diff --git a/app/Http/Controllers/CurrencyController.php b/app/Http/Controllers/CurrencyController.php
index ba9129c3b2..52e43664d9 100644
--- a/app/Http/Controllers/CurrencyController.php
+++ b/app/Http/Controllers/CurrencyController.php
@@ -212,7 +212,11 @@ class CurrencyController extends Controller
         }
 
         if ($this->repository->currencyInUse($currency)) {
-            $request->session()->flash('error', (string)trans('firefly.cannot_disable_currency', ['name' => e($currency->name)]));
+
+            $location = $this->repository->currencyInUseAt($currency);
+            $message  = (string)trans(sprintf('firefly.cannot_disable_currency_%s', $location), ['name' => e($currency->name)]);
+
+            $request->session()->flash('error', $message);
             Log::channel('audit')->info(sprintf('Tried to disable currency %s but is in use.', $currency->code));
 
             return redirect(route('currencies.index'));
@@ -233,6 +237,10 @@ class CurrencyController extends Controller
             app('preferences')->mark();
         }
 
+        if ('EUR' === $currency->code) {
+            session()->flash('warning', (string)trans('firefly.disable_EUR_side_effects'));
+        }
+
         session()->flash('success', (string)trans('firefly.currency_is_now_disabled', ['name' => $currency->name]));
 
         return redirect(route('currencies.index'));
diff --git a/app/Repositories/Currency/CurrencyRepository.php b/app/Repositories/Currency/CurrencyRepository.php
index 0091587cc9..3c52510fe6 100644
--- a/app/Repositories/Currency/CurrencyRepository.php
+++ b/app/Repositories/Currency/CurrencyRepository.php
@@ -65,7 +65,7 @@ class CurrencyRepository implements CurrencyRepositoryInterface
      */
     public function countJournals(TransactionCurrency $currency): int
     {
-        return $currency->transactions()->count() + $currency->transactionJournals()->count();
+        return $currency->transactions()->whereNull('deleted_at')->count() + $currency->transactionJournals()->whereNull('deleted_at')->count();
 
     }
 
@@ -75,20 +75,32 @@ class CurrencyRepository implements CurrencyRepositoryInterface
      * @return bool
      */
     public function currencyInUse(TransactionCurrency $currency): bool
+    {
+        $result = $this->currencyInUseAt($currency);
+
+        return null !== $result;
+    }
+
+    /**
+     * @param TransactionCurrency $currency
+     *
+     * @return string|null
+     */
+    public function currencyInUseAt(TransactionCurrency $currency): ?string
     {
         Log::debug(sprintf('Now in currencyInUse() for #%d ("%s")', $currency->id, $currency->code));
         $countJournals = $this->countJournals($currency);
         if ($countJournals > 0) {
             Log::info(sprintf('Count journals is %d, return true.', $countJournals));
 
-            return true;
+            return 'journals';
         }
 
         // is the only currency left
         if (1 === $this->getAll()->count()) {
             Log::info('Is the last currency in the system, return true. ');
 
-            return true;
+            return 'last_left';
         }
 
         // is being used in accounts:
@@ -96,7 +108,7 @@ class CurrencyRepository implements CurrencyRepositoryInterface
         if ($meta > 0) {
             Log::info(sprintf('Used in %d accounts as currency_id, return true. ', $meta));
 
-            return true;
+            return 'account_meta';
         }
 
         // is being used in bills:
@@ -104,7 +116,7 @@ class CurrencyRepository implements CurrencyRepositoryInterface
         if ($bills > 0) {
             Log::info(sprintf('Used in %d bills as currency, return true. ', $bills));
 
-            return true;
+            return 'bills';
         }
 
         // is being used in recurring transactions
@@ -114,15 +126,18 @@ class CurrencyRepository implements CurrencyRepositoryInterface
         if ($recurringAmount > 0 || $recurringForeign > 0) {
             Log::info(sprintf('Used in %d recurring transactions as (foreign) currency id, return true. ', $recurringAmount + $recurringForeign));
 
-            return true;
+            return 'recurring';
         }
 
         // is being used in accounts (as integer)
-        $meta = AccountMeta::where('name', 'currency_id')->where('data', json_encode((int)$currency->id))->count();
+        $meta = AccountMeta
+            ::leftJoin('accounts', 'accounts.id', '=', 'account_meta.account_id')
+            ->whereNull('accounts.deleted_at')
+            ->where('account_meta.name', 'currency_id')->where('account_meta.data', json_encode((int)$currency->id))->count();
         if ($meta > 0) {
             Log::info(sprintf('Used in %d accounts as currency_id, return true. ', $meta));
 
-            return true;
+            return 'account_meta';
         }
 
         // is being used in available budgets
@@ -130,7 +145,7 @@ class CurrencyRepository implements CurrencyRepositoryInterface
         if ($availableBudgets > 0) {
             Log::info(sprintf('Used in %d available budgets as currency, return true. ', $availableBudgets));
 
-            return true;
+            return 'available_budgets';
         }
 
         // is being used in budget limits
@@ -138,7 +153,7 @@ class CurrencyRepository implements CurrencyRepositoryInterface
         if ($budgetLimit > 0) {
             Log::info(sprintf('Used in %d budget limits as currency, return true. ', $budgetLimit));
 
