diff --git a/README.md b/README.md
index b24f466..604de2b 100644
--- a/README.md
+++ b/README.md
@@ -80,6 +80,7 @@ Where `input` is of the type `FinalBonusInput` with the following parameters:
 regularPayment: Double,                 // 25.0
 currentBalance: Double,                 // 25.0
 paidInThisMonth: Double,                // 50.0
+canPayInThisMonth: Double,              // 0.0
 thisMonthEndDate: YearMonthDayInput,    // YearMonthDayInput(2022, 3, 31)
 secondTermEndDate: YearMonthDayInput,   // YearMonthDayInput(2024, 2, 28)
 balanceMustBeMoreThanForBonus: Double,  // 50.0
diff --git a/src/commonMain/kotlin/uk/gov/hmrc/helptosavecalculator/FinalBonusTermCalculation.kt b/src/commonMain/kotlin/uk/gov/hmrc/helptosavecalculator/FinalBonusTermCalculation.kt
index 2c5f09b..ed92430 100644
--- a/src/commonMain/kotlin/uk/gov/hmrc/helptosavecalculator/FinalBonusTermCalculation.kt
+++ b/src/commonMain/kotlin/uk/gov/hmrc/helptosavecalculator/FinalBonusTermCalculation.kt
@@ -56,10 +56,9 @@ internal class FinalBonusTermCalculation {
 
     fun finalBonusStatus(
         input: FinalBonusInput,
-        monthsLeftInScheme: Int,
-        additionalSavingsThisMonth: Double
+        monthsLeftInScheme: Int
     ): FinalBonusStatus {
-        val highestPossibleBalance = input.currentBalance + additionalSavingsThisMonth + (monthsLeftInScheme * 50)
+        val highestPossibleBalance = input.currentBalance + input.canPayInThisMonth + (monthsLeftInScheme * 50)
         return if (input.secondTermBonusEstimate > 0.0) FinalBonusStatus.EARNED else {
             if (highestPossibleBalance > input.balanceMustBeMoreThanForBonus)
                 FinalBonusStatus.POSSIBLE_TO_EARN else FinalBonusStatus.CANNOT_EARN
diff --git a/src/commonMain/kotlin/uk/gov/hmrc/helptosavecalculator/FinalBonusTermCalculator.kt b/src/commonMain/kotlin/uk/gov/hmrc/helptosavecalculator/FinalBonusTermCalculator.kt
index 5aa0bbd..089e8e9 100644
--- a/src/commonMain/kotlin/uk/gov/hmrc/helptosavecalculator/FinalBonusTermCalculator.kt
+++ b/src/commonMain/kotlin/uk/gov/hmrc/helptosavecalculator/FinalBonusTermCalculator.kt
@@ -44,7 +44,7 @@ object FinalBonusTermCalculator {
         val totalProjectedSavingsIncludingBonuses = calculation.calculateTotalProjectedSavingsIncludeBonuses(
                 totalProjectedSavings,
                 totalProjectedBonuses)
-        val finalBonusStatus = calculation.finalBonusStatus(input, monthLeftInScheme, additionalSavingsThisMonth)
+        val finalBonusStatus = calculation.finalBonusStatus(input, monthLeftInScheme)
 
         return FinalBonusCalculatorResponse(
                 totalProjectedSavingsIncludingBonuses,
diff --git a/src/commonMain/kotlin/uk/gov/hmrc/helptosavecalculator/models/FinalBonusInput.kt b/src/commonMain/kotlin/uk/gov/hmrc/helptosavecalculator/models/FinalBonusInput.kt
index 1fe7015..f56fb06 100644
--- a/src/commonMain/kotlin/uk/gov/hmrc/helptosavecalculator/models/FinalBonusInput.kt
+++ b/src/commonMain/kotlin/uk/gov/hmrc/helptosavecalculator/models/FinalBonusInput.kt
@@ -19,6 +19,7 @@ data class FinalBonusInput(
     val regularPayment: Double,
     val currentBalance: Double,
     val paidInThisMonth: Double,
+    val canPayInThisMonth: Double,
     val thisMonthEndDate: YearMonthDayInput,
     val secondTermEndDate: YearMonthDayInput,
     val balanceMustBeMoreThanForBonus: Double,
diff --git a/src/commonTest/kotlin/uk/gov/hmrc/FinalBonusTermCalculationTest.kt b/src/commonTest/kotlin/uk/gov/hmrc/FinalBonusTermCalculationTest.kt
index d9e59c5..89446bf 100644
--- a/src/commonTest/kotlin/uk/gov/hmrc/FinalBonusTermCalculationTest.kt
+++ b/src/commonTest/kotlin/uk/gov/hmrc/FinalBonusTermCalculationTest.kt
@@ -29,6 +29,7 @@ class FinalBonusTermCalculationTest {
         val input = FinalBonusInput(25.0,
                 0.0,
                 10.0,
+                40.0,
                 YearMonthDayInput(2022, 3),
                 YearMonthDayInput(2024, 2, 28),
                 0.0,
@@ -44,6 +45,7 @@ class FinalBonusTermCalculationTest {
         val input = FinalBonusInput(10.0,
                 0.0,
                 25.0,
+                25.0,
                 YearMonthDayInput(2022, 3),
                 YearMonthDayInput(2024, 2, 28),
                 0.0,
@@ -69,6 +71,7 @@ class FinalBonusTermCalculationTest {
         val input = FinalBonusInput(10.0,
                 0.0,
                 25.0,
+                25.0,
                 YearMonthDayInput(2022, 3),
                 YearMonthDayInput(2024, 2, 28),
                 0.0,
@@ -84,6 +87,7 @@ class FinalBonusTermCalculationTest {
         val input = FinalBonusInput(10.0,
                 0.0,
                 25.0,
+                25.0,
                 YearMonthDayInput(2022, 3),
                 YearMonthDayInput(2024, 2, 28),
                 2.0,
@@ -99,6 +103,7 @@ class FinalBonusTermCalculationTest {
         val input = FinalBonusInput(10.0,
                 0.0,
                 25.0,
+                25.0,
                 YearMonthDayInput(2022, 3),
                 YearMonthDayInput(2024, 2, 28),
                 10.0,
@@ -114,6 +119,7 @@ class FinalBonusTermCalculationTest {
         val input = FinalBonusInput(10.0,
                 0.0,
                 25.0,
+                25.0,
                 YearMonthDayInput(2022, 3),
                 YearMonthDayInput(2024, 2, 28),
                 10.0,
@@ -145,6 +151,7 @@ class FinalBonusTermCalculationTest {
         val input = FinalBonusInput(10.0,
                 0.0,
                 25.0,
+                25.0,
                 YearMonthDayInput(2023, 3),
                 YearMonthDayInput(2024, 2, 28),
                 10.0,
@@ -160,12 +167,13 @@ class FinalBonusTermCalculationTest {
         val input = FinalBonusInput(10.0,
                 0.0,
                 25.0,
+                25.0,
                 YearMonthDayInput(2023, 3),
                 YearMonthDayInput(2024, 2, 28),
                 10.0,
                 5.0)
         val calculation = FinalBonusTermCalculation()
-        val result = calculation.finalBonusStatus(input, 23, 0.0)
+        val result = calculation.finalBonusStatus(input, 23)
 
