diff --git a/litellm-proxy-extras/litellm_proxy_extras/migrations/20260917000000_add_budget_temp_increase/migration.sql b/litellm-proxy-extras/litellm_proxy_extras/migrations/20260917000000_add_budget_temp_increase/migration.sql
new file mode 100644
index 00000000000..a1c431274a3
--- /dev/null
+++ b/litellm-proxy-extras/litellm_proxy_extras/migrations/20260917000000_add_budget_temp_increase/migration.sql
@@ -0,0 +1,5 @@
+-- AlterTable
+ALTER TABLE "LiteLLM_BudgetTable" ADD COLUMN IF NOT EXISTS "temp_budget_increase" DOUBLE PRECISION;
+
+-- AlterTable
+ALTER TABLE "LiteLLM_BudgetTable" ADD COLUMN IF NOT EXISTS "temp_budget_expiry" TIMESTAMP(3);
diff --git a/litellm-proxy-extras/litellm_proxy_extras/schema.prisma b/litellm-proxy-extras/litellm_proxy_extras/schema.prisma
index 139fb031671..547491e7dc6 100644
--- a/litellm-proxy-extras/litellm_proxy_extras/schema.prisma
+++ b/litellm-proxy-extras/litellm_proxy_extras/schema.prisma
@@ -22,6 +22,8 @@ model LiteLLM_BudgetTable {
   budget_duration String?
   budget_reset_at DateTime?
   allowed_models String[] @default([]) // per-member model scope; empty = inherit team models
+  temp_budget_increase Float?
+  temp_budget_expiry DateTime?
   created_at    DateTime               @default(now()) @map("created_at")
   created_by String
   updated_at    DateTime               @default(now()) @updatedAt @map("updated_at")
diff --git a/litellm/models/budget.py b/litellm/models/budget.py
index 125ce739d6a..ddc694743c4 100644
--- a/litellm/models/budget.py
+++ b/litellm/models/budget.py
@@ -30,6 +30,8 @@ class LiteLLM_BudgetTable(LiteLLMPydanticObjectBase):
     model_max_budget: dict | None = None
     budget_duration: str | None = None
     allowed_models: list[str] | None = None  # per-member model scope; empty = inherit team models
+    temp_budget_increase: float | None = None
+    temp_budget_expiry: datetime | None = None
 
     model_config = ConfigDict(protected_namespaces=())
 
diff --git a/litellm/proxy/_types.py b/litellm/proxy/_types.py
index 680c63393e8..df891bea5e0 100644
--- a/litellm/proxy/_types.py
+++ b/litellm/proxy/_types.py
@@ -4397,6 +4397,21 @@ class TeamMemberUpdateRequest(TeamMemberDeleteRequest):
         default=None,
         description="List of models this team member can access. Pass an empty list to remove per-member model restrictions.",
     )
+    temp_budget_increase: float | None = Field(
+        default=None,
+        description="Temporary additive budget increase for this team member, active until temp_budget_expiry",
+    )
+    temp_budget_expiry: datetime | None = Field(
+        default=None,
+        description="UTC expiry for temp_budget_increase",
+    )
+
+    @model_validator(mode="after")
+    def validate_temp_budget(self) -> "TeamMemberUpdateRequest":
+        if self.temp_budget_increase is not None or self.temp_budget_expiry is not None:
+            if self.temp_budget_increase is None or self.temp_budget_expiry is None:
+                raise ValueError("temp_budget_increase and temp_budget_expiry must be set together")
+        return self
 
 
 class TeamMemberUpdateResponse(MemberUpdateResponse):
@@ -4406,6 +4421,8 @@ class TeamMemberUpdateResponse(MemberUpdateResponse):
     rpm_limit: int | None = None
     budget_duration: str | None = None
     allowed_models: list[str] | None = None
+    temp_budget_increase: float | None = None
+    temp_budget_expiry: datetime | None = None
 
 
 class TeamModelAddRequest(BaseModel):
diff --git a/litellm/proxy/auth/auth_checks.py b/litellm/proxy/auth/auth_checks.py
index 3dd2e2d8eb2..fcb35fc41a6 100644
--- a/litellm/proxy/auth/auth_checks.py
+++ b/litellm/proxy/auth/auth_checks.py
@@ -14,6 +14,7 @@ import math
 import re
 import time
 from collections.abc import Awaitable, Callable, Iterator, Mapping, Sequence
+from datetime import datetime, timezone
 from types import MappingProxyType
 from typing import TYPE_CHECKING, Any, Final, Literal, Optional, Protocol, cast
 
