diff --git a/lib/lunchmoney.rb b/lib/lunchmoney.rb
index f1d76a7..d75b2e0 100644
--- a/lib/lunchmoney.rb
+++ b/lib/lunchmoney.rb
@@ -12,6 +12,9 @@ class Module
   include T::Sig
 end
 
+# Add type alias for when Integer and Float can both be used
+Number = T.type_alias { T.any(Integer, Float) }
+
 require_relative "lunchmoney/version"
 require_relative "lunchmoney/validators"
 require_relative "lunchmoney/api"
diff --git a/lib/lunchmoney/budget/budget_calls.rb b/lib/lunchmoney/budget/budget_calls.rb
index 156b144..7bc832c 100644
--- a/lib/lunchmoney/budget/budget_calls.rb
+++ b/lib/lunchmoney/budget/budget_calls.rb
@@ -47,10 +47,10 @@ def budgets(start_date:, end_date:, currency: nil)
       params(
         start_date: String,
         category_id: Integer,
-        amount: T.any(Integer, Float),
+        amount: Number,
         currency: T.nilable(String),
       ).returns(T.any(
-        T::Hash[Symbol, { category_id: Integer, amount: T.any(Integer, Float), currency: String, start_date: String }],
+        T::Hash[Symbol, { category_id: Integer, amount: Number, currency: String, start_date: String }],
         LunchMoney::Errors,
       ))
     end
diff --git a/lib/lunchmoney/budget/config.rb b/lib/lunchmoney/budget/config.rb
index 3bdbd5c..2bd3169 100644
--- a/lib/lunchmoney/budget/config.rb
+++ b/lib/lunchmoney/budget/config.rb
@@ -7,7 +7,10 @@ class Config < LunchMoney::DataObject
     # API object reference documentation: https://lunchmoney.dev/#config-object
 
     sig { returns(Integer) }
-    attr_accessor :config_id, :amount, :to_base
+    attr_accessor :config_id
+
+    sig { returns(Number) }
+    attr_accessor :amount, :to_base
 
     sig { returns(String) }
     attr_accessor :cadence, :currency, :auto_suggest
@@ -16,9 +19,9 @@ class Config < LunchMoney::DataObject
       params(
         config_id: Integer,
         cadence: String,
-        amount: Integer,
+        amount: Number,
         currency: String,
-        to_base: Integer,
+        to_base: Number,
         auto_suggest: String,
       ).void
     end
diff --git a/lib/lunchmoney/budget/data.rb b/lib/lunchmoney/budget/data.rb
index 719f0f9..91cad10 100644
--- a/lib/lunchmoney/budget/data.rb
+++ b/lib/lunchmoney/budget/data.rb
@@ -9,7 +9,7 @@ class Data < LunchMoney::DataObject
     sig { returns(T.nilable(Integer)) }
     attr_accessor :num_transactions
 
-    sig { returns(T.nilable(T.any(Integer, Float))) }
+    sig { returns(T.nilable(Number)) }
     attr_accessor :budget_amount, :budget_to_base, :spending_to_base
 
     sig { returns(T.nilable(String)) }
@@ -20,11 +20,11 @@ class Data < LunchMoney::DataObject
 
     sig do
       params(
-        spending_to_base: T.nilable(T.any(Integer, Float)),
+        spending_to_base: T.nilable(Number),
         num_transactions: T.nilable(Integer),
-        budget_amount: T.nilable(T.any(Integer, Float)),
+        budget_amount: T.nilable(Number),
         budget_currency: T.nilable(String),
-        budget_to_base: T.nilable(T.any(Integer, Float)),
+        budget_to_base: T.nilable(Number),
         is_automated: T.nilable(T::Boolean),
       ).void
     end
diff --git a/lib/lunchmoney/recurring_expenses/recurring_expense/recurring_expense.rb b/lib/lunchmoney/recurring_expenses/recurring_expense/recurring_expense.rb
index ad1f34f..7c8a84b 100644
--- a/lib/lunchmoney/recurring_expenses/recurring_expense/recurring_expense.rb
+++ b/lib/lunchmoney/recurring_expenses/recurring_expense/recurring_expense.rb
@@ -35,7 +35,7 @@ class RecurringExpense < RecurringExpenseBase
         plaid_account_id: T.nilable(Integer),
         asset_id: T.nilable(Integer),
         transaction_id: T.nilable(Integer),
-        to_base: T.nilable(Integer),
+        to_base: T.nilable(Number),
       ).void
     end
     def initialize(cadence:, payee:, amount:, currency:, billing_date:, type:, source:, id:, created_at:,
diff --git a/lib/lunchmoney/recurring_expenses/recurring_expense/recurring_expense_base.rb b/lib/lunchmoney/recurring_expenses/recurring_expense/recurring_expense_base.rb
index 6ca1ac8..1de1752 100644
--- a/lib/lunchmoney/recurring_expenses/recurring_expense/recurring_expense_base.rb
+++ b/lib/lunchmoney/recurring_expenses/recurring_expense/recurring_expense_base.rb
@@ -7,7 +7,7 @@ class RecurringExpenseBase < LunchMoney::DataObject
     sig { returns(String) }
     attr_accessor :payee, :currency, :amount
 
