diff --git a/core/src/main/scala/com/yahoo/maha/core/fact/Fact.scala b/core/src/main/scala/com/yahoo/maha/core/fact/Fact.scala
index a08b6a978..f59e182d6 100644
--- a/core/src/main/scala/com/yahoo/maha/core/fact/Fact.scala
+++ b/core/src/main/scala/com/yahoo/maha/core/fact/Fact.scala
@@ -843,6 +843,23 @@ case class FactBuilder private[fact](private val baseFact: Fact, private var tab
     mutableDiscardingSet.toSet
   }
 
+  private[this] def remapMultiplier(
+                                     costMultiplierMap: Map[RequestType, CostMultiplier]
+                                   , costMultiplier: Option[BigDecimal] = None): Map[RequestType, CostMultiplier] = {
+    costMultiplierMap.map(rTypeMult =>
+      rTypeMult._1 -> {
+        val adjustedLRL: LongRangeLookup[BigDecimal] =
+          LongRangeLookup(
+            rTypeMult._2.rows.list.map(
+              row => (row._1, row._2 * costMultiplier.getOrElse(1))
+            )
+          )
+        CostMultiplier(adjustedLRL)
+      }
+
+    )
+  }
+
   def withNewGrain(name: String
                    , from: String
                    , grain: Grain
@@ -1269,7 +1286,8 @@ case class FactBuilder private[fact](private val baseFact: Fact, private var tab
                    , forceFilters: Set[ForceFilter] = Set.empty
                    , resetAliasIfNotPresent: Boolean = false
                    , availableOnwardsDate : Option[String] = None
-                   , underlyingTableName: Option[String] = None) : FactBuilder = {
+                   , underlyingTableName: Option[String] = None
+                   , costMultiplier: Option[BigDecimal] = None) : FactBuilder = {
     require(tableMap.nonEmpty, "no table to create subset from")
     require(tableMap.contains(from), s"from table not valid $from")
     require(!tableMap.contains(name), s"table $name already exists")
@@ -1329,6 +1347,9 @@ case class FactBuilder private[fact](private val baseFact: Fact, private var tab
         case _ =>
           ddlAnnotation
       }
+
+      val remappedMultiplier: Map[RequestType, CostMultiplier] = remapMultiplier(fromTable.costMultiplierMap, costMultiplier)
+
       tableMap = tableMap +
         (name -> new FactTable(
           name
@@ -1341,7 +1362,7 @@ case class FactBuilder private[fact](private val baseFact: Fact, private var tab
           , Option(fromTable)
           , fromTable.annotations
           , newDDLAnnotation
-          , fromTable.costMultiplierMap
+          , remappedMultiplier
           , newForceFilters
           , fromTable.defaultCardinality
           , fromTable.defaultRowCount
@@ -1442,6 +1463,7 @@ case class FactBuilder private[fact](private val baseFact: Fact, private var tab
 
       val newGrain = grain.getOrElse(fromTable.grain)
       val newForceFilters = if(forceFilters.isEmpty) fromTable.forceFilters else forceFilters
+      val remappedMultiplier: Map[RequestType, CostMultiplier] = remapMultiplier(fromTable.costMultiplierMap, costMultiplier)
 
       tableMap = tableMap +
         (name -> new FactTable(
@@ -1455,7 +1477,7 @@ case class FactBuilder private[fact](private val baseFact: Fact, private var tab
           , Option(fromTable)
           , fromTable.annotations ++ overrideAnnotations
           , ddlAnnotations
-          , fromTable.costMultiplierMap
+          , remappedMultiplier
           , newForceFilters
           , fromTable.defaultCardinality
           , fromTable.defaultRowCount
diff --git a/core/src/test/scala/com/yahoo/maha/core/ColumnTest.scala b/core/src/test/scala/com/yahoo/maha/core/ColumnTest.scala
index d78002360..a8deede06 100644
--- a/core/src/test/scala/com/yahoo/maha/core/ColumnTest.scala
+++ b/core/src/test/scala/com/yahoo/maha/core/ColumnTest.scala
@@ -3,7 +3,7 @@
 package com.yahoo.maha.core
 
 import com.yahoo.maha.core.dimension.{ConstDimCol, DimCol, HivePartDimCol}
-import com.yahoo.maha.core.fact.{ConstFactCol, DruidConstDerFactCol, HiveDerFactCol, NoopRollup}
+import com.yahoo.maha.core.fact.{ConstFactCol, DruidConstDerFactCol, HiveDerFactCol, NoopRollup, PostgresDerFactCol}
 import org.scalatest.funsuite.AnyFunSuite
 import org.scalatest.matchers.should.Matchers
 