@@ -5295,6 +5296,24 @@ async def _virtual_key_max_budget_alert_check(
                 )
 
 
+def _effective_team_member_budget(budget: LiteLLM_BudgetTable, now: datetime) -> float | None:
+    """Per-member cap including an unexpired temp_budget_increase. Naive
+    temp_budget_expiry values are treated as UTC (same convention as
+    _get_temp_budget_increase for keys)."""
+    if budget.max_budget is None:
+        return None
+    if budget.temp_budget_increase is None or budget.temp_budget_expiry is None:
+        return budget.max_budget
+    expiry: Final = (
+        budget.temp_budget_expiry.replace(tzinfo=timezone.utc)
+        if budget.temp_budget_expiry.tzinfo is None
+        else budget.temp_budget_expiry
+    )
+    if expiry <= now:
+        return budget.max_budget
+    return budget.max_budget + budget.temp_budget_increase
+
+
 async def _check_team_member_budget(
     team_object: LiteLLM_TeamTable | None,
     user_object: LiteLLM_UserTable | None,
@@ -5330,7 +5349,10 @@ async def _check_team_member_budget(
             and loaded_membership.litellm_budget_table is not None
             and loaded_membership.litellm_budget_table.max_budget is not None
         ):
-            team_member_budget = loaded_membership.litellm_budget_table.max_budget
+            team_member_budget = _effective_team_member_budget(
+                loaded_membership.litellm_budget_table,
+                now=get_utc_datetime(),
+            )
         else:
             default_budget_id: Final = (team_object.metadata or {}).get("team_member_budget_id")
             if isinstance(default_budget_id, str):
diff --git a/litellm/proxy/management_endpoints/team_endpoints.py b/litellm/proxy/management_endpoints/team_endpoints.py
index d16fc0fb40c..0eb0f59e09c 100644
--- a/litellm/proxy/management_endpoints/team_endpoints.py
+++ b/litellm/proxy/management_endpoints/team_endpoints.py
@@ -3692,6 +3692,8 @@ _MEMBER_BUDGET_PATCH_FIELDS: Final = {
     "rpm_limit": "rpm_limit",
     "budget_duration": "budget_duration",
     "allowed_models": "allowed_models",
+    "temp_budget_increase": "temp_budget_increase",
+    "temp_budget_expiry": "temp_budget_expiry",
 }
 
 
@@ -3862,6 +3864,8 @@ async def team_member_update(
         rpm_limit=data.rpm_limit,
         budget_duration=data.budget_duration,
         allowed_models=data.allowed_models,
+        temp_budget_increase=data.temp_budget_increase,
+        temp_budget_expiry=data.temp_budget_expiry,
     )
 
