diff --git a/library/src/calculator_functions.cpp b/library/src/calculator_functions.cpp
index af11708..bb9afc1 100644
--- a/library/src/calculator_functions.cpp
+++ b/library/src/calculator_functions.cpp
@@ -2722,7 +2722,11 @@ uint32_t Calculator::GetPriceForTimeStep(Configuration *cfg, int timeStep, int p
 uint32_t Calculator::GetDurationForPrice(Configuration *cfg, int price) const {
     int const pop_id = cfg->getPaymentOptions().pop_id;
 
+    int const pop_accumulate_prices = cfg->getPaymentOptions(paymentOptionIndex).pop_accumulate_prices;
+
+    uint32_t new_price = 0;
     uint32_t duration = 0;
+    uint32_t duration_previous = 0;
 
     for (auto[itr, rangeEnd] = cfg->PaymentRate.equal_range(pop_id); itr != rangeEnd; ++itr)
     {
@@ -2738,6 +2742,15 @@ uint32_t Calculator::GetDurationForPrice(Configuration *cfg, int price) const {
         if (pra_price < price) {
             duration = durationUnit;
         }
+
+        if (pop_accumulate_prices) {
+            new_price += pra_price;
+            if (new_price <= price) {
+                duration_previous = durationUnit;
+            } else {
+               return duration_previous;
+            }
+        }
     }
 
     return duration;