Introduction

A crypto margin call is a demand to deposit additional collateral or reduce your exposure when the value of your crypto holdings drops below a required threshold. It's the lender or exchange telling you: your buffer has gotten too thin, and you need to act before we have to step in.

Margin calls come up in two distinct contexts. The first is leveraged trading, where you borrow funds from an exchange to open a position larger than your capital allows. The second is crypto-backed lending, where you pledge BTC, ETH, or another asset as collateral for a loan. The mechanics are similar in both cases (collateral value falls relative to the amount owed), but the timelines, consequences, and response options are different.

This article breaks down the mechanics of crypto margin calls, what triggers them, how they differ from liquidation, and what you can do to avoid one.

What Is a Margin Call in Crypto?

A margin call is a notification that your collateral or account equity has fallen below the minimum required by the platform you're using. It's a warning but if you don't respond, the next step is liquidation, where the platform sells your assets to cover the shortfall.

In margin trading, you're borrowing funds from an exchange to take a larger position. The exchange requires you to maintain a minimum balance (called the maintenance margin) relative to the size of your position. If your equity drops below that floor, you get a margin call.

In crypto-backed lending, you're pledging crypto as collateral for a cash loan. Here, the key metric is your loan-to-value (LTV) ratio: the size of your loan divided by the current value of your collateral. If your collateral drops in value and your LTV rises past a predefined threshold, the lender issues a margin call.

The underlying principle is the same in both cases. You've borrowed against an asset, and that asset has lost enough value that the lender's risk tolerance has been exceeded.

How Crypto Margin Calls Work

Initial Margin, Maintenance Margin, and LTV

Three concepts are core to every margin call.

Initial margin is the collateral required to open a leveraged position or take out a loan. On a trading platform, this might be 10% of the position size (implying 10x leverage). On a lending platform, this is the crypto you pledge upfront.

Maintenance margin is the minimum equity you must keep in your account to hold the position open. On exchanges, this is usually expressed as a percentage of the position value. If you fall below it, the margin call gets triggers.

Loan-to-value ratio (LTV) is the lending equivalent. If you borrow $50,000 against $100,000 worth of Bitcoin, your LTV is 50%. If Bitcoin's price drops and your collateral is now worth $71,400, your LTV has risen to 70%. Most crypto lenders trigger a margin call somewhere between 65% and 75% LTV, depending on the asset.

Here's a simple example. You pledge 1 BTC at $100,000 and take a $50,000 loan at 50% LTV. Bitcoin falls to $71,400. Your LTV is now $50,000 / $71,400 = 70%. If the lender's margin call threshold is 70%, you'll receive a notification to either add more collateral or pay down part of the loan.

What Happens When a Margin Call Is Triggered

The exact procedure depends on the platform, but the general flow looks like this:

You receive a notification, typically by email and through your account dashboard. Some platforms also send push notifications if enabled.

You're given a cure window to respond. This is where crypto diverges sharply from traditional finance. A stockbroker might give you two to five days. A crypto exchange running leveraged perpetuals might give you minutes. A crypto lending platform like Arch typically provides a 24-hour window, and in some cases, borrowers can request an extension.

During that window, you have two options: deposit additional collateral to bring your ratio back in line, or repay part of your loan (or reduce your position) to lower the amount owed.

If you do nothing, the platform moves to liquidation. It sells enough of your collateral to restore the required ratio, or in some cases, closes your entire position.

Margin Call vs. Liquidation

This is a distinction worth being precise about. A margin call is a warning but liquidation is the actual selling of assets.

Many platforms use tiered thresholds. A lending platform might issue a margin call at 70% LTV, trigger partial liquidation at 80% LTV, and full liquidation at 90% LTV. The margin call gives you a chance to act. Liquidation is what happens when you don't, or when the market moves too fast for anyone to respond.