-            return true;
+            return 'budget_limits';
         }
 
         // is the default currency for the user or the system
@@ -146,20 +161,20 @@ class CurrencyRepository implements CurrencyRepositoryInterface
         if ($currency->code === $defaultCode) {
             Log::info('Is the default currency of the user, return true.');
 
-            return true;
+            return 'current_default';
         }
 
-        // is the default currency for the system
-        //        $defaultSystemCode = config('firefly.default_currency', 'EUR');
-        //        $result            = $currency->code === $defaultSystemCode;
-        //        if (true === $result) {
-        //            Log::info('Is the default currency of the SYSTEM, return true.');
-        //
-        //            return true;
-        //        }
+//        // is the default currency for the system
+//        $defaultSystemCode = config('firefly.default_currency', 'EUR');
+//        $result            = $currency->code === $defaultSystemCode;
+//        if (true === $result) {
+//            Log::info('Is the default currency of the SYSTEM, return true.');
+//
+//            return 'system_fallback';
+//        }
         Log::debug('Currency is not used, return false.');
 
-        return false;
+        return null;
     }
 
     /**
diff --git a/app/Repositories/Currency/CurrencyRepositoryInterface.php b/app/Repositories/Currency/CurrencyRepositoryInterface.php
index 9dc3105287..4d3d929467 100644
--- a/app/Repositories/Currency/CurrencyRepositoryInterface.php
+++ b/app/Repositories/Currency/CurrencyRepositoryInterface.php
@@ -54,6 +54,15 @@ interface CurrencyRepositoryInterface
      */
     public function currencyInUse(TransactionCurrency $currency): bool;
 
+    /**
+     * Currency is in use where exactly.
+     *
+     * @param TransactionCurrency $currency
+     *
+     * @return string|null
+     */
+    public function currencyInUseAt(TransactionCurrency $currency): ?string;
+
     /**
      * @param TransactionCurrency $currency
      *
diff --git a/resources/lang/en_US/firefly.php b/resources/lang/en_US/firefly.php
index 8ec753a2b6..a0480eed8c 100644
--- a/resources/lang/en_US/firefly.php
+++ b/resources/lang/en_US/firefly.php
@@ -629,22 +629,31 @@ return [
     'create_new_asset'                        => 'Create new asset account',
     'create_new_expense'                      => 'Create new expense account',
     'create_new_revenue'                      => 'Create new revenue account',
-    'create_new_piggy_bank'                   => 'Create new piggy bank',
-    'create_new_bill'                         => 'Create new bill',
+    'create_new_piggy_bank'                     => 'Create new piggy bank',
+    'create_new_bill'                           => 'Create new bill',
 
     // currencies:
-    'create_currency'                         => 'Create a new currency',
-    'store_currency'                          => 'Store new currency',
-    'update_currency'                         => 'Update currency',
-    'new_default_currency'                    => ':name is now the default currency.',
-    'cannot_delete_currency'                  => 'Cannot delete :name because it is still in use.',
-    'cannot_disable_currency'                 => 'Cannot disable :name because it is still in use.',
-    'deleted_currency'                        => 'Currency :name deleted',
-    'created_currency'                        => 'Currency :name created',
-    'could_not_store_currency'                => 'Could not store the new currency.',
-    'updated_currency'                        => 'Currency :name updated',
-    'ask_site_owner'                          => 'Please ask :owner to add, remove or edit currencies.',
-    'currencies_intro'                        => 'Firefly III supports various currencies which you can set and enable here.',
+    'create_currency'                           => 'Create a new currency',
+    'store_currency'                            => 'Store new currency',
+    'update_currency'                           => 'Update currency',
+    'new_default_currency'                      => ':name is now the default currency.',
+    'cannot_delete_currency'                    => 'Cannot delete :name because it is still in use.',
+    'cannot_disable_currency_journals'          => 'Cannot disable :name because transactions are still using it.',
+    'cannot_disable_currency_last_left'         => 'Cannot disable :name because it is the last enabled currency.',
+    'cannot_disable_currency_account_meta'      => 'Cannot disable :name because it is used in asset accounts.',
+    'cannot_disable_currency_bills'             => 'Cannot disable :name because it is used in bills.',
+    'cannot_disable_currency_recurring'         => 'Cannot disable :name because it is used in recurring transactions.',
+    'cannot_disable_currency_available_budgets' => 'Cannot disable :name because it is used in available budgets.',
+    'cannot_disable_currency_budget_limits'     => 'Cannot disable :name because it is used in budget limits.',
+    'cannot_disable_currency_current_default'   => 'Cannot disable :name because it is the current default currency.',
+    'cannot_disable_currency_system_fallback'   => 'Cannot disable :name because it is the system default currency.',
+    'disable_EUR_side_effects' => 'The Euro is the system\'s emergency fallback currency. Disabling it may have unintended side-effects and may void your warranty.',
+    'deleted_currency'                          => 'Currency :name deleted',
+    'created_currency'                          => 'Currency :name created',
+    'could_not_store_currency'                  => 'Could not store the new currency.',
+    'updated_currency'                          => 'Currency :name updated',
+    'ask_site_owner'                            => 'Please ask :owner to add, remove or edit currencies.',
+    'currencies_intro'                          => 'Firefly III supports various currencies which you can set and enable here.',
     'make_default_currency'                   => 'Make default',
     'default_currency'                        => 'default',
     'currency_is_disabled'                    => 'Disabled',