diff --git a/src/endpoints/subscription-invoices.js b/src/endpoints/subscription-invoices.js
new file mode 100644
index 0000000..045fe99
--- /dev/null
+++ b/src/endpoints/subscription-invoices.js
@@ -0,0 +1,59 @@
+import RequestFactory from '../factories/request'
+import { buildURL } from '../utils/helpers'
+
+class SubscriptionInvoicesEndpoint {
+  constructor(endpoint) {
+    const config = { ...endpoint }
+    this.request = new RequestFactory(config)
+
+    this.endpoint = 'subscriptions/invoices'
+  }
+
+  All() {
+    const { filter, limit, offset } = this
+
+    return this.request.send(
+      buildURL(this.endpoint, {
+        filter,
+        limit,
+        offset
+      }),
+      'GET'
+    )
+  }
+
+  Get(id) {
+    return this.request.send(`${this.endpoint}/${id}`, 'GET')
+  }
+
+  GetPayments(invoiceId) {
+    return this.request.send(`${this.endpoint}/${invoiceId}/payments`, 'GET')
+  }
+
+  GetPayment(invoiceId, paymentId) {
+    return this.request.send(
+      `${this.endpoint}/${invoiceId}/payments/${paymentId}`,
+      'GET'
+    )
+  }
+
+  Filter(filter) {
+    this.filter = filter
+
+    return this
+  }
+
+  Limit(value) {
+    this.limit = value
+
+    return this
+  }
+
+  Offset(value) {
+    this.offset = value
+
+    return this
+  }
+}
+
+export default SubscriptionInvoicesEndpoint
diff --git a/src/index.d.ts b/src/index.d.ts
index e37ba6b..37f4b8d 100644
--- a/src/index.d.ts
+++ b/src/index.d.ts
@@ -67,6 +67,7 @@ import { SubscriptionSchedulesEndpoint } from './types/subscription-schedules'
 import { CustomApisEndpoint } from './types/custom-apis'
 import { SubscriptionDunningRulesEndpoint } from './types/subscription-dunning-rules'
 import { SubscriptionProrationPoliciesEndpoint } from './types/subscription-proration-policies'
+import { SubscriptionInvoicesEndpoint } from './types/subscription-invoices'
 
 export * from './types/config'
 export * from './types/storage'
@@ -144,6 +145,7 @@ export * from './types/subscription-schedules'
 export * from './types/custom-apis'
 export * from './types/subscription-dunning-rules'
 export * from './types/subscription-proration-policies'
+export * from './types/subscription-invoices'
 
 // UMD
 export as namespace elasticpath
@@ -205,13 +207,14 @@ export class ElasticPath {
   SubscriptionOfferings: SubscriptionOfferingsEndpoint
   OneTimePasswordTokenRequest: OneTimePasswordTokenRequestEndpoint
   Subscriptions: SubscriptionsEndpoint
-  RulePromotions : RulePromotionsEndpoint
-  SubscriptionSubscribers : SubscriptionSubscribersEndpoint
-  SubscriptionJobs : SubscriptionJobsEndpoint
+  RulePromotions: RulePromotionsEndpoint
+  SubscriptionSubscribers: SubscriptionSubscribersEndpoint
+  SubscriptionJobs: SubscriptionJobsEndpoint
   SubscriptionSchedules: SubscriptionSchedulesEndpoint
   CustomApis: CustomApisEndpoint
   SubscriptionDunningRules: SubscriptionDunningRulesEndpoint
   SubscriptionProrationPolicies: SubscriptionProrationPoliciesEndpoint
+  SubscriptionInvoices: SubscriptionInvoicesEndpoint
 