@@ -69,4 +69,20 @@ class ColumnTest extends AnyFunSuite with Matchers {
       }
     }
   }
+
+  test("PostgresDerFactCol test") {
+    ColumnContext.withColumnContext { implicit cc: ColumnContext =>
+      import PostgresExpression._
+      DimCol("dimCol", IntType())
+      val col =  PostgresDerFactCol("postgres_ctr_copywith_test", DecType(), "{clicks}" /- "{impressions}" * "1000")
+      ColumnContext.withColumnContext {
+        implicit cc:ColumnContext=>
+          col.copyWith(cc, Map.empty, true)
+      }
+      ColumnContext.withColumnContext {
+        implicit cc:ColumnContext=>
+          col.copyWith(cc, Map.empty, false)
+      }
+    }
+  }
 }
diff --git a/core/src/test/scala/com/yahoo/maha/core/fact/NewRollupFactTest.scala b/core/src/test/scala/com/yahoo/maha/core/fact/NewRollupFactTest.scala
index 86385e7ad..3aec99510 100644
--- a/core/src/test/scala/com/yahoo/maha/core/fact/NewRollupFactTest.scala
+++ b/core/src/test/scala/com/yahoo/maha/core/fact/NewRollupFactTest.scala
@@ -7,7 +7,7 @@ import com.yahoo.maha.core.NoopSchema.NoopSchema
 import com.yahoo.maha.core._
 import com.yahoo.maha.core.ddl.HiveDDLAnnotation
 import com.yahoo.maha.core.dimension.DimCol
-import com.yahoo.maha.core.request.{RequestType, SyncRequest}
+import com.yahoo.maha.core.request.{AsyncRequest, RequestType, SyncRequest}
 
 /**
  * Created by jians on 10/20/15.
@@ -295,6 +295,18 @@ class NewRollupFactTest extends BaseFactTest {
     require(bcOption.isDefined, "Failed to get candidates!")
     assert(bcOption.get.facts.values.exists( f => f.fact.name == "fact2") === true)
   }
+
+  test("Create a new rollup with a different cost basis") {
+    val fact = fact1
+    fact.newRollUp("fact2", "fact1", Set("ad_group_id"), schemas = Set(AdvertiserSchema, ResellerSchema), availableOnwardsDate = Some(toDate), costMultiplier = Some(0.5))
+
+    val costMultMap1 = publicFact(fact).facts("fact1").costMultiplierMap
+    val costMultMap2 = publicFact(fact).facts("fact2").costMultiplierMap
+    assert(costMultMap1(SyncRequest).rows.list.head._2 == 1 && costMultMap2(SyncRequest).rows.list.head._2 == 0.5)
+    assert(costMultMap1(AsyncRequest).rows.list.head._2 == 1 && costMultMap2(AsyncRequest).rows.list.head._2 == 0.5)
+  }
+
+
 }
 
 
diff --git a/core/src/test/scala/com/yahoo/maha/core/fact/createSubsetTest.scala b/core/src/test/scala/com/yahoo/maha/core/fact/createSubsetTest.scala
index d2c6a04ac..4241ebd02 100644
--- a/core/src/test/scala/com/yahoo/maha/core/fact/createSubsetTest.scala
+++ b/core/src/test/scala/com/yahoo/maha/core/fact/createSubsetTest.scala
@@ -6,7 +6,7 @@ import com.yahoo.maha.core.CoreSchema._
 import com.yahoo.maha.core.NoopSchema.NoopSchema
 import com.yahoo.maha.core.ddl.HiveDDLAnnotation
 import com.yahoo.maha.core.dimension.DimCol
-import com.yahoo.maha.core.request.SyncRequest
+import com.yahoo.maha.core.request.{AsyncRequest, SyncRequest}
 import com.yahoo.maha.core.{ColumnContext, DailyGrain, InFilter, InFilterOperation, IntType, OracleEngine, PrimaryKey, StrType}
 
 /**
@@ -165,4 +165,14 @@ class createSubsetTest extends BaseFactTest {
     require(bcOption.isDefined, "Failed to get candidates!")
     assert(bcOption.get.facts.keys.exists(_ == "fact2") === true, "create subset failed")
   }
+
+  test("Create a subset with a different cost basis") {
+    val fact = fact1
+    fact.createSubset("fact2", "fact1", Set("clicks"), schemas = Set(AdvertiserSchema, ResellerSchema), availableOnwardsDate = Some(toDate), costMultiplier = Some(0.5))
+
+    val costMultMap1 = publicFact(fact).facts("fact1").costMultiplierMap
+    val costMultMap2 = publicFact(fact).facts("fact2").costMultiplierMap
+    assert(costMultMap1(SyncRequest).rows.list.head._2 == 1 && costMultMap2(SyncRequest).rows.list.head._2 == 0.5)
+    assert(costMultMap1(AsyncRequest).rows.list.head._2 == 1 && costMultMap2(AsyncRequest).rows.list.head._2 == 0.5)
+  }
 }