diff --git a/Libraries/SPTarkov.Server.Core/Controllers/RagfairController.cs b/Libraries/SPTarkov.Server.Core/Controllers/RagfairController.cs
index 5164ec5f..16be64cb 100644
--- a/Libraries/SPTarkov.Server.Core/Controllers/RagfairController.cs
+++ b/Libraries/SPTarkov.Server.Core/Controllers/RagfairController.cs
@@ -1116,7 +1116,7 @@ public class RagfairController(
     /// <param name="offerId">Id of offer to remove</param>
     /// <param name="sessionId">Session id of requesting player</param>
     /// <returns>ItemEventRouterResponse</returns>
-    public ItemEventRouterResponse FlagOfferForRemoval(string offerId, MongoId sessionId)
+    public ItemEventRouterResponse FlagOfferForRemoval(MongoId offerId, MongoId sessionId)
     {
         var output = eventOutputHolder.GetOutput(sessionId);
 
diff --git a/Libraries/SPTarkov.Server.Core/Helpers/RagfairOfferHelper.cs b/Libraries/SPTarkov.Server.Core/Helpers/RagfairOfferHelper.cs
index 6ce1798a..06cabbd8 100644
--- a/Libraries/SPTarkov.Server.Core/Helpers/RagfairOfferHelper.cs
+++ b/Libraries/SPTarkov.Server.Core/Helpers/RagfairOfferHelper.cs
@@ -759,7 +759,7 @@ public class RagfairOfferHelper(
      * @param sessionId Session id of profile to delete offer from
      * @param offerId Id of offer to delete
      */
-    protected void DeleteOfferById(MongoId sessionId, string offerId)
+    protected void DeleteOfferById(MongoId sessionId, MongoId offerId)
     {
         var profileRagfairInfo = profileHelper.GetPmcProfile(sessionId).RagfairInfo;
         var offerIndex = profileRagfairInfo.Offers.FindIndex(o => o.Id == offerId);
diff --git a/Libraries/SPTarkov.Server.Core/Servers/RagfairServer.cs b/Libraries/SPTarkov.Server.Core/Servers/RagfairServer.cs
index e061a913..f909dd33 100644
--- a/Libraries/SPTarkov.Server.Core/Servers/RagfairServer.cs
+++ b/Libraries/SPTarkov.Server.Core/Servers/RagfairServer.cs
@@ -99,7 +99,7 @@ public class RagfairServer(
     ///     Disable/Hide an offer from flea
     /// </summary>
     /// <param name="offerId"> OfferID to hide </param>
-    public void HideOffer(string offerId)
+    public void HideOffer(MongoId offerId)
     {
         var offers = _ragfairOfferService.GetOffers();
         var offer = offers.FirstOrDefault(x => x.Id == offerId);
@@ -119,7 +119,7 @@ public class RagfairServer(
         offer.Locked = true;
     }
 
-    public RagfairOffer? GetOffer(string offerId)
+    public RagfairOffer? GetOffer(MongoId offerId)
     {
         return _ragfairOfferService.GetOfferByOfferId(offerId);
     }
diff --git a/Libraries/SPTarkov.Server.Core/Services/RagfairTaxService.cs b/Libraries/SPTarkov.Server.Core/Services/RagfairTaxService.cs
index aafa27b1..b34e83da 100644
--- a/Libraries/SPTarkov.Server.Core/Services/RagfairTaxService.cs
+++ b/Libraries/SPTarkov.Server.Core/Services/RagfairTaxService.cs
@@ -22,7 +22,7 @@ public class RagfairTaxService(
 )
 {
     protected readonly Dictionary<
-        string,
+        MongoId,
         StorePlayerOfferTaxAmountRequestData
     > _playerOfferTaxCache = new();
 
@@ -31,16 +31,16 @@ public class RagfairTaxService(
         StorePlayerOfferTaxAmountRequestData offer
     )
     {
-        _playerOfferTaxCache[offer.Id] = offer;
+        _playerOfferTaxCache[offer.Id.Value] = offer;
     }
 
-    public void ClearStoredOfferTaxById(string offerIdToRemove)
+    public void ClearStoredOfferTaxById(MongoId offerIdToRemove)
     {
         _playerOfferTaxCache.Remove(offerIdToRemove);
     }
 
     public StorePlayerOfferTaxAmountRequestData GetStoredClientOfferTaxValueById(
-        string offerIdToGet
+        MongoId offerIdToGet
     )
     {
         return _playerOfferTaxCache[offerIdToGet];