   Cart(id?: string): CartEndpoint // This optional cart id is super worrying when using the SDK in a node server :/
   constructor(config: Config)
diff --git a/src/index.js b/src/index.js
index 76ed62c..4bb33c2 100644
--- a/src/index.js
+++ b/src/index.js
@@ -54,10 +54,11 @@ import SubscriptionOfferingsEndpoint from './endpoints/subscription-offerings'
 import SubscriptionsEndpoint from './endpoints/subscriptions'
 import RulePromotionsEndpoint from './endpoints/rule-promotions'
 import SubscriptionSubscribersEndpoint from './endpoints/subscription-subscribers'
-import SubscriptionJobsEndpoint  from './endpoints/subscription-jobs'
+import SubscriptionJobsEndpoint from './endpoints/subscription-jobs'
 import SubscriptionSchedulesEndpoint from './endpoints/subscription-schedules'
 import SubscriptionDunningRulesEndpoint from './endpoints/subscription-dunning-rules'
 import SubscriptionProrationPoliciesEndpoint from './endpoints/subscription-proration-policies'
+import SubscriptionInvoicesEndpoint from './endpoints/subscription-invoices'
 
 import {
   cartIdentifier,
@@ -144,7 +145,9 @@ export default class ElasticPath {
     this.SubscriptionSchedules = new SubscriptionSchedulesEndpoint(config)
     this.CustomApis = new CustomApisEndpoint(config)
     this.SubscriptionDunningRules = new SubscriptionDunningRulesEndpoint(config)
-    this.SubscriptionProrationPolicies = new SubscriptionProrationPoliciesEndpoint(config)
+    this.SubscriptionProrationPolicies =
+      new SubscriptionProrationPoliciesEndpoint(config)
+    this.SubscriptionInvoices = new SubscriptionInvoicesEndpoint(config)
   }
 
