# PowerTrade Perpetual Funding Rate Methodology (Migration Overview)

### Overview

PowerTrade is upgrading its perpetual funding rate mechanism to match the transparency and accuracy of leading exchanges such as Bybit and BitMEX. This transition, which will be fully completed by **the end of Q1 2026**, ensures that our perpetual contract pricing and funding rates remain competitive, predictable, and based on real market conditions.

During this period, two methodologies will coexist — the **current (legacy) model** and the **new industry-aligned model**.\
This document explains both and provides guidance for traders and partners on how to interpret and reproduce PowerTrade’s funding rates.

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### Why Funding Rates Exist

Funding rates are periodic payments exchanged between long and short position holders to keep the perpetual contract price in line with the underlying spot index:

* If the perpetual price trades **above** the index, **longs pay shorts**.
* If it trades **below** the index, **shorts pay longs**.

This mechanism balances buying and selling pressure, ensuring market stability.

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### Legacy Funding Mechanism (Current System – Phasing Out)

PowerTrade’s legacy system, called **Standard Perpetual Swap Funding**, was designed to provide continuous funding with a fixed-rate logic.\
While functional, it produced higher-than-expected funding fees during high volatility or shallow market depth.

#### How It Works

* **Static Configuration:** Uses fixed parameters for funding periods and rate limits.
* **Continuous Funding:** Funding accrues every few minutes rather than at set intervals.
* **Reference Price:** Based on a daily averaged internal price, not always reflecting real-time market movements.
* **No Premium Index:** The calculation does not incorporate real-time order book depth or external index divergence.

This model occasionally overestimated funding when the order book had wide spreads or incomplete quotes.\
Traders sometimes paid **5–10x more** funding than industry norms.

#### Why We’re Upgrading

The new methodology introduces real-time data inputs, standardized intervals, and rate limits consistent with Bybit and BitMEX.\
This change brings:

* Accurate, reproducible funding rates.
* Predictable cost structures.
* Fairness between long and short positions.

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### New Funding Rate Methodology (Rollout by Q1 2026)

The new funding mechanism is already live for selected markets and will fully replace the old system by Q1 2026.\
This model mirrors the leading global standard, providing consistency and transparency.

#### Formula

F = P + clamp(I - P, +0.05%, -0.05%)

Where:

* **F:** Final funding rate.
* **P (Premium Index):** Difference between the market’s fair value and the underlying index.
* **I (Interest Rate):** A small baseline (typically 0.01% per 8 hours or prorated hourly).
* **Clamp:** A ±0.05% cap preventing extreme deviations.

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#### Components Explained

**Premium Index (P)**

Calculated as:

P = \[ max(0, Impact Bid - Index) - max(0, Index - Impact Ask) ] / Index

* **Impact Bid/Ask:** Simulated prices for executing a fixed notional (e.g., $200,000) based on order book depth.
* **Index Price:** A consolidated external market reference from multiple exchanges.

**Interest Rate (I)**

Represents the cost-of-carry between base and quote currencies:

* **0.03% per day**
* **0.01% per 8h**, or **0.00125% per hour** (for hourly settlement)

**Clamp**

Ensures stability, limiting funding swings to ±0.05% per interval even during high volatility.

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#### Impact Margin Notional (IMN)

The **Impact Margin Notional** defines how deep into the order book we look when calculating the Impact Bid and Ask prices.\
It simulates a realistic market order size, ensuring our funding rate reflects *true market liquidity* rather than just top-of-book prices.

| Tier   | Example Tokens          | Suggested IMN (USD) | Description                                          |
| ------ | ----------------------- | ------------------- | ---------------------------------------------------- |
| Tier 1 | BTC, ETH                | $100,000 – $200,000 | Deepest liquidity, broad market participation.       |
| Tier 2 | SOL, XRP, BNB, DOGE     | $25,000 – $50,000   | Highly liquid altcoins with stable depth.            |
| Tier 3 | MATIC, LINK, AVAX, NEAR | $5,000 – $15,000    | Medium liquidity markets.                            |
| Tier 4 | Smaller altcoins        | $1,000 – $2,500     | Low-liquidity tokens; tighter depth to reduce noise. |

Adjusting the IMN per asset allows PowerTrade to balance accuracy and stability — larger IMNs smooth volatility, while smaller IMNs make the funding rate more responsive to rapid price changes.

