diff --git a/financer-server/src/main/java/de/financer/config/FinancerConfig.java b/financer-server/src/main/java/de/financer/config/FinancerConfig.java
index 3e8a5f6..55fd74b 100644
--- a/financer-server/src/main/java/de/financer/config/FinancerConfig.java
+++ b/financer-server/src/main/java/de/financer/config/FinancerConfig.java
@@ -21,6 +21,7 @@ public class FinancerConfig {
     private String dateFormat;
     private Collection<String> mailRecipients;
     private String fromAddress;
+    private Integer monthPeriodStartDay;
 
     /**
      * @return the raw country code, mostly an uppercase ISO 3166 2-letter code
@@ -109,4 +110,32 @@ public class FinancerConfig {
     public void setFromAddress(String fromAddress) {
         this.fromAddress = fromAddress;
     }
+
+    /**
+     * The day of month that indicates a start of an expense period. Valid values range from 1-28. There is no special
+     * handling for months with more days.
+     * If the value is 15 for example an expense period is always from the 15th of the current month to the 15th of the
+     * next month:
+     * <ul>
+     *     <li>15.01.2019 - 15.02.2019</li>
+     *     <li>15.02.2019 - 15.03.2019</li>
+     *     <li>...</li>
+     * </ul>
+     *
+     * @return the day of month indicating the start of an expense period
+     */
+    public Integer getMonthPeriodStartDay() {
+        return monthPeriodStartDay;
+    }
+
+    public void setMonthPeriodStartDay(Integer monthPeriodStartDay) {
+        if (monthPeriodStartDay == null) {
+            throw new IllegalArgumentException("Parameter 'financer.monthPeriodStartDay' is not set!");
+        }
+        else if (monthPeriodStartDay < 1 || monthPeriodStartDay > 28) {
+            throw new IllegalArgumentException("Parameter 'financer.monthPeriodStartDay' is out of range! Valid range from 1-28");
+        }
+
+        this.monthPeriodStartDay = monthPeriodStartDay;
+    }
 }
diff --git a/financer-server/src/main/java/de/financer/controller/TransactionController.java b/financer-server/src/main/java/de/financer/controller/TransactionController.java
index 71de55a..7e4503e 100644
--- a/financer-server/src/main/java/de/financer/controller/TransactionController.java
+++ b/financer-server/src/main/java/de/financer/controller/TransactionController.java
@@ -79,4 +79,19 @@ public class TransactionController {
 
         return responseReason.toResponseEntity();
     }
+
+    @RequestMapping("getExpensesCurrentPeriod")
+    public Long getExpensesCurrentPeriod() {
+        if (LOGGER.isDebugEnabled()) {
+            LOGGER.debug("/transactions/getExpensesCurrentPeriod called");
+        }
+
+        final Long response = this.transactionService.getExpensesCurrentPeriod();
+
+        if (LOGGER.isDebugEnabled()) {
+            LOGGER.debug(String.format("/transactions/getExpensesCurrentPeriod returns with %s", response));
+        }
+
+        return response;
+    }
 }
diff --git a/financer-server/src/main/java/de/financer/dba/TransactionRepository.java b/financer-server/src/main/java/de/financer/dba/TransactionRepository.java
index f62e74c..04ac1e6 100644
--- a/financer-server/src/main/java/de/financer/dba/TransactionRepository.java
+++ b/financer-server/src/main/java/de/financer/dba/TransactionRepository.java
@@ -1,12 +1,19 @@
 package de.financer.dba;
 
 import de.financer.model.Account;
+import de.financer.model.AccountType;
 import de.financer.model.Transaction;
+import org.springframework.data.jpa.repository.Query;
 import org.springframework.data.repository.CrudRepository;
 import org.springframework.transaction.annotation.Propagation;
 import org.springframework.transaction.annotation.Transactional;
 
+import java.time.LocalDate;
+
 @Transactional(propagation = Propagation.REQUIRED)
 public interface TransactionRepository extends CrudRepository<Transaction, Long> {
     Iterable<Transaction> findTransactionsByFromAccountOrToAccount(Account fromAccount, Account toAccount);
+
+    @Query("SELECT SUM(t.amount) FROM Transaction t JOIN t.toAccount a WHERE t.date BETWEEN :periodStart AND :periodEnd AND a.type IN :expenseTypes")
+    Long getExpensesCurrentPeriod(LocalDate periodStart, LocalDate periodEnd, AccountType... expenseTypes);
 }
diff --git a/financer-server/src/main/java/de/financer/service/TransactionService.java b/financer-server/src/main/java/de/financer/service/TransactionService.java
index 1cfa3cc..3f875bb 100644
--- a/financer-server/src/main/java/de/financer/service/TransactionService.java
+++ b/financer-server/src/main/java/de/financer/service/TransactionService.java
@@ -66,8 +66,8 @@ public class TransactionService {
 
