diff --git a/.gitea/workflows/ci.yml b/.gitea/workflows/ci.yml
index bd5bd006..c57b6bbd 100644
--- a/.gitea/workflows/ci.yml
+++ b/.gitea/workflows/ci.yml
@@ -190,6 +190,9 @@ jobs:
     - name: Validate Dotnet CICD Chain Contract
       run: python3 tools/validate_dotnet_cicd_chain_contract_v1.py
 
+    - name: Validate Dotnet Domain Parity Backlog
+      run: python3 tools/validate_dotnet_domain_parity_backlog_v1.py
+
 
 
     - name: Build Calibration Priority Backlog
diff --git a/AGENTS.md b/AGENTS.md
index 3512b48f..44e48d6a 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -105,6 +105,7 @@
 - `docs/WBS_10_DOTNET_NORMALIZATION_CONTRACT.yaml`: WBS-10 normalization/read model 계약.
 - `docs/WBS_10_DOTNET_IDEMPOTENCY_CONTRACT.yaml`: WBS-10 idempotency/lock 계약.
 - `docs/WBS_10_DOTNET_CICD_CHAIN_CONTRACT.yaml`: WBS-10 CI/CD 순차 게이트 계약.
+- `docs/WBS_10_DOTNET_DOMAIN_PARITY_BACKLOG.yaml`: WBS-10 domain parity backlog contract.
 - `tools/validate_dotnet_migration_roadmap_v1.py`: WBS-10 상세 로드맵 YAML validator.
 - `tools/validate_dotnet_migration_execution_plan_v1.py`: WBS-10 실행 분해 계획 validator.
 - `tools/validate_dotnet_parity_contract_v1.py`: WBS-10 parity 계약 validator.
@@ -113,6 +114,7 @@
 - `tools/validate_dotnet_normalization_contract_v1.py`: WBS-10 normalization 계약 validator.
 - `tools/validate_dotnet_idempotency_contract_v1.py`: WBS-10 idempotency 계약 validator.
 - `tools/validate_dotnet_cicd_chain_contract_v1.py`: WBS-10 CI/CD chain 계약 validator.
+- `tools/validate_dotnet_domain_parity_backlog_v1.py`: WBS-10 domain parity backlog validator.
 - `Temp/snapshot_admin_approval_packet_v1.json`: snapshot admin approval packet export.
 - `Temp/snapshot_admin_approval_packet_v1.md`: snapshot admin approval packet summary.
 - `Temp/`: 실행 결과와 캐시. 라우팅 대상은 아니며 runtime consumer만 읽는다.
diff --git a/docs/ROADMAP_WBS.md b/docs/ROADMAP_WBS.md
index 0b5770cf..2740c1bf 100644
--- a/docs/ROADMAP_WBS.md
+++ b/docs/ROADMAP_WBS.md
@@ -1474,6 +1474,7 @@ WBS-8.8 (KIS 리팩터) — 독립적 (원격 병행)
 > normalization contract: [WBS_10_DOTNET_NORMALIZATION_CONTRACT.yaml](./WBS_10_DOTNET_NORMALIZATION_CONTRACT.yaml)
 > idempotency contract: [WBS_10_DOTNET_IDEMPOTENCY_CONTRACT.yaml](./WBS_10_DOTNET_IDEMPOTENCY_CONTRACT.yaml)
 > ci/cd chain contract: [WBS_10_DOTNET_CICD_CHAIN_CONTRACT.yaml](./WBS_10_DOTNET_CICD_CHAIN_CONTRACT.yaml)
+> domain parity backlog: [WBS_10_DOTNET_DOMAIN_PARITY_BACKLOG.yaml](./WBS_10_DOTNET_DOMAIN_PARITY_BACKLOG.yaml)
 
 > 현황 진단(2026-06-26): .NET 프로젝트는 Python 엔진(41 모듈, 14,500 LOC) 대비 5~10%(~1,400 LOC) 수준.
 > Domain 계산기 6개·데이터 모델 8개·KIS/Naver/Yahoo 클라이언트·PostgreSQL 마이그레이션·Razor Pages 어드민 대시보드 기본 구현 완료.
diff --git a/docs/WBS_10_DOTNET_DOMAIN_PARITY_BACKLOG.yaml b/docs/WBS_10_DOTNET_DOMAIN_PARITY_BACKLOG.yaml
new file mode 100644
index 00000000..75099915
--- /dev/null
+++ b/docs/WBS_10_DOTNET_DOMAIN_PARITY_BACKLOG.yaml
@@ -0,0 +1,50 @@
+formula_id: WBS_10_DOTNET_DOMAIN_PARITY_BACKLOG_V1
+owner: QuantEngine
+status: draft
+goal: "핵심 계산기 parity 대상과 우선순위를 고정한다."
