diff --git a/crypto_monitor_binance/app.py b/crypto_monitor_binance/app.py
index 59cc6e7..07dc57d 100644
--- a/crypto_monitor_binance/app.py
+++ b/crypto_monitor_binance/app.py
@@ -2281,7 +2281,7 @@ def format_hold_minutes(minutes):
 
 
 def calc_pnl(direction, trigger_price, exit_price, margin_capital, leverage, notional_usdt=None):
-    """估算盈亏(USDT).优先用名义价值 notional_usdt,否则 margin×leverage."""
+    """估算净盈亏(USDT).优先用名义价值 notional_usdt,否则 margin×leverage;扣双边 taker 费."""
     try:
         trigger = float(trigger_price)
         exit_p = float(exit_price)
@@ -2299,7 +2299,14 @@ def calc_pnl(direction, trigger_price, exit_price, margin_capital, leverage, not
             pnl_ratio = (trigger - exit_p) / trigger
         else:
             pnl_ratio = (exit_p - trigger) / trigger
-        return round(notional * pnl_ratio, FUNDS_DECIMALS)
+        gross = notional * pnl_ratio
+        try:
+            from lib.trade.trade_fee_lib import net_pnl_after_fee
+
+            net = net_pnl_after_fee(gross, trigger, exit_p, open_notional=notional)
+            return round(float(net), FUNDS_DECIMALS) if net is not None else round(gross, FUNDS_DECIMALS)
+        except Exception:
+            return round(gross, FUNDS_DECIMALS)
     except Exception:
         return 0.0
 
@@ -2449,7 +2456,7 @@ def _sum_binance_income(entries, income_types, trade_ids=None):
 
 
 def calc_pnl_from_closing_trades(direction, entry_price, trades, exchange_symbol=None):
-    """按减仓成交数量×价差汇总盈亏(不含资金费;比单点标记价更接近交易所)."""
+    """按减仓成交数量×价差汇总净盈亏(扣固定双边 taker 费;不含资金费)."""
     try:
         entry = float(entry_price)
     except (TypeError, ValueError):
@@ -2465,6 +2472,7 @@ def calc_pnl_from_closing_trades(direction, entry_price, trades, exchange_symbol
             contract_size = 1.0
     pnl = 0.0
     qty = 0.0
+    notional_close = 0.0
     for t in trades:
         try:
             price = float(t.get("price") or 0)
@@ -2474,13 +2482,22 @@ def calc_pnl_from_closing_trades(direction, entry_price, trades, exchange_symbol
         if price <= 0 or amount <= 0:
             continue
         qty += amount
+        notional_close += amount * price
         if direction == "short":
             pnl += amount * (entry - price)
         else:
             pnl += amount * (price - entry)
     if qty <= 0:
         return None
-    return round(pnl, FUNDS_DECIMALS)
+    exit_px = (notional_close / qty) if qty > 0 else entry
+    try:
+        from lib.trade.trade_fee_lib import net_pnl_after_fee
+
+        # amount 已乘 contractSize,此处面值用 1
+        net = net_pnl_after_fee(pnl, entry, exit_px, qty, 1.0)
+        return round(float(net), FUNDS_DECIMALS) if net is not None else round(pnl, FUNDS_DECIMALS)
+    except Exception:
+        return round(pnl, FUNDS_DECIMALS)
 
