diff --git a/ghost/core/core/server/api/endpoints/utils/serializers/input/tiers.js b/ghost/core/core/server/api/endpoints/utils/serializers/input/tiers.js
index 2572829ff1..8fee3393ce 100644
--- a/ghost/core/core/server/api/endpoints/utils/serializers/input/tiers.js
+++ b/ghost/core/core/server/api/endpoints/utils/serializers/input/tiers.js
@@ -1,4 +1,5 @@
 const localUtils = require('../../index');
+const labs = require('../../../../../../shared/labs');
 
 const forceActiveFilter = (frame) => {
     if (frame.options.filter) {
@@ -22,6 +23,10 @@ function convertTierInput(input) {
         visibility: input.visibility
     };
 
+    if (labs.isSet('freeTrial')) {
+        converted.trial_days = input.trial_days;
+    }
+
     if (input.monthly_price && input.currency) {
         converted.monthly_price = {
             amount: input.monthly_price,
diff --git a/ghost/core/core/server/api/endpoints/utils/serializers/output/tiers.js b/ghost/core/core/server/api/endpoints/utils/serializers/output/tiers.js
index 076d1ac362..182a946d29 100644
--- a/ghost/core/core/server/api/endpoints/utils/serializers/output/tiers.js
+++ b/ghost/core/core/server/api/endpoints/utils/serializers/output/tiers.js
@@ -4,6 +4,7 @@ const debug = require('@tryghost/debug')('api:endpoints:utils:serializers:output
 const allowedIncludes = ['monthly_price', 'yearly_price'];
 const localUtils = require('../../index');
 const utils = require('../../../../shared/utils');
+const labs = require('../../../../../../shared/labs');
 
 module.exports = {
     browse: createSerializer('browse', paginatedTiers),
@@ -69,6 +70,10 @@ function serializeTier(tier, options, frame) {
         benefits: null
     };
 
+    if (labs.isSet('freeTrial')) {
+        serialized.trial_days = json.trial_days;
+    }
+
     if (Array.isArray(json.benefits)) {
         serialized.benefits = json.benefits.map(benefit => benefit.name);
     } else {
diff --git a/ghost/core/test/e2e-api/admin/__snapshots__/tiers.test.js.snap b/ghost/core/test/e2e-api/admin/__snapshots__/tiers.test.js.snap
index c30686cb8d..77b3ff8db5 100644
--- a/ghost/core/test/e2e-api/admin/__snapshots__/tiers.test.js.snap
+++ b/ghost/core/test/e2e-api/admin/__snapshots__/tiers.test.js.snap
@@ -21,6 +21,7 @@ Object {
       "id": StringMatching /\\[a-f0-9\\]\\{24\\}/,
       "name": "Free",
       "slug": "free",
+      "trial_days": 0,
       "type": "free",
       "updated_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
       "visibility": "public",
@@ -34,6 +35,7 @@ Object {
       "id": StringMatching /\\[a-f0-9\\]\\{24\\}/,
       "name": "Default Product",
       "slug": "default-product",
+      "trial_days": 0,
       "type": "paid",
       "updated_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
       "visibility": "public",
diff --git a/ghost/core/test/e2e-api/content/__snapshots__/tiers.test.js.snap b/ghost/core/test/e2e-api/content/__snapshots__/tiers.test.js.snap
index 4bc3d7caff..a999968eef 100644
--- a/ghost/core/test/e2e-api/content/__snapshots__/tiers.test.js.snap
+++ b/ghost/core/test/e2e-api/content/__snapshots__/tiers.test.js.snap
@@ -21,6 +21,7 @@ Object {
       "id": StringMatching /\\[a-f0-9\\]\\{24\\}/,
       "name": "Free",
       "slug": "free",
+      "trial_days": 0,
       "type": "free",
       "updated_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}/,
       "visibility": "public",
@@ -36,6 +37,7 @@ Object {
       "monthly_price": 1200,
       "name": "Default Product",
       "slug": "default-product",
+      "trial_days": 0,
       "type": "paid",
       "updated_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}/,
       "visibility": "public",
@@ -50,7 +52,7 @@ exports[`Tiers Content API Can request only active tiers 2: [headers] 1`] = `
 Object {
   "access-control-allow-origin": "*",
   "cache-control": "no-cache, private, no-store, must-revalidate, max-stale=0, post-check=0, pre-check=0",
-  "content-length": "700",
+  "content-length": "730",
   "content-type": "application/json; charset=utf-8",
   "etag": StringMatching /\\(\\?:W\\\\/\\)\\?"\\(\\?:\\[ !#-\\\\x7E\\\\x80-\\\\xFF\\]\\*\\|\\\\r\\\\n\\[\\\\t \\]\\|\\\\\\\\\\.\\)\\*"/,
   "vary": "Accept-Encoding",