+
+coverage_min: 1.0
+tolerance_policy:
+  numeric_default: 0
+  text_default: exact
+  factor_calculator_numeric: 0.000001
+  exit_stop_price_numeric: 0.0001
+
+parity_targets:
+  - target_id: formula_engine_timing
+    source: src/dotnet/QuantEngine.Core/Domain/FormulaEngine.cs
+    priority: 1
+    reason: "timing decision은 downstream routing의 선행 게이트"
+  - target_id: formula_engine_sell
+    source: src/dotnet/QuantEngine.Core/Domain/FormulaEngine.cs
+    priority: 2
+    reason: "sell ratio/action은 실행 표 생성의 핵심"
+  - target_id: formula_engine_final
+    source: src/dotnet/QuantEngine.Core/Domain/FormulaEngine.cs
+    priority: 3
+    reason: "final decision은 보고/배포의 최종 산출"
+  - target_id: exit_stop_price
+    source: src/dotnet/QuantEngine.Core/Domain/ExitDecisions.cs
+    priority: 4
+    reason: "손절가 절대값 일치가 필요"
+  - target_id: exit_stop_ladder
+    source: src/dotnet/QuantEngine.Core/Domain/ExitDecisions.cs
+    priority: 5
+    reason: "워터폴 선형 처리 검증"
+  - target_id: exit_heat_thresholds
+    source: src/dotnet/QuantEngine.Core/Domain/ExitDecisions.cs
+    priority: 6
+    reason: "동적 열감 임계값 일치"
+  - target_id: factor_calculator
+    source: src/dotnet/QuantEngine.Core/Domain/FactorCalculator.cs
+    priority: 7
+    reason: "정규화된 입력 순서에서 deterministic output 보장"
+
+coverage_rule:
+  - "priority 1..7 모두 존재해야 한다"
+  - "tolerance_policy는 숫자/텍스트 기본값을 정의해야 한다"
+  - "새 parity target은 reference fixture와 함께만 추가한다"
+
+notes:
+  - "parity는 기능 추가가 아니라 회귀 차단 장치다."
+  - "수치 재계산은 reference fixture 외에서 하지 않는다."
diff --git a/spec/41_release_dag.yaml b/spec/41_release_dag.yaml
index eb9f9eef..268e8d16 100644
--- a/spec/41_release_dag.yaml
+++ b/spec/41_release_dag.yaml
@@ -2409,6 +2409,22 @@ dag:
       - Temp/wbs_10_dotnet_cicd_chain_contract_v1.json
       strict: true
       timeout_sec: 60
+    validate_dotnet_domain_parity_backlog:
+      artifact_policy: keep
+      cache_key: validate_dotnet_domain_parity_backlog_v1
+      command:
+      - python
+      - tools/validate_dotnet_domain_parity_backlog_v1.py
+      depends_on: []
+      id: validate_dotnet_domain_parity_backlog
+      inputs:
+      - tools/validate_dotnet_domain_parity_backlog_v1.py
+      - docs/WBS_10_DOTNET_DOMAIN_PARITY_BACKLOG.yaml
+      note: WBS-10 핵심 계산기 parity 대상과 우선순위를 검증한다.
