diff --git a/service/src/main/kotlin/com/sangdol/roomescape/payment/business/event/PaymentEvent.kt b/service/src/main/kotlin/com/sangdol/roomescape/payment/business/event/PaymentEvent.kt
new file mode 100644
index 00000000..d8db4678
--- /dev/null
+++ b/service/src/main/kotlin/com/sangdol/roomescape/payment/business/event/PaymentEvent.kt
@@ -0,0 +1,22 @@
+package com.sangdol.roomescape.payment.business.event
+
+import com.sangdol.roomescape.payment.business.domain.PaymentDetail
+import com.sangdol.roomescape.payment.business.domain.PaymentMethod
+import com.sangdol.roomescape.payment.business.domain.PaymentStatus
+import com.sangdol.roomescape.payment.business.domain.PaymentType
+import java.time.Instant
+
+class PaymentEvent(
+    val reservationId: Long,
+    val paymentKey: String,
+    val orderId: String,
+    val type: PaymentType,
+    val status: PaymentStatus,
+    val totalAmount: Int,
+    val vat: Int,
+    val suppliedAmount: Int,
+    val method: PaymentMethod,
+    val requestedAt: Instant,
+    val approvedAt: Instant,
+    val detail: PaymentDetail
+)
diff --git a/service/src/main/kotlin/com/sangdol/roomescape/payment/mapper/PaymentEventMappingExtensions.kt b/service/src/main/kotlin/com/sangdol/roomescape/payment/mapper/PaymentEventMappingExtensions.kt
new file mode 100644
index 00000000..c25c8cc2
--- /dev/null
+++ b/service/src/main/kotlin/com/sangdol/roomescape/payment/mapper/PaymentEventMappingExtensions.kt
@@ -0,0 +1,53 @@
+package com.sangdol.roomescape.payment.mapper
+
+import com.sangdol.roomescape.payment.business.domain.*
+import com.sangdol.roomescape.payment.business.event.PaymentEvent
+import com.sangdol.roomescape.payment.exception.PaymentErrorCode
+import com.sangdol.roomescape.payment.exception.PaymentException
+import com.sangdol.roomescape.payment.infrastructure.persistence.PaymentDetailEntity
+import com.sangdol.roomescape.payment.infrastructure.persistence.PaymentEntity
+
+fun PaymentEvent.toEntity(id: Long) = PaymentEntity(
+    id = id,
+    reservationId = this.reservationId,
+    paymentKey = this.paymentKey,
+    orderId = this.orderId,
+    totalAmount = this.totalAmount,
+    requestedAt = this.requestedAt,
+    approvedAt = this.approvedAt,
+    type = this.type,
+    method = this.method,
+    status = this.status
+)
+
+fun PaymentEvent.toDetailEntity(id: Long, paymentId: Long): PaymentDetailEntity {
+    val suppliedAmount = this.suppliedAmount
+    val vat = this.vat
+
+    return when (this.method) {
+        PaymentMethod.TRANSFER -> {
+            (this.detail as? BankTransferPaymentDetail)
+                ?.toEntity(id, paymentId, suppliedAmount, vat)
+                ?: throw PaymentException(PaymentErrorCode.PAYMENT_UNEXPECTED_ERROR)
+        }
+
+        PaymentMethod.EASY_PAY -> {
+            when (this.detail) {
+                is EasypayCardPaymentDetail -> { this.detail.toEntity(id, paymentId, suppliedAmount, vat) }
+                is EasypayPrepaidPaymentDetail -> { this.detail.toEntity(id, paymentId, suppliedAmount, vat) }
+
+                else -> {
+                    throw PaymentException(PaymentErrorCode.PAYMENT_UNEXPECTED_ERROR)
+                }
+            }
+        }
+
+        PaymentMethod.CARD -> {
+            (this.detail as? CardPaymentDetail)
+                ?.toEntity(id, paymentId, suppliedAmount, vat)
+                ?: throw PaymentException(PaymentErrorCode.PAYMENT_UNEXPECTED_ERROR)
+        }
+
+        else -> throw PaymentException(PaymentErrorCode.NOT_SUPPORTED_PAYMENT_TYPE)
+    }
+}