 
diff --git a/litellm/proxy/schema.prisma b/litellm/proxy/schema.prisma
index 139fb031671..547491e7dc6 100644
--- a/litellm/proxy/schema.prisma
+++ b/litellm/proxy/schema.prisma
@@ -22,6 +22,8 @@ model LiteLLM_BudgetTable {
   budget_duration String?
   budget_reset_at DateTime?
   allowed_models String[] @default([]) // per-member model scope; empty = inherit team models
+  temp_budget_increase Float?
+  temp_budget_expiry DateTime?
   created_at    DateTime               @default(now()) @map("created_at")
   created_by String
   updated_at    DateTime               @default(now()) @updatedAt @map("updated_at")
diff --git a/schema.prisma b/schema.prisma
index 139fb031671..547491e7dc6 100644
--- a/schema.prisma
+++ b/schema.prisma
@@ -22,6 +22,8 @@ model LiteLLM_BudgetTable {
   budget_duration String?
   budget_reset_at DateTime?
   allowed_models String[] @default([]) // per-member model scope; empty = inherit team models
+  temp_budget_increase Float?
+  temp_budget_expiry DateTime?
   created_at    DateTime               @default(now()) @map("created_at")
   created_by String
   updated_at    DateTime               @default(now()) @updatedAt @map("updated_at")
diff --git a/tests/test_litellm/proxy/auth/test_auth_checks.py b/tests/test_litellm/proxy/auth/test_auth_checks.py
index f480e096081..fbaa8c371f2 100644
--- a/tests/test_litellm/proxy/auth/test_auth_checks.py
+++ b/tests/test_litellm/proxy/auth/test_auth_checks.py
@@ -8461,3 +8461,121 @@ def test_route_skips_budget_checks_marks_only_spend_free_routes() -> None:
 def test_request_skips_budget_checks_extends_route_rule_with_zero_cost_models() -> None:
     assert request_skips_budget_checks(route="/v1/models", model=None, llm_router=None) is True
     assert request_skips_budget_checks(route="/v1/chat/completions", model=None, llm_router=None) is False
+
+
+def test_effective_team_member_budget_applies_unexpired_increase() -> None:
+    from litellm.proxy.auth.auth_checks import _effective_team_member_budget
+
+    budget: Final = LiteLLM_BudgetTable(
+        max_budget=100.0,
+        temp_budget_increase=50.0,
+        temp_budget_expiry=datetime(2100, 1, 1),
+    )
+    assert _effective_team_member_budget(budget, now=datetime(2026, 1, 1, tzinfo=timezone.utc)) == 150.0
+
+
+def test_effective_team_member_budget_ignores_expired_increase() -> None:
+    from litellm.proxy.auth.auth_checks import _effective_team_member_budget
+
+    budget: Final = LiteLLM_BudgetTable(
+        max_budget=100.0,
+        temp_budget_increase=50.0,
+        temp_budget_expiry=datetime(2020, 1, 1, tzinfo=timezone.utc),
+    )
+    assert _effective_team_member_budget(budget, now=datetime(2026, 1, 1, tzinfo=timezone.utc)) == 100.0
+
+
+def test_effective_team_member_budget_without_increase() -> None:
+    from litellm.proxy.auth.auth_checks import _effective_team_member_budget
+
+    now: Final = datetime(2026, 1, 1, tzinfo=timezone.utc)
+    assert _effective_team_member_budget(LiteLLM_BudgetTable(max_budget=100.0), now=now) == 100.0
+    assert _effective_team_member_budget(LiteLLM_BudgetTable(max_budget=None), now=now) is None
+
+
+@pytest.mark.asyncio
+async def test_team_member_budget_check_temp_budget_increase_extends_cap():
+    """Spend above max_budget but below max_budget + active temp increase
+    must not raise; once the increase expires the same spend must raise."""
+    from litellm.caching.dual_cache import DualCache
+    from litellm.proxy._types import LiteLLM_TeamMembership
+    from litellm.proxy.utils import ProxyLogging
+
+    team_object = LiteLLM_TeamTable(team_id="test-team", metadata={})
+    user_object = LiteLLM_UserTable(user_id="test-user")
+    valid_token = UserAPIKeyAuth(
+        token="test-token",
+        user_id="test-user",
+        team_id="test-team",
+    )
+
+    team_membership = LiteLLM_TeamMembership(
+        user_id="test-user",
+        team_id="test-team",
+        spend=0.0,
+        budget_id="budget-1",
+        litellm_budget_table=LiteLLM_BudgetTable(