In highly volatile markets, price can blow straight through the margin call level and hit the liquidation threshold before you've had time to react. This is especially common on exchanges with automated liquidation engines running 24/7, where there's no human discretion in the process.

What Triggers a Crypto Margin Call

Price Volatility

This is the most common trigger and the most straightforward. Crypto is structurally volatile. Bitcoin's annualized volatility sits around 40% to 60% even in relatively calm stretches, and altcoins run significantly higher. A 15% to 20% drawdown in BTC can happen in a matter of days, and that's often enough to push a moderately leveraged position or a high-LTV loan past the margin call threshold.

Excessive Leverage or High Starting LTV

The higher your starting leverage or LTV, the less room you have before a margin call hits. A loan taken at 50% LTV only needs a roughly 30% decline in collateral value to reach a 70% margin call threshold. A loan at 30% LTV needs a roughly 57% decline to reach the same point. That difference in buffer is enormous in a market that routinely sees 20% to 30% swings.

The same logic applies to trading. A 2x leveraged position can absorb a 25% move against you before wiping out half your equity. A 10x position gets there with a 5% move.

Liquidation Cascades

When a large number of leveraged positions get liquidated simultaneously, the forced selling pushes prices lower, which triggers more margin calls, which triggers more liquidations. This feedback loop is called a liquidation cascade.

The October 2025 event is the clearest recent example. Close to $10 billion in positions were liquidated in about 14 hours, with 70% of the damage concentrated in a 40-minute window. At the peak, $3.2 billion in positions were wiped out in a single minute. These cascades are more severe in crypto than in traditional markets because liquidation is fully automated, markets run around the clock, and retail traders often operate at high leverage with thin margins.

Macro and Cross-Market Contagion

Rate decisions, geopolitical shocks, and equity market selloffs increasingly spill into crypto. The October 2025 cascade was partly triggered by a tariff-related equity selloff, not a crypto-specific event. When risk-off sentiment hits across asset classes, crypto (as the highest-beta asset in most portfolios) tends to absorb the sharpest selling pressure.

Margin Calls in Crypto-Backed Lending vs. Margin Trading

These two contexts look similar on paper but feel very different in practice.

In margin trading, you're borrowing to speculate on price direction. Margin calls can arrive in minutes. Liquidation is often automatic and immediate, with no human review. The risk is losing your entire position and, on some platforms, even owing more than you deposited.

In crypto-backed lending, you're borrowing cash against holdings you intend to keep. The margin call is tied to your LTV ratio. Most lenders provide a defined cure window (typically 24 to 72 hours) and use partial liquidation rather than closing out your entire position. The goal is to preserve as much of the borrower's collateral as possible while maintaining the lender's risk parameters.

Platforms like Arch structure their margin calls around asset-specific LTV thresholds. Bitcoin, with its relatively lower volatility, gets a higher maximum starting LTV than Ethereum or Solana. When a margin call is triggered, borrowers have a cure window to add collateral or repay part of the loan. If neither happens, Arch partially liquidates, selling just enough collateral to bring the LTV back to the pre-defined threshold.

How to Avoid a Crypto Margin Call

Start with a Conservative LTV or Lower Leverage

This is the single most effective protection. A 30% LTV on a BTC-backed loan can withstand a 50%+ price decline before hitting a typical margin call threshold. A 60% LTV has far less room. For traders, running 2x to 3x leverage instead of 10x or 20x dramatically widens your margin of safety.

The extra borrowing capacity you get from a higher LTV or higher leverage is rarely worth the liquidation risk it introduces. Borrowers who maintained LTVs below 30% during the 2025 market volatility avoided margin calls entirely, while those above 60% were routinely squeezed.

Monitor Your Position and Set Alerts

Don't rely solely on the lender or exchange to notify you. Set independent price alerts for your collateral assets so you know when the market is moving against you before the formal margin call arrives. Many lending platforms display your current LTV on a dashboard in real time. Check it regularly during periods of high volatility.

