diff --git a/distribution/changelog.txt b/distribution/changelog.txt
index 6083d24768..c2e3bf099e 100644
--- a/distribution/changelog.txt
+++ b/distribution/changelog.txt
@@ -31,6 +31,7 @@
 - Change: [#17655] Lower default price for the Crooked House.
 - Change: [#17745] Make maintenance cost of Mini-Golf more balanced.
 - Change: [#17762] Use vertical tabs in the New Game dialog.
+- Change: [#18113] Increased limit of Loan Interest in Scenario Editor to 255%.
 - Fix: [#5141] Headless server is counted as a player.
 - Fix: [#7466] Coaster track not drawn at tunnel exit.
 - Fix: [#10535] Guests getting stuck at specific level crossings.
diff --git a/src/openrct2-ui/windows/EditorScenarioOptions.cpp b/src/openrct2-ui/windows/EditorScenarioOptions.cpp
index c1357610a2..b923be431b 100644
--- a/src/openrct2-ui/windows/EditorScenarioOptions.cpp
+++ b/src/openrct2-ui/windows/EditorScenarioOptions.cpp
@@ -508,7 +508,7 @@ private:
                 Invalidate();
                 break;
             case WIDX_INTEREST_RATE_INCREASE:
-                if (gBankLoanInterestRate < 80)
+                if (gBankLoanInterestRate < MaxBankLoanInterestRate)
                 {
                     auto scenarioSetSetting = ScenarioSetSettingAction(
                         ScenarioSetSetting::AnnualInterestRate, gBankLoanInterestRate + 1);
@@ -523,7 +523,7 @@ private:
             case WIDX_INTEREST_RATE_DECREASE:
                 if (gBankLoanInterestRate > 0)
                 {
-                    auto interest = std::min(80, gBankLoanInterestRate - 1);
+                    auto interest = std::min<uint8_t>(MaxBankLoanInterestRate, gBankLoanInterestRate - 1);
                     auto scenarioSetSetting = ScenarioSetSettingAction(ScenarioSetSetting::AnnualInterestRate, interest);
                     GameActions::Execute(&scenarioSetSetting);
                 }
diff --git a/src/openrct2/Editor.cpp b/src/openrct2/Editor.cpp
index 7026e3c10f..a518f2cf98 100644
--- a/src/openrct2/Editor.cpp
+++ b/src/openrct2/Editor.cpp
@@ -30,6 +30,7 @@
 #include "interface/Window_internal.h"
 #include "localisation/Localisation.h"
 #include "localisation/LocalisationService.h"
+#include "management/Finance.h"
 #include "management/NewsItem.h"
 #include "object/DefaultObjects.h"
 #include "object/ObjectManager.h"
@@ -377,7 +378,7 @@ namespace Editor
 
             gMaxBankLoan = std::clamp<money64>(gMaxBankLoan, 0.00_GBP, 5000000.00_GBP);
 
-            gBankLoanInterestRate = std::clamp<uint8_t>(gBankLoanInterestRate, 5, 80);
+            gBankLoanInterestRate = std::clamp<uint8_t>(gBankLoanInterestRate, 5, MaxBankLoanInterestRate);
         }
 
         climate_reset(gClimate);
diff --git a/src/openrct2/actions/ScenarioSetSettingAction.cpp b/src/openrct2/actions/ScenarioSetSettingAction.cpp
index 02202b1d65..a44d2affd0 100644
--- a/src/openrct2/actions/ScenarioSetSettingAction.cpp
+++ b/src/openrct2/actions/ScenarioSetSettingAction.cpp
@@ -89,7 +89,7 @@ GameActions::Result ScenarioSetSettingAction::Execute() const
             window_invalidate_by_class(WindowClass::Finances);
             break;
         case ScenarioSetSetting::AnnualInterestRate:
-            gBankLoanInterestRate = std::clamp<uint8_t>(_value, 0, 80);
+            gBankLoanInterestRate = std::clamp<uint8_t>(_value, 0, MaxBankLoanInterestRate);
             window_invalidate_by_class(WindowClass::Finances);
             break;
         case ScenarioSetSetting::ForbidMarketingCampaigns:
diff --git a/src/openrct2/management/Finance.h b/src/openrct2/management/Finance.h
index 99a0a5f7b0..61f3a1a0ac 100644
--- a/src/openrct2/management/Finance.h
+++ b/src/openrct2/management/Finance.h
@@ -34,6 +34,8 @@ enum class ExpenditureType : int32_t
 #define EXPENDITURE_TABLE_MONTH_COUNT 16
 #define FINANCE_GRAPH_SIZE 128
 
+constexpr const uint8_t MaxBankLoanInterestRate = 255;
+
 extern const money32 research_cost_table[RESEARCH_FUNDING_COUNT];
 
 extern money64 gInitialCash;
diff --git a/src/openrct2/network/NetworkBase.cpp b/src/openrct2/network/NetworkBase.cpp
index 81bcf0bc56..00c4afb846 100644
--- a/src/openrct2/network/NetworkBase.cpp
+++ b/src/openrct2/network/NetworkBase.cpp
@@ -42,7 +42,7 @@
 // This string specifies which version of network stream current build uses.
 // It is used for making sure only compatible builds get connected, even within
 // single OpenRCT2 version.
-#define NETWORK_STREAM_VERSION "19"
+#define NETWORK_STREAM_VERSION "20"
 #define NETWORK_STREAM_ID OPENRCT2_VERSION "-" NETWORK_STREAM_VERSION
 
 static Peep* _pickup_peep = nullptr;