Perpetual Funding Rates as a Yield Source: Backtest Results

By Chanuka Geekiyanage Oct 08, 2026

Perpetual funding rates can provide a source of market-neutral crypto yield by pairing a spot position with an opposite perpetual futures position. But the headline funding rate is not the same as realized return. Fees, slippage, changing funding rates, leverage, basis risk, and exchange risk can significantly reduce or eliminate the apparent yield.

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How Funding-Rate Yield Works

When a perpetual contract trades above its underlying market, funding is typically positive, and longs pay shorts. A trader seeking funding income can buy the underlying asset and short an equivalent amount of the perpetual contract.

The spot and perpetual positions largely offset directional price movements, leaving funding as the primary expected source of return.

For readers unfamiliar with perpetuals, what a perpetual contract is and how it differs from spot trading is useful background.

What the Backtests Show

Backtest results vary considerably depending on the asset, exchange, trading costs, entry rules, and market period.

One Binance BTC funding-rate backtest covering January 2023 through July 2026 reported a 5.20% return before fees but a -1.52% return after standard taker fees. The result illustrates the main problem with funding strategies: a positive gross carry does not necessarily produce a positive net return.

Another 2026 study examining funding-rate arbitrage across Binance, BitMEX, ApolloX, and Drift reported six-month returns ranging from 1.98% to 7.61% across the tested venues. The results show that venue selection and market conditions can materially affect the outcome.

Backtest	Period	Reported Result
Binance BTC funding strategy	Jan. 2023–Jul. 2026	+5.20% before fees
Binance BTC funding strategy	Jan. 2023–Jul. 2026	-1.52% after taker fees
Multi-venue funding study	Six-month test	1.98%–7.61%

The practical takeaway is simple: backtest net returns, not headline funding rates.

Why Funding Rates Do Not Equal Yield

A funding rate is paid on the perpetual position's notional value, and it changes over time. Annualizing a single funding rate can therefore give a misleading impression of expected returns.

For example, a 0.01% funding rate every eight hours would equal 10.95% if maintained for an entire year before costs. That assumption is rarely appropriate because funding can decline, disappear, or turn negative.

Before entering a funding trade, check:

Historical funding rather than only the current rate.
Trading fees and expected slippage.
The funding settlement interval.
Margin requirements and liquidation risk.
The difference between spot and perpetual prices.
Exchange or smart-contract risk.

Funding rates can also provide information about market positioning. How funding rates signal market sentiment in crypto perpetuals can help explain why funding becomes unusually positive or negative.

What a Better Backtest Should Include

A useful backtest should model the actual conditions a trader would face rather than assuming perfect execution.

At minimum, include:

Funding received or paid at each settlement.
Entry and exit fees.
Slippage on both legs.
Spot and perpetual price differences.
Margin requirements.
Funding reversals.
Different market regimes.
Out-of-sample testing.

The strategy should also avoid look-ahead bias. If an entry decision uses the current funding rate, the backtest should only use information that was available at that moment.

A simple comparison is also useful:

Test	Why It Matters
Gross vs. net return	Shows how much fees reduce the edge
Low vs. high leverage	Measures liquidation sensitivity
Always-on vs. selective entry	Tests whether timing improves results
Bull vs. bear markets	Tests whether the strategy depends on one regime
Multiple venues	Shows whether the opportunity is venue-specific

Key Risks

The strategy is market-neutral in design, but it is not risk-free.

Funding can reverse. A positive rate can fall toward zero or become negative, reducing expected income or creating funding costs.

Fees can erase the edge. The Binance backtest above is a clear example of a strategy that became unprofitable after taker fees.

Liquidation remains possible. A leveraged perpetual position can face margin pressure during a sharp market move even when the spot position provides an economic hedge.

Basis risk remains. Spot and perpetual prices can temporarily diverge, creating losses that are not fully offset by the hedge.

Venue risk matters. Centralized exchanges introduce counterparty and custody risks, while decentralized perpetual platforms add smart-contract, oracle, and blockchain risks.

My Take

Funding-rate arbitrage can be a useful source of crypto carry, but I would judge the strategy by its net, risk-adjusted return, not its advertised funding rate.

The strongest setup is a persistent funding premium combined with deep liquidity, low execution costs, and conservative leverage. If a strategy only works when funding remains unusually high or when trading costs are ignored, the backtest is not strong enough to justify the trade.

For most traders, a low-leverage cash-and-carry position is more defensible than using high leverage to maximize the return on collateral.

Conclusion

Funding rates can generate meaningful market-neutral returns, but published backtests show that fees and changing market conditions can make a large difference. The most important question is not how high the funding rate looks today, but whether the expected carry remains attractive after realistic costs and risks.

Before committing capital, test the strategy with actual funding history, trading fees, slippage, margin requirements, and different market conditions. If the net return disappears under conservative assumptions, the apparent yield is probably not worth the added complexity.

FAQs

1. Is funding-rate arbitrage risk-free?

No, because funding can reverse and spot and perpetual prices can diverge. Traders also face execution, liquidation, and venue risks.

2. Can funding rates provide consistent income?

They can provide recurring income during periods of persistent positive funding. However, funding rates change with market positioning and should not be treated as fixed yields.

3. Why did some funding backtests lose money after fees?

Funding income can be too small to compensate for entry, exit, and trading costs. The Binance BTC example shows how a positive gross return can become negative after taker fees.

4. Does leverage improve funding-rate returns?

Leverage can increase the return relative to posted collateral, but it also increases liquidation and margin risk. Higher leverage does not necessarily improve the strategy's risk-adjusted return.

5. What should I include in a funding-rate backtest?

Include funding payments, trading fees, slippage, basis movements, margin requirements, and different market regimes. Out-of-sample testing is also important to avoid optimizing the strategy only for historical conditions.

References

Binance Futures: Introduction to Binance Futures Funding Rates. https://www.binance.com/en/support/faq/detail/360033525031

Hyperliquid Docs: Funding. https://hyperliquid.gitbook.io/hyperliquid-docs/trading/funding

Deribit Support: Funding Specifications. https://support.deribit.com/hc/en-us/articles/31424939178397-Funding-Specifications

Pindza, E. (2026): Centralized-decentralized exchange funding rate arbitrage as a basis trade. https://link.springer.com/article/10.1007/s42521-026-00213-3

Santiago Zamora: Funding Rate Arbitrage Backtest. https://github.com/santzmr/funding-rate-arbitrage

Blockchain: Research and Applications: Funding rate arbitrage research. https://doi.org/10.1016/j.bcra.2025.100354

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About the Author: Chanuka Geekiyanage

Chanuka is a content writer, editor and contributor at Panaprium, specializing in long-form editorial articles. He conducts in-depth research and produces well-structured, carefully edited content with a strong focus on clarity, SEO best practices, and consistent formatting. His work spans lifestyle, fashion, wellness, and technical topics, and all articles are reviewed and refined to meet Panaprium’s editorial standards.

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