TestMaxBlog
backtesting · September 11, 2026 · by Joel

Forex vs Futures: Choose the Right Market for Your Backtest

Compare forex and futures by instrument, units, costs and data. Use worked risk examples to choose the right market for your backtest.

Forex and futures are not opposite asset classes. Forex describes currency trading; futures describes a contract structure that can cover currencies, equity indexes, metals and other assets. When traders compare “forex versus futures,” they often mean a broker's currency product versus an exchange-listed contract.

For backtesting, the exact instrument matters more than the label. Identify the product, price feed, unit size and execution assumptions before transferring a strategy between markets.

Start by naming what you want to compare

Example What it represents What to identify
EURUSD Euro priced in US dollars Provider, product type, units and price basis
A currency futures contract A dated exchange-listed currency contract Contract size, quote convention and expiry
NQ E-mini Nasdaq-100 futures Index multiplier, tick size and contract/feed convention

A EURUSD feed and NQ can both support a price-pattern experiment, but they do not measure the same underlying market. A rule that looks similar on the charts may participate at different times and face different costs.

Even currency spot and currency futures prices can differ because of quotation conventions and the relationship between spot and dated delivery prices. CME explains those differences in its spot-versus-futures pricing guide.

Compare risk in money and in R

Suppose a hypothetical EURUSD entry is 1.1000 and the stop is 1.0980. The distance is twenty conventional pips. With a position representing 10,000 euros and a USD result convention, that price movement corresponds to $20 before costs.

Now suppose an NQ entry and stop are twenty index points apart. With NQ's $20-per-point multiplier, one contract represents $400 of price risk. One MNQ represents $40 at the same distance.

“Twenty” describes different units in those examples. Record the symbol and multiplier before comparing outcomes. The NQ/MNQ guide and futures calculator cover the contract arithmetic.

R expresses an outcome relative to the initial planned risk. It helps compare results across sizes, but does not make different instruments interchangeable or eliminate their execution uncertainty.

Check which price the chart contains

A forex dataset may use bid, ask, midpoint or another documented convention. A futures dataset may represent a specific contract or a continuous series assembled from several contracts.

Write down the convention. If you buy at the ask and sell at the bid, spread is already inside the fill-to-fill outcome. A midpoint-only calculation needs a separate treatment. Avoid subtracting the same cost twice.

For continuous futures, check how contract transitions and any price adjustments are handled. A level drawn across a transition may not have the same meaning as a level on a single dated contract.

The GC gold guide provides another concrete instrument example. Gold quoted as XAUUSD is separately specified and should not be silently substituted for GC.

Keep the clock consistent

Define the session in a named timezone or as a fixed UTC window. Those are different rules when daylight-saving changes occur.

Currency markets and exchange futures have their own maintenance periods, holidays and provider coverage. A gap in a dataset should not become an accidental entry signal. If the strategy depends on a scheduled event, use the event's actual timestamp on the selected date.

Comparing a currency strategy through a whole day with an NQ strategy only at the cash open also compares different participation policies. State that difference rather than treating it as an instrument-only result.

Use one written rule with separate records

Here is a practical comparison procedure:

  1. Choose one question, such as whether a completed close beyond a fixed range leads to a subsequent move under specified exits.
  2. Select comparable calendar periods and document each dataset's coverage.
  3. Define how levels, entry timing and exits work on each instrument.
  4. Use each market's units, costs and price precision.
  5. Record every qualifying signal, skip and uncertain fill.
  6. Compare average net R, drawdown and participation with the sample counts visible.

This is a research framework, not a recommendation that one market is safer or more profitable. The backtesting guide explains how to reserve untouched dates for a later test.

Do not turn market selection into cherry-picking

If you test ten instruments and report only the best one, the reader needs to know that ten were considered. A favorable outcome can appear because you gave yourself many opportunities to find it.

Choose the comparison set beforehand. Keep rejected versions and losing markets in the experiment log. If a result looks promising, keep the rules fixed and examine additional data that did not determine your selection.

Use the journal template to preserve those distinctions. Do not combine a new market or rule version with the old record without labeling the change.

What this means for TestMax access

At the September 2026 check, TestMax lists eligible forex pairs such as EURUSD and GBPUSD alongside spot metals, CFDs and supported exchange futures. NQ, MNQ, ES, MES and GC require Pro. The Free plan has a limited recent history window on eligible instruments.

The public inventory does not imply that every exchange currency future is available. Likewise, a CFD on an index is not the same product as the index's futures contract. Check the selector and specifications for the exact instrument you want.

Create a TestMax account to start an eligible forex replay, or explore futures backtesting and current plans for the supported Pro contracts. Make the first comparison about a well-defined test rather than which market produced the most attractive screenshot.

Tags: forex vs futures, backtesting, instrument selection