diff --git a/gamedir/Data-1.13/Ja2_Options.INI b/gamedir/Data-1.13/Ja2_Options.INI
index 863bd8ba1..06815b464 100644
--- a/gamedir/Data-1.13/Ja2_Options.INI
+++ b/gamedir/Data-1.13/Ja2_Options.INI
@@ -415,6 +415,14 @@ MINE_INCOME_PERCENTAGE = 100
 
 MERC_LEVEL_UP_SALARY_INCREASE_PERCENTAGE = 25
 
+;------------------------------------------------------------------------------------------------------------------------------
+; Set the raw maximum value that a merc's salary can increase when they level up.
+; Default values are high enough that they have no effect (vanilla behaviour).
+;------------------------------------------------------------------------------------------------------------------------------
+MERC_LEVEL_UP_MAXIMUM_SALARY_INCREASE_DAILY = 100000
+MERC_LEVEL_UP_MAXIMUM_SALARY_INCREASE_WEEKLY = 100000
+MERC_LEVEL_UP_MAXIMUM_SALARY_INCREASE_BIWEEKLY = 100000
+
 ;------------------------------------------------------------------------------------------------------------------------------
 ; If MINE_REQUIRES_WORKERS is TRUE, mine income also depends on the number or workers employed in a town. 
 ; The maximum number of workers for each sector can be set in SectorNames.xml. 
diff --git a/gamedir/Data-UB/AddOns/Data-UB-1.13/Ja2_Options.ini b/gamedir/Data-UB/AddOns/Data-UB-1.13/Ja2_Options.ini
index 13291d6b3..31442791f 100644
--- a/gamedir/Data-UB/AddOns/Data-UB-1.13/Ja2_Options.ini
+++ b/gamedir/Data-UB/AddOns/Data-UB-1.13/Ja2_Options.ini
@@ -426,6 +426,14 @@ MINE_INCOME_PERCENTAGE = 100
 
 MERC_LEVEL_UP_SALARY_INCREASE_PERCENTAGE = 25
 
+;------------------------------------------------------------------------------------------------------------------------------
+; Set the raw maximum value that a merc's salary can increase when they level up.
+; Default values are high enough that they have no effect (vanilla behaviour).
+;------------------------------------------------------------------------------------------------------------------------------
+MERC_LEVEL_UP_MAXIMUM_SALARY_INCREASE_DAILY = 100000
+MERC_LEVEL_UP_MAXIMUM_SALARY_INCREASE_WEEKLY = 100000
+MERC_LEVEL_UP_MAXIMUM_SALARY_INCREASE_BIWEEKLY = 100000
+
 ;------------------------------------------------------------------------------------------------------------------------------
 ; If MINE_REQUIRES_WORKERS is TRUE, mine income also depends on the number or workers employed in a town. 
 ; The maximum number of workers for each sector can be set in SectorNames.xml. 
diff --git a/gamedir/Data-UB/AddOns/Data-UB-Vanilla/Ja2_Options.INI b/gamedir/Data-UB/AddOns/Data-UB-Vanilla/Ja2_Options.INI
index 747771126..19dd57c41 100644
--- a/gamedir/Data-UB/AddOns/Data-UB-Vanilla/Ja2_Options.INI
+++ b/gamedir/Data-UB/AddOns/Data-UB-Vanilla/Ja2_Options.INI
@@ -415,6 +415,14 @@ MINE_INCOME_PERCENTAGE = 100
 
 MERC_LEVEL_UP_SALARY_INCREASE_PERCENTAGE = 25
 
+;------------------------------------------------------------------------------------------------------------------------------
+; Set the raw maximum value that a merc's salary can increase when they level up.
+; Default values are high enough that they have no effect (vanilla behaviour).
+;------------------------------------------------------------------------------------------------------------------------------
+MERC_LEVEL_UP_MAXIMUM_SALARY_INCREASE_DAILY = 100000
+MERC_LEVEL_UP_MAXIMUM_SALARY_INCREASE_WEEKLY = 100000
+MERC_LEVEL_UP_MAXIMUM_SALARY_INCREASE_BIWEEKLY = 100000
+
 ;------------------------------------------------------------------------------------------------------------------------------
 ; If MINE_REQUIRES_WORKERS is TRUE, mine income also depends on the number or workers employed in a town. 
 ; The maximum number of workers for each sector can be set in SectorNames.xml. 
diff --git a/gamedir/Data/Ja2_Options.INI b/gamedir/Data/Ja2_Options.INI
index 10069c805..9a9e6131a 100644
--- a/gamedir/Data/Ja2_Options.INI
+++ b/gamedir/Data/Ja2_Options.INI
@@ -415,6 +415,14 @@ MINE_INCOME_PERCENTAGE = 100
 
 MERC_LEVEL_UP_SALARY_INCREASE_PERCENTAGE = 25
 
+;------------------------------------------------------------------------------------------------------------------------------
+; Set the raw maximum value that a merc's salary can increase when they level up.
+; Default values are high enough that they have no effect (vanilla behaviour).
+;------------------------------------------------------------------------------------------------------------------------------
+MERC_LEVEL_UP_MAXIMUM_SALARY_INCREASE_DAILY = 100000
+MERC_LEVEL_UP_MAXIMUM_SALARY_INCREASE_WEEKLY = 100000
+MERC_LEVEL_UP_MAXIMUM_SALARY_INCREASE_BIWEEKLY = 100000
+
 ;------------------------------------------------------------------------------------------------------------------------------
 ; If MINE_REQUIRES_WORKERS is TRUE, mine income also depends on the number or workers employed in a town. 
 ; The maximum number of workers for each sector can be set in SectorNames.xml.