diff --git a/.github/assets/roi-calculator/20-partial-repository-report.png b/.github/assets/roi-calculator/20-partial-repository-report.png
new file mode 100644
index 00000000000..eac03deddae
Binary files /dev/null and b/.github/assets/roi-calculator/20-partial-repository-report.png differ
diff --git a/litellm/proxy/roi_calculator/analytics.py b/litellm/proxy/roi_calculator/analytics.py
index a525d83409d..cb3ef46e5a4 100644
--- a/litellm/proxy/roi_calculator/analytics.py
+++ b/litellm/proxy/roi_calculator/analytics.py
@@ -81,6 +81,7 @@ def _summarize_person(
     key: str,
     spend: tuple[ROISpendRecord, ...],
     pulls: tuple[tuple[ROIPullRecord, str, str], ...],
+    complete_scope: bool,
 ) -> ROIPersonSummary:
     spend_rows: Final = tuple(
         row for row in spend if _person_key(normalize_email(row["email"]), "gateway:" + row["user_id"]) == key
@@ -111,11 +112,14 @@ def _summarize_person(
         pending_prs=pending_count,
         match_methods=methods,
         eligible=eligible,
-        cost_per_hour=spend_total / hours if eligible and hours > 0 and spend_total is not None else None,
+        cost_per_hour=spend_total / hours
+        if complete_scope and eligible and hours > 0 and spend_total is not None
+        else None,
     )
 
 
 def summarize(report: ROIReport, mappings: Mapping[str, str]) -> ROISummary:
+    complete_scope: Final = not report.get("unavailable_repos", ())
     observed: Final = frozenset(
         normalized for normalized in (normalize_email(row["email"]) for row in report["spend"]) if normalized
     )
@@ -134,6 +138,7 @@ def summarize(report: ROIReport, mappings: Mapping[str, str]) -> ROISummary:
             key,
             report["spend"],
             matched_pulls,
+            complete_scope,
         )
         for key in sorted(people_keys)
     )
@@ -181,8 +186,8 @@ def summarize(report: ROIReport, mappings: Mapping[str, str]) -> ROISummary:
         total_spend=total_spend,
         total_output_hours=total_output_hours,
         excluded_spend=max(0.0, total_spend - matched_spend),
-        cost_per_hour=matched_spend / output_hours if output_hours else None,
-        hours_per_dollar=output_hours / matched_spend if matched_spend else None,
+        cost_per_hour=matched_spend / output_hours if complete_scope and output_hours else None,
+        hours_per_dollar=output_hours / matched_spend if complete_scope and matched_spend else None,
         merged_prs=len(pull_summaries),
         estimated_prs=sum(person["estimated_prs"] for person in people),
         matched_prs=sum(pull["matched"] for pull in pull_summaries),
diff --git a/litellm/proxy/roi_calculator/sync.py b/litellm/proxy/roi_calculator/sync.py
index da78a7b3dc2..93614c33da0 100644
--- a/litellm/proxy/roi_calculator/sync.py
+++ b/litellm/proxy/roi_calculator/sync.py
@@ -245,6 +245,54 @@ class _ProcessedPull(NamedTuple):
     metadata_unavailable: bool = False
 