   // Expose `Cart` class on ElasticPath class
diff --git a/src/types/subscription-invoices.d.ts b/src/types/subscription-invoices.d.ts
new file mode 100644
index 0000000..71a33d2
--- /dev/null
+++ b/src/types/subscription-invoices.d.ts
@@ -0,0 +1,178 @@
+/**
+ * Subscription Invoices
+ * Description: Invoices represent the amount a customer owes for a subscription.
+ * Elastic Path Subscriptions generates an invoice for every period in a subscription billing cycle.
+ * DOCS: https://elasticpath.dev/docs/api/subscriptions/invoices
+ */
+import {
+  Identifiable,
+  CrudQueryableResource,
+  Resource,
+  ResourceList,
+  ResourcePage
+} from './core'
+import { ItemTaxObject } from './cart'
+import { Price } from './price'
+
+interface SubscriptionInvoiceItemPrice extends Omit<Price, 'includes_tax'> {
+  includes_tax?: boolean
+}
+
+interface SubscriptionInvoiceItem {
+  description: string
+  price: SubscriptionInvoiceItemPrice
+  product_id?: string
+  from_time_period?: string
+  until_time_period?: string
+}
+
+/**
+ * Core Subscription Invoice Base Interface
+ * For custom flows, extend this interface
+ * DOCS: https://elasticpath.dev/docs/api/subscriptions/get-invoice#responses
+ */
+
+export interface SubscriptionInvoiceBase {
+  type: 'subscription_invoice'
+  attributes: {
+    billing_period: {
+      start: string
+      end: string
+    }
+    invoice_items: SubscriptionInvoiceItem[]
+    tax_items?: ItemTaxObject[]
+    outstanding: boolean
+    number?: number
+    tax_required: boolean
+    payment_retries_limit_reached: boolean
+    updated_at?: string
+    created_at?: string
+  }
+}
+
+interface ProrationEvent {
+  proration_policy_id: string
+  billing_cost_before_proration: number
+  refunded_amount_for_unused_plan: number
+  new_plan_cost: number
+  prorated_at: string
+}
+
+export interface SubscriptionInvoice
+  extends Identifiable,
+    SubscriptionInvoiceBase {
+  meta: {
+    owner: 'store' | 'organization'
+    subscription_id?: string
+    subscriber_id?: string
+    price?: SubscriptionInvoiceItemPrice
+    timestamps: {
+      updated_at: string
+      created_at: string
+      taxes_added_at?: string
+    }
+    prorated_at: ProrationEvent[]
+  }
+}
+
+/**
+ * Core Subscription Invoice Payments Base Interface
+ * DOCS: https://elasticpath.dev/docs/api/subscriptions/get-invoice-payment#responses
+ */
+
+export interface SubscriptionInvoicePaymentBase {
+  type: 'subscription_invoice_payment'
+  attributes: {
+    success: boolean
+    gateway: string
+    external_payment_id?: string
+    failure_detail?: {
+      reason?: string
+    }
+    amount: SubscriptionInvoiceItemPrice
+  }
+}
+
+export interface SubscriptionInvoicePayment
+  extends Identifiable,
+    SubscriptionInvoicePaymentBase {
+  meta: {
+    owner: 'store' | 'organization'
+    subscription_id: string
+    invoice_id: string
+    job_id: string
+    timestamps: {
+      updated_at: string
+      created_at: string
+      payment_taken_at?: string
+    }
+  }
+}
+
+/**
+ * Subscription Invoice Filtering
+ * DOCS: https://elasticpath.dev/docs/api/subscriptions/list-invoices#filtering
+ */
+export interface SubscriptionInvoiceFilter {
+  eq?: {
+    subscriber_id?: string
+    subscription_id?: string
+    outstanding?: string
+    tax_required?: string
+  }
+}
+
+/**
+ * Subscription Invoice Endpoints
+ * DOCS: https://elasticpath.dev/docs/api/subscriptions/list-invoices
+ */
+export interface SubscriptionInvoicesEndpoint {
+  endpoint: 'invoices'
+
+  /**
+   * List Invoices
+   * DOCS: https://elasticpath.dev/docs/api/subscriptions/list-invoices
+   * @constructor
+   */
+  All(): Promise<ResourcePage<SubscriptionInvoice>>
+
+  /**
+   * Get Invoice
+   * DOCS: https://elasticpath.dev/docs/api/subscriptions/get-invoice
+   * @param id - The ID of the invoice.
+   * @constructor
+   */
+  Get(id: string): Promise<Resource<SubscriptionInvoice>>
+
+  /**
+   * List Invoice Payments
+   * DOCS: https://elasticpath.dev/docs/api/subscriptions/list-invoice-payments
+   * @param invoiceId - The ID of the invoice to get the payments for.
+   * @constructor
+   */
+  GetPayments(
+    invoiceId: string
+  ): Promise<ResourceList<SubscriptionInvoicePayment>>
+
+  /**
+   * Get Invoice Payment
+   * DOCS: https://elasticpath.dev/docs/api/subscriptions/get-invoice-payment
+   * @param invoiceId - The ID of the invoice to get the payment for.
+   * @param paymentId - The ID of the payment.
+   * @constructor
+   */
+  GetPayment(
+    invoiceId: string,
+    paymentId: string
+  ): Promise<Resource<SubscriptionInvoicePayment>>
+
+  /**
+   * Subscription Invoice Filtering
+   * DOCS: https://elasticpath.dev/docs/api/subscriptions/list-invoices#filtering
+   */
+  Filter(filter: SubscriptionInvoiceFilter): SubscriptionInvoicesEndpoint
+
+  Limit(value: number): SubscriptionInvoicesEndpoint
+
+  Offset(value: number): SubscriptionInvoicesEndpoint
+}
diff --git a/src/types/subscriptions.d.ts b/src/types/subscriptions.d.ts
index 9e3c09c..6f92366 100644
--- a/src/types/subscriptions.d.ts
+++ b/src/types/subscriptions.d.ts
@@ -9,7 +9,11 @@ import {
   Resource,
   ResourcePage
 } from './core'
-import { SubscriptionOfferingPlan, SubscriptionOfferingProduct } from './subscription-offerings'
+import {
+  SubscriptionOfferingPlan,
+  SubscriptionOfferingProduct
+} from './subscription-offerings'
+import { SubscriptionInvoice } from './subscription-invoices'
 
