diff --git a/kmymoney/dialogs/investactivities.cpp b/kmymoney/dialogs/investactivities.cpp
--- a/kmymoney/dialogs/investactivities.cpp
+++ b/kmymoney/dialogs/investactivities.cpp
@@ -450,12 +450,22 @@
 
 bool Sell::isComplete(QString& reason) const
 {
+  Q_D(const Activity);
+
   auto rc = Activity::isComplete(reason);
-  rc &= haveAssetAccount();
   rc &= haveFees(true);
   rc &= haveInterest(true);
   rc &= haveShares();
   rc &= havePrice();
+
+  // allow a sell operation that reduces the number of shares
+  // to pay fees. This is to handle mutual fund account fees.
+  // There is no money transferred -- only a reduction in shares.
+  if (rc) {
+    if (!d->m_parent->totalAmount().isZero()) {
+      rc &= haveAssetAccount();
+    }
+  }
   return rc;
 }
 
@@ -511,13 +521,14 @@
       !createCategorySplits(t, interestAccountWidget, interestAmountWidget, MyMoneyMoney::MINUS_ONE, interestSplits, m_interestSplits))
     return false;
 
-  createAssetAccountSplit(assetAccountSplit, s0);
-
-  MyMoneyMoney total = sumSplits(s0, feeSplits, interestSplits);
-  assetAccountSplit.setValue(-total);
+  const auto total = sumSplits(s0, feeSplits, interestSplits);
+  if (!total.isZero()) {
+    createAssetAccountSplit(assetAccountSplit, s0);
+    assetAccountSplit.setValue(-total);
 
-  if (!d->m_parent->setupPrice(t, assetAccountSplit))
-    return false;
+    if (!d->m_parent->setupPrice(t, assetAccountSplit))
+      return false;
+  }
 
   return true;
 }
diff --git a/kmymoney/dialogs/investtransactioneditor.h b/kmymoney/dialogs/investtransactioneditor.h
--- a/kmymoney/dialogs/investtransactioneditor.h
+++ b/kmymoney/dialogs/investtransactioneditor.h
@@ -75,7 +75,7 @@
 
   bool fixTransactionCommodity(const MyMoneyAccount& /* account */) override;
 
-  void totalAmount(MyMoneyMoney& amount) const;
+  MyMoneyMoney totalAmount() const;
 
   bool setupPrice(const MyMoneyTransaction& t, MyMoneySplit& split);
 
diff --git a/kmymoney/dialogs/investtransactioneditor.cpp b/kmymoney/dialogs/investtransactioneditor.cpp
--- a/kmymoney/dialogs/investtransactioneditor.cpp
+++ b/kmymoney/dialogs/investtransactioneditor.cpp
@@ -868,17 +868,19 @@
 }
 
 
-void InvestTransactionEditor::totalAmount(MyMoneyMoney& amount) const
+MyMoneyMoney InvestTransactionEditor::totalAmount() const
 {
+  MyMoneyMoney amount;
+
   auto activityCombo = dynamic_cast<KMyMoneyActivityCombo*>(haveWidget("activity"));
   auto sharesEdit = dynamic_cast<KMyMoneyEdit*>(haveWidget("shares"));
   auto priceEdit = dynamic_cast<KMyMoneyEdit*>(haveWidget("price"));
   auto feesEdit = dynamic_cast<KMyMoneyEdit*>(haveWidget("fee-amount"));
   auto interestEdit = dynamic_cast<KMyMoneyEdit*>(haveWidget("interest-amount"));
 
   if (!activityCombo || !sharesEdit || !priceEdit ||
       !feesEdit || !interestEdit)
-    return;
+    return amount;
 
   if (priceMode() == eDialogs::PriceMode::PricePerTransaction)
     amount = priceEdit->value().abs();
@@ -911,17 +913,16 @@
     }
     amount += (interest * factor);
   }
+  return amount;
 }
 
 void InvestTransactionEditor::slotUpdateTotalAmount()
 {
   Q_D(InvestTransactionEditor);
   auto total = dynamic_cast<QLabel*>(haveWidget("total"));
 
   if (total && total->isVisible()) {
-    MyMoneyMoney amount;
-    totalAmount(amount);
-    total->setText(amount.convert(d->m_currency.smallestAccountFraction(), d->m_security.roundingMethod())
+    total->setText(totalAmount().convert(d->m_currency.smallestAccountFraction(), d->m_security.roundingMethod())
                    .formatMoney(d->m_currency.tradingSymbol(), MyMoneyMoney::denomToPrec(d->m_currency.smallestAccountFraction())));
   }
 }