContainer.js
index 1b81baefb..b9f89199a 100644
--- a/src/projects/detail/containers/ProjectInfoContainer.js
+++ b/src/projects/detail/containers/ProjectInfoContainer.js
@@ -83,6 +83,7 @@ class ProjectInfoContainer extends React.Component {
       !_.isEqual(nextProps.feeds, this.props.feeds) ||
       !_.isEqual(nextProps.phases, this.props.phases) ||
       !_.isEqual(nextProps.productsTimelines, this.props.productsTimelines) ||
+      !_.isEqual(nextProps.isBillingAccountExpired, this.props.isBillingAccountExpired) ||
       !_.isEqual(nextProps.phasesTopics, this.props.phasesTopics) ||
       !_.isEqual(nextProps.isFeedsLoading, this.props.isFeedsLoading) ||
       !_.isEqual(nextProps.isProjectProcessing, this.props.isProjectProcessing) ||
@@ -426,7 +427,7 @@ class ProjectInfoContainer extends React.Component {
   render() {
     const { showDeleteConfirm } = this.state
     const { project, phases, hideInfo, hideMembers,
-      productsTimelines, isProjectProcessing, notifications, projectTemplates } = this.props
+      productsTimelines, isProjectProcessing, notifications, projectTemplates, isBillingAccountExpired } = this.props
 
     const projectTemplateId = project.templateId
     const projectTemplateKey = _.get(project, 'details.products[0]')
@@ -457,7 +458,7 @@ class ProjectInfoContainer extends React.Component {
     const notReadAssetsNotifications = filterFileAndLinkChangedNotifications(projectNotReadNotifications)
 
     const renderFAQs = containsFAQ(projectTemplate)
-    const navLinks = getProjectNavLinks(project, project.id, renderFAQs).map((navLink) => {
+    const navLinks = getProjectNavLinks(project, project.id, renderFAQs, isBillingAccountExpired).map((navLink) => {
       if (navLink.label === 'Messages') {
         navLink.count = notReadMessageNotifications.length
         navLink.toolTipText = 'New messages'
@@ -593,10 +594,11 @@ ProjectInfoContainer.PropTypes = {
   canAccessPrivatePosts: PropTypes.bool.isRequired,
 }
 
-const mapStateToProps = ({ templates, notifications }) => {
+const mapStateToProps = ({ templates, projectState, notifications }) => {
   const canAccessPrivatePosts = hasPermission(PERMISSIONS.ACCESS_PRIVATE_POST)
   return ({
     projectTemplates : templates.projectTemplates,
+    isBillingAccountExpired: projectState.isBillingAccountExpired,
     canAccessPrivatePosts,
     notifications: notifications.notifications,
   })
diff --git a/src/projects/reducers/project.js b/src/projects/reducers/project.js
index 5ceb3a85d..a877ce308 100644
--- a/src/projects/reducers/project.js
+++ b/src/projects/reducers/project.js
@@ -1,6 +1,7 @@
 import {
   CREATE_PROJECT_PHASE_TIMELINE_MILESTONES_PENDING, CREATE_PROJECT_PHASE_TIMELINE_MILESTONES_SUCCESS, CREATE_PROJECT_PHASE_TIMELINE_MILESTONES_FAILURE,
   LOAD_PROJECT_PENDING, LOAD_PROJECT_SUCCESS, LOAD_PROJECT_MEMBER_INVITE_PENDING, LOAD_PROJECT_MEMBER_INVITE_SUCCESS, LOAD_PROJECT_FAILURE,
+  LOAD_PROJECT_BILLING_ACCOUNT_SUCCESS, LOAD_PROJECT_BILLING_ACCOUNT_FAILURE,
   CREATE_PROJECT_PENDING, CREATE_PROJECT_SUCCESS, CREATE_PROJECT_FAILURE, CLEAR_LOADED_PROJECT,
   UPDATE_PROJECT_PENDING, UPDATE_PROJECT_SUCCESS, UPDATE_PROJECT_FAILURE,
   DELETE_PROJECT_PENDING, DELETE_PROJECT_SUCCESS, DELETE_PROJECT_FAILURE,
@@ -36,6 +37,7 @@ export function getEmptyProjectObject() {
 
 const initialState = {
   isLoading: true,
+  isBillingAccountExpired: false,
   processing: false,
   processingMembers: false,
   updatingMemberIds: [],
@@ -151,6 +153,16 @@ export const projectState = function (state=initialState, action) {
     return Object.assign({}, state, {
       isCreatingPhase: true
     })
+  case LOAD_PROJECT_BILLING_ACCOUNT_SUCCESS:
+    return {
+      ...state,
+      isBillingAccountExpired: !action.payload.data.active,
+    }
+  case LOAD_PROJECT_BILLING_ACCOUNT_FAILURE:
+    return {
+      ...state,
+      isBillingAccountExpired: false,
+    }
   case CREATE_PROJECT_PHASE_TIMELINE_MILESTONES_SUCCESS:
   case CREATE_PROJECT_PHASE_SUCCESS: {
     const { phase, product } = action.payload
diff --git a/src/reducers/alerts.js b/src/reducers/alerts.js
index 9ed828d00..dbbca6a6f 100644
--- a/src/reducers/alerts.js
+++ b/src/reducers/alerts.js
@@ -2,6 +2,8 @@ import _ from 'lodash'
 import Alert from 'react-s-alert'
 /* eslint-disable no-unused-vars */
 import {
+  // billing account
+  LOAD_PROJECT_BILLING_ACCOUNT_SUCCESS,
   // bulk phase and milestones
   CREATE_PROJECT_PHASE_TIMELINE_MILESTONES_SUCCESS,
   // Project
@@ -168,6 +170,11 @@ export default function(state = {}, action) {
   case CANCEL_SCOPE_CHANGE_FAILURE:
     Alert.error('Unable to Cancel the Scope Change')
     return state
+  case LOAD_PROJECT_BILLING_ACCOUNT_SUCCESS:
+    if (!action.payload.data.active) {
+      Alert.error('The billing account of this project is expired, please update it.')
+    }
+    return state
 
   case ACTIVATE_SCOPE_CHANGE_SUCCESS:
     Alert.success('Activated the Scope Change successfully')