The T-Bill Yield Is the Hurdle Every Trading Strategy Must Clear

$3,000 on a $50,000 account is 6%. Most traders would log that year as a win, and the account statement agrees: the balance went up, the costs are already out, and the gain is real money. Now put a second number beside it. Call it the do-nothing number.

The number that pays you to sit still

The risk-free rate is what money earns without taking market risk. In practice it is usually proxied by the yield on short-term Treasury bills, which the US government backs and which mature in a year or less. The Treasury publishes the rates every business day, along with the results of each bill auction. A bill held to maturity pays its yield whatever stocks do. Which maturity to use as the proxy is covered under risk-free rate.

Every dollar sitting in a trading account could have been in bills instead, earning that yield with no screens, no stops and no bad nights, so the first job of any trading profit is to beat what those bills would have paid over the same months.

A $3,000 year, measured properly

Take a hypothetical $50,000 account and a hypothetical T-bill yield of 4.5%. The strategy made $3,000 over the year after commissions, data and interest. Along the way the account fell 15% from its high before recovering.

The reward for the risk and the work was $750. To collect it, the account sat $7,500 underwater at its worst. Nobody knew then whether it would come back. A bill holder never saw a loss. That’s ten dollars of drawdown for every dollar of reward.

Running the same test on your own account takes a statement and a few minutes. Take the year’s profit after every cost: commissions, platform and data fees, margin interest. Multiply the average balance, adjusted for deposits and withdrawals, by the bill yield that held over those months. Subtract. The maximum drawdown goes beside the result, since a thin excess earned through a deep hole is a different year from the same excess earned smoothly.

Count the hours too

Say the strategy took five hours a week. Run that for 50 weeks.

Three dollars an hour. The hours might be a pleasure. Plenty of people trade partly because they enjoy it, and that is a fine reason, as long as the year gets counted honestly as a hobby with a small cash return attached, because the arithmetic will not support calling it a better use of $50,000 than a bill.

The objection: the first year is tuition

The strongest reply says one year proves little. Skills compound, the argument runs, and a trader who clears the hurdle by $750 while learning may clear it by far more once the method matures, so judging a strategy on its first year is like judging a surgeon on their first week.

Part of that is right. One year proves very little in either direction, and the skill or dumb luck quiz is a good test of how easily a short record fools you. The hurdle does not go away with time, though. It becomes the measuring stick for the tuition. If year two also clears T-bills by a thin margin with a deep drawdown, the lesson being paid for is that the edge is small, and the cost of learning it is known in dollars. A trader who writes down the hurdle before each year starts, and the drawdown they’d accept to beat it, has a test the next statement can pass or fail.

A second objection says bills aren’t truly riskless, since inflation eats their return. True, and irrelevant here. Inflation eats a trading profit at exactly the same rate, so it comes out of both sides of the comparison and leaves the $750 gap where it was.

The hurdle moves with rates

When short-term rates are low, the hurdle is low. Almost any profitable strategy seems to clear it. When rates are high, the same $3,000 year can fall short. At a hypothetical 6% yield, the bill pays $3,000 on $50,000. The excess is zero. Nothing about the trading changed. The price of sitting still did.

A return means little without the rate beside it. Check the Treasury’s published bill rates for the months you actually traded.

If the strategy uses margin, the bar rises again. Interest on the loan belongs in the costs before the comparison, and a broker’s margin rate normally sits above what a bill pays, so borrowed money has to clear a higher hurdle than your own. The margin interest calculator puts that cost in dollars.

Clear the bill by enough to pay for the drawdown

The call: a strategy earns its keep only when its excess over T-bills is large enough to justify the worst drawdown you sat through and the hours you spent. $750 against a $7,500 drawdown and 250 hours falls short. The same strategy with a 5% drawdown in two hours a week might. The call bends for money you’d never have put in bills. It bends for traders honestly buying an education. For everyone else, the answer to investing versus trading starts with this subtraction.