+            max_budget=100.0,
+            temp_budget_increase=100.0,
+            temp_budget_expiry=datetime.now(timezone.utc) + timedelta(hours=1),
+        ),
+    )
+
+    proxy_logging_obj = ProxyLogging(user_api_key_cache=None)
+
+    prisma_client = MagicMock()
+    prisma_client.db.litellm_budgettable.find_unique = AsyncMock(return_value=None)
+
+    async def mock_get_current_spend(counter_key, fallback_spend, max_budget=None, **kwargs):
+        if counter_key == "spend:team_member:test-user:test-team":
+            return 150.0
+        return fallback_spend
+
+    # $150 spend is over the $100 cap but under the $200 temp-extended cap.
+    with (
+        patch("litellm.proxy.proxy_server.get_current_spend", mock_get_current_spend),
+        patch(
+            "litellm.proxy.auth.auth_checks.get_team_membership",
+            new_callable=AsyncMock,
+            return_value=team_membership,
+        ),
+    ):
+        await _check_team_member_budget(
+            team_object=team_object,
+            user_object=user_object,
+            valid_token=valid_token,
+            prisma_client=prisma_client,
+            user_api_key_cache=DualCache(),
+            proxy_logging_obj=proxy_logging_obj,
+        )
+
+    expired_membership = LiteLLM_TeamMembership(
+        user_id="test-user",
+        team_id="test-team",
+        spend=0.0,
+        budget_id="budget-1",
+        litellm_budget_table=LiteLLM_BudgetTable(
+            max_budget=100.0,
+            temp_budget_increase=100.0,
+            temp_budget_expiry=datetime.now(timezone.utc) - timedelta(hours=1),
+        ),
+    )
+    with (
+        patch("litellm.proxy.proxy_server.get_current_spend", mock_get_current_spend),
+        patch(
+            "litellm.proxy.auth.auth_checks.get_team_membership",
+            new_callable=AsyncMock,
+            return_value=expired_membership,
+        ),
+    ):
+        with pytest.raises(litellm.BudgetExceededError) as exc_info:
+            await _check_team_member_budget(
+                team_object=team_object,
+                user_object=user_object,
+                valid_token=valid_token,
+                prisma_client=prisma_client,
+                user_api_key_cache=DualCache(),
+                proxy_logging_obj=proxy_logging_obj,
+            )
+    assert exc_info.value.current_cost == 150.0
+    assert exc_info.value.max_budget == 100.0
diff --git a/tests/test_litellm/proxy/management_endpoints/test_team_endpoints.py b/tests/test_litellm/proxy/management_endpoints/test_team_endpoints.py
index a89bc9a8a3e..0b9597da057 100644
--- a/tests/test_litellm/proxy/management_endpoints/test_team_endpoints.py
+++ b/tests/test_litellm/proxy/management_endpoints/test_team_endpoints.py
@@ -15422,3 +15422,26 @@ async def test_team_info_reports_what_the_caller_may_edit(caller, org_admin, ena
         )
 
     assert response["team_info"].caller_edit_access.model_dump(mode="json") == expected
+
+
+def test_build_member_budget_patch_maps_temp_budget_fields() -> None:
+    from litellm.proxy.management_endpoints.team_endpoints import _build_member_budget_patch
+
+    expiry: Final = datetime(2030, 1, 1, tzinfo=timezone.utc)
+    request: Final = TeamMemberUpdateRequest(
+        team_id="team-1",
+        user_id="user-1",
+        temp_budget_increase=50.0,
+        temp_budget_expiry=expiry,
+    )
+    assert _build_member_budget_patch(request) == {
+        "temp_budget_increase": 50.0,
+        "temp_budget_expiry": expiry,
+    }
+
+
+def test_team_member_update_request_temp_budget_fields_must_be_set_together() -> None:
+    with pytest.raises(ValidationError, match="temp_budget_increase and temp_budget_expiry must be set together"):
+        TeamMemberUpdateRequest(team_id="team-1", user_id="user-1", temp_budget_increase=50.0)
+    with pytest.raises(ValidationError, match="temp_budget_increase and temp_budget_expiry must be set together"):
+        TeamMemberUpdateRequest(team_id="team-1", user_id="user-1", temp_budget_expiry="2030-01-01T00:00:00Z")