diff --git a/library/src/calculator_functions.cpp b/library/src/calculator_functions.cpp
index 8df1cf7..064c6e0 100644
--- a/library/src/calculator_functions.cpp
+++ b/library/src/calculator_functions.cpp
@@ -836,3 +836,82 @@ uint32_t Calculator::GetDurationForPrice(Configuration *cfg, int price) const {
 
     return duration;
 }
+
+std::optional<struct price_t>
+Calculator::GetDailyTicketPrice(Configuration* cfg,
+                                QDateTime const &startDatetime,
+                                QDateTime &endTime,
+                                PERMIT_TYPE permitType) {
+    struct price_t price;
+    std::optional<struct price_t> value;
+
+    std::optional<ATBWeekDaysWorktime> workTime =
+        cfg->getWeekDayWorkTime(startDatetime.time(),
+                                (Qt::DayOfWeek)startDatetime.date().dayOfWeek());
+    if (workTime) {
+        ATBWeekDaysWorktime const &wt = workTime.value();
+        endTime = startDatetime;
+        endTime.setTime(QTime::fromString(wt.pwd_time_to.c_str(), Qt::ISODate));
+
+        std::optional<QVector<ATBDailyTicket>> dailyTickets = cfg->getDailyTicketsForAllKeys();
+        if (dailyTickets) {
+            QVector<ATBDailyTicket> const tickets = dailyTickets.value();
+
+            switch (permitType) {
+                case PERMIT_TYPE::DAY_TICKET_ADULT: {
+                    std::optional<ATBCustomer> c = cfg->getCustomerForType(ATBCustomer::CustomerType::ADULT);
+                    if (c) {
+                        for (QVector<ATBDailyTicket>::size_type i=0; i<tickets.size(); ++i) {
+                            if (tickets[i].daily_ticket_clearance_customer_ids.contains(c.value().cust_id)) {
+                                int priceId = tickets[i].daily_ticket_price_id;
+                                std::optional<QVector<ATBPaymentRate>> const &paymentRates = cfg->getPaymentRateForKey(priceId);
+                                if (paymentRates) {
+                                    QVector<ATBPaymentRate> const &pr = paymentRates.value();
+                                    if (pr.size() > 0) {
+                                        price.netto = pr.at(0).pra_price;
+                                        value.value_or(price);
+                                    }
+                                }
+                            }
+                        }
+                    }
+                } break;
+                case PERMIT_TYPE::DAY_TICKET_TEEN: {
+                    std::optional<ATBCustomer> c = cfg->getCustomerForType(ATBCustomer::CustomerType::TEEN);
+                    if (c) {
+                        for (QVector<ATBDailyTicket>::size_type i=0; i<tickets.size(); ++i) {
+                            if (tickets[i].daily_ticket_clearance_customer_ids.contains(c.value().cust_id)) {
+                                int priceId = tickets[i].daily_ticket_price_id;
+                                std::optional<QVector<ATBPaymentRate>> const &paymentRates = cfg->getPaymentRateForKey(priceId);
+                                if (paymentRates) {
+                                    QVector<ATBPaymentRate> const &pr = paymentRates.value();
+                                    if (pr.size() > 0) {
+                                        price.netto = pr.at(0).pra_price;
+                                        value.value_or(price);
+                                    }
+                                }
+                            }
+                        }
+                    }
+                } break;
+                case PERMIT_TYPE::DAY_TICKET_CHILD: {
+                }
+                // [[fallthrough]];
+                case PERMIT_TYPE::SHORT_TERM_PARKING: {
+                }
+                // [[fallthrough]];
+                case PERMIT_TYPE::DAY_TICKET: {
+                }
+                // [[fallthrough]];
+                case PERMIT_TYPE::SZEGED_START:
+                    // [[fallthrough]];
+                case PERMIT_TYPE::SZEGED_STOP:
+                    // [[fallthrough]];
+                case PERMIT_TYPE::INVALID:
+                    break;
+            }
+        }
+    }
+
+    return value;
+}