         assertEquals(FinalBonusStatus.EARNED, result)
     }
@@ -175,12 +183,13 @@ class FinalBonusTermCalculationTest {
         val input = FinalBonusInput(10.0,
                 0.0,
                 25.0,
+                25.0,
                 YearMonthDayInput(2023, 3),
                 YearMonthDayInput(2024, 2, 28),
                 10.0,
                 0.0)
         val calculation = FinalBonusTermCalculation()
-        val result = calculation.finalBonusStatus(input, 23, 0.0)
+        val result = calculation.finalBonusStatus(input, 23)
 
         assertEquals(FinalBonusStatus.POSSIBLE_TO_EARN, result)
     }
@@ -190,12 +199,13 @@ class FinalBonusTermCalculationTest {
         val input = FinalBonusInput(50.0,
                 0.0,
                 0.0,
+                25.0,
                 YearMonthDayInput(2023, 3),
                 YearMonthDayInput(2024, 2, 28),
                 1200.0,
                 0.0)
         val calculation = FinalBonusTermCalculation()
-        val result = calculation.finalBonusStatus(input, 22, 50.0)
+        val result = calculation.finalBonusStatus(input, 22)
 
         assertEquals(FinalBonusStatus.CANNOT_EARN, result)
     }
diff --git a/src/commonTest/kotlin/uk/gov/hmrc/FinalBonusTermCalculatorTest.kt b/src/commonTest/kotlin/uk/gov/hmrc/FinalBonusTermCalculatorTest.kt
index bf50b96..0c99370 100644
--- a/src/commonTest/kotlin/uk/gov/hmrc/FinalBonusTermCalculatorTest.kt
+++ b/src/commonTest/kotlin/uk/gov/hmrc/FinalBonusTermCalculatorTest.kt
@@ -31,6 +31,7 @@ class FinalBonusTermCalculatorTest {
         val input = FinalBonusInput(0.0,
                 0.0,
                 10.0,
+                40.0,
                 YearMonthDayInput(2022, 3),
                 YearMonthDayInput(2024, 2, 28),
                 0.0,
@@ -45,6 +46,7 @@ class FinalBonusTermCalculatorTest {
         val input = FinalBonusInput(51.0,
                 0.0,
                 10.0,
+                40.0,
                 YearMonthDayInput(2022, 3),
                 YearMonthDayInput(2024, 2, 28),
                 0.0,
@@ -59,6 +61,7 @@ class FinalBonusTermCalculatorTest {
         val input = FinalBonusInput(1.0,
                 0.0,
                 0.0,
+                50.0,
                 YearMonthDayInput(2022, 3),
                 YearMonthDayInput(2024, 2, 28),
                 0.0,
@@ -76,6 +79,7 @@ class FinalBonusTermCalculatorTest {
         val input = FinalBonusInput(25.0,
                 0.0,
                 0.0,
+                50.0,
                 YearMonthDayInput(2022, 3),
                 YearMonthDayInput(2024, 2, 28),
                 0.0,
@@ -93,6 +97,7 @@ class FinalBonusTermCalculatorTest {
         val input = FinalBonusInput(50.0,
                 0.0,
                 0.0,
+                50.0,
                 YearMonthDayInput(2022, 3),
                 YearMonthDayInput(2024, 2, 28),
                 0.0,
@@ -110,6 +115,7 @@ class FinalBonusTermCalculatorTest {
         val input = FinalBonusInput(25.0,
                 25.0,
                 50.0,
+                50.0,
                 YearMonthDayInput(2022, 3),
                 YearMonthDayInput(2024, 2, 28),
                 0.0,
@@ -127,6 +133,7 @@ class FinalBonusTermCalculatorTest {
         val input = FinalBonusInput(25.0,
                 0.0,
                 0.0,
+                50.0,
                 YearMonthDayInput(2024, 2),
                 YearMonthDayInput(2024, 2, 28),
                 1200.0,