     @Transactional(propagation = Propagation.REQUIRED)
     public ResponseReason createTransaction(String fromAccountKey, String toAccountKey, Long amount, String date,
-                                            String description)
-    {
+                                            String description
+    ) {
         return this.createTransaction(fromAccountKey, toAccountKey, amount, date, description, null);
     }
 
@@ -95,8 +95,7 @@ public class TransactionService {
             if (AccountType.START.equals(fromAccount.getType()) && AccountType.LIABILITY.equals(toAccount.getType())) {
                 toAccount.setCurrentBalance(toAccount.getCurrentBalance() + (this.ruleService
                         .getMultiplierToAccount(toAccount) * amount * -1));
-            }
-            else {
+            } else {
                 toAccount.setCurrentBalance(toAccount.getCurrentBalance() + (this.ruleService
                         .getMultiplierToAccount(toAccount) * amount));
             }
@@ -216,8 +215,7 @@ public class TransactionService {
 
             this.accountService.saveAccount(fromAccount);
             this.accountService.saveAccount(toAccount);
-        }
-        catch (Exception e) {
+        } catch (Exception e) {
             LOGGER.error("Could not delete transaction!", e);
 
             response = ResponseReason.UNKNOWN_ERROR;
@@ -225,4 +223,14 @@ public class TransactionService {
 
         return response;
     }
+
+    public Long getExpensesCurrentPeriod() {
+        final LocalDate periodStart = LocalDate.now().withDayOfMonth(this.financerConfig.getMonthPeriodStartDay());
+        final LocalDate periodEnd = periodStart.plusMonths(1);
+
+        final Long expensesCurrentPeriod = this.transactionRepository
+                .getExpensesCurrentPeriod(periodStart, periodEnd, AccountType.EXPENSE, AccountType.LIABILITY);
+
+        return Optional.ofNullable(expensesCurrentPeriod).orElse(Long.valueOf(0l));
+    }
 }
diff --git a/financer-server/src/main/resources/config/application.properties b/financer-server/src/main/resources/config/application.properties
index bc847d2..740c91d 100644
--- a/financer-server/src/main/resources/config/application.properties
+++ b/financer-server/src/main/resources/config/application.properties
@@ -46,4 +46,7 @@ spring.mail.host=localhost
 
 # Disable JMX as we don't need it and it blocks parallel deployment on Tomcat
 # because the connection pool cannot shutdown properly
-spring.jmx.enabled=false
\ No newline at end of file
+spring.jmx.enabled=false
+
+# The day of month indicating the start of an expense period. Valid values range from 1-28
+financer.monthPeriodStartDay=15
\ No newline at end of file
diff --git a/financer-web-client/src/main/java/de/financer/config/FinancerConfig.java b/financer-web-client/src/main/java/de/financer/config/FinancerConfig.java
index 26438a0..0648ef1 100644
--- a/financer-web-client/src/main/java/de/financer/config/FinancerConfig.java
+++ b/financer-web-client/src/main/java/de/financer/config/FinancerConfig.java
@@ -13,6 +13,7 @@ public class FinancerConfig {
     private String serverUrl;
     private String dateFormat;
     private String version;
+    private Integer monthPeriodStartDay;
 
     public String getServerUrl() {
         return serverUrl;
@@ -37,4 +38,20 @@ public class FinancerConfig {
     public void setVersion(String version) {
         this.version = version;
     }
+
+    // The same property exists on the server, look there for documentation
+    public Integer getMonthPeriodStartDay() {
+        return monthPeriodStartDay;
+    }
+
+    public void setMonthPeriodStartDay(Integer monthPeriodStartDay) {
+        if (monthPeriodStartDay == null) {
+            throw new IllegalArgumentException("Parameter 'financer.monthPeriodStartDay' is not set!");
+        }
+        else if (monthPeriodStartDay < 1 || monthPeriodStartDay > 28) {
+            throw new IllegalArgumentException("Parameter 'financer.monthPeriodStartDay' is out of range! Valid range from 1-28");
+        }
+
+        this.monthPeriodStartDay = monthPeriodStartDay;
+    }
 }
diff --git a/financer-web-client/src/main/java/de/financer/controller/AccountController.java b/financer-web-client/src/main/java/de/financer/controller/AccountController.java
index fb4971e..f039b85 100644
--- a/financer-web-client/src/main/java/de/financer/controller/AccountController.java
+++ b/financer-web-client/src/main/java/de/financer/controller/AccountController.java
@@ -18,6 +18,7 @@ import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.util.UriComponentsBuilder;
 