 
 def resolve_trade_pnl_amount(
@@ -2535,10 +2552,31 @@ def resolve_trade_pnl_amount(
         ex_sym, direction, open_ms, close_ms, closing_trades=closing_trades
     )
     if net is not None:
+        # income 已含真实手续费,直接用.
         return net, exit_price, eo, ec, sync_key
     if closing_trades:
         trade_pnl = calc_binance_realized_pnl_from_trades(closing_trades)
         if trade_pnl is not None:
+            # fill.realizedPnl 通常不含 commission,补固定双边费.
+            try:
+                from lib.trade.trade_fee_lib import net_pnl_after_fee
+
+                entry = float(entry_price or 0)
+                exit_p = float(exit_price or entry or 0)
+                if entry > 0 and exit_p > 0:
+                    open_n = get_plan_notional_usdt(row)
+                    if open_n is None:
+                        margin = row["margin_capital"] if hasattr(row, "keys") else row.get("margin_capital")
+                        lev = row["leverage"] if hasattr(row, "keys") else row.get("leverage")
+                        try:
+                            open_n = float(margin or 0) * float(lev or 1)
+                        except (TypeError, ValueError):
+                            open_n = None
+                    adj = net_pnl_after_fee(trade_pnl, entry, exit_p, open_notional=open_n)
+                    if adj is not None:
+                        trade_pnl = adj
+            except Exception:
+                pass
             return trade_pnl, exit_price, None, None, None
         fill_pnl = calc_pnl_from_closing_trades(direction, entry_price, closing_trades, ex_sym)
         if fill_pnl is not None:
diff --git a/crypto_monitor_gate/app.py b/crypto_monitor_gate/app.py
index d5feb6f..fe54bdd 100644
--- a/crypto_monitor_gate/app.py
+++ b/crypto_monitor_gate/app.py
@@ -2261,6 +2261,7 @@ def format_hold_minutes(minutes):
 
 
 def calc_pnl(direction, trigger_price, exit_price, margin_capital, leverage):
+    """估算净盈亏(USDT):价差毛利 − 双边 taker 费(默认各 0.05%)."""
     try:
         trigger = float(trigger_price)
         exit_p = float(exit_price)
@@ -2272,7 +2273,15 @@ def calc_pnl(direction, trigger_price, exit_price, margin_capital, leverage):
             pnl_ratio = (trigger - exit_p) / trigger
         else:
             pnl_ratio = (exit_p - trigger) / trigger
-        return round(margin * lev * pnl_ratio, 4)
+        notional = margin * lev
+        gross = notional * pnl_ratio
+        try:
+            from lib.trade.trade_fee_lib import net_pnl_after_fee
+
+            net = net_pnl_after_fee(gross, trigger, exit_p, open_notional=notional)
+            return float(net) if net is not None else round(gross, 4)
+        except Exception:
+            return round(gross, 4)
     except Exception:
         return 0.0
 
diff --git a/crypto_monitor_okx/app.py b/crypto_monitor_okx/app.py
index cc0971f..7a43a2d 100644
--- a/crypto_monitor_okx/app.py
+++ b/crypto_monitor_okx/app.py
@@ -2157,6 +2157,7 @@ def format_hold_minutes(minutes):
 
 
 def calc_pnl(direction, trigger_price, exit_price, margin_capital, leverage):
+    """估算净盈亏(USDT):价差毛利 − 双边 taker 费(默认各 0.05%)."""
     try:
         trigger = float(trigger_price)
         exit_p = float(exit_price)
@@ -2168,7 +2169,15 @@ def calc_pnl(direction, trigger_price, exit_price, margin_capital, leverage):
             pnl_ratio = (trigger - exit_p) / trigger
         else:
             pnl_ratio = (exit_p - trigger) / trigger
-        return round(margin * lev * pnl_ratio, 4)
+        notional = margin * lev
+        gross = notional * pnl_ratio
+        try:
+            from lib.trade.trade_fee_lib import net_pnl_after_fee
+
+            net = net_pnl_after_fee(gross, trigger, exit_p, open_notional=notional)
+            return float(net) if net is not None else round(gross, 4)
+        except Exception:
+            return round(gross, 4)
     except Exception:
         return 0.0
 
diff --git a/docs/更新文档.md b/docs/更新文档.md
index eb74a5e..f20c681 100644
--- a/docs/更新文档.md
+++ b/docs/更新文档.md
@@ -4,6 +4,54 @@
 
