diff --git a/app/models/account.rb b/app/models/account.rb
index a882cf53..5c77a16c 100644
--- a/app/models/account.rb
+++ b/app/models/account.rb
@@ -1,6 +1,8 @@
 class Account < ApplicationRecord
   include Syncable
 
+  validates :family, presence: true
+
   broadcasts_refreshes
   belongs_to :family
   has_many :balances, class_name: "AccountBalance"
diff --git a/app/models/account_balance.rb b/app/models/account_balance.rb
index 024cc30d..9915ddde 100644
--- a/app/models/account_balance.rb
+++ b/app/models/account_balance.rb
@@ -1,6 +1,8 @@
 class AccountBalance < ApplicationRecord
   belongs_to :account
 
+  validates :account, :date, :balance, presence: true
+
   scope :in_period, ->(period) { period.date_range.nil? ? all : where(date: period.date_range) }
 
   def self.to_series(account, period = Period.all)
diff --git a/app/models/exchange_rate.rb b/app/models/exchange_rate.rb
index 6250c6bd..5f5827c4 100644
--- a/app/models/exchange_rate.rb
+++ b/app/models/exchange_rate.rb
@@ -1,4 +1,6 @@
 class ExchangeRate < ApplicationRecord
+  validates :base_currency, :converted_currency, presence: true
+
   def self.convert(from, to, amount)
     return amount unless EXCHANGE_RATE_ENABLED
 
diff --git a/app/models/transaction.rb b/app/models/transaction.rb
index b3ecf6b4..43ea6480 100644
--- a/app/models/transaction.rb
+++ b/app/models/transaction.rb
@@ -2,6 +2,8 @@ class Transaction < ApplicationRecord
   belongs_to :account
   belongs_to :category, optional: true
 
+  validates :name, :date, :amount, :account, presence: true
+
   after_commit :sync_account
 
   def self.ransackable_attributes(auth_object = nil)
diff --git a/app/models/transaction/category.rb b/app/models/transaction/category.rb
index 042e4edd..c6c53f2b 100644
--- a/app/models/transaction/category.rb
+++ b/app/models/transaction/category.rb
@@ -2,6 +2,8 @@ class Transaction::Category < ApplicationRecord
   has_many :transactions
   belongs_to :family
 
+  validates :name, :color, :family, presence: true
+
   before_update :clear_internal_category, if: :name_changed?
 
   DEFAULT_CATEGORIES = [
diff --git a/app/models/valuation.rb b/app/models/valuation.rb
index 34bbeb53..70c520bf 100644
--- a/app/models/valuation.rb
+++ b/app/models/valuation.rb
@@ -1,6 +1,8 @@
 class Valuation < ApplicationRecord
   belongs_to :account
 
+  validates :account, :date, :value, presence: true
+
   after_commit :sync_account
 
   scope :in_period, ->(period) { period.date_range.nil? ? all : where(date: period.date_range) }