diff --git a/src/views/checkout/CheckFormView.vue b/src/views/checkout/CheckFormView.vue
index 720c472..0b5fb68 100644
--- a/src/views/checkout/CheckFormView.vue
+++ b/src/views/checkout/CheckFormView.vue
@@ -8,7 +8,9 @@ import CurrencyInput from '@/components/ui/CurrencyInput.vue'
 import PersianDateInput from '@/components/ui/PersianDateInput.vue'
 import FormErrorBanner from '@/components/ui/FormErrorBanner.vue'
 import BaseButton from '@/components/ui/BaseButton.vue'
-import { parseFormattedNumber } from '@/utils/format'
+import IconCash from '@/components/icons/IconCash.vue'
+import IconCheckBook from '@/components/icons/IconCheckBook.vue'
+import { formatCurrency, formatNumber, parseFormattedNumber } from '@/utils/format'
 import {
   FORM_VALIDATION_SUMMARY,
   clearFieldError,
@@ -26,7 +28,7 @@ import { useRequirePricedOrder } from '@/composables/useRequirePricedOrder'
 const router = useRouter()
 const orderStore = useOrderStore()
 
-const { orderId } = useRequirePricedOrder()
+const { orderId, order } = useRequirePricedOrder()
 const isFull = computed(() => orderStore.draftCheckMode === 'full')
 
 const amount = ref('')
@@ -43,6 +45,40 @@ const backImage = ref('')
 const notes = ref('')
 const fieldErrors = ref<FieldErrors>({})
 const formError = ref('')
+const suggestedAmountApplied = ref(false)
+
+const invoiceAmount = computed(() => order.value?.finalAmount ?? 0)
+const previousChecksTotal = computed(() =>
+  orderStore.draftChecks.reduce((sum, check) => sum + check.amount, 0),
+)
+const currentCheckAmount = computed(() => parseFormattedNumber(amount.value) || 0)
+const remainingBeforeCurrent = computed(() =>
+  Math.max(0, invoiceAmount.value - previousChecksTotal.value),
+)
+const remainingAfterCurrent = computed(() =>
+  Math.max(0, invoiceAmount.value - previousChecksTotal.value - currentCheckAmount.value),
+)
+const isCovered = computed(
+  () =>
+    invoiceAmount.value > 0 &&
+    previousChecksTotal.value + currentCheckAmount.value >= invoiceAmount.value,
+)
+const isOverInvoice = computed(
+  () =>
+    invoiceAmount.value > 0 &&
+    previousChecksTotal.value + currentCheckAmount.value > invoiceAmount.value,
+)
+
+watch(
+  [invoiceAmount, remainingBeforeCurrent],
+  () => {
+    if (suggestedAmountApplied.value || amount.value) return
+    if (remainingBeforeCurrent.value <= 0) return
+    amount.value = String(remainingBeforeCurrent.value)
+    suggestedAmountApplied.value = true
+  },
+  { immediate: true },
+)
 
 watch(amount, () => {
   fieldErrors.value = clearFieldError(fieldErrors.value, 'amount')
@@ -80,6 +116,11 @@ async function handleImageUpload(event: Event, target: 'front' | 'back') {
   else backImage.value = base64
 }
 
+function fillRemainingAmount() {
+  if (remainingBeforeCurrent.value <= 0) return
+  amount.value = String(remainingBeforeCurrent.value)
+}
+
 function validateForm(): boolean {
   fieldErrors.value = {}
   formError.value = ''
@@ -157,6 +198,7 @@ function resetForm() {
   notes.value = ''
   fieldErrors.value = {}
   formError.value = ''
+  suggestedAmountApplied.value = false
 }
 </script>
 
@@ -171,6 +213,72 @@ function resetForm() {
     <div class="page__scroll checkout-page__scroll">
       <FormErrorBanner :message="formError" />
 
