How to short bitcoin: four methods, holding costs and risks

To short bitcoin is to open a trade that makes money when the price falls. There are four main ways to do it: sell a perpetual or dated futures contract, borrow coins on a margin account and sell them, buy a put option, or buy an inverse ETF. They differ mostly in how much you can lose. A futures or margin short loses more the higher the price goes and ends in liquidation, while a put option can never cost more than the premium you paid.

What a short is and where the profit comes from

A classic short sale works like this: you borrow an asset, sell it right away, buy it back later and return what you borrowed. If the price dropped in between, you keep the difference. Charles Schwab walks through it with a stock: borrow 100 shares and sell them for $5,000; the price falls to $25 a share, buying them back costs $2,500, and the other $2,500 is profit.

Shorting bitcoin follows the same logic, but usually nobody borrows anything. On crypto exchanges most shorts are opened with a contract, the perpetual future: you post collateral, sell the contract, and the exchange marks your result to the current price at every moment.

The key asymmetry: a price cannot fall below zero, so a short can earn at most 100% of the position size. The price can rise without limit. Schwab puts it this way: in theory there is no upper limit to what you would have to pay to replace what you borrowed, and it describes short selling as an advanced strategy with potentially unlimited risk.

Four ways to short bitcoin

Perpetual futures. This is the most widely used tool. Instead of loan interest it uses a funding rate. Under Binance's rules, when the rate is positive, longs pay shorts, and when it is negative, shorts pay longs. Funding settles every 8 hours by default, and only traders holding a position at that moment pay or receive it. The exchange takes no cut of these payments.

Spot margin short. This is the classic borrow-and-sell setup. Per Binance's margin guide, interest on a margin loan is charged hourly, and cross margin offers 3x or 5x leverage. Our guide to crypto margin trading covers the modes in detail.

Put options. The buyer of a put pays a premium for the right to sell bitcoin at a preset price. If the price rises instead, the buyer loses the premium and nothing more: a purchased option cannot be liquidated. For how puts and calls work, see bitcoin options explained.

Inverse ETFs. This route works from an ordinary brokerage account with no crypto exchange. The best-known fund is the ProShares Short Bitcoin ETF (ticker BITI). According to the fund's page, it seeks −1x the daily performance of bitcoin before fees and expenses, launched on June 21, 2022, charges 1.02% a year, and does not short bitcoin directly but invests in futures and swaps. Its net assets stood at about $75.8 million as of Nov. 11, 2026.

Dated futures with an expiry also exist, including on the regulated CME. They carry no funding rate; the cost of holding sits in the gap between the contract and spot price, which we cover in bitcoin futures basis.

What it costs to hold a short: an example from Nov. 12, 2026

By our Binance data, bitcoin traded near $71,900 as of 1:00 PM ET on Nov. 12, 2026: down 3.5% over 24 hours and 13.6% over 30 days. Funding on the BTCUSDT perpetual was 0.00997% per 8 hours, about 10.9% annualized; the 30-day average was 0.0067% per 8 hours.

The rate was positive, so on that day a short was being paid rather than paying. A $10,000 position earned roughly $1 per 8-hour settlement, or about $3 a day. That is not guaranteed income: funding resets every 8 hours and often turns negative in a falling market, at which point shorts become the payers. Current readings across four exchanges are on our funding rate page.

A put option is priced differently: you pay once, up front. At 1:10 PM ET the same day, a Deribit put with a $70,000 strike expiring Nov. 27 was marked at about 0.0178 BTC, roughly $1,280 for a 1 BTC contract. Break-even at expiry is near $68,700: above it the buyer loses some or all of the premium, below it the trade is in profit. A loss larger than $1,280 is impossible wherever the price goes.

Where a short gets liquidated

For a leveraged short, the liquidation price sits above the entry price. As a rule of thumb, at N-times leverage your collateral covers a rise of about 100/N percent. The real level is slightly closer, because the exchange closes the position once remaining collateral falls to the maintenance margin. Binance publishes the full formula, which uses wallet balance, position size and the maintenance margin rate.