 
+class _RepositoryPulls(NamedTuple):
+    repo: str
+    pulls: tuple[GitHubPullListItem, ...]
+    unavailable: bool = False
+
+
+class _RepositoryBatch(NamedTuple):
+    queue: tuple[tuple[str, GitHubPullListItem], ...]
+    unavailable_repos: tuple[str, ...]
+    warnings: tuple[str, ...]
+    stage: str
+
+
+async def _read_repository(github: GitHub, repo: str, start: date, end: date) -> _RepositoryPulls:
+    try:
+        return _RepositoryPulls(repo, await github.pulls(repo, start, end))
+    except SourceError:
+        return _RepositoryPulls(repo, (), unavailable=True)
+
+
+async def _read_repositories(github: GitHub, repos: tuple[str, ...], start: date, end: date) -> _RepositoryBatch:
+    groups: Final = await asyncio.gather(*(_read_repository(github, repo, start, end) for repo in repos))
+    unavailable: Final = tuple(group.repo for group in groups if group.unavailable)
+    if len(unavailable) == len(repos):
+        raise SourceError(
+            "GitHub could not read any selected repository. No new report was published; "
+            "check repository access or try analysis again later."
+        )
+    queue: Final = tuple(chain.from_iterable(((group.repo, pull) for pull in group.pulls) for group in groups))
+    warnings: Final = (
+        (
+            (
+                f"Incomplete report: could not read {', '.join(unavailable)}. "
+                "Results include only accessible repositories. Spend-per-hour figures are unavailable until "
+                "all selected repositories can be read. Check repository access or run analysis again to retry."
+            ),
+        )
+        if unavailable
+        else ()
+    )
+    return _RepositoryBatch(
+        queue,
+        unavailable,
+        warnings,
+        "Analysis complete with unavailable repositories" if unavailable else "Analysis complete",
+    )
+
+
 def _processed_records(processed: tuple[_ProcessedPull, ...]) -> Mapping[int, ROIPullRecord]:
     if processed and all(item.metadata_unavailable for item in processed):
         raise SourceError(
@@ -384,12 +432,8 @@ class SyncManager:
             start: Final = end - timedelta(days=settings.backfill_days - 1)
             spend: Final = await spend_reader(start, end)
             self._update_status(phase="repositories", stage="Reading configured repositories")
-            pull_groups: Final = await asyncio.gather(*(github.pulls(repo, start, end) for repo in settings.repos))
-            queue: Final = tuple(
-                chain.from_iterable(
-                    ((repo, pull) for pull in pulls) for repo, pulls in zip(settings.repos, pull_groups, strict=True)
-                )
-            )
+            repositories: Final = await _read_repositories(github, settings.repos, start, end)
+            queue: Final = repositories.queue
             context: Final = cache_context(settings, estimator_models)
             previous: Final = await self._previous_report(repository)
             previous_pulls: Final[Mapping[str, ROIPullRecord]] = MappingProxyType(
@@ -500,7 +544,8 @@ class SyncManager:
                 spend=spend,
                 pulls=tuple(processed_by_index[index] for index in range(len(queue))),
                 settings_fingerprint=settings_fingerprint(settings),
-                warnings=(),
+                warnings=repositories.warnings,
+                unavailable_repos=repositories.unavailable_repos,
             )
             await github.close()
             report_json: Final[Mapping[str, object]] = _JSON_OBJECT_ADAPTER.validate_python(
@@ -514,7 +559,7 @@ class SyncManager:
                     {
                         "running": False,
                         "phase": "complete",
-                        "stage": "Analysis complete",
+                        "stage": repositories.stage,
                         "finished_at": self._clock().isoformat(),
                     }
                 )
diff --git a/litellm/types/roi_calculator.py b/litellm/types/roi_calculator.py
index 7e3b31732df..2e3aa8cf49a 100644
--- a/litellm/types/roi_calculator.py
+++ b/litellm/types/roi_calculator.py
@@ -205,6 +205,7 @@ class ROIReport(TypedDict):
     pulls: ReadOnly[tuple[ROIPullRecord, ...]]
     settings_fingerprint: ReadOnly[str]
     warnings: NotRequired[ReadOnly[tuple[str, ...]]]
+    unavailable_repos: NotRequired[ReadOnly[tuple[str, ...]]]
     id: NotRequired[ReadOnly[str]]
 
 
diff --git a/tests/unit/proxy/roi_calculator/test_sync.py b/tests/unit/proxy/roi_calculator/test_sync.py
index 548712ec65c..a1f98caf0c5 100644
--- a/tests/unit/proxy/roi_calculator/test_sync.py
+++ b/tests/unit/proxy/roi_calculator/test_sync.py
@@ -9,6 +9,7 @@ import httpx
 import pytest
 from pydantic import TypeAdapter
 
