diff --git a/db/migrations/003_issuer_profiles_and_clients.rb b/db/migrations/003_issuer_profiles_and_clients.rb
new file mode 100644
index 0000000..711a02d
--- /dev/null
+++ b/db/migrations/003_issuer_profiles_and_clients.rb
@@ -0,0 +1,41 @@
+Sequel.migration do
+  change do
+    create_table(:issuer_profiles) do
+      foreign_key :user_id, :users, type: :Bignum, primary_key: true,
+                  on_delete: :restrict
+      String   :legal_name
+      String   :legal_name_local
+      String   :tax_id
+      String   :reg_number
+      Date     :registered_on
+      String   :address,          text: true
+      String   :contact_email
+      String   :contact_phone
+      String   :bank_name
+      String   :bank_iban
+      String   :bank_swift
+      String   :invoice_prefix,   null: false, default: 'INV'
+      String   :default_currency, null: false, default: 'USD', size: 3
+      Integer  :default_due_days, null: false, default: 14
+      String   :default_notes,    text: true
+      DateTime :updated_at,       null: false
+    end
+
+    create_table(:clients) do
+      primary_key :id, type: :Bignum
+      foreign_key :owner_id, :users, type: :Bignum, null: false,
+                  on_delete: :restrict
+      String   :name,            null: false
+      String   :email,           null: false
+      String   :address,         text: true
+      String   :default_currency, size: 3
+      Integer  :default_due_days
+      String   :default_notes,   text: true
+      DateTime :archived_at
+      DateTime :created_at,      null: false
+    end
+
+    run "CREATE UNIQUE INDEX clients_owner_email_idx ON clients (owner_id, lower(email))"
+    run "CREATE INDEX clients_owner_active_idx ON clients (owner_id) WHERE archived_at IS NULL"
+  end
+end