 ---
 
+## 2026-07-17 · 永续估算盈亏统一扣双边 taker 手续费
+
+### 修改原因
+
+中控/实例「盈利金额」、微信推送「本单盈亏」、交易记录 `pnl_amount` 使用价差毛利，未扣开平手续费，与交易所实际净盈亏及盈亏比体感偏差较大。
+
+### 定稿口径
+
+| 项 | 约定 |
+|----|------|
+| 浮盈亏 | 仍读交易所，不改 |
+| 费率 | taker 单边 **0.05%**（`PERP_TAKER_FEE_RATE`，默认 `0.0005`），开+平双边 |
+| 净盈亏 | 毛利 − 开仓名义×费率 − 平仓名义×费率（不考虑滑点） |
+| RR | 净盈利 / 原风险（风险侧加费第二步再做） |
+| 历史记录 | 不回算 |
+
+### 修改的地方
+
+| 文件 | 改动摘要 |
+|------|----------|
+| `lib/trade/trade_fee_lib.py` | 新增公共扣费 / 净盈亏 |
+| `lib/strategy/strategy_roll_ui_lib.py` | `reward_at_tp_usdt` → 净盈利 |
+| `lib/strategy/strategy_roll_lib.py` | 同上 |
+| `lib/strategy/strategy_trend_lib.py` | `calc_tp_profit_usdt` → 净盈利 |
+| `lib/hub/hub_calculator_lib.py` | 滚仓预览止盈盈利 / 首仓盈利扣费；RR 跟净盈利 |
+| `crypto_monitor_okx/app.py` | `calc_pnl` → 净盈亏（推送/记账） |
+| `crypto_monitor_gate/app.py` | 同上 |
+| `crypto_monitor_binance/app.py` | `calc_pnl` / 成交回退扣费；income 真费路径优先不改 |
+| `tests/test_trade_fee_lib.py` | 新增 |
+| `tests/test_strategy_roll_ui_lib.py` | 断言改净额 |
+| `tests/test_order_monitor_display_lib.py` | 断言改净额 |
+
+### 达成的目标
+
+1. 中控持仓「盈利金额」、实例「盈利金额」、计算器止盈盈利、趋势/滚仓预览一致为净盈亏。  
+2. 微信推送与新建交易记录的 `pnl_amount` 与上述估算口径一致。  
+3. 币安若能拉到 income 净额（已含真实手续费）仍优先用交易所数。  
+4. 浮盈亏展示仍跟交易所。
+
+### 交付之后的验收
+
+1. 同一笔持仓：中控盈利金额 ≈ 实例盈利金额（均为扣费后）。  
+2. 平仓推送「本单盈亏」与新写入记录接近，不再明显大于交易所净利。  
+3. 浮盈亏与交易所 App 一致（本改不动）。  
+4. 单测：`python -m unittest tests.test_trade_fee_lib tests.test_strategy_roll_ui_lib tests.test_order_monitor_display_lib tests.test_trend_preview_tp -v` 通过。
+
+---
+
 ## 2026-07-16 · 计算器左侧 Tab + 三行输入
 
 ### 修改原因
diff --git a/lib/hub/hub_calculator_lib.py b/lib/hub/hub_calculator_lib.py
index 287ffb0..524ebcf 100644
--- a/lib/hub/hub_calculator_lib.py
+++ b/lib/hub/hub_calculator_lib.py
@@ -315,10 +315,18 @@ def _roll_leg_preview(
     cs = float(contract_size) if contract_size else 1.0
     if direction == "long":
         loss_at_sl = (new_avg - sl) * new_qty * cs
-        reward_at_tp = (tp - new_avg) * new_qty * cs
+        reward_gross = (tp - new_avg) * new_qty * cs
     else:
         loss_at_sl = (sl - new_avg) * new_qty * cs
-        reward_at_tp = (new_avg - tp) * new_qty * cs
+        reward_gross = (new_avg - tp) * new_qty * cs
+    try:
+        from lib.trade.trade_fee_lib import net_pnl_after_fee
+
+        reward_at_tp = net_pnl_after_fee(reward_gross, new_avg, tp, new_qty, cs)
+        if reward_at_tp is None:
+            reward_at_tp = reward_gross
+    except Exception:
+        reward_at_tp = reward_gross
     return {
         "add_amount_raw": q2,
         "qty_after": new_qty,
@@ -412,10 +420,18 @@ def calc_roll_calculator(
 