+      outputs:
+      - Temp/wbs_10_dotnet_domain_parity_backlog_v1.json
+      strict: true
+      timeout_sec: 60
     validate_specs:
       artifact_policy: keep
       cache_key: validate_specs_v1
diff --git a/tests/unit/test_validate_dotnet_domain_parity_backlog_v1.py b/tests/unit/test_validate_dotnet_domain_parity_backlog_v1.py
new file mode 100644
index 00000000..fd6d7822
--- /dev/null
+++ b/tests/unit/test_validate_dotnet_domain_parity_backlog_v1.py
@@ -0,0 +1,38 @@
+from __future__ import annotations
+
+import json
+import subprocess
+import sys
+from pathlib import Path
+
+
+def test_validate_dotnet_domain_parity_backlog_passes() -> None:
+    root = Path(__file__).resolve().parents[2]
+    proc = subprocess.run(
+        [sys.executable, str(root / "tools" / "validate_dotnet_domain_parity_backlog_v1.py")],
+        cwd=root,
+        capture_output=True,
+        text=True,
+    )
+    assert proc.returncode == 0, proc.stdout + proc.stderr
+    payload = json.loads(proc.stdout)
+    assert payload["gate"] == "PASS"
+
+
+def test_validate_dotnet_domain_parity_backlog_reports_missing_target() -> None:
+    root = Path(__file__).resolve().parents[2]
+    temp = root / "Temp" / "test_wbs_10_domain_parity_backlog_bad.yaml"
+    temp.write_text(
+        "formula_id: WBS_10_DOTNET_DOMAIN_PARITY_BACKLOG_V1\ncoverage_min: 1.0\ntolerance_policy:\n  numeric_default: 0\n  text_default: exact\nparity_targets:\n  - target_id: formula_engine_timing\n    priority: 1\n  - target_id: formula_engine_sell\n    priority: 2\n",
+        encoding="utf-8",
+    )
+    proc = subprocess.run(
+        [sys.executable, str(root / "tools" / "validate_dotnet_domain_parity_backlog_v1.py"), "--backlog", str(temp)],
+        cwd=root,
+        capture_output=True,
+        text=True,
+    )
+    assert proc.returncode != 0
+    payload = json.loads(proc.stdout)
+    assert payload["gate"] == "FAIL"
+    assert "exit_stop_price missing" in payload["missing"]
diff --git a/tools/validate_dotnet_domain_parity_backlog_v1.py b/tools/validate_dotnet_domain_parity_backlog_v1.py
new file mode 100644
index 00000000..2d83f61f
--- /dev/null
+++ b/tools/validate_dotnet_domain_parity_backlog_v1.py
@@ -0,0 +1,84 @@
+#!/usr/bin/env python3
+from __future__ import annotations
+
+import argparse
+import json
+from pathlib import Path
+from typing import Any
+
+import yaml
+
+
+REQUIRED_TARGETS = {
+    "formula_engine_timing",
+    "formula_engine_sell",
+    "formula_engine_final",
+    "exit_stop_price",
+    "exit_stop_ladder",
+    "exit_heat_thresholds",
+    "factor_calculator",
+}
+
+
+def load_yaml(path: Path) -> dict[str, Any]:
+    if not path.exists():
+        raise FileNotFoundError(path)
+    return yaml.safe_load(path.read_text(encoding="utf-8"))
+
+
+def main(argv: list[str] | None = None) -> int:
+    parser = argparse.ArgumentParser(description="Validate WBS-10 dotnet domain parity backlog")
+    parser.add_argument("--backlog", default="docs/WBS_10_DOTNET_DOMAIN_PARITY_BACKLOG.yaml")
+    args = parser.parse_args(argv)
+
+    backlog_path = Path(args.backlog).resolve()
+    payload: dict[str, Any] = {
+        "formula_id": "WBS_10_DOTNET_DOMAIN_PARITY_BACKLOG_V1",
+        "gate": "FAIL",
+        "missing": [],
+        "evidence": {"backlog": str(backlog_path)},
+    }
+
+    try:
+        data = load_yaml(backlog_path)
+    except FileNotFoundError:
+        payload["missing"].append("backlog missing")
+        print(json.dumps(payload, ensure_ascii=False, indent=2))
+        return 1
+
+    if data.get("formula_id") != "WBS_10_DOTNET_DOMAIN_PARITY_BACKLOG_V1":
+        payload["missing"].append("formula_id")
+    if data.get("coverage_min") != 1.0:
+        payload["missing"].append("coverage_min")
+    tolerance = data.get("tolerance_policy") or {}
+    if tolerance.get("numeric_default") != 0:
+        payload["missing"].append("tolerance_policy.numeric_default")
+    if tolerance.get("text_default") != "exact":
+        payload["missing"].append("tolerance_policy.text_default")
+
+    targets = data.get("parity_targets") or []
+    target_ids = {item.get("target_id", "") for item in targets}
+    missing_targets = REQUIRED_TARGETS - target_ids
+    for target in sorted(missing_targets):
+        payload["missing"].append(f"{target} missing")
+
+    priorities = [item.get("priority") for item in targets]
+    if priorities != sorted(priorities):
+        payload["missing"].append("priority order")
+
+    payload["gate"] = "PASS" if not payload["missing"] else "FAIL"
+    payload["message"] = (
+        "WBS-10 dotnet domain parity backlog validation passed."
+        if payload["gate"] == "PASS"
+        else "WBS-10 dotnet domain parity backlog validation failed."
+    )
+
+    out_path = backlog_path.parent.parent / "Temp" / "wbs_10_dotnet_domain_parity_backlog_v1.json"
+    out_path.parent.mkdir(parents=True, exist_ok=True)
+    out_path.write_text(json.dumps(payload, ensure_ascii=False, indent=2), encoding="utf-8")
+    print(json.dumps(payload, ensure_ascii=False, indent=2))
+    return 0 if payload["gate"] == "PASS" else 1
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())