diff --git a/README.md b/README.md
index c195011..db6c3ce 100644
--- a/README.md
+++ b/README.md
@@ -367,6 +367,7 @@ Methods are provided within `client.promotions.*` namespace.
 - [Create Promotion Campaign](#create-promotion-campaign)
 - [Validate Promotion Campaign](#validate-promotion-campaign)
 - [List Promotion's Tiers](#list-promotions-tiers)
+- [List All Promotion Tiers](#doc-list-all-promotion-tiers)
 - [Create Promotion's Tier](#create-promotions-tier)
 - [Redeem Promotion's Tier](#redeem-promotions-tier)
 - [Update Promotion's Tier](#update-promotions-tier)
@@ -386,6 +387,14 @@ client.promotions.validate(validationContext)
 client.promotions.tiers.list(promotionCampaignId)
 ```
 Check [promotion's tier object](http://docs.voucherify.io/reference?utm_source=github&utm_medium=sdk&utm_campaign=acq#the-promotion-object)
+#### [List All Promotion Tiers]
+```javascript
+client.promotions.tiers.listAll()
+client.promotions.tiers.listAll({ is_available: true })
+client.promotions.tiers.listAll({ page: 2, limit: 10 })
+```
+You can list all currently available promotions by specifying `is_available` flag.
+
 #### [Create Promotion's Tier]
 ```javascript
 client.promotions.tiers.create(promotionId, promotionsTier)
@@ -1122,6 +1131,7 @@ Bug reports and pull requests are welcome through [GitHub Issues](https://github
 [Create Promotion Campaign]: http://docs.voucherify.io/reference?utm_source=github&utm_medium=sdk&utm_campaign=acq#create-promotion-campaign
 [Validate Promotion Campaign]: http://docs.voucherify.io/reference?utm_source=github&utm_medium=sdk&utm_campaign=acq#validate-promotions-1
 [List Promotion's Tiers]: http://docs.voucherify.io/reference?utm_source=github&utm_medium=sdk&utm_campaign=acq#get-promotions
+[Doc List All Promotion Tiers]: http://docs.voucherify.io/reference?utm_source=github&utm_medium=sdk&utm_campaign=acq#list-promotion-tiers
 [Create Promotion's Tier]: http://docs.voucherify.io/reference?utm_source=github&utm_medium=sdk&utm_campaign=acq#add-promotion-tier-to-campaign
 [Redeem Promotion's Tier]: http://docs.voucherify.io/reference?utm_source=github&utm_medium=sdk&utm_campaign=acq#redeem-promotion
 [Update Promotion's Tier]: http://docs.voucherify.io/reference?utm_source=github&utm_medium=sdk&utm_campaign=acq#update-promotion
diff --git a/src/PromotionTiers.js b/src/PromotionTiers.js
index 3282453..351af2f 100644
--- a/src/PromotionTiers.js
+++ b/src/PromotionTiers.js
@@ -7,6 +7,10 @@ module.exports = class PromotionTiers {
     this.client = client
   }
 
+  listAll (params = {}, callback) {
+    return this.client.get('/promotions/tiers', params, callback)
+  }
+
   list (promotionId, callback) {
     return this.client.get(`/promotions/${encode(promotionId)}/tiers`, null, callback)
   }
diff --git a/test/promotions-api.spec.js b/test/promotions-api.spec.js
index e466e19..f282278 100644
--- a/test/promotions-api.spec.js
+++ b/test/promotions-api.spec.js
@@ -52,6 +52,31 @@ describe('Promotions API', function () {
   })
 
   describe('promotion tiers', function () {
+    describe('all tiers', function () {
+      it('should list all promotion tiers in specific page', function (done) {
+        var server = nock('https://api.voucherify.io', reqWithoutBody)
+          .get('/v1/promotions/tiers?limit=10&page=2')
+          .reply(200, {})
+
+        client.promotions.tiers.listAll({ limit: 10, page: 2 })
+          .then(function () {
+            server.done()
+            done()
+          })
+      })
+      it('should list all available promotion tiers', function (done) {
+        var server = nock('https://api.voucherify.io', reqWithoutBody)
+          .get('/v1/promotions/tiers?is_available=true')
+          .reply(200, {})
+
+        client.promotions.tiers.listAll({ is_available: true })
+          .then(function () {
+            server.done()
+            done()
+          })
+      })
+    })
+
     it('should list promotion tiers', function (done) {
       var server = nock('https://api.voucherify.io', reqWithoutBody)
         .get('/v1/promotions/promo_test_id/tiers')