+      <div
+        v-if="invoiceAmount > 0"
+        class="check-balance mb-4 rounded-[var(--radius-md)] border border-[var(--color-border)] bg-[var(--color-surface)] p-4"
+        :class="{
+          'check-balance--ok': isCovered && !isOverInvoice,
+          'check-balance--warn': isOverInvoice,
+        }"
+      >
+        <div class="mb-3 flex items-start gap-3">
+          <span
+            class="flex h-10 w-10 shrink-0 items-center justify-center rounded-full bg-[var(--color-primary-soft)] text-[var(--color-primary)]"
+            aria-hidden="true"
+          >
+            <IconCash :size="22" />
+          </span>
+          <div class="min-w-0 flex-1">
+            <p class="m-0 text-sm font-semibold text-[var(--color-text)]">مانده فاکتور</p>
+            <p class="m-0 mt-1 text-xs leading-relaxed text-[var(--color-text-muted)]">
+              با هر چک، مبلغ باقی‌مانده به‌روز می‌شود تا پوشش کامل فاکتور را از دست ندهید.
+            </p>
+          </div>
+        </div>
+
+        <div class="flex flex-col gap-2">
+          <div class="flex items-center justify-between gap-3 text-sm">
+            <span class="text-[var(--color-text-muted)]">مبلغ فاکتور</span>
+            <strong class="font-tabular text-[var(--color-text)]">{{ formatCurrency(invoiceAmount) }}</strong>
+          </div>
+          <div class="flex items-center justify-between gap-3 text-sm">
+            <span class="inline-flex items-center gap-1.5 text-[var(--color-text-muted)]">
+              <IconCheckBook :size="14" />
+              چک‌های ثبت‌شده
+              <span v-if="orderStore.draftChecks.length" class="text-xs">
+                ({{ formatNumber(orderStore.draftChecks.length) }})
+              </span>
+            </span>
+            <strong class="font-tabular text-[var(--color-text)]">
+              {{ formatCurrency(previousChecksTotal) }}
+            </strong>
+          </div>
+          <div
+            class="mt-1 flex items-center justify-between gap-3 border-t border-[var(--color-border)] pt-3"
+          >
+            <span class="text-sm font-semibold text-[var(--color-text)]">باقی‌مانده</span>
+            <strong
+              class="font-tabular text-base"
+              :class="
+                isCovered && !isOverInvoice
+                  ? 'text-[var(--color-success)]'
+                  : isOverInvoice
+                    ? 'text-[var(--color-danger)]'
+                    : 'text-[var(--color-primary)]'
+              "
+            >
+              {{
+                isOverInvoice
+                  ? `${formatCurrency(previousChecksTotal + currentCheckAmount - invoiceAmount)} بیش از فاکتور`
+                  : isCovered
+                    ? 'پوشش کامل شد'
+                    : formatCurrency(remainingAfterCurrent)
+              }}
+            </strong>
+          </div>
+        </div>
+      </div>
+
       <div class="steps">
         <span class="step active">۱. اطلاعات چک</span>
         <span class="step">۲. چک بعدی</span>
@@ -184,6 +292,14 @@ function resetForm() {
           placeholder="مبلغ"
           :error="fieldErrors.amount"
         />
+        <button
+          v-if="remainingBeforeCurrent > 0 && currentCheckAmount !== remainingBeforeCurrent"
+          type="button"
+          class="check-fill-remaining mb-3 text-sm font-medium text-[var(--color-primary)]"
+          @click="fillRemainingAmount"
+        >
+          پر کردن با باقی‌مانده ({{ formatCurrency(remainingBeforeCurrent) }})
+        </button>
         <PersianDateInput v-model="dueDate" label="تاریخ سررسید" :error="fieldErrors.dueDate" />
 
         <template v-if="isFull">
@@ -262,6 +378,32 @@ function resetForm() {
   padding-bottom: 24px;
 }
 
+.check-balance--ok {
+  border-color: color-mix(in srgb, var(--color-success) 35%, var(--color-border));
+  background: var(--color-success-soft);
+}
+
+.check-balance--warn {
+  border-color: color-mix(in srgb, var(--color-danger) 35%, var(--color-border));
+  background: var(--color-danger-light);
+}
+
+.check-fill-remaining {
+  background: transparent;
+  border: 0;
+  padding: 0;
+  cursor: pointer;
+  text-align: start;
+}
+
+.check-fill-remaining:hover {
+  text-decoration: underline;
+}
+
+.font-tabular {
+  font-variant-numeric: tabular-nums;
+}
+
 .steps {
   display: flex;
   gap: 8px;
diff --git a/src/views/checkout/CheckListView.vue b/src/views/checkout/CheckListView.vue
index f84e8de..24def36 100644
--- a/src/views/checkout/CheckListView.vue
+++ b/src/views/checkout/CheckListView.vue
@@ -60,10 +60,18 @@ const rass = computed(() => {
 
 const invoiceAmount = computed(() => order.value?.finalAmount ?? 0)
 
