diff --git a/src/option/payment/invoiceApplication.js b/src/option/payment/invoiceApplication.js
index fa5ed87..3696382 100644
--- a/src/option/payment/invoiceApplication.js
+++ b/src/option/payment/invoiceApplication.js
@@ -6,6 +6,7 @@ export const invoiceApplicationTableColumns = [
   { prop: 'issuerName', label: '开票方', minWidth: 150 },
   { prop: 'receiverName', label: '受票方', minWidth: 150 },
   { prop: 'invoiceAmount', label: '开票金额', minWidth: 130, money: true },
+  { prop: 'estimatedCost', label: '暂估成本', minWidth: 130, money: true },
   { prop: 'createUserName', label: '创建人', minWidth: 110 },
   { prop: 'createTime', label: '创建时间', minWidth: 170 },
   { prop: 'approvalStatusName', label: '状态', minWidth: 110, status: true },
diff --git a/src/views/payment/invoice-application-form.vue b/src/views/payment/invoice-application-form.vue
index b4897ea..83b8138 100644
--- a/src/views/payment/invoice-application-form.vue
+++ b/src/views/payment/invoice-application-form.vue
@@ -86,6 +86,27 @@
               />
             </el-form-item>
           </el-col>
+          <el-col :span="6">
+            <el-form-item label="项目利润率">
+              <el-input
+                :model-value="profitRatePercent"
+                :disabled="readonly"
+                placeholder="选结算单后自动带出，可修改"
+                @input="handleProfitRateInput"
+              >
+                <template #append>%</template>
+              </el-input>
+            </el-form-item>
+          </el-col>
+          <el-col :span="6">
+            <el-form-item label="暂估成本（不含税）">
+              <el-input
+                :model-value="estimatedCost > 0 ? formatMoney(estimatedCost) : ''"
+                disabled
+                placeholder="开票不含税金额合计×项目利润率"
+              />
+            </el-form-item>
+          </el-col>
           <el-col :span="6">
             <el-form-item label="部门邮箱" prop="departmentEmails">
               <el-select
@@ -326,12 +347,18 @@
           <el-table-column label="结算总金额" min-width="140" align="right">
             <template #default="{ row }">{{ formatMoney(row.settlementAmount) }}</template>
           </el-table-column>
+          <el-table-column label="历史累计开票金额" min-width="150" align="right">
+            <template #default="{ row }">{{ formatMoney(row.historyInvoicedAmount) }}</template>
+          </el-table-column>
+          <el-table-column label="本次开票金额" min-width="140" align="right">
+            <template #default="{ row }">{{ formatMoney(row.allocatedInvoiceAmount) }}</template>
+          </el-table-column>
+          <el-table-column label="剩余未开票金额" min-width="150" align="right">
+            <template #default="{ row }">{{ formatMoney(row.remainingUninvoicedAmount) }}</template>
+          </el-table-column>
           <el-table-column label="可开票金额" min-width="140" align="right">
             <template #default="{ row }">{{ formatMoney(row.availableInvoiceAmount) }}</template>
           </el-table-column>
-          <el-table-column label="分摊发票金额" min-width="140" align="right">
-            <template #default="{ row }">{{ formatMoney(row.allocatedInvoiceAmount) }}</template>
-          </el-table-column>
         </el-table>
       </section-card>
 
@@ -385,6 +412,10 @@
         </el-table>
       </section-card>
 
+      <section-card v-if="recordId" title="发票冲销明细">
+        <invoice-write-off-table biz-type="invoice_apply" :biz-id="recordId" />
+      </section-card>
+
       <section-card title="附件信息">
         <vehicle-attachment-table v-model="form.attachments" :readonly="readonly" />
       </section-card>
@@ -491,6 +522,7 @@ import { getList as getReceivablePayableDetailList } from '@/api/settlement/rece
 import { getDictionary } from '@/api/system/dictbiz';
 import { invoiceApplicationDetailColumns } from '@/option/payment/invoiceApplication';
 import VehicleAttachmentTable from '@/components/vehicle-attachment-table/main.vue';
+import InvoiceWriteOffTable from '@/components/invoice-write-off-table/main.vue';
 import { getMkPublicDetail } from '@/api/mk-process';
 import { loadMkEnabled, submitMkApprovalFlow } from '@/utils/mk-approval';
 
@@ -538,12 +570,15 @@ const emptyForm = () => ({
   sheets: [emptySheet()],
   attachments: [],
   remark: '',
+  // 项目利润率（小数，如0.04表示4%；保存时后端快照并重算暂估成本）
+  profitRate: null,
 });
 
 export default {
   name: 'InvoiceApplicationForm',
   components: {
     VehicleAttachmentTable,
+    InvoiceWriteOffTable,
   },
   data() {
     return {
@@ -621,6 +656,24 @@ export default {
         0
       );
     },
+    // 项目利润率百分数展示/输入（后端存小数：0.04 ↔ 4）
+    profitRatePercent() {
+      const rate = Number(this.form.profitRate);
+      if (!Number.isFinite(rate) || rate <= 0) return '';
+      return String(Math.round(rate * 10000) / 100);
+    },
+    // 暂估成本 = 开票不含税金额合计 × 项目利润率（实时计算，后端保存时重算覆盖）
+    estimatedCost() {
+      const rate = Number(this.form.profitRate);
+      if (!Number.isFinite(rate) || rate <= 0) return 0;
+      const amountNoTaxTotal = this.form.sheets.reduce(
+        (sheetTotal, sheet) =>
+          sheetTotal +
+          sheet.lines.reduce((lineTotal, line) => lineTotal + Number(line.amountNoTax || 0), 0),
+        0
+      );
+      return amountNoTaxTotal * rate;
+    },
     detailColumns() {
       return [...this.detailBaseColumns, ...this.feeItemColumns];
     },
@@ -732,6 +785,13 @@ export default {
         this.transportTypeOptions.find(item => String(item.value) === String(value))?.label || value
       );
     },
+    // 项目利润率输入（百分数），转小数存储：4 → 0.04
+    handleProfitRateInput(value) {
+      let normalized = String(value || '').replace(/[^\d.]/g, '');
+      normalized = normalized.replace(/(\..*)\./g, '$1');
+      const percent = Number(normalized);
+      this.form.profitRate = Number.isFinite(percent) && percent > 0 ? percent / 100 : null;
+    },
     invoiceItemNames(categoryName) {
       return this.invoiceItems.filter(item => item.categoryName === categoryName);
     },
@@ -1173,6 +1233,7 @@ export default {
         contactName: this.form.contactName,
         contactPhone: this.form.contactPhone,
         email: this.form.email,
+        profitRate: Number(this.form.profitRate) > 0 ? Number(this.form.profitRate) : null,
         attachmentsJson: JSON.stringify(this.form.attachments || []),
         remark: this.form.remark,
         settlements: this.form.settlements.map(item => ({