     if direction == "long":
         first_loss = (avg - initial_sl) * qty_f * cs
-        first_profit = (tp - avg) * qty_f * cs
+        first_profit_gross = (tp - avg) * qty_f * cs
     else:
         first_loss = (initial_sl - avg) * qty_f * cs
-        first_profit = (avg - tp) * qty_f * cs
+        first_profit_gross = (avg - tp) * qty_f * cs
+    try:
+        from lib.trade.trade_fee_lib import net_pnl_after_fee
+
+        first_profit = net_pnl_after_fee(first_profit_gross, avg, tp, qty_f, cs)
+        if first_profit is None:
+            first_profit = first_profit_gross
+    except Exception:
+        first_profit = first_profit_gross
 
     rows.append(
         {
diff --git a/lib/strategy/strategy_roll_lib.py b/lib/strategy/strategy_roll_lib.py
index 7ab8cc6..1979e64 100644
--- a/lib/strategy/strategy_roll_lib.py
+++ b/lib/strategy/strategy_roll_lib.py
@@ -143,8 +143,16 @@ def reward_at_tp_usdt(
     cs = float(contract_size or 1.0)
     direction = (direction or "long").strip().lower()
     if direction == "short":
-        return (float(avg) - float(take_profit)) * float(qty) * cs
-    return (float(take_profit) - float(avg)) * float(qty) * cs
+        gross = (float(avg) - float(take_profit)) * float(qty) * cs
+    else:
+        gross = (float(take_profit) - float(avg)) * float(qty) * cs
+    try:
+        from lib.trade.trade_fee_lib import net_pnl_after_fee
+
+        net = net_pnl_after_fee(gross, avg, take_profit, qty, cs)
+        return float(net) if net is not None else gross
+    except Exception:
+        return gross
 
 
 def roll_fib_trigger_crossed(
diff --git a/lib/strategy/strategy_roll_ui_lib.py b/lib/strategy/strategy_roll_ui_lib.py
index c0fb32c..cef900f 100644
--- a/lib/strategy/strategy_roll_ui_lib.py
+++ b/lib/strategy/strategy_roll_ui_lib.py
@@ -16,7 +16,7 @@ def reward_at_tp_usdt(
     *,
     contract_size: float = 1.0,
 ) -> Optional[float]:
-    """与 strategy_roll_lib.preview_roll 一致:线性合约 U 本位盈利."""
+    """与 strategy_roll_lib.preview_roll 一致:线性合约 U 本位净盈利(扣双边 taker 费)."""
     try:
         avg = float(avg_entry)
         tp = float(take_profit)
@@ -28,8 +28,16 @@ def reward_at_tp_usdt(
         return None
     direction = (direction or "long").strip().lower()
     if direction == "short":
-        return (avg - tp) * q * cs
-    return (tp - avg) * q * cs
+        gross = (avg - tp) * q * cs
+    else:
+        gross = (tp - avg) * q * cs
+    try:
+        from lib.trade.trade_fee_lib import net_pnl_after_fee
+
+        net = net_pnl_after_fee(gross, avg, tp, q, cs)
+        return net
+    except Exception:
+        return gross
 
 
 def leg_fill_price(leg: dict) -> Optional[float]:
diff --git a/lib/strategy/strategy_trend_lib.py b/lib/strategy/strategy_trend_lib.py
index 50a5f56..f0dcad2 100644
--- a/lib/strategy/strategy_trend_lib.py
+++ b/lib/strategy/strategy_trend_lib.py
@@ -306,13 +306,19 @@ def calc_tp_profit_usdt(
     contracts: float,
     contract_size: float = 1.0,
 ) -> Optional[float]:
-    """到达止盈价时,按累计张数与加仓后均价的盈利 U."""
+    """到达止盈价时,按累计张数与加仓后均价的净盈利 U(扣双边 taker 费)."""
     try:
         from lib.hub.hub_position_metrics import estimate_linear_swap_upnl_usdt
+        from lib.trade.trade_fee_lib import net_pnl_after_fee
 