 /**
  * Core Subscription Base Interface
@@ -17,13 +21,13 @@ import { SubscriptionOfferingPlan, SubscriptionOfferingProduct } from './subscri
  * DOCS: TODO: add docs when ready
  */
 export interface SubscriptionBase {
-  type: "subscription"
+  type: 'subscription'
   attributes: {
     external_ref?: string
     account_id: string
     offering: {
       id: string
-      type: "subscription_offering"
+      type: 'subscription_offering'
       attributes: {
         external_ref?: string
         name: string
@@ -44,10 +48,10 @@ export interface SubscriptionBase {
 }
 
 export interface SubscriptionCreate {
-  account_id: string,
-  offering_id: string,
-  plan_id: string,
-  currency: string,
+  account_id: string
+  offering_id: string
+  plan_id: string
+  currency: string
   meta?: {
     owner?: string
   }
@@ -60,43 +64,12 @@ export interface SubscriptionUpdate extends Identifiable {
   }
 }
 
-export interface SubscriptionInvoice extends Identifiable {
-  type: "subscription-invoice",
-  attributes: {
-    billing_period: {
-      start: string,
-      end: string
-    },
-    invoice_items:       {
-      description: string,
-      price: {
-        currency: string,
-        amount: number,
-        includes_tax: boolean
-      }
-    }[],
-    outstanding: boolean,
-    updated_at: string,
-    created_at: string
-  },
-  meta: {
-    owner: string,
-    subscription_id: string,
-    price: {
-      currency: string,
-      amount: number,
-      includes_tax: boolean
-    }
-  }
-}
-
 export interface SubscriptionFilter {
   eq?: {
     account_id?: string
   }
 }
 
-
 export interface Subscription extends Identifiable, SubscriptionBase {
   relationships: {
     subscriber: {
@@ -122,7 +95,7 @@ export interface Subscription extends Identifiable, SubscriptionBase {
 
 export type SubscriptionsInclude = 'plans'
 
-export type SubscriptionsStateAction = 'cancel'| 'pause'| 'resume'
+export type SubscriptionsStateAction = 'cancel' | 'pause' | 'resume'
 
 export interface SubscriptionsIncluded {
   plans: SubscriptionOfferingPlan[]
@@ -133,23 +106,30 @@ export interface SubscriptionsIncluded {
  * DOCS: TODO: add docs when ready
  */
 export interface SubscriptionsEndpoint
-  extends Omit<CrudQueryableResource<
-    Subscription,
-    SubscriptionCreate,
-    SubscriptionUpdate,
-    SubscriptionFilter,
-    never,
-    SubscriptionsInclude
-    >, "All" | "Attributes" | "Link" > {
+  extends Omit<
+    CrudQueryableResource<
+      Subscription,
+      SubscriptionCreate,
+      SubscriptionUpdate,
+      SubscriptionFilter,
+      never,
+      SubscriptionsInclude
+    >,
+    'All' | 'Attributes' | 'Link'
+  > {
   endpoint: 'subscriptions'
 
-  All(token?: string): Promise<ResourcePage<Subscription, SubscriptionsIncluded>>
+  All(
+    token?: string
+  ): Promise<ResourcePage<Subscription, SubscriptionsIncluded>>
 
   GetInvoices(id: string): Promise<Resource<SubscriptionInvoice[]>>
 
-  GetAttachedProducts(id: string) : Promise<Resource<SubscriptionOfferingProduct[]>>
+  GetAttachedProducts(
+    id: string
+  ): Promise<Resource<SubscriptionOfferingProduct[]>>
 
-  GetAttachedPlans(id: string) : Promise<Resource<SubscriptionOfferingPlan[]>>
+  GetAttachedPlans(id: string): Promise<Resource<SubscriptionOfferingPlan[]>>
 
-  CreateState(id: string, action: SubscriptionsStateAction) : Promise<void>
+  CreateState(id: string, action: SubscriptionsStateAction): Promise<void>
 }