+import java.time.LocalDate;
 import java.util.List;
 
 @Controller
@@ -33,12 +34,18 @@ public class AccountController {
         final ResponseEntity<Iterable<RecurringTransaction>> rtAllActRes = new GetAllActiveRecurringTransactionsTemplate()
                 .exchange(this.financerConfig);
         final ResponseEntity<Long> currentAssets = new GetCurrentAssetsTemplate().exchange(this.financerConfig);
+        final ResponseEntity<Long> currentExpenses = new GetExpensesCurrentPeriodTemplate().exchange(this.financerConfig);
         final boolean showClosedBoolean = BooleanUtils.toBoolean(showClosed);
+        final LocalDate periodStart = LocalDate.now().withDayOfMonth(this.financerConfig.getMonthPeriodStartDay());
+        final LocalDate periodEnd = periodStart.plusMonths(1);
 
         model.addAttribute("accounts", ControllerUtils.filterAndSortAccounts(response.getBody(), showClosedBoolean));
         model.addAttribute("rtDueTodayCount", IterableUtils.size(rtDtRes.getBody()));
         model.addAttribute("rtAllActiveCount", IterableUtils.size(rtAllActRes.getBody()));
         model.addAttribute("currentAssets", currentAssets.getBody());
+        model.addAttribute("currentExpenses", currentExpenses.getBody());
+        model.addAttribute("periodStart", ControllerUtils.formatDate(this.financerConfig, periodStart));
+        model.addAttribute("periodEnd", ControllerUtils.formatDate(this.financerConfig, periodEnd));
         model.addAttribute("showClosed", showClosedBoolean);
         ControllerUtils.addVersionAttribute(model, this.financerConfig);
 
diff --git a/financer-web-client/src/main/java/de/financer/controller/Function.java b/financer-web-client/src/main/java/de/financer/controller/Function.java
index 009fe1f..d7d2a9f 100644
--- a/financer-web-client/src/main/java/de/financer/controller/Function.java
+++ b/financer-web-client/src/main/java/de/financer/controller/Function.java
@@ -15,6 +15,7 @@ public enum Function {
     TR_GET_ALL_FOR_ACCOUNT("transactions/getAllForAccount"),
     TR_CREATE_TRANSACTION("transactions/createTransaction"),
     TR_DELETE_TRANSACTION("transactions/deleteTransaction"),
+    TR_EXPENSES_CURRENT_PERIOD("transactions/getExpensesCurrentPeriod"),
 
     RT_GET_ALL("recurringTransactions/getAll"),
     RT_GET_ALL_ACTIVE("recurringTransactions/getAllActive"),
diff --git a/financer-web-client/src/main/java/de/financer/controller/template/GetExpensesCurrentPeriodTemplate.java b/financer-web-client/src/main/java/de/financer/controller/template/GetExpensesCurrentPeriodTemplate.java
new file mode 100644
index 0000000..3eed6ab
--- /dev/null
+++ b/financer-web-client/src/main/java/de/financer/controller/template/GetExpensesCurrentPeriodTemplate.java
@@ -0,0 +1,15 @@
+package de.financer.controller.template;
+
+import de.financer.config.FinancerConfig;
+import de.financer.controller.Function;
+import de.financer.util.ControllerUtils;
+import org.springframework.core.ParameterizedTypeReference;
+import org.springframework.http.ResponseEntity;
+
+public class GetExpensesCurrentPeriodTemplate {
+    public ResponseEntity<Long> exchange(FinancerConfig financerConfig) {
+        return new FinancerRestTemplate<Long>().exchange(ControllerUtils
+                .buildUrl(financerConfig, Function.TR_EXPENSES_CURRENT_PERIOD), new ParameterizedTypeReference<Long>() {
+        });
+    }
+}
diff --git a/financer-web-client/src/main/java/de/financer/util/ControllerUtils.java b/financer-web-client/src/main/java/de/financer/util/ControllerUtils.java
index d167e6c..099dc57 100644
--- a/financer-web-client/src/main/java/de/financer/util/ControllerUtils.java
+++ b/financer-web-client/src/main/java/de/financer/util/ControllerUtils.java
@@ -40,6 +40,10 @@ public class ControllerUtils {
                             .collect(Collectors.toList());
     }
 