-        return estimate_linear_swap_upnl_usdt(
+        gross = estimate_linear_swap_upnl_usdt(
             direction, float(avg_entry), float(take_profit_price), float(contracts), float(contract_size)
         )
+        if gross is None:
+            return None
+        return net_pnl_after_fee(
+            gross, avg_entry, take_profit_price, contracts, contract_size
+        )
     except (TypeError, ValueError):
         return None
 
diff --git a/lib/trade/trade_fee_lib.py b/lib/trade/trade_fee_lib.py
new file mode 100644
index 0000000..ed27312
--- /dev/null
+++ b/lib/trade/trade_fee_lib.py
@@ -0,0 +1,94 @@
+"""永续估算盈亏:固定 taker 手续费(默认单边 0.05%,开+平双边).
+
+浮盈亏仍读交易所;本模块只服务「盈利金额 / 止盈盈利 / 推送 / 记账 pnl_amount」等估算口径.
+"""
+from __future__ import annotations
+
+import math
+import os
+from typing import Optional
+
+
+def _finite(v) -> Optional[float]:
+    try:
+        f = float(v)
+        return f if math.isfinite(f) else None
+    except (TypeError, ValueError):
+        return None
+
+
+def taker_fee_rate() -> float:
+    """单边 taker 费率,默认 0.0005(=0.05%)."""
+    raw = os.getenv("PERP_TAKER_FEE_RATE", "0.0005")
+    rate = _finite(raw)
+    if rate is None or rate < 0:
+        return 0.0005
+    return rate
+
+
+def notional_usdt(price, qty, contract_size: float = 1.0) -> Optional[float]:
+    """名义价值 U = 价格 × 张数 × 合约面值."""
+    p = _finite(price)
+    q = _finite(qty)
+    cs = _finite(contract_size)
+    if p is None or q is None or p <= 0 or q <= 0:
+        return None
+    if cs is None or cs <= 0:
+        cs = 1.0
+    return abs(q) * p * cs
+
+
+def estimate_roundtrip_fee_usdt(
+    entry_price,
+    exit_price,
+    qty=None,
+    contract_size: float = 1.0,
+    *,
+    open_notional: float | None = None,
+    rate: float | None = None,
+) -> float:
+    """开+平双边手续费(各单边 rate).
+
+    优先用 价×张×面值;若无张数则用 open_notional 估开仓名义,
+    平仓名义按 exit/entry 缩放.
+    """
+    fee_rate = taker_fee_rate() if rate is None else float(rate)
+    if fee_rate <= 0:
+        return 0.0
+    entry = _finite(entry_price)
+    exit_p = _finite(exit_price)
+    open_n = notional_usdt(entry, qty, contract_size) if qty is not None else None
+    if open_n is None:
+        open_n = _finite(open_notional)
+    if open_n is None or open_n <= 0:
+        return 0.0
+    if entry is not None and entry > 0 and exit_p is not None and exit_p > 0:
+        close_n = open_n * (exit_p / entry)
+    else:
+        close_n = open_n
+    return round(open_n * fee_rate + close_n * fee_rate, 8)
+
+
+def net_pnl_after_fee(
+    gross_pnl,
+    entry_price,
+    exit_price,
+    qty=None,
+    contract_size: float = 1.0,
+    *,
+    open_notional: float | None = None,
+    rate: float | None = None,
+) -> Optional[float]:
+    """毛利扣双边手续费后的净盈亏;gross 无效则返回 None."""
+    gross = _finite(gross_pnl)
+    if gross is None:
+        return None
+    fee = estimate_roundtrip_fee_usdt(
+        entry_price,
+        exit_price,
+        qty,
+        contract_size,
+        open_notional=open_notional,
+        rate=rate,
+    )
+    return round(gross - fee, 4)
diff --git a/tests/test_hub_calculator_lib.py b/tests/test_hub_calculator_lib.py
index c2cdb64..cc5bb86 100644
--- a/tests/test_hub_calculator_lib.py
+++ b/tests/test_hub_calculator_lib.py
@@ -88,7 +88,8 @@ class HubCalculatorLibTests(unittest.TestCase):
         self.assertEqual(data["first_contracts"], 10.0)
         self.assertEqual(len(data["rows"]), 1)
         self.assertEqual(data["rows"][0]["loss_at_sl_u"], 50.0)
-        self.assertEqual(data["rows"][0]["profit_at_tp_u"], 200.0)
+        # 毛利 200 − 双边费 (1000+1200)*0.0005=1.1 → 198.9
+        self.assertEqual(data["rows"][0]["profit_at_tp_u"], 198.9)
 