For a short opened at $71,900 in isolated mode, a rough estimate looks like this:

Compare that with the recent range. By our data the 7-day high was $76,416, the 30-day high $84,898 and the 90-day high $87,396. A 20x short from $71,900 would not have survived a return to last week's level, and a 5x short would not have survived a return to the three-month high. The higher the leverage, the less ordinary market noise it takes to lose the collateral. Our guide to crypto liquidations explains how the forced close works.

The short squeeze: the seller's main risk

A short squeeze is a rally that feeds on itself. Closing a short means buying. When the price climbs, shorts get closed by stop orders and liquidations, those purchases push the price higher, and the next layer of positions is hit. Schwab describes the same mechanism in stocks: an unexpected rise triggers a cascade as more and more short sellers are forced to buy.

Two examples from 2026:

1. Aug. 19⁠–⁠20. Over two days, short liquidations across crypto totaled $3.1 billion, of which $1.65 billion was in bitcoin, according to CoinGlass data cited by Cointelegraph; the price approached $72,000. The outlet called Thursday, Aug. 20, the largest single-day wipeout of shorts ever recorded.
2. Nov. 4. Bitcoin reclaimed $80,000 and $378 million of shorts were liquidated in a single hour, as we reported.

Crowd positioning does not always warn you in advance, but it can be watched. On Nov. 12, 2026, by our Binance data, 72.6% of accounts with open BTCUSDT positions were long, or 2.65 long accounts for every short one. Live readings are in the Pulse block, and forced closes are tracked on the liquidations page.

How an inverse ETF differs from a real short

An inverse fund delivers −1x for one day, not for your whole holding period. ProShares says so directly: for any holding period other than a day, your return may be higher or lower than the daily target.

The reason is the daily reset. A hypothetical: bitcoin rises 10% on day one, then falls 9.09% on day two and is back where it started. The fund returns −10% and +9.09% on those days: 0.9 × 1.0909 = 0.982. Bitcoin is flat, and the fund is down about 1.8%. In a long, directionless market that gap compounds, with the 1.02% annual fee on top. The upside of the instrument is elsewhere: you cannot lose more than you invested, and there are no liquidations or margin calls.

Common mistakes

• Too much leverage. Bitcoin routinely moves 5⁠–⁠10% within a few days. The table above shows that is enough to wipe out a 10x–20x short.
• No stop order. Crypto trades around the clock, and a squeeze can happen overnight or on a weekend.
• Cross margin by default. In cross mode a losing short draws collateral from the whole account, not just its own position.
• Forgetting the carry. With negative funding a short pays every 8 hours; a margin loan accrues interest hourly; an option loses value every day.
• Holding an inverse ETF for months. The fund is built for one day, and over longer periods its result drifts away from "minus the bitcoin price."
• Confusing a short with a hedge. If the goal is to protect coins you hold, the short is sized against those coins, not against the wish to profit from a drop.

Availability depends on the country. In the EU, for example, the regulator ESMA capped leverage on cryptocurrency CFDs at 2:1 for retail clients. Check the rules of your jurisdiction and your exchange before trading.

FAQ

Can you short bitcoin without leverage? Yes. A 1x futures short, a purchased put option or an inverse ETF require no borrowed leverage. A 1x short is still liquidated if the price roughly doubles.

How much can you lose shorting bitcoin? On futures and margin accounts, the full collateral of the position, or the whole account balance in cross mode. With a purchased put, only the premium. With an inverse ETF, no more than you invested.

Is a futures short or a put option better? It depends on the scenario. A futures short profits from the first dollar of decline, but its risk is not capped by the entry price. A put costs money up front and pays off only below its break-even level, but the maximum loss is known in advance.

Does a short pay the funding rate? Only when the rate is negative. When funding is positive, shorts receive it from longs, as was the case on Nov. 12, 2026.

This is not investment advice.