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#### Settlement & Spread

* **Hourly Funding:** Funding is applied hourly to open positions only.
* **Position Timing:** Traders closing before the settlement timestamp avoid that period’s funding.
* **Spread in Perpetuals:** PowerTrade perpetuals include a configurable mark price spread to account for market-maker depth and volatility.\
  This ensures consistent pricing and prevents manipulation in thinner markets.

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#### Funding Settlement Update — No Funding on Closed Positions

PowerTrade is also updating how funding fees are applied at settlement.

**Currently:**\
Funding accrues even if a trader closes a position before the next settlement cycle (currently hourly).

**After the Update:**\
Funding will only be charged to **positions still open at settlement**.\
If you close your position before the funding timestamp, **no funding fee will apply**.

This change aligns PowerTrade with **Bybit’s settlement logic**, ensuring that funding only applies to active positions and providing fairer, more predictable trading costs.

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#### Data Transparency and Reproducibility

All components of the funding rate are **reproducible using historical data**:

* Order book snapshots (for impact bid/ask)
* Index prices (external feeds)
* Time-weighted premium indices per minute
* Published funding intervals and final rates

Clients, auditors, and partners can independently verify funding rates for any time period — reinforcing transparency and trust.

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### Comparison: Old vs. New Model

| Feature                     | Legacy Model                    | New Model (Bybit-Aligned)              |
| --------------------------- | ------------------------------- | -------------------------------------- |
| **Calculation Basis**       | Static parameters               | Real-time data + order book depth      |
| **Funding Interval**        | Continuous (per minute)         | Discrete (hourly, moving to 8h)        |
| **Premium Index**           | Not used                        | Live premium index based on mark price |
| **Interest Rate Component** | Absent                          | Included (0.01%/8h)                    |
| **Funding Rate Cap**        | High (up to 5%)                 | ±0.05% per interval                    |
| **Transparency**            | Internal only                   | Public, fully reproducible             |
| **Fairness**                | Overestimates during volatility | Accurate across all conditions         |

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### Migration Plan (Q4 2025 – Q1 2026)

1. **Phase 1:** BTC, ETH, and SOL perpetuals now use the new formula.
2. **Phase 2 (Q4 2025):** All top 10 altcoin perpetuals migrate.
3. **Phase 3 (Q1 2026):** Complete rollout across all markets.

During the transition, both systems may coexist temporarily for validation and comparison.

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### Benefits for Clients

* **Lower and Predictable Costs:** Aligns with market-standard funding levels.
* **Transparency:** Every calculation component can be verified historically.
* **Accuracy:** Based on real market depth and index data.
* **Fairness:** Funding reflects true long/short imbalances.
* **Control:** Traders can manage exposure by timing positions around hourly settlements.

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### Verification Example

Clients and analysts can independently reproduce PowerTrade’s funding rate for any symbol:

1. Download order book snapshots (for Impact Bid/Ask).
2. Retrieve the Index Price feed for matching timestamps.
3. Compute the Premium Index (P) per minute.
4. Apply the funding formula.
5. Compare to published PowerTrade funding values.

This reproducibility demonstrates PowerTrade’s commitment to transparency and auditability.

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### Conclusion

PowerTrade’s migration to the new funding mechanism marks a major step toward **industry-leading transparency, fairness, and consistency**.\
By the end of **Q1 2026**, all perpetual markets will use the Bybit-aligned methodology.

Traders will benefit from:

* Stable, predictable, and reproducible funding rates
* Globally consistent methodology
* Greater control over funding exposure

**PowerTrade — bringing institutional transparency to crypto derivatives.**