     @patch("lib.hub.hub_calculator_lib._resolve_market", return_value=_mock_resolve())
     def test_roll_calculator_chain_two_legs(self, _mock):
diff --git a/tests/test_order_monitor_display_lib.py b/tests/test_order_monitor_display_lib.py
index 5ec9b3d..8700b23 100644
--- a/tests/test_order_monitor_display_lib.py
+++ b/tests/test_order_monitor_display_lib.py
@@ -136,7 +136,8 @@ def test_apply_order_price_display_fields_gate_contract_size():
         avg_entry_price=62063.4,
     )
     assert payload["reward_at_tp_usdt"] is not None
-    assert abs(payload["reward_at_tp_usdt"] - 6.73) < 0.1
+    # 毛利约 6.73, 扣双边 0.05% 后约 6.25
+    assert abs(payload["reward_at_tp_usdt"] - 6.25) < 0.1
 
 
 def test_calc_latest_risk_amount_long():
diff --git a/tests/test_strategy_roll_ui_lib.py b/tests/test_strategy_roll_ui_lib.py
index 201963a..80f29e6 100644
--- a/tests/test_strategy_roll_ui_lib.py
+++ b/tests/test_strategy_roll_ui_lib.py
@@ -43,4 +43,5 @@ def test_infer_initial_position_from_live():
 
 
 def test_reward_at_tp_long():
-    assert roll_ui.reward_at_tp_usdt("long", 100.0, 110.0, 2.0) == 20.0
+    # 毛利 20, 双边费 (200+220)*0.0005=0.21 → 净 19.79
+    assert abs(roll_ui.reward_at_tp_usdt("long", 100.0, 110.0, 2.0) - 19.79) < 1e-6
diff --git a/tests/test_trade_fee_lib.py b/tests/test_trade_fee_lib.py
new file mode 100644
index 0000000..ba70530
--- /dev/null
+++ b/tests/test_trade_fee_lib.py
@@ -0,0 +1,48 @@
+"""永续固定费率净盈亏."""
+from __future__ import annotations
+
+import os
+import sys
+import unittest
+from pathlib import Path
+
+ROOT = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(ROOT))
+
+from lib.trade.trade_fee_lib import (  # noqa: E402
+    estimate_roundtrip_fee_usdt,
+    net_pnl_after_fee,
+    notional_usdt,
+    taker_fee_rate,
+)
+
+
+class TestTradeFeeLib(unittest.TestCase):
+    def test_default_rate(self):
+        os.environ.pop("PERP_TAKER_FEE_RATE", None)
+        self.assertAlmostEqual(taker_fee_rate(), 0.0005)
+
+    def test_notional(self):
+        self.assertAlmostEqual(notional_usdt(100, 2, 1.0), 200.0)
+        self.assertAlmostEqual(notional_usdt(62000, 78, 0.0001), 483.6, places=2)
+
+    def test_roundtrip_fee_qty(self):
+        # 开 100*2=200, 平 110*2=220, 费=(200+220)*0.0005=0.21
+        fee = estimate_roundtrip_fee_usdt(100, 110, 2.0, 1.0, rate=0.0005)
+        self.assertAlmostEqual(fee, 0.21, places=6)
+
+    def test_net_long_matches_checklist(self):
+        # 毛利 20, 费 0.21 → 净 19.79
+        net = net_pnl_after_fee(20.0, 100, 110, 2.0, 1.0, rate=0.0005)
+        self.assertAlmostEqual(net, 19.79, places=4)
+
+    def test_open_notional_fallback(self):
+        # 无张数:开名义 1000, 出场 110/100 → 平 1100, 费=1.05
+        fee = estimate_roundtrip_fee_usdt(100, 110, open_notional=1000, rate=0.0005)
+        self.assertAlmostEqual(fee, 1.05, places=6)
+        net = net_pnl_after_fee(50.0, 100, 110, open_notional=1000, rate=0.0005)
+        self.assertAlmostEqual(net, 48.95, places=4)
+
+
+if __name__ == "__main__":
+    unittest.main()