Basis Yield Calculator
Results
Formula: Annualized Yield = ((Futures − Spot) / Spot − fees%) × (365 / days) × 100. Assumes futures settles exactly at spot price at expiry (convergence). Does not account for margin requirements on the futures leg, custody costs, or counterparty risk. See guidance below for a complete cost/risk checklist.
The Formula
At expiry, the quarterly futures contract settles at the spot price via a time-weighted average price (TWAP) mechanism. The futures premium (basis) at entry becomes realized profit at settlement — assuming you hold both legs to expiry. The annualization converts the fixed-period return into a comparable rate for benchmarking against alternatives like staking, lending, or money market rates.
Full Cost and Risk Checklist
The calculator shows the gross return from the spot/futures spread. In practice, several additional costs and risks affect net return:
| Cost / risk factor | Typical magnitude | Notes |
|---|---|---|
| Trading fees (both legs, both sides) | 0.06–0.15% round-trip | Included in calculator via fee input |
| Spot custody / exchange deposit risk | Qualitative | Spot held on exchange during trade; risk exchange failure |
| Futures margin requirement | 5–10% of notional | Capital tied up as futures margin earns no yield; reduces effective capital efficiency |
| Futures margin funding call risk | Situational | Unrealized P&L on futures (not realized) may require additional margin if basis widens |
| Settlement slippage | 0.01–0.05% | TWAP settlement may differ slightly from spot at entry; usually small |
| Roll cost (if rolling before expiry) | Variable | If rolling rather than settling, next contract basis may be lower; adds bid-ask spread |
| Tax treatment | Jurisdiction-specific | Futures gains taxed differently from spot in many jurisdictions; consult a tax professional |
For detailed background on how the trade is structured and what drives the basis, see Basis Trading: Spot vs. Futures.
Disclaimer
This calculator is for educational and informational purposes only and does not constitute financial, investment, or tax advice. Calculations assume futures convergence to spot at expiry and do not account for all costs listed in the table above. Actual returns will differ based on exchange-specific fee structures, settlement mechanics, margin requirements, and market conditions. Consult a qualified financial and tax professional before executing basis trades.