For traders, liquidation heatmaps (from tools like CoinGlass) can show where market-wide risk is clustered, giving you advance warning of potential cascade zones.

Keep Reserves Available

Maintain liquid reserves, whether cash, stablecoins, or additional crypto, that you can deploy quickly to top up collateral or pay down a loan. The cure window on a margin call is short. If you need to sell other assets, transfer funds between accounts, or wait for a wire to clear, you may not make it in time.

Use Stop-Loss Orders (for Traders)

If you're trading on margin, setting a stop-loss order above your liquidation price can close your position at a manageable loss rather than a total wipeout. This won't help with sudden gaps or extreme slippage during a cascade, but it provides a basic safety net in normal conditions.

What to Do If You Get a Crypto Margin Call

First, check how much time you have. Read the notification carefully and confirm your cure window. On a lending platform, you may have 24 hours or more. On an exchange, you may have minutes.

Second, evaluate your options. Can you deposit additional collateral quickly? Do you have funds available to pay down part of the loan? If not, can you accept a partial liquidation without too much damage?

Third, act fast. In crypto, these windows are short and prices can continue falling. If you have the reserves, adding collateral immediately is usually the simplest path.

Fourth, check whether an extension is available. Some lending platforms allow borrowers to request additional time beyond the standard cure window, though this is never guaranteed and typically won't apply if the position hits the liquidation threshold.

Finally, understand the tax implications. Any liquidation of your crypto collateral is generally treated as a sale, which means it's a taxable event. Consult a tax advisor, especially if the amounts are significant.

Frequently Asked Questions

What LTV ratio triggers a margin call on a crypto loan?

It varies by platform and by asset. Most lenders set the threshold between 65% and 75% LTV. Higher-volatility assets like Solana often have lower thresholds than Bitcoin. Always check the specific terms before borrowing.

How long do I have to respond to a crypto margin call?

On leveraged trading platforms, the window can be as short as a few minutes. On crypto lending platforms, you typically get 24 to 72 hours. Some lenders offer the option to request an extension.

Can I lose more than my collateral?

Liquidation is capped at your pledged collateral. On certain margin trading platforms (particularly those outside the EU or without negative balance protection), it is technically possible to owe more than you deposited.

Is a crypto margin call a taxable event?

The margin call itself is not. But if it leads to liquidation, the forced sale of your crypto is typically treated as a taxable event. The specifics depend on your jurisdiction, so consult a qualified tax advisor.

What's the difference between a margin call and auto-deleveraging?

A margin call is a warning to add collateral or reduce exposure. Auto-deleveraging (ADL) is a mechanism some derivatives exchanges use when a liquidated position can't be filled at the bankruptcy price. In ADL, the exchange closes profitable positions held by other traders to offset the loss. It's a last resort backstop, and it only applies to derivatives trading.

Conclusion

Margin calls are a built-in feature of any system where borrowed capital meets volatile collateral. They exist to protect both the lender and, ultimately, the borrower from a situation spiraling out of control.

The best defense is structural: start with a conservative LTV or leverage ratio, monitor your position actively, and keep reserves available to respond quickly. For anyone using or considering a crypto-backed loan, understanding a lender's margin call framework, including the specific thresholds, cure windows, and liquidation mechanics, is just as important as the interest rate.

Platforms like Arch publish their margin call and liquidation thresholds, giving borrowers the transparency to plan ahead rather than react in a crisis. Whether you're borrowing against Bitcoin to access liquidity or trading on margin, the principle is the same: know your numbers before the market tests them.

About Arch

Arch is building a next-gen wealth management platform for individuals holding alternative assets. Our flagship product is the crypto-backed loan, which allows you to securely and affordably borrow against your crypto. We also offer access to bank-grade custody, trading and staking services.

Disclaimer: This article is for informational purposes only and does not constitute investment, legal, or tax advice. Cryptocurrency investments are volatile and risky. Always conduct your own research before making investment decisions.