Futures Calendar Spread Calculator
Calculate entered nearby-versus-deferred spread values at entry and exit, spread change in ticks, and direction-aware gross and net P/L after only the entered round-turn costs.
Enter both futures legs on one quote basis
Select the exact spread orientation used in your records. “Long selected spread” means the displayed spread value benefits when it rises; it does not translate an exchange-specific Buy button.
Entered calendar-spread result
Entered Futures Curve Analysis 1.0.0
| Calculation step | Entered arithmetic | Derived result |
|---|
How futures calendar-spread arithmetic is calculated
Spread change = exit selected spread − entry selected spread
Gross P/L = direction sign × spread change × contract multiplier × whole spreads
Net P/L = gross P/L − entered round-turn cost per spread × whole spreads
The CFTC defines a futures calendar spread as buying one delivery month and simultaneously selling another delivery month of the same futures contract. CME Group notes that product conventions can quote or describe the nearby and deferred legs differently. The calculator therefore makes the arithmetic orientation a visible input.
The audited example selects nearby minus deferred. The entry observations are 5000 and 5012, so the selected spread is −12. At exit the observations are 5010 and 5016, so the selected spread is −6. A long selected spread has gained 6 points.
With a 50-unit multiplier and two whole spreads, gross entered P/L is USD 600. Subtracting USD 10 of entered round-turn costs per spread gives USD 580 net. The result does not assert that the two legs were filled simultaneously or that the entered multiplier, tick and costs match an exchange-listed spread.
Worked example from the audited fixture
How to interpret the result
The positive example result comes from a rise in the selected nearby-minus-deferred spread, not from both outright prices rising. Reversing the orientation or direction changes the sign. Use the exchange product rules and order ticket to map those mathematical labels to actual leg actions.
A careful futures calendar-spread workflow
- Confirm both legs are the same futures product with different delivery months.
- Record the exchange or platform quote orientation before entering prices.
- Use entry and exit observations from a consistent price basis, ideally actual fills for a completed review.
- Verify whether the exchange-listed spread tick differs from either outright tick.
- Enter only costs that apply to the complete two-leg round trip on the same currency basis.
- Review legging, liquidity, slippage, margin offsets and delivery obligations outside this arithmetic.
Basis, calendar spreads and back adjustment are different
These calculations all compare price levels, but they answer different questions. Basis compares futures with a spot or cash reference. A calendar spread compares two delivery months and may support a two-leg P/L review. Back adjustment changes historical analytical levels so consecutive contracts can be displayed as one series.
| Quantity | Compared prices | Primary job | Not equivalent to |
|---|---|---|---|
| Futures basis | Futures versus spot or cash | Measure an entered price relationship | Fair value or arbitrage proof |
| Calendar spread | Nearby versus deferred futures | Measure a two-month spread and entered P/L | Spot basis or a guaranteed simultaneous fill |
| Back adjustment | Old versus new contract at one roll | Align analytical price history | Executed roll P/L or a tradable contract |
| Roll schedule | Contract dates and liquidity evidence | Choose when a data or position transition occurs | A universal date inferred from prices |
Assumptions and limits
- No contract month, price, spread book, settlement, tick, multiplier or order fill is retrieved.
- The page does not know whether a platform Buy action maps to the selected mathematical orientation.
- Only one-to-one whole spreads with the same entered multiplier for both legs are modeled.
- Different-ratio tails, DV01 matching, inter-commodity spreads and options on calendar spreads are excluded.
- Unentered exchange, clearing, brokerage, bid-ask, slippage, tax and financing effects remain excluded.
- The result is not a recommendation, fill guarantee, margin credit, hedge-effectiveness result or maximum-loss estimate.
Where to verify futures curve inputs
Start with the exchange product page and rulebook for the exact symbol and delivery months. Confirm the quotation unit, multiplier, outright and spread tick, settlement method, last-trading and notice dates, and the exchange convention for a listed calendar spread. For spot or cash references, document the source, grade, location, timestamp and conversion basis.
For continuous data, verify the data vendor’s roll rule and adjustment method rather than assuming every platform stitches contracts alike. Volume, open-interest, expiry and fixed-date roll rules can switch on different dates. Difference, ratio, backward, forward and unadjusted series can display different historical levels even when they use the same underlying contracts.
Frequently asked questions
- It combines opposite positions in two delivery months of the same futures product. This page models a one-to-one entered spread only.
- Exchange and platform conventions can differ. The selected orientation determines whether the page calculates nearby minus deferred or deferred minus nearby.
- It is a mathematical label: gross P/L is positive when the selected spread rises. It does not assert how a platform Buy action maps to the actual legs.
- Subtract entry selected spread from exit selected spread, apply the selected long or short sign, then multiply by entered units per leg and whole spreads.
- Divide selected-spread change by the positive entered spread tick size. The calculator does not verify that tick against exchange rules.
- No. It subtracts only the nonnegative round-turn cash cost entered per complete spread. Every unentered cost remains excluded.
- No. Version 1.0.0 models equal one-to-one spreads and excludes DV01 tails, inter-commodity ratios and options on calendar spreads.
- No. Live spread books, legging, bid-ask, slippage, liquidity, margin credits and actual executions are outside the entered arithmetic.
Sources and methodology
- CME Group — FX Futures Pricing and Basis — Defines FX basis and futures-minus-spot interpretation.
- CME Group — Equity Index Basis — States the futures-minus-spot convention and carry context.
- CFTC — Futures Glossary — Defines commodity basis, basis risk and calendar spreads.
- CME Group — Calendar Spread FAQ — Documents two-month structure and a product-specific quote convention.
- TradingView — Continuous Futures Back Adjustment — Documents one additive difference-adjustment implementation.
- CME Group — Demystifying Time-Series Momentum Strategies — Discusses backward ratio and difference adjustments and their return effects.
The operational contract is Entered Futures Curve Analysis version 1.0.0. Independent fixtures cover both basis signs, simple annualization, monetary basis, two quote orientations, long and short spread P/L, entered costs, difference and ratio back adjustment, continuity identities and invalid inputs. Sources support definitions and methods; they do not endorse the site or verify user data.
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The brokers below primarily offer leveraged forex or CFD products, which can use different lot, contract, financing, expiry and rollover conventions from exchange futures. Never copy an exchange-futures multiplier, basis convention or calendar-spread result into a broker CFD calculation without checking the live server specification.
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