+const remainingAmount = computed(() =>
+  Math.max(0, invoiceAmount.value - rass.value.totalAmount),
+)
+
 const isAmountComplete = computed(
   () => invoiceAmount.value > 0 && rass.value.totalAmount >= invoiceAmount.value,
 )
 
+const isOverInvoice = computed(
+  () => invoiceAmount.value > 0 && rass.value.totalAmount > invoiceAmount.value,
+)
+
 const openMenuId = computed({
   get: () => (route.query.menu as string) ?? '',
   set: (id: string) => {
@@ -150,10 +158,33 @@ async function submitChecks() {
             <span class="summary-card__label">مبلغ فاکتور</span>
             <strong class="summary-card__value">{{ formatNumber(invoiceAmount) }}</strong>
             <span class="summary-card__unit">تومان</span>
-            <p v-if="isAmountComplete" class="summary-card__status">
+            <p v-if="isAmountComplete && !isOverInvoice" class="summary-card__status">
               <span class="summary-card__status-icon">✓</span>
               مبلغ کامل است
             </p>
+            <p v-else-if="isOverInvoice" class="summary-card__status summary-card__status--warn">
+              بیش از مبلغ فاکتور
+            </p>
+          </div>
+          <div
+            class="summary-card summary-card--remain"
+            :class="{
+              'summary-card--remain-ok': isAmountComplete && !isOverInvoice,
+              'summary-card--remain-warn': isOverInvoice,
+            }"
+          >
+            <span class="summary-card__label">باقی‌مانده</span>
+            <strong class="summary-card__value">
+              {{
+                isOverInvoice
+                  ? formatNumber(rass.totalAmount - invoiceAmount)
+                  : formatNumber(remainingAmount)
+              }}
+            </strong>
+            <span class="summary-card__unit">تومان</span>
+            <p v-if="!isAmountComplete" class="summary-card__hint">
+              هنوز باید چک ثبت کنید
+            </p>
           </div>
         </div>
 
@@ -282,6 +313,24 @@ async function submitChecks() {
           <span>مبلغ فاکتور</span>
           <strong>{{ formatNumber(invoiceAmount) }} تومان</strong>
         </div>
+        <div
+          class="desktop-summary-panel__row desktop-summary-panel__row--remain"
+          :class="{
+            'desktop-summary-panel__row--ok': isAmountComplete && !isOverInvoice,
+            'desktop-summary-panel__row--warn': isOverInvoice,
+          }"
+        >
+          <span>باقی‌مانده</span>
+          <strong>
+            {{
+              isOverInvoice
+                ? `${formatNumber(rass.totalAmount - invoiceAmount)} بیش از فاکتور`
+                : isAmountComplete
+                  ? 'پوشش کامل'
+                  : `${formatNumber(remainingAmount)} تومان`
+            }}
+          </strong>
+        </div>
         <div class="desktop-summary-panel__row">
           <span>رأس چک‌ها</span>
           <strong>{{ toPersianDigits(String(rass.rassDays)) }} روز</strong>
@@ -348,6 +397,18 @@ async function submitChecks() {
   gap: 10px;
 }
 
+.desktop-summary-panel__row--remain strong {
+  color: var(--color-primary);
+}
+
+.desktop-summary-panel__row--ok strong {
+  color: var(--color-success);
+}
+
+.desktop-summary-panel__row--warn strong {
+  color: var(--color-danger);
+}
+
 .check-list-page {
   flex: 1;
   display: flex;
@@ -428,6 +489,22 @@ async function submitChecks() {
   color: var(--color-text);
 }
 
+.summary-card--remain {
+  grid-column: 1 / -1;
+  border-color: color-mix(in srgb, var(--color-primary) 30%, var(--color-border));
+  background: var(--color-primary-soft);
+}
+
+.summary-card--remain-ok {
+  border-color: color-mix(in srgb, var(--color-success) 35%, var(--color-border));
+  background: var(--color-success-soft);
+}
+
+.summary-card--remain-warn {
+  border-color: color-mix(in srgb, var(--color-danger) 35%, var(--color-border));
+  background: var(--color-danger-light);
+}
+
 .summary-card__label {
   display: block;
   font-size: 0.75rem;
@@ -461,6 +538,17 @@ async function submitChecks() {
   color: var(--color-success);
 }
 
+.summary-card__status--warn {
+  color: var(--color-danger);
+}
+
+.summary-card__hint {
+  margin: 8px 0 0;
+  font-size: 0.6875rem;
+  font-weight: 500;
+  color: var(--color-primary);
+}
+
 .summary-card__status-icon {
   width: 16px;
   height: 16px;