diff --git a/services/registration/src/routes/grading.ts b/services/registration/src/routes/grading.ts
index ad0c376..cfee322 100644
--- a/services/registration/src/routes/grading.ts
+++ b/services/registration/src/routes/grading.ts
@@ -6,6 +6,7 @@ import { Types } from "mongoose";
 import _ from "lodash";
 
 import { ApplicationModel, Essay, StatusType } from "../models/application";
+import { ReferralModel, ReferralStatusType } from "../models/referral";
 import { GraderModel } from "../models/grader";
 import { Review, ReviewModel } from "../models/review";
 import { BranchModel, BranchType, GradingGroupType } from "../models/branch";
@@ -15,6 +16,21 @@ import { getCalibrationMapping } from "../common/adjustScores";
 const MAX_REVIEWS_PER_ESSAY = 2;
 // NOTE: No. of essays for each application. As such, will need to be updated whenever we add/remove essays.
 const ESSAY_COUNT = 4;
+const REFERRAL_BONUS = 2;
+
+async function checkForReferralBonus(email?: string, hexathon?: Types.ObjectId) {
+  if (!email || !hexathon) {
+    return 0;
+  }
+
+  const referral = await ReferralModel.exists({
+    hexathon,
+    "status": ReferralStatusType.SUBMITTED,
+    "referralData.email": new RegExp(`^${_.escapeRegExp(email.trim())}$`, "i"),
+  });
+
+  return referral ? REFERRAL_BONUS : 0;
+}
 
 type AggregatedEssay = {
   applicationId: string;
@@ -304,7 +320,9 @@ gradingRouter.route("/actions/submit-review").post(
       if (allEssayReviews.length >= MAX_REVIEWS_PER_ESSAY * ESSAY_COUNT) {
         application.gradingComplete = true;
         const sumScores = allEssayReviews.reduce((prev, review) => prev + review.adjustedScore, 0);
-        application.finalScore = sumScores / allEssayReviews.length;
+        const baseScore = sumScores / allEssayReviews.length;
+        const referralBonus = await checkForReferralBonus(application);
+        application.finalScore = baseScore + referralBonus;
         await application.save();
       }