-    sig { returns(T.nilable(Integer)) }
+    sig { returns(T.nilable(Number)) }
     attr_accessor :to_base
 
     sig do
@@ -15,7 +15,7 @@ class RecurringExpenseBase < LunchMoney::DataObject
         payee: String,
         amount: String,
         currency: String,
-        to_base: T.nilable(Integer),
+        to_base: T.nilable(Number),
       ).void
     end
     def initialize(payee:, amount:, currency:, to_base:)
diff --git a/lib/lunchmoney/transactions/transaction/child_transaction.rb b/lib/lunchmoney/transactions/transaction/child_transaction.rb
index 180c25a..4cbfefe 100644
--- a/lib/lunchmoney/transactions/transaction/child_transaction.rb
+++ b/lib/lunchmoney/transactions/transaction/child_transaction.rb
@@ -14,7 +14,7 @@ class ChildTransaction < TransactionBase
         date: String,
         amount: String,
         currency: String,
-        to_base: T.any(Integer, Float),
+        to_base: Number,
         payee: String,
         formatted_date: String,
         notes: T.nilable(String),
diff --git a/lib/lunchmoney/transactions/transaction/split.rb b/lib/lunchmoney/transactions/transaction/split.rb
index 64a6b05..337f95d 100644
--- a/lib/lunchmoney/transactions/transaction/split.rb
+++ b/lib/lunchmoney/transactions/transaction/split.rb
@@ -4,12 +4,12 @@
 module LunchMoney
   # Object used to split a transaction when updating https://lunchmoney.dev/#update-transaction
   class Split < TransactionModificationBase
-    sig { returns(T.any(Integer, String)) }
+    sig { returns(T.any(Number, String)) }
     attr_accessor :amount
 
     sig do
       params(
-        amount: T.any(Integer, String),
+        amount: T.any(Number, String),
         payee: T.nilable(String),
         date: T.nilable(String),
         category_id: T.nilable(Integer),
diff --git a/lib/lunchmoney/transactions/transaction/transaction.rb b/lib/lunchmoney/transactions/transaction/transaction.rb
index 5b8790f..8570d0d 100644
--- a/lib/lunchmoney/transactions/transaction/transaction.rb
+++ b/lib/lunchmoney/transactions/transaction/transaction.rb
@@ -56,7 +56,7 @@ class Transaction < TransactionBase
         date: String,
         amount: String,
         currency: String,
-        to_base: T.any(Integer, Float),
+        to_base: Number,
         payee: String,
         is_income: T::Boolean,
         exclude_from_budget: T::Boolean,
diff --git a/lib/lunchmoney/transactions/transaction/transaction_base.rb b/lib/lunchmoney/transactions/transaction/transaction_base.rb
index 08f6fc2..dbac1b9 100644
--- a/lib/lunchmoney/transactions/transaction/transaction_base.rb
+++ b/lib/lunchmoney/transactions/transaction/transaction_base.rb
@@ -7,7 +7,7 @@ class TransactionBase < LunchMoney::DataObject
     sig { returns(Integer) }
     attr_accessor :id
 
-    sig { returns(T.any(Integer, Float)) }
+    sig { returns(Number) }
     attr_accessor :to_base
 
     sig { returns(T.nilable(Integer)) }
@@ -28,7 +28,7 @@ class TransactionBase < LunchMoney::DataObject
         date: String,
         amount: String,
         currency: String,
-        to_base: T.any(Integer, Float),
+        to_base: Number,
         payee: String,
         notes: T.nilable(String),
         asset_id: T.nilable(Integer),