diff --git a/esphome/components/time/posix_tz.cpp b/esphome/components/time/posix_tz.cpp
index 06140599a9..fb98edc577 100644
--- a/esphome/components/time/posix_tz.cpp
+++ b/esphome/components/time/posix_tz.cpp
@@ -364,10 +364,9 @@ bool parse_posix_tz(const char *tz_string, ParsedTimezone &result) {
 
   const char *p = tz_string;
 
-  // Initialize result
+  // Initialize result (dst_start/dst_end default to type=NONE, so has_dst() returns false)
   result.std_offset_seconds = 0;
   result.dst_offset_seconds = 0;
-  result.has_dst = false;
   result.dst_start = {};
   result.dst_end = {};
 
@@ -429,9 +428,7 @@ bool parse_posix_tz(const char *tz_string, ParsedTimezone &result) {
     return false;
   }
 
-  // Only set has_dst after successfully parsing both rules
-  result.has_dst = true;
-
+  // has_dst() now returns true since dst_start.type was set by parse_dst_rule
   return true;
 }
 
diff --git a/esphome/components/time/real_time_clock.cpp b/esphome/components/time/real_time_clock.cpp
index f518b35951..439436420f 100644
--- a/esphome/components/time/real_time_clock.cpp
+++ b/esphome/components/time/real_time_clock.cpp
@@ -29,7 +29,7 @@ void RealTimeClock::dump_config() {
   // POSIX offset is positive west, negate for conventional UTC+X display
   int std_h = -tz.std_offset_seconds / 3600;
   int std_m = (std::abs(tz.std_offset_seconds) % 3600) / 60;
-  if (tz.has_dst) {
+  if (tz.has_dst()) {
     int dst_h = -tz.dst_offset_seconds / 3600;
     int dst_m = (std::abs(tz.dst_offset_seconds) % 3600) / 60;
     ESP_LOGCONFIG(TAG, "Timezone: UTC%+d:%02d (DST UTC%+d:%02d)", std_h, std_m, dst_h, dst_m);