+    public static String formatDate(FinancerConfig financerConfig, LocalDate date) {
+        return date.format(DateTimeFormatter.ofPattern(financerConfig.getDateFormat()));
+    }
+
     public static String formatDate(FinancerConfig financerConfig, String dateFromForm) {
         if (StringUtils.isEmpty(dateFromForm)) {
             return null;
diff --git a/financer-web-client/src/main/resources/config/application.properties b/financer-web-client/src/main/resources/config/application.properties
index 6db2d9f..b9c7014 100644
--- a/financer-web-client/src/main/resources/config/application.properties
+++ b/financer-web-client/src/main/resources/config/application.properties
@@ -27,4 +27,7 @@ financer.dateFormat=dd.MM.yyyy
 financer.version=@project.version@
 financer.serverUrl=http://localhost:8080/financer-server/
 
-spring.messages.basename=i18n/message
\ No newline at end of file
+spring.messages.basename=i18n/message
+
+# The day of month indicating the start of an expense period. Valid values range from 1-28
+financer.monthPeriodStartDay=15
\ No newline at end of file
diff --git a/financer-web-client/src/main/resources/i18n/message.properties b/financer-web-client/src/main/resources/i18n/message.properties
index 7eb5b38..9e3b18c 100644
--- a/financer-web-client/src/main/resources/i18n/message.properties
+++ b/financer-web-client/src/main/resources/i18n/message.properties
@@ -11,12 +11,14 @@ financer.account-overview.status=Status\:
 financer.account-overview.status.recurring-transaction-due-today=Recurring transactions due today\:
 financer.account-overview.status.recurring-transaction-active=Active recurring transactions\:
 financer.account-overview.status.current-assets=Current assets\:
+financer.account-overview.status.current-expenses=Expenses of the current period\:
 financer.account-overview.table-header.id=ID
 financer.account-overview.table-header.key=Account
 financer.account-overview.table-header.group=Group
 financer.account-overview.table-header.balance=Current Balance
 financer.account-overview.table-header.type=Type
 financer.account-overview.table-header.status=Status
+financer.account-overview.tooltip.status.current-expenses=Period from {0} to {1}
 
 financer.account-new.title=financer\: create new account
 financer.account-new.label.key=Key\:
diff --git a/financer-web-client/src/main/resources/i18n/message_de_DE.properties b/financer-web-client/src/main/resources/i18n/message_de_DE.properties
index 64b6eef..425644e 100644
--- a/financer-web-client/src/main/resources/i18n/message_de_DE.properties
+++ b/financer-web-client/src/main/resources/i18n/message_de_DE.properties
@@ -11,12 +11,14 @@ financer.account-overview.status=Status\:
 financer.account-overview.status.recurring-transaction-due-today=Wiederkehrende Buchungen heute f\u00E4llig\:
 financer.account-overview.status.recurring-transaction-active=Aktive wiederkehrende Buchungen\:
 financer.account-overview.status.current-assets=Umlaufverm\u00F6gen\:
+financer.account-overview.status.current-expenses=Ausgaben in der aktuellen Periode\:
 financer.account-overview.table-header.id=ID
 financer.account-overview.table-header.key=Konto
 financer.account-overview.table-header.group=Gruppe
 financer.account-overview.table-header.balance=Kontostand
 financer.account-overview.table-header.type=Typ
 financer.account-overview.table-header.status=Status
+financer.account-overview.tooltip.status.current-expenses=Periode ab {0} bis {1}
 
 financer.account-new.title=financer\: Neues Konto erstellen
 financer.account-new.label.key=Schl\u00FCssel\:
diff --git a/financer-web-client/src/main/resources/templates/account/accountOverview.html b/financer-web-client/src/main/resources/templates/account/accountOverview.html
index a633f54..2878d50 100644
--- a/financer-web-client/src/main/resources/templates/account/accountOverview.html
+++ b/financer-web-client/src/main/resources/templates/account/accountOverview.html
@@ -14,6 +14,10 @@
         <span th:text="#{financer.account-overview.status.current-assets}"/>
         <span th:text="${#numbers.formatDecimal(currentAssets/100D, 1, 'DEFAULT', 2, 'DEFAULT')}"/>
     </div>
+    <div th:title="#{'financer.account-overview.tooltip.status.current-expenses'(${periodStart}, ${periodEnd})}">
+        <span th:text="#{financer.account-overview.status.current-expenses}"/>
+        <span th:text="${#numbers.formatDecimal(currentExpenses/100D, 1, 'DEFAULT', 2, 'DEFAULT')}"/>
+    </div>
     <div>
         <span th:text="#{financer.account-overview.status.recurring-transaction-due-today}"/>
         <a th:href="@{/recurringTransactionDueToday}" th:text="${rtDueTodayCount}"/>