+from litellm.proxy.roi_calculator.analytics import summarize
 from litellm.proxy.roi_calculator.estimator import CompletionCaller
 from litellm.proxy.roi_calculator.github import GitHubPullListItem
 from litellm.proxy.roi_calculator.sync import SpendReader, SyncManager, read_spend
@@ -457,3 +458,72 @@ async def test_one_unreadable_pr_preserves_other_estimates_in_report() -> None:
     assert manager.status.phase == "complete"
     assert manager.status.estimated == 1
     assert manager.status.needs_attention == 1
+
+
+def _repository_outage_transport(status: int, *, all_unavailable: bool = False) -> httpx.MockTransport:
+    baseline: Final = _transport()
+
+    def respond(request: httpx.Request) -> httpx.Response:
+        if request.url.path == "/repos/org/unavailable/pulls":
+            return httpx.Response(status, json=[] if status == 200 else {"message": "Repository unavailable"})
+        if all_unavailable and request.url.path.endswith("/pulls"):
+            return httpx.Response(status)
+        return baseline.handle_request(request)
+
+    return httpx.MockTransport(respond)
+
+
+@pytest.mark.asyncio
+@pytest.mark.parametrize("status", (403, 404, 429))
+async def test_unavailable_repository_publishes_flagged_partial_report_and_recovers(status: int) -> None:
+    repository: Final = _ReportRepository()
+    manager: Final = SyncManager(clock=_fixed_now)
+    settings: Final = _settings().model_copy(update=MappingProxyType({"repos": ("org/repo", "org/unavailable")}))
+
+    assert await manager.start(
+        settings, repository, _spend_reader(), _completion(), _repository_outage_transport(status)
+    )
+    await _wait_until_finished(manager)
+
+    report: Final = TypeAdapter(ROIReport).validate_python(repository.values["roi_calculator_report"])
+    summary: Final = summarize(report, MappingProxyType({}))
+    assert manager.status.phase == "complete"
+    assert manager.status.estimated == 1
+    assert report["unavailable_repos"] == ("org/unavailable",)
+    assert "Incomplete report" in report["warnings"][0] and "org/unavailable" in report["warnings"][0]
+    assert report["pulls"][0]["estimate"]["status"] == "estimated"
+    assert summary["metrics"]["total_output_hours"] == 4
+    assert summary["metrics"]["cost_per_hour"] is None
+    assert summary["metrics"]["hours_per_dollar"] is None
+    assert all(person["cost_per_hour"] is None for person in summary["people"])
+
+    async def unexpected_completion(request: ROICompletionRequest) -> object:
+        raise AssertionError("The healthy repository's estimate must be reused after recovery")
+
+    assert await manager.start(
+        settings, repository, _spend_reader(), unexpected_completion, _repository_outage_transport(200)
+    )
+    await _wait_until_finished(manager)
+    recovered: Final = TypeAdapter(ROIReport).validate_python(repository.values["roi_calculator_report"])
+    assert recovered["unavailable_repos"] == ()
+    assert recovered["warnings"] == ()
+    assert manager.status.reused == 1
+    assert summarize(recovered, MappingProxyType({}))["metrics"]["cost_per_hour"] == 3
+
+
+@pytest.mark.asyncio
+async def test_all_repository_outage_preserves_previous_report() -> None:
+    repository: Final = _ReportRepository()
+    manager: Final = SyncManager(clock=_fixed_now)
+    settings: Final = _settings().model_copy(update=MappingProxyType({"repos": ("org/repo", "org/unavailable")}))
+    assert await manager.start(settings, repository, _spend_reader(), _completion(), _repository_outage_transport(200))
+    await _wait_until_finished(manager)
+    previous: Final = repository.values["roi_calculator_report"]
+
+    assert await manager.start(
+        settings, repository, _spend_reader(), _completion(), _repository_outage_transport(403, all_unavailable=True)
+    )
+    await _wait_until_finished(manager)
+    assert manager.status.phase == "error"
+    assert manager.status.error is not None and "No new report was published" in manager.status.error
+    assert repository.values["roi_calculator_report"] == previous
diff --git a/ui/litellm-dashboard/src/app/(dashboard)/roi-calculator/_components/ROICalculatorView.integration.test.tsx b/ui/litellm-dashboard/src/app/(dashboard)/roi-calculator/_components/ROICalculatorView.integration.test.tsx
index 3c7965e917f..49d0d03df85 100644
--- a/ui/litellm-dashboard/src/app/(dashboard)/roi-calculator/_components/ROICalculatorView.integration.test.tsx
+++ b/ui/litellm-dashboard/src/app/(dashboard)/roi-calculator/_components/ROICalculatorView.integration.test.tsx
@@ -157,6 +157,30 @@ describe("ROICalculatorView", () => {
     );
   });
 
+  it("shows incomplete repository results without a spend-per-hour figure", async () => {
+    const warning = "Incomplete report: could not read org/unavailable. Spend-per-hour figures are unavailable.";
+    vi.mocked(apiClient.get).mockImplementation((path: string) => {
+      if (path === "/roi-calculator/settings") return Promise.resolve(settings);
+      if (path === "/roi-calculator/report") {
+        return Promise.resolve({
+          report: {
+            ...summary,
+            warnings: [warning],
+            metrics: { ...summary.metrics, cost_per_hour: null, hours_per_dollar: null },
+            people: summary.people.map((person) => ({ ...person, cost_per_hour: null })),
+          },
+        });
+      }
+      return Promise.resolve(idleStatus);
+    });
+
+    render(<ROICalculatorView accessToken="token" />);
+
+    expect(await screen.findByRole("alert")).toHaveTextContent(warning);
+    expect(screen.getByRole("button", { name: "Open estimate for org/repo pull request 42" })).toBeInTheDocument();
+    expect(screen.queryByText("$3.00")).not.toBeInTheDocument();
+  });
+
   it("lets a view-only admin read the report without write controls", async () => {
     const runningStatus = {
       ...idleStatus,