diff --git a/library/include/mobilisis/tariff_carryover_settings.h b/library/include/mobilisis/tariff_carryover_settings.h
new file mode 100644
index 0000000..076caad
--- /dev/null
+++ b/library/include/mobilisis/tariff_carryover_settings.h
@@ -0,0 +1,61 @@
+#ifndef ATB_TARIFF_CARRYOVER_SETTINGS_H_INCLUDED
+#define ATB_TARIFF_CARRYOVER_SETTINGS_H_INCLUDED
+
+#include <QDebug>
+#include <QDateTime>
+
+#include <functional>
+
+struct ATBTariffCarryOverSettings {
+
+    // parking time limit not violated: return false, otherwise: return true.
+    using ParkingTimeLimitChecker = std::function<bool(ATBTariffCarryOverSettings const&,
+                                                       QDateTime const &endTime, int paymentOptionIndex)>;
+
+    int m_duration;
+    QTime m_start;
+    QTime m_end;
+    ParkingTimeLimitChecker m_parkingTimeLimitChecker;
+
+    QTime m_parking_time_limit;
+    QTime m_about_to_exceed_parking_time_limit;
+
+    explicit ATBTariffCarryOverSettings()
+      : m_duration(0)
+      , m_start(QTime())
+      , m_end(QTime())
+      , m_parkingTimeLimitChecker([](ATBTariffCarryOverSettings const&, QDateTime const &, int) { return false; })
+      , m_parking_time_limit(QTime())
+      , m_about_to_exceed_parking_time_limit(QTime()) {}
+
+    explicit ATBTariffCarryOverSettings(int duration, QTime const &start,
+                                        QTime const &end,
+                                        QTime const &parking_time_limit,
+                                        QTime const &about_to_exceed_parking_time_limit,
+                                        ParkingTimeLimitChecker parkingTimeLimitChecker)
+      : m_duration(duration)
+      , m_start(start)
+      , m_end(end)
+      , m_parkingTimeLimitChecker(std::move(parkingTimeLimitChecker))
+      , m_parking_time_limit(parking_time_limit)
+      , m_about_to_exceed_parking_time_limit(about_to_exceed_parking_time_limit) {
+    }
+
+    bool parkingTimeLimitExceeded(QDateTime const &endTime, int paymentOptionIndex) const {
+        return m_parkingTimeLimitChecker(*this, endTime, paymentOptionIndex);
+    }
+
+    friend QDebug operator<<(QDebug debug, ATBTariffCarryOverSettings const &co) {
+        QDebugStateSaver saver(debug);
+
+        debug.nospace()
+            << "                 duration: " << co.m_duration << "\n"
+            << "                    start: " << co.m_start.toString(Qt::ISODate) << "\n"
+            << "                      end: " << co.m_end.toString(Qt::ISODate) << "\n"
+            << "       parking_time_limit: " << co.m_parking_time_limit.toString(Qt::ISODate) << endl;
+
+        return debug;
+    }
+};
+
+#endif // ATB_TARIFF_CARRYOVER_SETTINGS_H_INCLUDED